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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 | d32ebcc36b7f7d49e271b0789be5459ce3836432 (patch) | |
| tree | 1ec82842490b3343d5f92431a8a45e835004cbde /llvm/lib/Target/X86/X86CodeEmitter.cpp | |
| parent | 48221c5c5488779197e4746fd2ab7e5cd045e687 (diff) | |
| download | bcm5719-llvm-d32ebcc36b7f7d49e271b0789be5459ce3836432.tar.gz bcm5719-llvm-d32ebcc36b7f7d49e271b0789be5459ce3836432.zip | |
Attempt to handle MRMInitReg in emitVEXOpcodePrefix. Hopefully fixes PR12711.
llvm-svn: 155896
Diffstat (limited to 'llvm/lib/Target/X86/X86CodeEmitter.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86CodeEmitter.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86CodeEmitter.cpp b/llvm/lib/Target/X86/X86CodeEmitter.cpp index 79404da9944..09524fe2e47 100644 --- a/llvm/lib/Target/X86/X86CodeEmitter.cpp +++ b/llvm/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) |
