jit: Share more code between architectures

14 files changed, 763 insertions, 1086 deletions

diff --git a/erts/emulator/beam/beam_file.c b/erts/emulator/beam/beam_file.c
index d38ceaed8a..cdb463b20d 100644
--- a/erts/emulator/beam/beam_file.c
+++ b/erts/emulator/beam/beam_file.c
@@ -651,14 +651,13 @@ static int parse_type_chunk_otp_26(BeamFile *beam, BeamReader *p_reader) {
 
     for (i = 0; i < count; i++) {
         const byte *type_data;
-        int raw_types;
         int extra;
 
         LoadAssert(beamreader_read_bytes(p_reader, 2, &type_data));
-        extra = beam_types_decode_type_otp_26(type_data, &raw_types, &types->entries[i]);
+        extra = beam_types_decode_type_otp_26(type_data, &types->entries[i]);
         LoadAssert(extra >= 0);
         LoadAssert(beamreader_read_bytes(p_reader, extra, &type_data));
-        beam_types_decode_extra_otp_26(type_data, raw_types, &types->entries[i]);
+        beam_types_decode_extra_otp_26(type_data, &types->entries[i]);
     }
 
     /* The first entry MUST be the "any type." */
diff --git a/erts/emulator/beam/beam_types.c b/erts/emulator/beam/beam_types.c
index 659e5b0d1a..876db9f47b 100644
--- a/erts/emulator/beam/beam_types.c
+++ b/erts/emulator/beam/beam_types.c
@@ -30,50 +30,65 @@
 
 static Sint64 get_sint64(const byte *data);
 
-int beam_types_decode_type_otp_26(const byte *data, int *raw_types_ptr, BeamType *out) {
-    int types;
-    int extra = 0;
+int beam_types_decode_type_otp_26(const byte *data, BeamType *out) {
+    int flags, extra;
 
-    types = (Uint16)data[0] << 8 | (Uint16)data[1];
-    if (types == BEAM_TYPE_NONE) {
+    flags = (Uint16)data[0] << 8 | (Uint16)data[1];
+    if (flags == BEAM_TYPE_NONE) {
         return -1;
     }
 
-    /* The "extra data" aren't part of the type union proper. */
-    out->type_union = types & BEAM_TYPE_ANY;
+    extra = 0;
+
+    out->type_union = flags & BEAM_TYPE_ANY;
+    out->metadata_flags = flags & BEAM_TYPE_METADATA_MASK;
+
+    if (out->metadata_flags & BEAM_TYPE_HAS_LOWER_BOUND) {
+        if (!(out->type_union & (BEAM_TYPE_FLOAT | BEAM_TYPE_INTEGER))) {
+            return -1;
+        }
 
-    if (types & BEAM_TYPE_HAS_LOWER_BOUND) {
         extra += 8;
     }
 
-    if (types & BEAM_TYPE_HAS_UPPER_BOUND) {
+    if (out->metadata_flags & BEAM_TYPE_HAS_UPPER_BOUND) {
+        if (!(out->type_union & (BEAM_TYPE_FLOAT | BEAM_TYPE_INTEGER))) {
+            return -1;
+        }
+
         extra += 8;
     }
 
-    if (types & BEAM_TYPE_HAS_UNIT) {
+    if (out->metadata_flags & BEAM_TYPE_HAS_UNIT) {
+        if (!(out->type_union & BEAM_TYPE_BITSTRING)) {
+            return -1;
+        }
+
         extra += 1;
     }
 
-    *raw_types_ptr = types;
     return extra;
 }
 
-void beam_types_decode_extra_otp_26(const byte *data, int types, BeamType *out) {
+void beam_types_decode_extra_otp_26(const byte *data, BeamType *out) {
     out->min = MAX_SMALL + 1;
     out->max = MIN_SMALL - 1;
     out->size_unit = 1;
 
-    if (types & BEAM_TYPE_HAS_LOWER_BOUND) {
+    if (out->metadata_flags & BEAM_TYPE_HAS_LOWER_BOUND) {
+        ASSERT(out->type_union & (BEAM_TYPE_FLOAT | BEAM_TYPE_INTEGER));
         out->min = get_sint64(data);
         data += 8;
     }
 
-    if (types & BEAM_TYPE_HAS_UPPER_BOUND) {
+    if (out->metadata_flags & BEAM_TYPE_HAS_UPPER_BOUND) {
+        ASSERT(out->type_union & (BEAM_TYPE_FLOAT | BEAM_TYPE_INTEGER));
         out->max = get_sint64(data);
         data += 8;
     }
 
-    if (types & BEAM_TYPE_HAS_UNIT) {
+    if (out->metadata_flags & BEAM_TYPE_HAS_UNIT) {
+        ASSERT(out->type_union & BEAM_TYPE_BITSTRING);
         out->size_unit = data[0] + 1;
     }
 }
@@ -97,9 +112,18 @@ int beam_types_decode_otp_25(const byte *data, Uint size, BeamType *out) {
     data += 8;
     out->max = get_sint64(data);
 
-    if (out->min > out->max) {
+    if (out->min <= out->max) {
+        if (!(out->type_union & (BEAM_TYPE_FLOAT | BEAM_TYPE_INTEGER))) {
+            return -1;
+        }
+
+        out->metadata_flags = (BEAM_TYPE_HAS_LOWER_BOUND |
+                               BEAM_TYPE_HAS_UPPER_BOUND);
+    } else {
         out->min = MAX_SMALL + 1;
         out->max = MIN_SMALL - 1;
+
+        out->metadata_flags = 0;
     }
 
     out->size_unit = 1;
diff --git a/erts/emulator/beam/beam_types.h b/erts/emulator/beam/beam_types.h
index cd15f37b98..fe215a1340 100644
--- a/erts/emulator/beam/beam_types.h
+++ b/erts/emulator/beam/beam_types.h
@@ -63,32 +63,33 @@
 #define BEAM_TYPE_HAS_UPPER_BOUND    (1 << 14)
 #define BEAM_TYPE_HAS_UNIT           (1 << 15)
 
+#define BEAM_TYPE_METADATA_MASK      (BEAM_TYPE_HAS_LOWER_BOUND | \
+                                      BEAM_TYPE_HAS_UPPER_BOUND | \
+                                      BEAM_TYPE_HAS_UNIT)
+
 typedef struct {
     /** @brief A set of the possible types (atom, tuple, etc) this term may
      * be. When a single bit is set, the term will always be of that type. */
     int type_union;
 
-    /** @brief Minimum and maximum values. Valid if at least one of
-     * IS_SSMALL(min) and IS_SSMALL(max) is true; otherwise the range is
-     * unknown.
-     *
-     * If and only if min < max, then the value is always a small within
-     * the range min trough max (including the endpoints).
-     *
-     * If and only if IS_SSMALL(min) && !IS_SSMALL(max) is true, then
-     * the value is greater than or equal to min.
-     *
-     * If and only if !IS_SSMALL(min) && IS_SSMALL(max), then the
-     * value is less than or equal to min. */
+    /** @brief A set of metadata presence flags, BEAM_TYPE_HAS_XYZ. */
+    int metadata_flags;
+
+    /** @brief Minimum numerical value. Only valid when the
+     * BEAM_TYPE_HAS_LOWER_BOUND metadata flag is present. */
     Sint64 min;
+
+    /** @brief Maximum numerical value. Only valid when the
+     * BEAM_TYPE_HAS_UPPER_BOUND metadata flag is present. */
     Sint64 max;
 
-    /** @brief Unit for bitstring size. */
+    /** @brief Unit for bitstring size. Only valid when the BEAM_TYPE_HAS_UNIT
+     * metadata flag is present. */
     byte size_unit;
 } BeamType;
 
-int beam_types_decode_type_otp_26(const byte *data, int *raw_types_ptr, BeamType *out);
-void beam_types_decode_extra_otp_26(const byte *data, int types, BeamType *out);
+int beam_types_decode_type_otp_26(const byte *data, BeamType *out);
+void beam_types_decode_extra_otp_26(const byte *data, BeamType *out);
 
 int beam_types_decode_otp_25(const byte *data, Uint size, BeamType *out);
 #endif
diff --git a/erts/emulator/beam/jit/arm/beam_asm.hpp b/erts/emulator/beam/jit/arm/beam_asm.hpp
index a6a3f3bb98..8ef609f4b2 100644
--- a/erts/emulator/beam/jit/arm/beam_asm.hpp
+++ b/erts/emulator/beam/jit/arm/beam_asm.hpp
@@ -60,18 +60,20 @@ extern "C"
 
 using namespace asmjit;
 
-class BeamAssembler : public ErrorHandler {
-protected:
-    /* Holds code and relocation information. */
-    CodeHolder code;
-
-    a64::Assembler a;
-
-    FileLogger logger;
+struct BeamAssembler : public BeamAssemblerCommon {
+    BeamAssembler() : BeamAssemblerCommon(a) {
+        Error err = code.attach(&a);
+        ERTS_ASSERT(!err && "Failed to attach codeHolder");
+    }
 
-    Section *rodata = nullptr;
+    BeamAssembler(const std::string &log) : BeamAssembler() {
+        if (erts_jit_asm_dump) {
+            setLogger(log + ".asm");
+        }
+    }
 
-    /* * * * * * * * * */
+protected:
+    a64::Assembler a;
 
     /* Points at x_reg_array inside an ErtsSchedulerRegisters struct, allowing
      * the aux_regs field to be addressed with an 8-bit displacement. */
@@ -224,27 +226,6 @@ protected:
         kNone = 0
     };
 
-public:
-    static bool hasCpuFeature(uint32_t featureId);
-
-    BeamAssembler();
-    BeamAssembler(const std::string &log);
-
-    ~BeamAssembler();
-
-    void *getBaseAddress();
-    size_t getOffset();
-
-protected:
-    void codegen(JitAllocator *allocator,
-                 const void **executable_ptr,
-                 void **writable_ptr);
-
-    void *getCode(Label label);
-    byte *getCode(char *labelName);
-
-    void handleError(Error err, const char *message, BaseEmitter *origin);
-
 #ifdef JIT_HARD_DEBUG
     constexpr arm::Mem getInitialSPRef() const {
         int base = offsetof(ErtsSchedulerRegisters, initial_sp);
@@ -823,125 +804,19 @@ protected:
             add(to, arm::GpX(mem.baseId()), offset);
         }
     }
-
-public:
-    void embed_rodata(const char *labelName, const char *buff, size_t size);
-    void embed_bss(const char *labelName, size_t size);
-    void embed_zeros(size_t size);
-
-    void setLogger(std::string log);
-    void setLogger(FILE *log);
-
-    void comment(const char *format) {
-        if (logger.file()) {
-            a.commentf("# %s", format);
-        }
-    }
-
-    template<typename... Ts>
-    void comment(const char *format, Ts... args) {
-        if (logger.file()) {
-            char buff[1024];
-            erts_snprintf(buff, sizeof(buff), format, args...);
-            a.commentf("# %s", buff);
-        }
-    }
-
-    struct AsmRange {
-        ErtsCodePtr start;
-        ErtsCodePtr stop;
-        const std::string name;
-
-        struct LineData {
-            ErtsCodePtr start;
-            const std::string file;
-            unsigned line;
-        };
-
-        const std::vector<LineData> lines;
-    };
-
-    void embed(void *data, uint32_t size) {
-        a.embed((char *)data, size);
-    }
 };
 
 #include "beam_asm_global.hpp"
 
-class BeamModuleAssembler : public BeamAssembler {
-    typedef unsigned BeamLabel;
-
-    /* Map of BEAM label number to asmjit Label. These should not be used
-     * directly by most instructions because of displacement limits, use
-     * `resolve_beam_label` instead. */
-    typedef std::unordered_map<BeamLabel, const Label> LabelMap;
-    LabelMap rawLabels;
+class BeamModuleAssembler : public BeamAssembler,
+                            public BeamModuleAssemblerCommon {
+    BeamGlobalAssembler *ga;
 
     /* Sequence number used to create unique named labels by
      * resolve_label(). Only used when assembly output has been
      * requested. */
     long labelSeq = 0;
 
-    struct patch {
-        Label where;
-        uint64_t val_offs;
-    };
-
-    struct patch_catch {
-        struct patch patch;
-        Label handler;
-    };
-    std::vector<struct patch_catch> catches;
-
-    /* Map of import entry to patch labels and mfa */
-    struct patch_import {
-        std::vector<struct patch> patches;
-        ErtsCodeMFA mfa;
-    };
-    typedef std::unordered_map<unsigned, struct patch_import> ImportMap;
-    ImportMap imports;
-
-    /* Map of fun entry to patch labels */
-    struct patch_lambda {
-        std::vector<struct patch> patches;
-        Label trampoline;
-    };
-    typedef std::unordered_map<unsigned, struct patch_lambda> LambdaMap;
-    LambdaMap lambdas;
-
-    /* Map of literals to patch labels */
-    struct patch_literal {
-        std::vector<struct patch> patches;
-    };
-    typedef std::unordered_map<unsigned, struct patch_literal> LiteralMap;
-    LiteralMap literals;
-
-    /* All string patches */
-    std::vector<struct patch> strings;
-
-    /* All functions that have been seen so far */
-    std::vector<BeamLabel> functions;
-
-    /* The BEAM file we've been loaded from, if any. */
-    const BeamFile *beam;
-
-    BeamGlobalAssembler *ga;
-
-    /* Used by emit to populate the labelToMFA map */
-    Label current_label;
-
-    /* The offset of our BeamCodeHeader, if any. */
-    Label code_header;
-
-    /* The module's on_load function, if any. */
-    Label on_load;
-
-    /* The end of the last function. Note that the dispatch table, constants,
-     * and veneers may follow. */
-    Label code_end;
-
-    Eterm mod;
-
     /* Save the last PC for an error. */
     size_t last_error_offset = 0;
 
@@ -1190,240 +1065,6 @@ public:
     void patchStrings(char *rw_base, const byte *string);
 
 protected:
-    const auto &getTypeEntry(const ArgSource &arg) const {
-        auto typeIndex =
-                arg.isRegister() ? arg.as<ArgRegister>().typeIndex() : 0;
-        ASSERT(typeIndex < beam->types.count);
-        return beam->types.entries[typeIndex];
-    }
-
-    auto getTypeUnion(const ArgSource &arg) const {
-        if (arg.isRegister()) {
-            return static_cast<BeamTypeId>(getTypeEntry(arg).type_union);
-        }
-
-        Eterm constant =
-                arg.isImmed()
-                        ? arg.as<ArgImmed>().get()
-                        : beamfile_get_literal(beam,
-                                               arg.as<ArgLiteral>().get());
-
-        switch (tag_val_def(constant)) {
-        case ATOM_DEF:
-            return BeamTypeId::Atom;
-        case BINARY_DEF:
-            return BeamTypeId::Bitstring;
-        case FLOAT_DEF:
-            return BeamTypeId::Float;
-        case FUN_DEF:
-            return BeamTypeId::Fun;
-        case BIG_DEF:
-        case SMALL_DEF:
-            return BeamTypeId::Integer;
-        case LIST_DEF:
-            return BeamTypeId::Cons;
-        case MAP_DEF:
-            return BeamTypeId::Map;
-        case NIL_DEF:
-            return BeamTypeId::Nil;
-        case EXTERNAL_PID_DEF:
-        case PID_DEF:
-            return BeamTypeId::Pid;
-        case EXTERNAL_PORT_DEF:
-        case PORT_DEF:
-            return BeamTypeId::Port;
-        case EXTERNAL_REF_DEF:
-        case REF_DEF:
-            return BeamTypeId::Reference;
-        case TUPLE_DEF:
-            return BeamTypeId::Tuple;
-        default:
-            ERTS_ASSERT(!"tag_val_def error");
-        }
-    }
-
-    auto getClampedRange(const ArgSource &arg) const {
-        if (arg.isSmall()) {
-            Sint value = arg.as<ArgSmall>().getSigned();
-            return std::make_pair(value, value);
-        } else {
-            const auto &entry = getTypeEntry(arg);
-
-            if (entry.min <= entry.max) {
-                return std::make_pair(entry.min, entry.max);
-            } else if (IS_SSMALL(entry.min) && !IS_SSMALL(entry.max)) {
-                return std::make_pair(entry.min, MAX_SMALL);
-            } else if (!IS_SSMALL(entry.min) && IS_SSMALL(entry.max)) {
-                return std::make_pair(MIN_SMALL, entry.max);
-            } else {
-                return std::make_pair(MIN_SMALL, MAX_SMALL);
-            }
-        }
-    }
-
-    int getSizeUnit(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        ASSERT(maybe_one_of<BeamTypeId::Bitstring>(arg));
-        return entry.size_unit;
-    }
-
-    bool hasLowerBound(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        return IS_SSMALL(entry.min) && !IS_SSMALL(entry.max);
-    }
-
-    bool hasUpperBound(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        return !IS_SSMALL(entry.min) && IS_SSMALL(entry.max);
-    }
-
-    bool always_small(const ArgSource &arg) const {
-        if (arg.isSmall()) {
-            return true;
-        } else if (!exact_type<BeamTypeId::Integer>(arg)) {
-            return false;
-        }
-
-        const auto &entry = getTypeEntry(arg);
-        return entry.min <= entry.max;
-    }
-
-    bool always_immediate(const ArgSource &arg) const {
-        return always_one_of<BeamTypeId::AlwaysImmediate>(arg) ||
-               always_small(arg);
-    }
-
-    bool always_same_types(const ArgSource &lhs, const ArgSource &rhs) const {
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto lhs_types = static_cast<integral>(getTypeUnion(lhs));
-        auto rhs_types = static_cast<integral>(getTypeUnion(rhs));
-
-        /* We can only be certain that the types are the same when there's
-         * one possible type. For example, if one is a number and the other
-         * is an integer, they could differ if the former is a float. */
-        if ((lhs_types & (lhs_types - 1)) == 0) {
-            return lhs_types == rhs_types;
-        }
-
-        return false;
-    }
-
-    template<BeamTypeId... Types>
-    bool never_one_of(const ArgSource &arg) const {
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return static_cast<BeamTypeId>(type_union & types) == BeamTypeId::None;
-    }
-
-    template<BeamTypeId... Types>
-    bool maybe_one_of(const ArgSource &arg) const {
-        return !never_one_of<Types...>(arg);
-    }
-
-    template<BeamTypeId... Types>
-    bool always_one_of(const ArgSource &arg) const {
-        /* Providing a single type to this function is not an error per se, but
-         * `exact_type` provides a bit more error checking for that use-case,
-         * so we want to encourage its use. */
-        static_assert(!BeamTypeIdUnion<Types...>::is_single_typed(),
-                      "always_one_of expects a union of several primitive "
-                      "types, use exact_type instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return type_union == (type_union & types);
-    }
-
-    template<BeamTypeId Type>
-    bool exact_type(const ArgSource &arg) const {
-        /* Rejects `exact_type<BeamTypeId::List>(...)` and similar, as it's
-         * almost always an error to exactly match a union of several types.
-         *
-         * On the off chance that you _do_ need to match a union exactly, use
-         * `masked_types<T>(arg) == T` instead. */
-        static_assert(BeamTypeIdUnion<Type>::is_single_typed(),
-                      "exact_type expects exactly one primitive type, use "
-                      "always_one_of instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return type_union == (type_union & static_cast<integral>(Type));
-    }
-
-    template<BeamTypeId Mask>
-    BeamTypeId masked_types(const ArgSource &arg) const {
-        static_assert((Mask != BeamTypeId::AlwaysBoxed &&
-                       Mask != BeamTypeId::AlwaysImmediate),
-                      "using masked_types with AlwaysBoxed or AlwaysImmediate "
-                      "is almost always an error, use exact_type, "
-                      "maybe_one_of, or never_one_of instead");
-        static_assert((Mask == BeamTypeId::MaybeBoxed ||
-                       Mask == BeamTypeId::MaybeImmediate ||
-                       Mask == BeamTypeId::AlwaysBoxed ||
-                       Mask == BeamTypeId::AlwaysImmediate),
-                      "masked_types expects a mask type like MaybeBoxed or "
-                      "MaybeImmediate, use exact_type, maybe_one_of, or"
-                      "never_one_of instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto mask = static_cast<integral>(Mask);
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return static_cast<BeamTypeId>(type_union & mask);
-    }
-
-    bool is_sum_small_if_args_are_small(const ArgSource &LHS,
-                                        const ArgSource &RHS) {
-        Sint min, max;
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        min = min1 + min2;
-        max = max1 + max2;
-        return IS_SSMALL(min) && IS_SSMALL(max);
-    }
-
-    bool is_diff_small_if_args_are_small(const ArgSource &LHS,
-                                         const ArgSource &RHS) {
-        Sint min, max;
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        min = min1 - max2;
-        max = max1 - min2;
-        return IS_SSMALL(min) && IS_SSMALL(max);
-    }
-
-    bool is_product_small_if_args_are_small(const ArgSource &LHS,
-                                            const ArgSource &RHS) {
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        auto mag1 = std::max(std::abs(min1), std::abs(max1));
-        auto mag2 = std::max(std::abs(min2), std::abs(max2));
-
-        /*
-         * mag1 * mag2 <= MAX_SMALL
-         * mag1 <= MAX_SMALL / mag2   (when mag2 != 0)
-         */
-        ERTS_CT_ASSERT(MAX_SMALL < -MIN_SMALL);
-        return mag2 == 0 || mag1 <= MAX_SMALL / mag2;
-    }
-
-    bool is_bsl_small(const ArgSource &LHS, const ArgSource &RHS) {
-        if (!(always_small(LHS) && always_small(RHS))) {
-            return false;
-        } else {
-            auto [min1, max1] = getClampedRange(LHS);
-            auto [min2, max2] = getClampedRange(RHS);
-
-            if (min1 < 0 || max1 == 0 || min2 < 0) {
-                return false;
-            }
-
-            return max2 < Support::clz(max1) - _TAG_IMMED1_SIZE;
-        }
-    }
-
-    /* Helpers */
     void emit_gc_test(const ArgWord &Stack,
                       const ArgWord &Heap,
                       const ArgWord &Live);
@@ -1971,10 +1612,9 @@ protected:
     }
 };
 
-void beamasm_metadata_update(
-        std::string module_name,
-        ErtsCodePtr base_address,
-        size_t code_size,
-        const std::vector<BeamAssembler::AsmRange> &ranges);
+void beamasm_metadata_update(std::string module_name,
+                             ErtsCodePtr base_address,
+                             size_t code_size,
+                             const std::vector<AsmRange> &ranges);
 void beamasm_metadata_early_init();
 void beamasm_metadata_late_init();
diff --git a/erts/emulator/beam/jit/arm/beam_asm_module.cpp b/erts/emulator/beam/jit/arm/beam_asm_module.cpp
index c368aeb47e..57f5746a8c 100644
--- a/erts/emulator/beam/jit/arm/beam_asm_module.cpp
+++ b/erts/emulator/beam/jit/arm/beam_asm_module.cpp
@@ -475,80 +475,6 @@ void BeamModuleAssembler::emit_call_error_handler() {
     emit_nyi("call_error_handler should never be called");
 }
 
-unsigned BeamModuleAssembler::patchCatches(char *rw_base) {
-    unsigned catch_no = BEAM_CATCHES_NIL;
-
-    for (const auto &c : catches) {
-        const auto &patch = c.patch;
-        ErtsCodePtr handler;
-
-        handler = (ErtsCodePtr)getCode(c.handler);
-        catch_no = beam_catches_cons(handler, catch_no, nullptr);
-
-        /* Patch the `mov` instruction with the catch tag */
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset];
-
-        ASSERT(LLONG_MAX == *where);
-        Eterm catch_term = make_catch(catch_no);
-
-        /* With the current tag scheme, more than 33 million
-         * catches can exist at once. */
-        ERTS_ASSERT(catch_term >> 31 == 0);
-
-        *where = catch_term;
-    }
-
-    return catch_no;
-}
-
-void BeamModuleAssembler::patchImport(char *rw_base,
-                                      unsigned index,
-                                      const Export *import) {
-    for (const auto &patch : imports[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = reinterpret_cast<Eterm>(import) + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchLambda(char *rw_base,
-                                      unsigned index,
-                                      const ErlFunEntry *fe) {
-    for (const auto &patch : lambdas[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = reinterpret_cast<Eterm>(fe) + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchLiteral(char *rw_base,
-                                       unsigned index,
-                                       Eterm lit) {
-    for (const auto &patch : literals[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = lit + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchStrings(char *rw_base,
-                                       const byte *string_table) {
-    for (const auto &patch : strings) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (const byte **)&rw_base[offset];
-
-        ASSERT(LLONG_MAX == (Eterm)*where);
-        *where = string_table + patch.val_offs;
-    }
-}
-
 const Label &BeamModuleAssembler::resolve_beam_label(const ArgLabel &Lbl,
                                                      enum Displacement disp) {
     ASSERT(Lbl.isLabel());
@@ -804,30 +730,37 @@ void BeamModuleAssembler::emit_constant(const Constant &constant) {
     } else if (value.isLabel()) {
         a.embedLabel(rawLabels.at(value.as<ArgLabel>().get()));
     } else {
-        a.embedUInt64(LLONG_MAX);
-
         switch (value.getType()) {
         case ArgVal::BytePtr:
-            strings.push_back({anchor, value.as<ArgBytePtr>().get()});
+            strings.push_back({anchor, 0, value.as<ArgBytePtr>().get()});
+            a.embedUInt64(LLONG_MAX);
             break;
         case ArgVal::Catch: {
             auto handler = rawLabels[value.as<ArgCatch>().get()];
-            catches.push_back({{anchor, 0}, handler});
+            catches.push_back({{anchor, 0, 0}, handler});
+
+            /* Catches are limited to 32 bits, but since we don't want to load
+             * 32-bit argument values due to displacement limits, we'll store
+             * this as a 64-bit value with the upper bits cleared. */
+            a.embedUInt64(INT_MAX);
             break;
         }
         case ArgVal::Export: {
             auto index = value.as<ArgExport>().get();
-            imports[index].patches.push_back({anchor, 0});
+            imports[index].patches.push_back({anchor, 0, 0});
+            a.embedUInt64(LLONG_MAX);
             break;
         }
         case ArgVal::FunEntry: {
             auto index = value.as<ArgLambda>().get();
-            lambdas[index].patches.push_back({anchor, 0});
+            lambdas[index].patches.push_back({anchor, 0, 0});
+            a.embedUInt64(LLONG_MAX);
             break;
         }
         case ArgVal::Literal: {
             auto index = value.as<ArgLiteral>().get();
-            literals[index].patches.push_back({anchor, 0});
+            literals[index].patches.push_back({anchor, 0, 0});
+            a.embedUInt64(LLONG_MAX);
             break;
         }
         default:
diff --git a/erts/emulator/beam/jit/beam_jit_common.cpp b/erts/emulator/beam/jit/beam_jit_common.cpp
index f27897b80b..a0bb07ce56 100644
--- a/erts/emulator/beam/jit/beam_jit_common.cpp
+++ b/erts/emulator/beam/jit/beam_jit_common.cpp
@@ -42,7 +42,8 @@ static std::string getAtom(Eterm atom) {
     return std::string((char *)ap->name, ap->len);
 }
 
-BeamAssembler::BeamAssembler() : code() {
+BeamAssemblerCommon::BeamAssemblerCommon(BaseAssembler &assembler_)
+        : assembler(assembler_), code() {
     /* Setup with default code info */
     Error err = code.init(Environment::host());
     ERTS_ASSERT(!err && "Failed to init codeHolder");
@@ -54,41 +55,32 @@ BeamAssembler::BeamAssembler() : code() {
                           8);
     ERTS_ASSERT(!err && "Failed to create .rodata section");
 
-    err = code.attach(&a);
-
-    ERTS_ASSERT(!err && "Failed to attach codeHolder");
 #ifdef DEBUG
-    a.addDiagnosticOptions(DiagnosticOptions::kValidateAssembler);
+    assembler.addDiagnosticOptions(DiagnosticOptions::kValidateAssembler);
 #endif
-    a.addEncodingOptions(EncodingOptions::kOptimizeForSize |
-                         EncodingOptions::kOptimizedAlign);
+    assembler.addEncodingOptions(EncodingOptions::kOptimizeForSize |
+                                 EncodingOptions::kOptimizedAlign);
     code.setErrorHandler(this);
 }
 
-BeamAssembler::BeamAssembler(const std::string &log) : BeamAssembler() {
-    if (erts_jit_asm_dump) {
-        setLogger(log + ".asm");
-    }
-}
-
-BeamAssembler::~BeamAssembler() {
+BeamAssemblerCommon::~BeamAssemblerCommon() {
     if (logger.file()) {
         fclose(logger.file());
     }
 }
 
-void *BeamAssembler::getBaseAddress() {
+void *BeamAssemblerCommon::getBaseAddress() {
     ASSERT(code.hasBaseAddress());
     return (void *)code.baseAddress();
 }
 
-size_t BeamAssembler::getOffset() {
-    return a.offset();
+size_t BeamAssemblerCommon::getOffset() {
+    return assembler.offset();
 }
 
-void BeamAssembler::codegen(JitAllocator *allocator,
-                            const void **executable_ptr,
-                            void **writable_ptr) {
+void BeamAssemblerCommon::codegen(JitAllocator *allocator,
+                                  const void **executable_ptr,
+                                  void **writable_ptr) {
     Error err;
 
     err = code.flatten();
@@ -137,18 +129,18 @@ void BeamAssembler::codegen(JitAllocator *allocator,
 #endif
 }
 
-void *BeamAssembler::getCode(Label label) {
+void *BeamAssemblerCommon::getCode(Label label) {
     ASSERT(label.isValid());
     return (char *)getBaseAddress() + code.labelOffsetFromBase(label);
 }
 
-byte *BeamAssembler::getCode(char *labelName) {
+byte *BeamAssemblerCommon::getCode(char *labelName) {
     return (byte *)getCode(code.labelByName(labelName, strlen(labelName)));
 }
 
-void BeamAssembler::handleError(Error err,
-                                const char *message,
-                                BaseEmitter *origin) {
+void BeamAssemblerCommon::handleError(Error err,
+                                      const char *message,
+                                      BaseEmitter *origin) {
     comment(message);
 
     if (logger.file() != NULL) {
@@ -158,42 +150,42 @@ void BeamAssembler::handleError(Error err,
     ASSERT(0 && "Failed to encode instruction");
 }
 
-void BeamAssembler::embed_rodata(const char *labelName,
-                                 const char *buff,
-                                 size_t size) {
-    Label label = a.newNamedLabel(labelName);
+void BeamAssemblerCommon::embed_rodata(const char *labelName,
+                                       const char *buff,
+                                       size_t size) {
+    Label label = assembler.newNamedLabel(labelName);
 
-    a.section(rodata);
-    a.bind(label);
-    a.embed(buff, size);
-    a.section(code.textSection());
+    assembler.section(rodata);
+    assembler.bind(label);
+    assembler.embed(buff, size);
+    assembler.section(code.textSection());
 }
 
-void BeamAssembler::embed_bss(const char *labelName, size_t size) {
-    Label label = a.newNamedLabel(labelName);
+void BeamAssemblerCommon::embed_bss(const char *labelName, size_t size) {
+    Label label = assembler.newNamedLabel(labelName);
 
     /* Reuse rodata section for now */
-    a.section(rodata);
-    a.bind(label);
+    assembler.section(rodata);
+    assembler.bind(label);
     embed_zeros(size);
-    a.section(code.textSection());
+    assembler.section(code.textSection());
 }
 
-void BeamAssembler::embed_zeros(size_t size) {
+void BeamAssemblerCommon::embed_zeros(size_t size) {
     static constexpr size_t buf_size = 16384;
     static const char zeros[buf_size] = {};
 
     while (size >= buf_size) {
-        a.embed(zeros, buf_size);
+        assembler.embed(zeros, buf_size);
         size -= buf_size;
     }
 
     if (size > 0) {
-        a.embed(zeros, size);
+        assembler.embed(zeros, size);
     }
 }
 
-void BeamAssembler::setLogger(std::string log) {
+void BeamAssemblerCommon::setLogger(const std::string &log) {
     FILE *f = fopen(log.data(), "w+");
 
     /* FIXME: Don't crash when loading multiple modules with the same name.
@@ -206,7 +198,7 @@ void BeamAssembler::setLogger(std::string log) {
     setLogger(f);
 }
 
-void BeamAssembler::setLogger(FILE *log) {
+void BeamAssemblerCommon::setLogger(FILE *log) {
     logger.setFile(log);
     logger.setIndentation(FormatIndentationGroup::kCode, 4);
     code.setLogger(&logger);
@@ -274,7 +266,8 @@ BeamModuleAssembler::BeamModuleAssembler(BeamGlobalAssembler *_ga,
                                          Eterm _mod,
                                          int num_labels,
                                          const BeamFile *file)
-        : BeamAssembler(getAtom(_mod)), beam(file), ga(_ga), mod(_mod) {
+        : BeamAssembler(getAtom(_mod)), BeamModuleAssemblerCommon(file, _mod),
+          ga(_ga) {
     rawLabels.reserve(num_labels + 1);
 
     if (logger.file() && beam) {
@@ -497,6 +490,80 @@ const ErtsCodeInfo *BeamModuleAssembler::getOnLoad() {
     }
 }
 
+unsigned BeamModuleAssembler::patchCatches(char *rw_base) {
+    unsigned catch_no = BEAM_CATCHES_NIL;
+
+    for (const auto &c : catches) {
+        const auto &patch = c.patch;
+        ErtsCodePtr handler;
+
+        handler = (ErtsCodePtr)getCode(c.handler);
+        catch_no = beam_catches_cons(handler, catch_no, nullptr);
+
+        /* Patch the `mov` instruction with the catch tag */
+        auto offset = code.labelOffsetFromBase(patch.where);
+        auto where = (int32_t *)&rw_base[offset + patch.ptr_offs];
+
+        ASSERT(INT_MAX == *where);
+        Eterm catch_term = make_catch(catch_no);
+
+        /* With the current tag scheme, more than 33 million
+         * catches can exist at once. */
+        ERTS_ASSERT(catch_term >> 31 == 0);
+
+        *where = catch_term;
+    }
+
+    return catch_no;
+}
+
+void BeamModuleAssembler::patchImport(char *rw_base,
+                                      unsigned index,
+                                      const Export *import) {
+    for (const auto &patch : imports[index].patches) {
+        auto offset = code.labelOffsetFromBase(patch.where);
+        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
+
+        ASSERT(LLONG_MAX == *where);
+        *where = reinterpret_cast<Eterm>(import) + patch.val_offs;
+    }
+}
+
+void BeamModuleAssembler::patchLambda(char *rw_base,
+                                      unsigned index,
+                                      const ErlFunEntry *fe) {
+    for (const auto &patch : lambdas[index].patches) {
+        auto offset = code.labelOffsetFromBase(patch.where);
+        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
+
+        ASSERT(LLONG_MAX == *where);
+        *where = reinterpret_cast<Eterm>(fe) + patch.val_offs;
+    }
+}
+
+void BeamModuleAssembler::patchLiteral(char *rw_base,
+                                       unsigned index,
+                                       Eterm lit) {
+    for (const auto &patch : literals[index].patches) {
+        auto offset = code.labelOffsetFromBase(patch.where);
+        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
+
+        ASSERT(LLONG_MAX == *where);
+        *where = lit + patch.val_offs;
+    }
+}
+
+void BeamModuleAssembler::patchStrings(char *rw_base,
+                                       const byte *string_table) {
+    for (const auto &patch : strings) {
+        auto offset = code.labelOffsetFromBase(patch.where);
+        auto where = (const byte **)&rw_base[offset + patch.ptr_offs];
+
+        ASSERT(LLONG_MAX == (Eterm)*where);
+        *where = string_table + patch.val_offs;
+    }
+}
+
 /* ** */
 
 #if defined(DEBUG) && defined(JIT_HARD_DEBUG)
diff --git a/erts/emulator/beam/jit/beam_jit_common.hpp b/erts/emulator/beam/jit/beam_jit_common.hpp
index b78ca5341d..c7b9f0ade0 100644
--- a/erts/emulator/beam/jit/beam_jit_common.hpp
+++ b/erts/emulator/beam/jit/beam_jit_common.hpp
@@ -21,6 +21,10 @@
 #ifndef __BEAM_JIT_COMMON_HPP__
 #define __BEAM_JIT_COMMON_HPP__
 
+#ifndef ASMJIT_ASMJIT_H_INCLUDED
+#    include <asmjit/asmjit.hpp>
+#endif
+
 #include <string>
 #include <vector>
 #include <unordered_map>
@@ -36,102 +40,390 @@ extern "C"
 #include "bif.h"
 #include "erl_vm.h"
 #include "global.h"
+#include "big.h"
 #include "beam_file.h"
 #include "beam_types.h"
 }
 
-/* Type-safe wrapper around the definitions in beam_types.h. We've redefined it
- * as an `enum class` to force the usage of our helpers, which lets us check
- * for common usage errors at compile time. */
-enum class BeamTypeId : int {
-    None = BEAM_TYPE_NONE,
-
-    Atom = BEAM_TYPE_ATOM,
-    Bitstring = BEAM_TYPE_BITSTRING,
-    BsMatchState = BEAM_TYPE_BS_MATCHSTATE,
-    Cons = BEAM_TYPE_CONS,
-    Float = BEAM_TYPE_FLOAT,
-    Fun = BEAM_TYPE_FUN,
-    Integer = BEAM_TYPE_INTEGER,
-    Map = BEAM_TYPE_MAP,
-    Nil = BEAM_TYPE_NIL,
-    Pid = BEAM_TYPE_PID,
-    Port = BEAM_TYPE_PORT,
-    Reference = BEAM_TYPE_REFERENCE,
-    Tuple = BEAM_TYPE_TUPLE,
-
-    Any = BEAM_TYPE_ANY,
-
-    Identifier = Pid | Port | Reference,
-    List = Cons | Nil,
-    Number = Float | Integer,
-
-    /** @brief Types that can be boxed, including those that may also be
-     * immediates (e.g. pids, integers). */
-    MaybeBoxed = Bitstring | BsMatchState | Float | Fun | Integer | Map | Pid |
-                 Port | Reference | Tuple,
-    /** @brief Types that can be immediates, including those that may also be
-     * boxed (e.g. pids, integers). */
-    MaybeImmediate = Atom | Integer | Nil | Pid | Port,
-
-    /** @brief Types that are _always_ boxed. */
-    AlwaysBoxed = MaybeBoxed & ~(Cons | MaybeImmediate),
-    /** @brief Types that are _always_ immediates. */
-    AlwaysImmediate = MaybeImmediate & ~(Cons | MaybeBoxed),
+/* On Windows, the min and max macros may be defined. */
+#undef min
+#undef max
+
+#include "beam_jit_args.hpp"
+#include "beam_jit_types.hpp"
+
+using namespace asmjit;
+
+struct AsmRange {
+    ErtsCodePtr start;
+    ErtsCodePtr stop;
+    const std::string name;
+
+    struct LineData {
+        ErtsCodePtr start;
+        const std::string file;
+        unsigned line;
+    };
+
+    const std::vector<LineData> lines;
 };
 
-template<BeamTypeId... T>
-struct BeamTypeIdUnion;
+/* This is a partial class for `BeamAssembler`, containing various fields and
+ * helper functions that are common to all architectures so that we won't have
+ * to redefine them all the time. */
+class BeamAssemblerCommon : public ErrorHandler {
+    BaseAssembler &assembler;
+
+protected:
+    CodeHolder code;
+    FileLogger logger;
+    Section *rodata;
 
-template<>
-struct BeamTypeIdUnion<> {
-    static constexpr BeamTypeId value() {
-        return BeamTypeId::None;
+    static bool hasCpuFeature(uint32_t featureId);
+
+    BeamAssemblerCommon(BaseAssembler &assembler);
+    ~BeamAssemblerCommon();
+
+    void codegen(JitAllocator *allocator,
+                 const void **executable_ptr,
+                 void **writable_ptr);
+
+    void comment(const char *format) {
+        if (logger.file()) {
+            assembler.commentf("# %s", format);
+        }
     }
-};
 
-template<BeamTypeId T, BeamTypeId... Rest>
-struct BeamTypeIdUnion<T, Rest...> : BeamTypeIdUnion<Rest...> {
-    using integral = std::underlying_type_t<BeamTypeId>;
-    using super = BeamTypeIdUnion<Rest...>;
-
-    /* Overlapping type specifications are redundant at best and a subtle error
-     * at worst. We've had several bugs where `Integer | MaybeBoxed` was used
-     * instead of `Integer | AlwaysBoxed` or similar, and erroneously drew the
-     * conclusion that the value is always an integer when not boxed, when it
-     * could also be a pid or port. */
-    static constexpr bool no_overlap =
-            (static_cast<integral>(super::value()) &
-             static_cast<integral>(T)) == BEAM_TYPE_NONE;
-    static constexpr bool no_boxed_overlap =
-            no_overlap || (super::value() != BeamTypeId::MaybeBoxed &&
-                           T != BeamTypeId::MaybeBoxed);
-    static constexpr bool no_immed_overlap =
-            no_overlap || (super::value() != BeamTypeId::MaybeImmediate &&
-                           T != BeamTypeId::MaybeImmediate);
-
-    static_assert(no_boxed_overlap,
-                  "types must not overlap, did you mean to use "
-                  "BeamTypeId::AlwaysBoxed here?");
-    static_assert(no_immed_overlap,
-                  "types must not overlap, did you mean to use "
-                  "BeamTypeId::AlwaysImmediate here?");
-    static_assert(no_overlap || no_boxed_overlap || no_immed_overlap,
-                  "types must not overlap");
-
-    static constexpr bool is_single_typed() {
-        constexpr auto V = static_cast<integral>(value());
-        return (static_cast<integral>(V) & (static_cast<integral>(V) - 1)) ==
-               BEAM_TYPE_NONE;
-    }
-
-    static constexpr BeamTypeId value() {
-        return static_cast<BeamTypeId>(static_cast<integral>(super::value()) |
-                                       static_cast<integral>(T));
+    template<typename... Ts>
+    void comment(const char *format, Ts... args) {
+        if (logger.file()) {
+            char buff[1024];
+            erts_snprintf(buff, sizeof(buff), format, args...);
+            assembler.commentf("# %s", buff);
+        }
     }
+
+    void *getCode(Label label);
+    byte *getCode(char *labelName);
+
+    void embed(void *data, uint32_t size) {
+        assembler.embed((char *)data, size);
+    }
+
+    void handleError(Error err, const char *message, BaseEmitter *origin);
+
+    void setLogger(const std::string &log);
+    void setLogger(FILE *log);
+
+public:
+    void embed_rodata(const char *labelName, const char *buff, size_t size);
+    void embed_bss(const char *labelName, size_t size);
+    void embed_zeros(size_t size);
+
+    void *getBaseAddress();
+    size_t getOffset();
 };
 
-#include "beam_jit_args.hpp"
+struct BeamModuleAssemblerCommon {
+    typedef unsigned BeamLabel;
+
+    /* The BEAM file we've been loaded from, if any. */
+    const BeamFile *beam;
+    Eterm mod;
+
+    /* Map of label number to asmjit Label */
+    typedef std::unordered_map<BeamLabel, const Label> LabelMap;
+    LabelMap rawLabels;
+
+    struct patch {
+        Label where;
+        size_t ptr_offs;
+        size_t val_offs;
+    };
+
+    struct patch_catch {
+        struct patch patch;
+        Label handler;
+    };
+    std::vector<struct patch_catch> catches;
+
+    /* Map of import entry to patch labels and mfa */
+    struct patch_import {
+        std::vector<struct patch> patches;
+        ErtsCodeMFA mfa;
+    };
+    typedef std::unordered_map<unsigned, struct patch_import> ImportMap;
+    ImportMap imports;
+
+    /* Map of fun entry to trampoline labels and patches */
+    struct patch_lambda {
+        std::vector<struct patch> patches;
+        Label trampoline;
+    };
+    typedef std::unordered_map<unsigned, struct patch_lambda> LambdaMap;
+    LambdaMap lambdas;
+
+    /* Map of literals to patch labels */
+    struct patch_literal {
+        std::vector<struct patch> patches;
+    };
+    typedef std::unordered_map<unsigned, struct patch_literal> LiteralMap;
+    LiteralMap literals;
+
+    /* All string patches */
+    std::vector<struct patch> strings;
+
+    /* All functions that have been seen so far */
+    std::vector<BeamLabel> functions;
+
+    /* Used by emit to populate the labelToMFA map */
+    Label current_label;
+
+    /* The offset of our BeamCodeHeader, if any. */
+    Label code_header;
+
+    /* The module's on_load function, if any. */
+    Label on_load;
+
+    /* The end of the last function. Note that the dispatch table, constants,
+     * and veneers may follow. */
+    Label code_end;
+
+    BeamModuleAssemblerCommon(const BeamFile *beam_, Eterm mod_)
+            : beam(beam_), mod(mod_) {
+    }
+
+    /* Helpers */
+    const auto &getTypeEntry(const ArgSource &arg) const {
+        auto typeIndex =
+                arg.isRegister() ? arg.as<ArgRegister>().typeIndex() : 0;
+        ASSERT(typeIndex < beam->types.count);
+        return static_cast<BeamArgType &>(beam->types.entries[typeIndex]);
+    }
+
+    auto getTypeUnion(const ArgSource &arg) const {
+        if (arg.isRegister()) {
+            return getTypeEntry(arg).type();
+        }
+
+        Eterm constant =
+                arg.isImmed()
+                        ? arg.as<ArgImmed>().get()
+                        : beamfile_get_literal(beam,
+                                               arg.as<ArgLiteral>().get());
+
+        switch (tag_val_def(constant)) {
+        case ATOM_DEF:
+            return BeamTypeId::Atom;
+        case BINARY_DEF:
+            return BeamTypeId::Bitstring;
+        case FLOAT_DEF:
+            return BeamTypeId::Float;
+        case FUN_DEF:
+            return BeamTypeId::Fun;
+        case BIG_DEF:
+        case SMALL_DEF:
+            return BeamTypeId::Integer;
+        case LIST_DEF:
+            return BeamTypeId::Cons;
+        case MAP_DEF:
+            return BeamTypeId::Map;
+        case NIL_DEF:
+            return BeamTypeId::Nil;
+        case EXTERNAL_PID_DEF:
+        case PID_DEF:
+            return BeamTypeId::Pid;
+        case EXTERNAL_PORT_DEF:
+        case PORT_DEF:
+            return BeamTypeId::Port;
+        case EXTERNAL_REF_DEF:
+        case REF_DEF:
+            return BeamTypeId::Reference;
+        case TUPLE_DEF:
+            return BeamTypeId::Tuple;
+        default:
+            ERTS_ASSERT(!"tag_val_def error");
+        }
+    }
+
+    auto getClampedRange(const ArgSource &arg) const {
+        if (arg.isSmall()) {
+            Sint value = arg.as<ArgSmall>().getSigned();
+            return std::make_pair(value, value);
+        } else {
+            const auto &entry = getTypeEntry(arg);
+
+            auto min = entry.hasLowerBound() ? entry.min() : MIN_SMALL;
+            auto max = entry.hasUpperBound() ? entry.max() : MAX_SMALL;
+
+            return std::make_pair(min, max);
+        }
+    }
+
+    bool always_small(const ArgSource &arg) const {
+        if (arg.isSmall()) {
+            return true;
+        } else if (!exact_type<BeamTypeId::Integer>(arg)) {
+            return false;
+        }
+
+        const auto &entry = getTypeEntry(arg);
+
+        if (entry.hasLowerBound() && entry.hasUpperBound()) {
+            return IS_SSMALL(entry.min()) && IS_SSMALL(entry.max());
+        }
+
+        return false;
+    }
+
+    bool always_immediate(const ArgSource &arg) const {
+        return always_one_of<BeamTypeId::AlwaysImmediate>(arg) ||
+               always_small(arg);
+    }
+
+    bool always_same_types(const ArgSource &lhs, const ArgSource &rhs) const {
+        using integral = std::underlying_type_t<BeamTypeId>;
+        auto lhs_types = static_cast<integral>(getTypeUnion(lhs));
+        auto rhs_types = static_cast<integral>(getTypeUnion(rhs));
+
+        /* We can only be certain that the types are the same when there's
+         * one possible type. For example, if one is a number and the other
+         * is an integer, they could differ if the former is a float. */
+        if ((lhs_types & (lhs_types - 1)) == 0) {
+            return lhs_types == rhs_types;
+        }
+
+        return false;
+    }
+
+    template<BeamTypeId... Types>
+    bool never_one_of(const ArgSource &arg) const {
+        using integral = std::underlying_type_t<BeamTypeId>;
+        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
+        auto type_union = static_cast<integral>(getTypeUnion(arg));
+        return static_cast<BeamTypeId>(type_union & types) == BeamTypeId::None;
+    }
+
+    template<BeamTypeId... Types>
+    bool maybe_one_of(const ArgSource &arg) const {
+        return !never_one_of<Types...>(arg);
+    }
+
+    template<BeamTypeId... Types>
+    bool always_one_of(const ArgSource &arg) const {
+        /* Providing a single type to this function is not an error per se, but
+         * `exact_type` provides a bit more error checking for that use-case,
+         * so we want to encourage its use. */
+        static_assert(!BeamTypeIdUnion<Types...>::is_single_typed(),
+                      "always_one_of expects a union of several primitive "
+                      "types, use exact_type instead");
+
+        using integral = std::underlying_type_t<BeamTypeId>;
+        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
+        auto type_union = static_cast<integral>(getTypeUnion(arg));
+        return type_union == (type_union & types);
+    }
+
+    template<BeamTypeId Type>
+    bool exact_type(const ArgSource &arg) const {
+        /* Rejects `exact_type<BeamTypeId::List>(...)` and similar, as it's
+         * almost always an error to exactly match a union of several types.
+         *
+         * On the off chance that you _do_ need to match a union exactly, use
+         * `masked_types<T>(arg) == T` instead. */
+        static_assert(BeamTypeIdUnion<Type>::is_single_typed(),
+                      "exact_type expects exactly one primitive type, use "
+                      "always_one_of instead");
+
+        using integral = std::underlying_type_t<BeamTypeId>;
+        auto type_union = static_cast<integral>(getTypeUnion(arg));
+        return type_union == (type_union & static_cast<integral>(Type));
+    }
+
+    template<BeamTypeId Mask>
+    BeamTypeId masked_types(const ArgSource &arg) const {
+        static_assert((Mask != BeamTypeId::AlwaysBoxed &&
+                       Mask != BeamTypeId::AlwaysImmediate),
+                      "using masked_types with AlwaysBoxed or AlwaysImmediate "
+                      "is almost always an error, use exact_type, "
+                      "maybe_one_of, or never_one_of instead");
+        static_assert((Mask == BeamTypeId::MaybeBoxed ||
+                       Mask == BeamTypeId::MaybeImmediate ||
+                       Mask == BeamTypeId::AlwaysBoxed ||
+                       Mask == BeamTypeId::AlwaysImmediate),
+                      "masked_types expects a mask type like MaybeBoxed or "
+                      "MaybeImmediate, use exact_type, maybe_one_of, or"
+                      "never_one_of instead");
+
+        using integral = std::underlying_type_t<BeamTypeId>;
+        auto mask = static_cast<integral>(Mask);
+        auto type_union = static_cast<integral>(getTypeUnion(arg));
+        return static_cast<BeamTypeId>(type_union & mask);
+    }
+
+    bool is_sum_small_if_args_are_small(const ArgSource &LHS,
+                                        const ArgSource &RHS) const {
+        Sint min, max;
+        auto [min1, max1] = getClampedRange(LHS);
+        auto [min2, max2] = getClampedRange(RHS);
+        min = min1 + min2;
+        max = max1 + max2;
+        return IS_SSMALL(min) && IS_SSMALL(max);
+    }
+
+    bool is_diff_small_if_args_are_small(const ArgSource &LHS,
+                                         const ArgSource &RHS) const {
+        Sint min, max;
+        auto [min1, max1] = getClampedRange(LHS);
+        auto [min2, max2] = getClampedRange(RHS);
+        min = min1 - max2;
+        max = max1 - min2;
+        return IS_SSMALL(min) && IS_SSMALL(max);
+    }
+
+    bool is_product_small_if_args_are_small(const ArgSource &LHS,
+                                            const ArgSource &RHS) const {
+        auto [min1, max1] = getClampedRange(LHS);
+        auto [min2, max2] = getClampedRange(RHS);
+        auto mag1 = std::max(std::abs(min1), std::abs(max1));
+        auto mag2 = std::max(std::abs(min2), std::abs(max2));
+
+        /*
+         * mag1 * mag2 <= MAX_SMALL
+         * mag1 <= MAX_SMALL / mag2   (when mag2 != 0)
+         */
+        ERTS_CT_ASSERT(MAX_SMALL < -MIN_SMALL);
+        return mag2 == 0 || mag1 <= MAX_SMALL / mag2;
+    }
+
+    bool is_bsl_small(const ArgSource &LHS, const ArgSource &RHS) const {
+        if (!(always_small(LHS) && always_small(RHS))) {
+            return false;
+        } else {
+            auto [min1, max1] = getClampedRange(LHS);
+            auto [min2, max2] = getClampedRange(RHS);
+
+            if (min1 < 0 || max1 == 0 || min2 < 0) {
+                return false;
+            }
+
+            return max2 < asmjit::Support::clz(max1) - _TAG_IMMED1_SIZE;
+        }
+    }
+
+    int getSizeUnit(const ArgSource &arg) const {
+        auto entry = getTypeEntry(arg);
+        return entry.hasUnit() ? entry.unit() : 1;
+    }
+
+    bool hasLowerBound(const ArgSource &arg) const {
+        return getTypeEntry(arg).hasLowerBound();
+    }
+
+    bool hasUpperBound(const ArgSource &arg) const {
+        return getTypeEntry(arg).hasUpperBound();
+    }
+};
 
 /* This is a view into a contiguous container (like an array or `std::vector`),
  * letting us reuse the existing argument array in `beamasm_emit` while keeping
diff --git a/erts/emulator/beam/jit/beam_jit_main.cpp b/erts/emulator/beam/jit/beam_jit_main.cpp
index 8dc457b46a..7cd8dbf2aa 100644
--- a/erts/emulator/beam/jit/beam_jit_main.cpp
+++ b/erts/emulator/beam/jit/beam_jit_main.cpp
@@ -364,7 +364,7 @@ void beamasm_init() {
     beamasm_metadata_late_init();
 }
 
-bool BeamAssembler::hasCpuFeature(uint32_t featureId) {
+bool BeamAssemblerCommon::hasCpuFeature(uint32_t featureId) {
     return cpuinfo.hasFeature(featureId);
 }
 
diff --git a/erts/emulator/beam/jit/beam_jit_metadata.cpp b/erts/emulator/beam/jit/beam_jit_metadata.cpp
index 68b59babd4..780fd97c97 100644
--- a/erts/emulator/beam/jit/beam_jit_metadata.cpp
+++ b/erts/emulator/beam/jit/beam_jit_metadata.cpp
@@ -155,11 +155,10 @@ static void beamasm_init_late_gdb() {
     erts_mtx_unlock(&__jit_debug_descriptor.mutex);
 }
 
-static void beamasm_update_gdb_info(
-        std::string module_name,
-        ErtsCodePtr base_address,
-        size_t code_size,
-        const std::vector<BeamAssembler::AsmRange> &ranges) {
+static void beamasm_update_gdb_info(std::string module_name,
+                                    ErtsCodePtr base_address,
+                                    size_t code_size,
+                                    const std::vector<AsmRange> &ranges) {
     Sint symfile_size = sizeof(struct debug_info) + module_name.size() + 1;
 
     for (const auto &range : ranges) {
@@ -336,7 +335,7 @@ public:
         return true;
     }
 
-    void update(const std::vector<BeamAssembler::AsmRange> &ranges) {
+    void update(const std::vector<AsmRange> &ranges) {
         struct JitCodeLoadRecord {
             RecordHeader header;
             Uint32 pid;
@@ -353,7 +352,7 @@ public:
         record.pid = getpid();
         record.tid = erts_thr_self();
 
-        for (const BeamAssembler::AsmRange &range : ranges) {
+        for (const AsmRange &range : ranges) {
             /* Line entries must be written first, if present. */
             if (!range.lines.empty()) {
                 struct JitCodeDebugEntry {
@@ -449,7 +448,7 @@ public:
         return true;
     }
 
-    void update(const std::vector<BeamAssembler::AsmRange> &ranges) {
+    void update(const std::vector<AsmRange> &ranges) {
         for (const auto &range : ranges) {
             char *start = (char *)range.start, *stop = (char *)range.stop;
             ptrdiff_t size = stop - start;
@@ -491,7 +490,7 @@ public:
                               ERTS_LOCK_FLAGS_CATEGORY_GENERIC);
     }
 
-    void update(const std::vector<BeamAssembler::AsmRange> &ranges) {
+    void update(const std::vector<AsmRange> &ranges) {
         if (modes) {
             erts_mtx_lock(&mutex);
 #    ifdef HAVE_LINUX_PERF_DUMP_SUPPORT
@@ -526,11 +525,10 @@ void beamasm_metadata_late_init() {
 #endif
 }
 
-void beamasm_metadata_update(
-        std::string module_name,
-        ErtsCodePtr base_address,
-        size_t code_size,
-        const std::vector<BeamAssembler::AsmRange> &ranges) {
+void beamasm_metadata_update(std::string module_name,
+                             ErtsCodePtr base_address,
+                             size_t code_size,
+                             const std::vector<AsmRange> &ranges) {
 #ifdef HAVE_LINUX_PERF_SUPPORT
     perf.update(ranges);
 #endif
diff --git a/erts/emulator/beam/jit/beam_jit_types.hpp b/erts/emulator/beam/jit/beam_jit_types.hpp
new file mode 100644
index 0000000000..74edc66496
--- /dev/null
+++ b/erts/emulator/beam/jit/beam_jit_types.hpp
@@ -0,0 +1,150 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2023. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef __BEAM_JIT_TYPES_HPP__
+#define __BEAM_JIT_TYPES_HPP__
+
+/* Type-safe wrapper around the definitions in beam_types.h. We've redefined it
+ * as an `enum class` to force the usage of our helpers, which lets us check
+ * for common usage errors at compile time. */
+enum class BeamTypeId : int {
+    None = BEAM_TYPE_NONE,
+
+    Atom = BEAM_TYPE_ATOM,
+    Bitstring = BEAM_TYPE_BITSTRING,
+    BsMatchState = BEAM_TYPE_BS_MATCHSTATE,
+    Cons = BEAM_TYPE_CONS,
+    Float = BEAM_TYPE_FLOAT,
+    Fun = BEAM_TYPE_FUN,
+    Integer = BEAM_TYPE_INTEGER,
+    Map = BEAM_TYPE_MAP,
+    Nil = BEAM_TYPE_NIL,
+    Pid = BEAM_TYPE_PID,
+    Port = BEAM_TYPE_PORT,
+    Reference = BEAM_TYPE_REFERENCE,
+    Tuple = BEAM_TYPE_TUPLE,
+
+    Any = BEAM_TYPE_ANY,
+
+    Identifier = Pid | Port | Reference,
+    List = Cons | Nil,
+    Number = Float | Integer,
+
+    /** @brief Types that can be boxed, including those that may also be
+     * immediates (e.g. pids, integers). */
+    MaybeBoxed = Bitstring | BsMatchState | Float | Fun | Integer | Map | Pid |
+                 Port | Reference | Tuple,
+    /** @brief Types that can be immediates, including those that may also be
+     * boxed (e.g. pids, integers). */
+    MaybeImmediate = Atom | Integer | Nil | Pid | Port,
+
+    /** @brief Types that are _always_ boxed. */
+    AlwaysBoxed = MaybeBoxed & ~(Cons | MaybeImmediate),
+    /** @brief Types that are _always_ immediates. */
+    AlwaysImmediate = MaybeImmediate & ~(Cons | MaybeBoxed),
+};
+
+template<BeamTypeId... T>
+struct BeamTypeIdUnion;
+
+template<>
+struct BeamTypeIdUnion<> {
+    static constexpr BeamTypeId value() {
+        return BeamTypeId::None;
+    }
+};
+
+template<BeamTypeId T, BeamTypeId... Rest>
+struct BeamTypeIdUnion<T, Rest...> : BeamTypeIdUnion<Rest...> {
+    using integral = std::underlying_type_t<BeamTypeId>;
+    using super = BeamTypeIdUnion<Rest...>;
+
+    /* Overlapping type specifications are redundant at best and a subtle error
+     * at worst. We've had several bugs where `Integer | MaybeBoxed` was used
+     * instead of `Integer | AlwaysBoxed` or similar, and erroneously drew the
+     * conclusion that the value is always an integer when not boxed, when it
+     * could also be a pid or port. */
+    static constexpr bool no_overlap =
+            (static_cast<integral>(super::value()) &
+             static_cast<integral>(T)) == BEAM_TYPE_NONE;
+    static constexpr bool no_boxed_overlap =
+            no_overlap || (super::value() != BeamTypeId::MaybeBoxed &&
+                           T != BeamTypeId::MaybeBoxed);
+    static constexpr bool no_immed_overlap =
+            no_overlap || (super::value() != BeamTypeId::MaybeImmediate &&
+                           T != BeamTypeId::MaybeImmediate);
+
+    static_assert(no_boxed_overlap,
+                  "types must not overlap, did you mean to use "
+                  "BeamTypeId::AlwaysBoxed here?");
+    static_assert(no_immed_overlap,
+                  "types must not overlap, did you mean to use "
+                  "BeamTypeId::AlwaysImmediate here?");
+    static_assert(no_overlap || no_boxed_overlap || no_immed_overlap,
+                  "types must not overlap");
+
+    static constexpr bool is_single_typed() {
+        constexpr auto V = static_cast<integral>(value());
+        return (static_cast<integral>(V) & (static_cast<integral>(V) - 1)) ==
+               BEAM_TYPE_NONE;
+    }
+
+    static constexpr BeamTypeId value() {
+        return static_cast<BeamTypeId>(static_cast<integral>(super::value()) |
+                                       static_cast<integral>(T));
+    }
+};
+
+struct BeamArgType : public BeamType {
+    BeamTypeId type() const {
+        return static_cast<BeamTypeId>(BeamType::type_union);
+    }
+
+    bool hasLowerBound() const {
+        return metadata_flags & BEAM_TYPE_HAS_LOWER_BOUND;
+    }
+
+    bool hasUpperBound() const {
+        return metadata_flags & BEAM_TYPE_HAS_UPPER_BOUND;
+    }
+
+    bool hasUnit() const {
+        return metadata_flags & BEAM_TYPE_HAS_UNIT;
+    }
+
+    auto max() const {
+        ASSERT(hasUpperBound());
+        return BeamType::max;
+    }
+
+    auto min() const {
+        ASSERT(hasLowerBound());
+        return BeamType::min;
+    }
+
+    auto unit() const {
+        ASSERT(hasUnit());
+        return BeamType::size_unit;
+    }
+};
+
+static_assert(std::is_standard_layout<BeamArgType>::value);
+
+#endif
diff --git a/erts/emulator/beam/jit/x86/beam_asm.hpp b/erts/emulator/beam/jit/x86/beam_asm.hpp
index 9a164e1764..f7fd155d31 100644
--- a/erts/emulator/beam/jit/x86/beam_asm.hpp
+++ b/erts/emulator/beam/jit/x86/beam_asm.hpp
@@ -52,18 +52,20 @@ extern "C"
 
 using namespace asmjit;
 
-class BeamAssembler : public ErrorHandler {
-protected:
-    /* Holds code and relocation information. */
-    CodeHolder code;
-
-    /* TODO: Want to change this to x86::Builder in order to be able to patch
-     * the correct I into the code after code generation */
-    x86::Assembler a;
+struct BeamAssembler : public BeamAssemblerCommon {
+    BeamAssembler() : BeamAssemblerCommon(a) {
+        Error err = code.attach(&a);
+        ERTS_ASSERT(!err && "Failed to attach codeHolder");
+    }
 
-    FileLogger logger;
+    BeamAssembler(const std::string &log) : BeamAssembler() {
+        if (erts_jit_asm_dump) {
+            setLogger(log + ".asm");
+        }
+    }
 
-    Section *rodata = nullptr;
+protected:
+    x86::Assembler a;
 
     /* * * * * * * * * */
 
@@ -170,27 +172,6 @@ protected:
 
     enum Distance { dShort, dLong };
 
-public:
-    static bool hasCpuFeature(uint32_t featureId);
-
-    BeamAssembler();
-    BeamAssembler(const std::string &log);
-
-    ~BeamAssembler();
-
-    void *getBaseAddress();
-    size_t getOffset();
-
-protected:
-    void codegen(JitAllocator *allocator,
-                 const void **executable_ptr,
-                 void **writable_ptr);
-
-    void *getCode(Label label);
-    byte *getCode(char *labelName);
-
-    void handleError(Error err, const char *message, BaseEmitter *origin);
-
     constexpr x86::Mem getRuntimeStackRef() const {
         int base = offsetof(ErtsSchedulerRegisters, aux_regs.d.runtime_stack);
 
@@ -986,113 +967,14 @@ protected:
         ASSERT(count == 0);
         (void)count;
     }
-
-public:
-    void embed_rodata(const char *labelName, const char *buff, size_t size);
-    void embed_bss(const char *labelName, size_t size);
-    void embed_zeros(size_t size);
-
-    void setLogger(std::string log);
-    void setLogger(FILE *log);
-
-    void comment(const char *format) {
-        if (logger.file()) {
-            a.commentf("# %s", format);
-        }
-    }
-
-    template<typename... Ts>
-    void comment(const char *format, Ts... args) {
-        if (logger.file()) {
-            char buff[1024];
-            erts_snprintf(buff, sizeof(buff), format, args...);
-            a.commentf("# %s", buff);
-        }
-    }
-
-    struct AsmRange {
-        ErtsCodePtr start;
-        ErtsCodePtr stop;
-        const std::string name;
-
-        struct LineData {
-            ErtsCodePtr start;
-            const std::string file;
-            unsigned line;
-        };
-
-        const std::vector<LineData> lines;
-    };
 };
 
 #include "beam_asm_global.hpp"
 
-class BeamModuleAssembler : public BeamAssembler {
-    typedef unsigned BeamLabel;
-
-    /* Map of label number to asmjit Label */
-    typedef std::unordered_map<BeamLabel, const Label> LabelMap;
-    LabelMap rawLabels;
-
-    struct patch {
-        Label where;
-        int64_t ptr_offs;
-        int64_t val_offs;
-    };
-
-    struct patch_catch {
-        struct patch patch;
-        Label handler;
-    };
-    std::vector<struct patch_catch> catches;
-
-    /* Map of import entry to patch labels and mfa */
-    struct patch_import {
-        std::vector<struct patch> patches;
-        ErtsCodeMFA mfa;
-    };
-    typedef std::unordered_map<unsigned, struct patch_import> ImportMap;
-    ImportMap imports;
-
-    /* Map of fun entry to trampoline labels and patches */
-    struct patch_lambda {
-        std::vector<struct patch> patches;
-        Label trampoline;
-    };
-    typedef std::unordered_map<unsigned, struct patch_lambda> LambdaMap;
-    LambdaMap lambdas;
-
-    /* Map of literals to patch labels */
-    struct patch_literal {
-        std::vector<struct patch> patches;
-    };
-    typedef std::unordered_map<unsigned, struct patch_literal> LiteralMap;
-    LiteralMap literals;
-
-    /* All string patches */
-    std::vector<struct patch> strings;
-
-    /* All functions that have been seen so far */
-    std::vector<BeamLabel> functions;
-
-    /* The BEAM file we've been loaded from, if any. */
-    const BeamFile *beam;
-
+class BeamModuleAssembler : public BeamAssembler,
+                            public BeamModuleAssemblerCommon {
     BeamGlobalAssembler *ga;
 
-    Label code_header;
-
-    /* Used by emit to populate the labelToMFA map */
-    Label current_label;
-
-    /* The module's on_load function, if any. */
-    Label on_load;
-
-    /* The end of the last function. */
-    Label code_end;
-
-    Eterm mod;
-
     /* Save the last PC for an error. */
     size_t last_error_offset = 0;
 
@@ -1249,240 +1131,6 @@ public:
     void patchStrings(char *rw_base, const byte *string);
 
 protected:
-    const auto &getTypeEntry(const ArgSource &arg) const {
-        auto typeIndex =
-                arg.isRegister() ? arg.as<ArgRegister>().typeIndex() : 0;
-        ASSERT(typeIndex < beam->types.count);
-        return beam->types.entries[typeIndex];
-    }
-
-    auto getTypeUnion(const ArgSource &arg) const {
-        if (arg.isRegister()) {
-            return static_cast<BeamTypeId>(getTypeEntry(arg).type_union);
-        }
-
-        Eterm constant =
-                arg.isImmed()
-                        ? arg.as<ArgImmed>().get()
-                        : beamfile_get_literal(beam,
-                                               arg.as<ArgLiteral>().get());
-
-        switch (tag_val_def(constant)) {
-        case ATOM_DEF:
-            return BeamTypeId::Atom;
-        case BINARY_DEF:
-            return BeamTypeId::Bitstring;
-        case FLOAT_DEF:
-            return BeamTypeId::Float;
-        case FUN_DEF:
-            return BeamTypeId::Fun;
-        case BIG_DEF:
-        case SMALL_DEF:
-            return BeamTypeId::Integer;
-        case LIST_DEF:
-            return BeamTypeId::Cons;
-        case MAP_DEF:
-            return BeamTypeId::Map;
-        case NIL_DEF:
-            return BeamTypeId::Nil;
-        case EXTERNAL_PID_DEF:
-        case PID_DEF:
-            return BeamTypeId::Pid;
-        case EXTERNAL_PORT_DEF:
-        case PORT_DEF:
-            return BeamTypeId::Port;
-        case EXTERNAL_REF_DEF:
-        case REF_DEF:
-            return BeamTypeId::Reference;
-        case TUPLE_DEF:
-            return BeamTypeId::Tuple;
-        default:
-            ERTS_ASSERT(!"tag_val_def error");
-        }
-    }
-
-    auto getClampedRange(const ArgSource &arg) const {
-        if (arg.isSmall()) {
-            Sint value = arg.as<ArgSmall>().getSigned();
-            return std::make_pair(value, value);
-        } else {
-            const auto &entry = getTypeEntry(arg);
-
-            if (entry.min <= entry.max) {
-                return std::make_pair(entry.min, entry.max);
-            } else if (IS_SSMALL(entry.min) && !IS_SSMALL(entry.max)) {
-                return std::make_pair(entry.min, MAX_SMALL);
-            } else if (!IS_SSMALL(entry.min) && IS_SSMALL(entry.max)) {
-                return std::make_pair(MIN_SMALL, entry.max);
-            } else {
-                return std::make_pair(MIN_SMALL, MAX_SMALL);
-            }
-        }
-    }
-
-    int getSizeUnit(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        ASSERT(maybe_one_of<BeamTypeId::Bitstring>(arg));
-        return entry.size_unit;
-    }
-
-    bool hasLowerBound(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        return IS_SSMALL(entry.min) && !IS_SSMALL(entry.max);
-    }
-
-    bool hasUpperBound(const ArgSource &arg) const {
-        const auto &entry = getTypeEntry(arg);
-        return !IS_SSMALL(entry.min) && IS_SSMALL(entry.max);
-    }
-
-    bool always_small(const ArgSource &arg) const {
-        if (arg.isSmall()) {
-            return true;
-        } else if (!exact_type<BeamTypeId::Integer>(arg)) {
-            return false;
-        }
-
-        const auto &entry = getTypeEntry(arg);
-        return entry.min <= entry.max;
-    }
-
-    bool always_immediate(const ArgSource &arg) const {
-        return always_one_of<BeamTypeId::AlwaysImmediate>(arg) ||
-               always_small(arg);
-    }
-
-    bool always_same_types(const ArgSource &lhs, const ArgSource &rhs) const {
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto lhs_types = static_cast<integral>(getTypeUnion(lhs));
-        auto rhs_types = static_cast<integral>(getTypeUnion(rhs));
-
-        /* We can only be certain that the types are the same when there's
-         * one possible type. For example, if one is a number and the other
-         * is an integer, they could differ if the former is a float. */
-        if ((lhs_types & (lhs_types - 1)) == 0) {
-            return lhs_types == rhs_types;
-        }
-
-        return false;
-    }
-
-    template<BeamTypeId... Types>
-    bool never_one_of(const ArgSource &arg) const {
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return static_cast<BeamTypeId>(type_union & types) == BeamTypeId::None;
-    }
-
-    template<BeamTypeId... Types>
-    bool maybe_one_of(const ArgSource &arg) const {
-        return !never_one_of<Types...>(arg);
-    }
-
-    template<BeamTypeId... Types>
-    bool always_one_of(const ArgSource &arg) const {
-        /* Providing a single type to this function is not an error per se, but
-         * `exact_type` provides a bit more error checking for that use-case,
-         * so we want to encourage its use. */
-        static_assert(!BeamTypeIdUnion<Types...>::is_single_typed(),
-                      "always_one_of expects a union of several primitive "
-                      "types, use exact_type instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto types = static_cast<integral>(BeamTypeIdUnion<Types...>::value());
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return type_union == (type_union & types);
-    }
-
-    template<BeamTypeId Type>
-    bool exact_type(const ArgSource &arg) const {
-        /* Rejects `exact_type<BeamTypeId::List>(...)` and similar, as it's
-         * almost always an error to exactly match a union of several types.
-         *
-         * On the off chance that you _do_ need to match a union exactly, use
-         * `masked_types<T>(arg) == T` instead. */
-        static_assert(BeamTypeIdUnion<Type>::is_single_typed(),
-                      "exact_type expects exactly one primitive type, use "
-                      "always_one_of instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return type_union == (type_union & static_cast<integral>(Type));
-    }
-
-    template<BeamTypeId Mask>
-    BeamTypeId masked_types(const ArgSource &arg) const {
-        static_assert((Mask != BeamTypeId::AlwaysBoxed &&
-                       Mask != BeamTypeId::AlwaysImmediate),
-                      "using masked_types with AlwaysBoxed or AlwaysImmediate "
-                      "is almost always an error, use exact_type, "
-                      "maybe_one_of, or never_one_of instead");
-        static_assert((Mask == BeamTypeId::MaybeBoxed ||
-                       Mask == BeamTypeId::MaybeImmediate ||
-                       Mask == BeamTypeId::AlwaysBoxed ||
-                       Mask == BeamTypeId::AlwaysImmediate),
-                      "masked_types expects a mask type like MaybeBoxed or "
-                      "MaybeImmediate, use exact_type, maybe_one_of, or"
-                      "never_one_of instead");
-
-        using integral = std::underlying_type_t<BeamTypeId>;
-        auto mask = static_cast<integral>(Mask);
-        auto type_union = static_cast<integral>(getTypeUnion(arg));
-        return static_cast<BeamTypeId>(type_union & mask);
-    }
-
-    bool is_sum_small_if_args_are_small(const ArgSource &LHS,
-                                        const ArgSource &RHS) {
-        Sint min, max;
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        min = min1 + min2;
-        max = max1 + max2;
-        return IS_SSMALL(min) && IS_SSMALL(max);
-    }
-
-    bool is_diff_small_if_args_are_small(const ArgSource &LHS,
-                                         const ArgSource &RHS) {
-        Sint min, max;
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        min = min1 - max2;
-        max = max1 - min2;
-        return IS_SSMALL(min) && IS_SSMALL(max);
-    }
-
-    bool is_product_small_if_args_are_small(const ArgSource &LHS,
-                                            const ArgSource &RHS) {
-        auto [min1, max1] = getClampedRange(LHS);
-        auto [min2, max2] = getClampedRange(RHS);
-        auto mag1 = std::max(std::abs(min1), std::abs(max1));
-        auto mag2 = std::max(std::abs(min2), std::abs(max2));
-
-        /*
-         * mag1 * mag2 <= MAX_SMALL
-         * mag1 <= MAX_SMALL / mag2   (when mag2 != 0)
-         */
-        ERTS_CT_ASSERT(MAX_SMALL < -MIN_SMALL);
-        return mag2 == 0 || mag1 <= MAX_SMALL / mag2;
-    }
-
-    bool is_bsl_small(const ArgSource &LHS, const ArgSource &RHS) {
-        if (!(always_small(LHS) && always_small(RHS))) {
-            return false;
-        } else {
-            auto [min1, max1] = getClampedRange(LHS);
-            auto [min2, max2] = getClampedRange(RHS);
-
-            if (min1 < 0 || max1 == 0 || min2 < 0) {
-                return false;
-            }
-
-            return max2 < Support::clz(max1) - _TAG_IMMED1_SIZE;
-        }
-    }
-
-    /* Helpers */
     void emit_gc_test(const ArgWord &Stack,
                       const ArgWord &Heap,
                       const ArgWord &Live);
@@ -1668,7 +1316,7 @@ protected:
 
     void make_move_patch(x86::Gp to,
                          std::vector<struct patch> &patches,
-                         int64_t offset = 0) {
+                         size_t offset = 0) {
         const int MOV_IMM64_PAYLOAD_OFFSET = 2;
         Label lbl = a.newLabel();
 
@@ -1852,10 +1500,9 @@ protected:
     }
 };
 
-void beamasm_metadata_update(
-        std::string module_name,
-        ErtsCodePtr base_address,
-        size_t code_size,
-        const std::vector<BeamAssembler::AsmRange> &ranges);
+void beamasm_metadata_update(std::string module_name,
+                             ErtsCodePtr base_address,
+                             size_t code_size,
+                             const std::vector<AsmRange> &ranges);
 void beamasm_metadata_early_init();
 void beamasm_metadata_late_init();
diff --git a/erts/emulator/beam/jit/x86/beam_asm_module.cpp b/erts/emulator/beam/jit/x86/beam_asm_module.cpp
index f50398367e..bc8a11e15e 100644
--- a/erts/emulator/beam/jit/x86/beam_asm_module.cpp
+++ b/erts/emulator/beam/jit/x86/beam_asm_module.cpp
@@ -403,79 +403,6 @@ void BeamModuleAssembler::emit_call_error_handler() {
     emit_nyi("call_error_handler should never be called");
 }
 
-unsigned BeamModuleAssembler::patchCatches(char *rw_base) {
-    unsigned catch_no = BEAM_CATCHES_NIL;
-
-    for (const auto &c : catches) {
-        const auto &patch = c.patch;
-        ErtsCodePtr handler;
-
-        handler = (ErtsCodePtr)getCode(c.handler);
-        catch_no = beam_catches_cons(handler, catch_no, nullptr);
-
-        /* Patch the `mov` instruction with the catch tag */
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (unsigned *)&rw_base[offset + patch.ptr_offs];
-
-        ASSERT(0x7fffffff == *where);
-        Eterm catch_term = make_catch(catch_no);
-
-        /* With the current tag scheme, more than 33 million
-         * catches can exist at once. */
-        ERTS_ASSERT(catch_term >> 31 == 0);
-        *where = (unsigned)catch_term;
-    }
-
-    return catch_no;
-}
-
-void BeamModuleAssembler::patchImport(char *rw_base,
-                                      unsigned index,
-                                      const Export *import) {
-    for (const auto &patch : imports[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = reinterpret_cast<Eterm>(import) + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchLambda(char *rw_base,
-                                      unsigned index,
-                                      const ErlFunEntry *fe) {
-    for (const auto &patch : lambdas[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = reinterpret_cast<Eterm>(fe) + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchLiteral(char *rw_base,
-                                       unsigned index,
-                                       Eterm lit) {
-    for (const auto &patch : literals[index].patches) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (Eterm *)&rw_base[offset + patch.ptr_offs];
-
-        ASSERT(LLONG_MAX == *where);
-        *where = lit + patch.val_offs;
-    }
-}
-
-void BeamModuleAssembler::patchStrings(char *rw_base,
-                                       const byte *string_table) {
-    for (const auto &patch : strings) {
-        auto offset = code.labelOffsetFromBase(patch.where);
-        auto where = (const byte **)&rw_base[offset + 2];
-
-        ASSERT(LLONG_MAX == (Eterm)*where);
-        *where = string_table + patch.val_offs;
-    }
-}
-
 const Label &BeamModuleAssembler::resolve_fragment(void (*fragment)()) {
     auto it = _dispatchTable.find(fragment);
 
diff --git a/erts/emulator/beam/jit/x86/instr_bs.cpp b/erts/emulator/beam/jit/x86/instr_bs.cpp
index 2293ec96fb..36e95df57c 100644
--- a/erts/emulator/beam/jit/x86/instr_bs.cpp
+++ b/erts/emulator/beam/jit/x86/instr_bs.cpp
@@ -1366,7 +1366,7 @@ void BeamModuleAssembler::emit_bs_get_utf8(const ArgRegister &Ctx,
 
     a.bind(multi_byte);
 
-    if (BeamAssembler::hasCpuFeature(CpuFeatures::X86::kBMI2)) {
+    if (hasCpuFeature(CpuFeatures::X86::kBMI2)) {
         /* This CPU supports the PEXT and SHRX instructions. */
         safe_fragment_call(ga->get_bs_get_utf8_shared());
         a.short_().jmp(check);
@@ -1375,7 +1375,7 @@ void BeamModuleAssembler::emit_bs_get_utf8(const ArgRegister &Ctx,
     /* Take care of unaligned binaries and binaries with less than 32
      * bits left. */
     a.bind(fallback);
-    if (BeamAssembler::hasCpuFeature(CpuFeatures::X86::kBMI2)) {
+    if (hasCpuFeature(CpuFeatures::X86::kBMI2)) {
         /* This CPU supports the PEXT and SHRX instructions. */
         safe_fragment_call(ga->get_bs_get_utf8_short_shared());
     } else {
diff --git a/erts/emulator/beam/jit/x86/instr_common.cpp b/erts/emulator/beam/jit/x86/instr_common.cpp
index 5f96807e51..4afa8268e7 100644
--- a/erts/emulator/beam/jit/x86/instr_common.cpp
+++ b/erts/emulator/beam/jit/x86/instr_common.cpp
@@ -2301,8 +2301,7 @@ void BeamModuleAssembler::emit_catch(const ArgYRegister &CatchTag,
      * with the tagged catch
      */
     a.bind(patch_addr);
-    a.mov(RETd, imm(0x7fffffff));
-
+    a.mov(RETd, imm(INT_MAX));
     mov_arg(CatchTag, RET);
 
     /* Offset = 1 for `mov` payload */