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| author | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-11-30 20:11:42 +0000 |
|---|---|---|
| committer | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-11-30 20:11:42 +0000 |
| commit | aef1dfc690adc6478efcd059bdbb65d0195082b8 (patch) | |
| tree | 93e7e991529cc394ef6593a962e1217705fd88e1 /llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp | |
| parent | d78d65c2a4eed16b273c214d24f5d5f55ce31d52 (diff) | |
| download | bcm5719-llvm-aef1dfc690adc6478efcd059bdbb65d0195082b8.tar.gz bcm5719-llvm-aef1dfc690adc6478efcd059bdbb65d0195082b8.zip | |
[aarch64][globalisel] Legalize G_ATOMIC_CMPXCHG_WITH_SUCCESS and G_ATOMICRMW_*
G_ATOMICRMW_* is generally legal on AArch64. The exception is G_ATOMICRMW_NAND.
G_ATOMIC_CMPXCHG_WITH_SUCCESS needs to be lowered to G_ATOMIC_CMPXCHG with an
external comparison.
Note that IRTranslator doesn't generate these instructions yet.
llvm-svn: 319466
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp index 54d1109a08f..c7a42629c96 100644 --- a/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64LegalizerInfo.cpp @@ -351,8 +351,10 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST) { setAction({G_VAARG, Ty}, Custom); if (ST.hasLSE()) { - for (auto Ty : {s8, s16, s32, s64}) + for (auto Ty : {s8, s16, s32, s64}) { + setAction({G_ATOMIC_CMPXCHG_WITH_SUCCESS, Ty}, Lower); setAction({G_ATOMIC_CMPXCHG, Ty}, Legal); + } setAction({G_ATOMIC_CMPXCHG, 1, p0}, Legal); for (unsigned Op : |
