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| author | willschm <willschm@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-09-19 13:42:48 +0000 |
|---|---|---|
| committer | willschm <willschm@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-09-19 13:42:48 +0000 |
| commit | 86b743d9dab6dae9392b0c1709ce813f0ed7067c (patch) | |
| tree | 2231680c5bbeace8f32ac41319b46a171a02bb17 /gcc/config/rs6000/rs6000.c | |
| parent | a60cb14db1d5368f4756c936c039a73116344097 (diff) | |
| download | gcc-86b743d9dab6dae9392b0c1709ce813f0ed7067c.tar.gz | |
[gcc]
2017-09-19 Will Schmidt <will_schmidt@vnet.ibm.com>
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add handling
for early folding of vector loads (ALTIVEC_BUILTIN_LVX_*).
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
Remove obsoleted code for handling ALTIVEC_BUILTIN_VEC_LD.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@252975 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index bc1c4db5db4..1978634f02e 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -16546,6 +16546,48 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi) update_call_from_tree (gsi, res); return true; } + /* Vector loads. */ + case ALTIVEC_BUILTIN_LVX_V16QI: + case ALTIVEC_BUILTIN_LVX_V8HI: + case ALTIVEC_BUILTIN_LVX_V4SI: + case ALTIVEC_BUILTIN_LVX_V4SF: + case ALTIVEC_BUILTIN_LVX_V2DI: + case ALTIVEC_BUILTIN_LVX_V2DF: + { + arg0 = gimple_call_arg (stmt, 0); // offset + arg1 = gimple_call_arg (stmt, 1); // address + /* Do not fold for -maltivec=be on LE targets. */ + if (VECTOR_ELT_ORDER_BIG && !BYTES_BIG_ENDIAN) + return false; + lhs = gimple_call_lhs (stmt); + location_t loc = gimple_location (stmt); + /* Since arg1 may be cast to a different type, just use ptr_type_node + here instead of trying to enforce TBAA on pointer types. */ + tree arg1_type = ptr_type_node; + tree lhs_type = TREE_TYPE (lhs); + /* POINTER_PLUS_EXPR wants the offset to be of type 'sizetype'. Create + the tree using the value from arg0. The resulting type will match + the type of arg1. */ + gimple_seq stmts = NULL; + tree temp_offset = gimple_convert (&stmts, loc, sizetype, arg0); + tree temp_addr = gimple_build (&stmts, loc, POINTER_PLUS_EXPR, + arg1_type, arg1, temp_offset); + /* Mask off any lower bits from the address. */ + tree aligned_addr = gimple_build (&stmts, loc, BIT_AND_EXPR, + arg1_type, temp_addr, + build_int_cst (arg1_type, -16)); + gsi_insert_seq_before (gsi, stmts, GSI_SAME_STMT); + /* Use the build2 helper to set up the mem_ref. The MEM_REF could also + take an offset, but since we've already incorporated the offset + above, here we just pass in a zero. */ + gimple *g; + g = gimple_build_assign (lhs, build2 (MEM_REF, lhs_type, aligned_addr, + build_int_cst (arg1_type, 0))); + gimple_set_location (g, loc); + gsi_replace (gsi, g, true); + return true; + } + default: if (TARGET_DEBUG_BUILTIN) fprintf (stderr, "gimple builtin intrinsic not matched:%d %s %s\n", |