diff options
| author | Daniel Dunbar <daniel@zuster.org> | 2010-03-09 22:50:40 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-03-09 22:50:40 +0000 |
| commit | 1e8ee89c213704c398d8a7ea2567a30b0f75eb5f (patch) | |
| tree | b8dd939e48fbacbbf74abd82762fba22d6f5439d | |
| parent | 315b1bb7465d1f5a96a1136cfa37ab89cb9bc9c6 (diff) | |
MC/X86: Rename alternate spellings of CMP{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98097 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 18 | ||||
| -rw-r--r-- | test/MC/AsmParser/X86/x86_32-new-encoder.s | 3 |
2 files changed, 15 insertions, 6 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index 4589b59e50..4b43e658e7 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -3453,12 +3453,18 @@ def CMP32rm : I<0x3B, MRMSrcMem, "cmp{l}\t{$src2, $src1|$src1, $src2}", [(X86cmp GR32:$src1, (loadi32 addr:$src2)), (implicit EFLAGS)]>; -def CMP8mrmrr : I<0x3A, MRMSrcReg, (outs), (ins GR8:$src1, GR8:$src2), - "cmp{b}\t{$src2, $src1|$src1, $src2}", []>; -def CMP16mrmrr : I<0x3B, MRMSrcReg, (outs), (ins GR16:$src1, GR16:$src2), - "cmp{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize; -def CMP32mrmrr : I<0x3B, MRMSrcReg, (outs), (ins GR32:$src1, GR32:$src2), - "cmp{l}\t{$src2, $src1|$src1, $src2}", []>; + +// These are alternate spellings for use by the disassembler, we mark them as +// code gen only to ensure they aren't matched by the assembler. +let isCodeGenOnly = 1 in { + def CMP8rr_alt : I<0x3A, MRMSrcReg, (outs), (ins GR8:$src1, GR8:$src2), + "cmp{b}\t{$src2, $src1|$src1, $src2}", []>; + def CMP16rr_alt : I<0x3B, MRMSrcReg, (outs), (ins GR16:$src1, GR16:$src2), + "cmp{w}\t{$src2, $src1|$src1, $src2}", []>, OpSize; + def CMP32rr_alt : I<0x3B, MRMSrcReg, (outs), (ins GR32:$src1, GR32:$src2), + "cmp{l}\t{$src2, $src1|$src1, $src2}", []>; +} + def CMP8ri : Ii8<0x80, MRM7r, (outs), (ins GR8:$src1, i8imm:$src2), "cmp{b}\t{$src2, $src1|$src1, $src2}", diff --git a/test/MC/AsmParser/X86/x86_32-new-encoder.s b/test/MC/AsmParser/X86/x86_32-new-encoder.s index ffda3b2d14..63ae9d1bbd 100644 --- a/test/MC/AsmParser/X86/x86_32-new-encoder.s +++ b/test/MC/AsmParser/X86/x86_32-new-encoder.s @@ -41,3 +41,6 @@ rdtscp // CHECK: testb %bl, %cl # encoding: [0x84,0xcb] testb %bl, %cl + +// CHECK: cmpl %eax, %ebx # encoding: [0x39,0xc3] + cmpl %eax, %ebx |