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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-08-26 21:21:21 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-08-26 21:21:21 +0000 |
| commit | 43f51aeca8367ea35adad963c00bd2bc5b8d1391 (patch) | |
| tree | cb558e0aaacbddf5f406784aafe4ff13f10b5deb /lib/Target/X86/X86InstrCompiler.td | |
| parent | 51fb91c04c920703fbd4a67ac3f85c0971b2c5a5 (diff) | |
Add support for generating CMPXCHG16B on x86-64 for the cmpxchg IR instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138660 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrCompiler.td')
| -rw-r--r-- | lib/Target/X86/X86InstrCompiler.td | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td index 2801c9bb3f..829ea27920 100644 --- a/lib/Target/X86/X86InstrCompiler.td +++ b/lib/Target/X86/X86InstrCompiler.td @@ -665,12 +665,20 @@ def LOCK_DEC64m : RI<0xFF, MRM1m, (outs), (ins i64mem:$dst), // Atomic compare and swap. let Defs = [EAX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX], - isCodeGenOnly = 1 in { + isCodeGenOnly = 1 in def LCMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i64mem:$ptr), "lock\n\t" "cmpxchg8b\t$ptr", [(X86cas8 addr:$ptr)]>, TB, LOCK; -} + +let Defs = [RAX, RDX, EFLAGS], Uses = [RAX, RBX, RCX, RDX], + isCodeGenOnly = 1 in +def LCMPXCHG16B : RI<0xC7, MRM1m, (outs), (ins i128mem:$ptr), + "lock\n\t" + "cmpxchg16b\t$ptr", + [(X86cas16 addr:$ptr)]>, TB, LOCK, + Requires<[HasCmpxchg16b]>; + let Defs = [AL, EFLAGS], Uses = [AL], isCodeGenOnly = 1 in { def LCMPXCHG8 : I<0xB0, MRMDestMem, (outs), (ins i8mem:$ptr, GR8:$swap), "lock\n\t" |