diff options
| author | Haochen Gui <guihaoc@gcc.gnu.org> | 2023-12-27 10:30:56 +0800 |
|---|---|---|
| committer | Haochen Gui <guihaoc@gcc.gnu.org> | 2023-12-27 10:35:14 +0800 |
| commit | daea7777cee46549b8a43624f32ec66b4e783f3f (patch) | |
| tree | 087b05915e5e9a05c83e1ce64ab7e3fcdc17621d /gcc | |
| parent | 78bd9e25601a2b7162ad71f714861a05cf994488 (diff) | |
| download | gcc-daea7777cee46549b8a43624f32ec66b4e783f3f.zip gcc-daea7777cee46549b8a43624f32ec66b4e783f3f.tar.gz gcc-daea7777cee46549b8a43624f32ec66b4e783f3f.tar.bz2 | |
rs6000: Call library for block memory compare when optimizing for size
gcc/
* config/rs6000/rs6000.md (cmpmemsi): Fail when optimizing for size.
gcc/testsuite/
* gcc.target/powerpc/block-cmp-3.c: New.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/powerpc/block-cmp-3.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 5812662..37e427b 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -10146,6 +10146,9 @@ (use (match_operand:SI 4))])] "TARGET_POPCNTD" { + if (optimize_insn_for_size_p ()) + FAIL; + if (expand_block_compare (operands)) DONE; else diff --git a/gcc/testsuite/gcc.target/powerpc/block-cmp-3.c b/gcc/testsuite/gcc.target/powerpc/block-cmp-3.c new file mode 100644 index 0000000..c7e853a --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/block-cmp-3.c @@ -0,0 +1,8 @@ +/* { dg-do compile } */ +/* { dg-options "-Os" } */ +/* { dg-final { scan-assembler-times {\mb[l]? memcmp\M} 1 } } */ + +int foo (const char* s1, const char* s2) +{ + return __builtin_memcmp (s1, s2, 4); +} |