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| author | Richard Henderson <richard.henderson@linaro.org> | 2025-08-04 21:47:57 +1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2025-08-11 23:25:09 +0000 |
| commit | 5a2d86939c735ca2e9aba68c534bffe763a8f7a6 (patch) | |
| tree | 02ad28e7427645f9c9f7a793afccd9a4981cdf25 | |
| parent | 21d94bf16f124e22fc7ad3c2e4083374eba03c67 (diff) | |
| download | gcc-5a2d86939c735ca2e9aba68c534bffe763a8f7a6.zip gcc-5a2d86939c735ca2e9aba68c534bffe763a8f7a6.tar.gz gcc-5a2d86939c735ca2e9aba68c534bffe763a8f7a6.tar.bz2 | |
aarch64: Disable TARGET_CMPBR with aarch64_track_speculation
With -mtrack-speculation, CC_REGNUM must be used at every
conditional branch.
gcc:
* config/aarch64/aarch64.h (TARGET_CMPBR): False when
aarch64_track_speculation is true.
| -rw-r--r-- | gcc/config/aarch64/aarch64.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index 096c853..2b3610c 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -410,8 +410,9 @@ constexpr auto AARCH64_FL_DEFAULT_ISA_MODE ATTRIBUTE_UNUSED /* CSSC instructions are enabled through +cssc. */ #define TARGET_CSSC AARCH64_HAVE_ISA (CSSC) -/* CB<cc> instructions are enabled through +cmpbr. */ -#define TARGET_CMPBR AARCH64_HAVE_ISA (CMPBR) +/* CB<cc> instructions are enabled through +cmpbr, + but are incompatible with -mtrack-speculation. */ +#define TARGET_CMPBR (AARCH64_HAVE_ISA (CMPBR) && !aarch64_track_speculation) /* Make sure this is always defined so we don't have to check for ifdefs but rather use normal ifs. */ |