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| author | Craig Topper <craig.topper@gmail.com> | 2012-05-01 06:34:01 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2012-05-01 06:34:01 +0000 |
| commit | ff72e74d34197cd8775ed32c6e06054b936a1cad (patch) | |
| tree | f6a600809e7b3b4b7f65fc1876113cae9bbc6255 /lib/Target/X86 | |
| parent | f8b30f9d16910eb6d7d18d17fd137a4ddc60ef66 (diff) | |
| download | external_llvm-ff72e74d34197cd8775ed32c6e06054b936a1cad.zip external_llvm-ff72e74d34197cd8775ed32c6e06054b936a1cad.tar.gz external_llvm-ff72e74d34197cd8775ed32c6e06054b936a1cad.tar.bz2 | |
Attempt to handle MRMInitReg in emitVEXOpcodePrefix. Hopefully fixes PR12711.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155896 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86')
| -rw-r--r-- | lib/Target/X86/X86CodeEmitter.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/Target/X86/X86CodeEmitter.cpp b/lib/Target/X86/X86CodeEmitter.cpp index 79404da..09524fe 100644 --- a/lib/Target/X86/X86CodeEmitter.cpp +++ b/lib/Target/X86/X86CodeEmitter.cpp @@ -939,7 +939,18 @@ void Emitter<CodeEmitter>::emitVEXOpcodePrefix(uint64_t TSFlags, // Classify VEX_B, VEX_4V, VEX_R, VEX_X unsigned CurOp = 0; switch (TSFlags & X86II::FormMask) { - case X86II::MRMInitReg: llvm_unreachable("FIXME: Remove this!"); + case X86II::MRMInitReg: + // Duplicate register. + if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg())) + VEX_R = 0x0; + + if (HasVEX_4V) + VEX_4V = getVEXRegisterEncoding(MI, CurOp); + if (X86II::isX86_64ExtendedReg(MI.getOperand(CurOp).getReg())) + VEX_B = 0x0; + if (HasVEX_4VOp3) + VEX_4V = getVEXRegisterEncoding(MI, CurOp); + break; case X86II::MRMDestMem: { // MRMDestMem instructions forms: // MemAddr, src1(ModR/M) |