2016-07-07 Thomas Preud'homme <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.h (TARGET_USE_MOVT): Check MOVT/MOVW availability
    with TARGET_HAVE_MOVT.
    (TARGET_HAVE_MOVT): Define.
    * config/arm/arm.c (const_ok_for_op): Check MOVT/MOVW
    availability with TARGET_HAVE_MOVT.
    * config/arm/arm.md (arm_movt): Use TARGET_HAVE_MOVT to check MOVT
    availability.
    (addsi splitter): Use TARGET_THUMB && TARGET_HAVE_MOVT rather than
    TARGET_THUMB2.
    (symbol_refs movsi splitter): Remove TARGET_32BIT check.
    (arm_movtas_ze): Use TARGET_HAVE_MOVT to check MOVT availability.
    * config/arm/constraints.md (define_constraint "j"): Use
    TARGET_HAVE_MOVT to check MOVT availability.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@238083 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 11 insertions, 8 deletions

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 3a9b9cb7bb8..2394a173f05 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -3947,7 +3947,7 @@ const_ok_for_op (HOST_WIDE_INT i, enum rtx_code code)
     {
     case SET:
       /* See if we can use movw.  */
-      if (arm_arch_thumb2 && (i & 0xffff0000) == 0)
+      if (TARGET_HAVE_MOVT && (i & 0xffff0000) == 0)
 	return 1;
       else
 	/* Otherwise, try mvn.  */
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index 07353629c6b..c9aaa609087 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -232,7 +232,7 @@ extern void (*arm_lang_output_object_attributes_hook)(void);
 
 /* Should MOVW/MOVT be used in preference to a constant pool.  */
 #define TARGET_USE_MOVT \
-  (arm_arch_thumb2 \
+  (TARGET_HAVE_MOVT \
    && (arm_disable_literal_pool \
        || (!optimize_size && !current_tune->prefer_constant_pool)))
 
@@ -263,6 +263,9 @@ extern void (*arm_lang_output_object_attributes_hook)(void);
 /* Nonzero if this chip supports load-acquire and store-release.  */
 #define TARGET_HAVE_LDACQ	(TARGET_ARM_ARCH >= 8 && arm_arch_notm)
 
+/* Nonzero if this chip provides the MOVW and MOVW instructions.  */
+#define TARGET_HAVE_MOVT	(arm_arch_thumb2)
+
 /* Nonzero if integer division instructions supported.  */
 #define TARGET_IDIV	((TARGET_ARM && arm_arch_arm_hwdiv)	\
 			 || (TARGET_THUMB2 && arm_arch_thumb_hwdiv))
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 16498316bee..3cd76f935a4 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -5702,7 +5702,7 @@
   [(set (match_operand:SI 0 "nonimmediate_operand" "=r")
 	(lo_sum:SI (match_operand:SI 1 "nonimmediate_operand" "0")
 		   (match_operand:SI 2 "general_operand"      "i")))]
-  "arm_arch_thumb2 && arm_valid_symbolic_address_p (operands[2])"
+  "TARGET_HAVE_MOVT && arm_valid_symbolic_address_p (operands[2])"
   "movt%?\t%0, #:upper16:%c2"
   [(set_attr "predicable" "yes")
    (set_attr "predicable_short_it" "no")
@@ -5762,7 +5762,8 @@
   [(set (match_operand:SI 0 "arm_general_register_operand" "")
 	(const:SI (plus:SI (match_operand:SI 1 "general_operand" "")
 			   (match_operand:SI 2 "const_int_operand" ""))))]
-  "TARGET_THUMB2
+  "TARGET_THUMB
+   && TARGET_HAVE_MOVT
    && arm_disable_literal_pool
    && reload_completed
    && GET_CODE (operands[1]) == SYMBOL_REF"
@@ -5793,8 +5794,7 @@
 (define_split
   [(set (match_operand:SI 0 "arm_general_register_operand" "")
        (match_operand:SI 1 "general_operand" ""))]
-  "TARGET_32BIT
-   && TARGET_USE_MOVT && GET_CODE (operands[1]) == SYMBOL_REF
+  "TARGET_USE_MOVT && GET_CODE (operands[1]) == SYMBOL_REF
    && !flag_pic && !target_word_relocations
    && !arm_tls_referenced_p (operands[1])"
   [(clobber (const_int 0))]
@@ -10975,7 +10975,7 @@
                    (const_int 16)
                    (const_int 16))
         (match_operand:SI 1 "const_int_operand" ""))]
-  "arm_arch_thumb2"
+  "TARGET_HAVE_MOVT"
   "movt%?\t%0, %L1"
  [(set_attr "predicable" "yes")
   (set_attr "predicable_short_it" "no")
diff --git a/gcc/config/arm/constraints.md b/gcc/config/arm/constraints.md
index 3b71c4a5270..4ece5f013c9 100644
--- a/gcc/config/arm/constraints.md
+++ b/gcc/config/arm/constraints.md
@@ -66,7 +66,7 @@
 
 (define_constraint "j"
  "A constant suitable for a MOVW instruction. (ARM/Thumb-2)"
- (and (match_test "TARGET_32BIT && arm_arch_thumb2")
+ (and (match_test "TARGET_HAVE_MOVT")
       (ior (and (match_code "high")
 		(match_test "arm_valid_symbolic_address_p (XEXP (op, 0))"))
 	   (and (match_code "const_int")