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| author | Craig Topper <craig.topper@gmail.com> | 2013-03-18 03:34:55 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2013-03-18 03:34:55 +0000 |
| commit | 8ee1c1cfaff9eece05ecabfa267cd68c98af5dd2 (patch) | |
| tree | 64875316a79aa813e4b02e967c87fd75a19df894 | |
| parent | 4bef961baf9660f1ac5a5b80378631cd942636b2 (diff) | |
Post process ADC/SBB and use a shorter encoding if they use a sign extended immediate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177243 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/AsmParser/X86AsmParser.cpp | 6 | ||||
| -rw-r--r-- | test/MC/X86/intel-syntax-encoding.s | 14 |
2 files changed, 20 insertions, 0 deletions
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp index 5f6c110cb8..4ed5534a62 100644 --- a/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -1801,6 +1801,12 @@ processInstruction(MCInst &Inst, case X86::SUB16i16: return convert16i16to16ri8(Inst, X86::SUB16ri8); case X86::SUB32i32: return convert32i32to32ri8(Inst, X86::SUB32ri8); case X86::SUB64i32: return convert64i32to64ri8(Inst, X86::SUB64ri8); + case X86::ADC16i16: return convert16i16to16ri8(Inst, X86::ADC16ri8); + case X86::ADC32i32: return convert32i32to32ri8(Inst, X86::ADC32ri8); + case X86::ADC64i32: return convert64i32to64ri8(Inst, X86::ADC64ri8); + case X86::SBB16i16: return convert16i16to16ri8(Inst, X86::SBB16ri8); + case X86::SBB32i32: return convert32i32to32ri8(Inst, X86::SBB32ri8); + case X86::SBB64i32: return convert64i32to64ri8(Inst, X86::SBB64ri8); } } diff --git a/test/MC/X86/intel-syntax-encoding.s b/test/MC/X86/intel-syntax-encoding.s index 1350364836..9806ac3802 100644 --- a/test/MC/X86/intel-syntax-encoding.s +++ b/test/MC/X86/intel-syntax-encoding.s @@ -31,6 +31,20 @@ // CHECK: encoding: [0x48,0x83,0xc0,0xf4] add rax, -12 +// CHECK: encoding: [0x66,0x83,0xd0,0xf4] + adc ax, -12 +// CHECK: encoding: [0x83,0xd0,0xf4] + adc eax, -12 +// CHECK: encoding: [0x48,0x83,0xd0,0xf4] + adc rax, -12 + +// CHECK: encoding: [0x66,0x83,0xd8,0xf4] + sbb ax, -12 +// CHECK: encoding: [0x83,0xd8,0xf4] + sbb eax, -12 +// CHECK: encoding: [0x48,0x83,0xd8,0xf4] + sbb rax, -12 + // CHECK: encoding: [0x66,0x83,0xf8,0xf4] cmp ax, -12 // CHECK: encoding: [0x83,0xf8,0xf4] |