diff options
Diffstat (limited to 'llvm/lib/Target/X86/AsmParser')
| -rw-r--r-- | llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp index fa079242e75..30411a232ef 100644 --- a/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp +++ b/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp @@ -2830,7 +2830,69 @@ bool X86AsmParser::ParseInstruction(ParseInstructionInfo &Info, StringRef Name, } bool X86AsmParser::processInstruction(MCInst &Inst, const OperandVector &Ops) { - return false; + const MCRegisterInfo *MRI = getContext().getRegisterInfo(); + + switch (Inst.getOpcode()) { + default: return false; + case X86::VMOVZPQILo2PQIrr: + case X86::VMOVAPDrr: + case X86::VMOVAPDYrr: + case X86::VMOVAPSrr: + case X86::VMOVAPSYrr: + case X86::VMOVDQArr: + case X86::VMOVDQAYrr: + case X86::VMOVDQUrr: + case X86::VMOVDQUYrr: + case X86::VMOVUPDrr: + case X86::VMOVUPDYrr: + case X86::VMOVUPSrr: + case X86::VMOVUPSYrr: { + // We can get a smaller encoding by using VEX.R instead of VEX.B if one of + // the registers is extended, but other isn't. + if (ForcedVEXEncoding == VEXEncoding_VEX3 || + MRI->getEncodingValue(Inst.getOperand(0).getReg()) >= 8 || + MRI->getEncodingValue(Inst.getOperand(1).getReg()) < 8) + return false; + + unsigned NewOpc; + switch (Inst.getOpcode()) { + default: llvm_unreachable("Invalid opcode"); + case X86::VMOVZPQILo2PQIrr: NewOpc = X86::VMOVPQI2QIrr; break; + case X86::VMOVAPDrr: NewOpc = X86::VMOVAPDrr_REV; break; + case X86::VMOVAPDYrr: NewOpc = X86::VMOVAPDYrr_REV; break; + case X86::VMOVAPSrr: NewOpc = X86::VMOVAPSrr_REV; break; + case X86::VMOVAPSYrr: NewOpc = X86::VMOVAPSYrr_REV; break; + case X86::VMOVDQArr: NewOpc = X86::VMOVDQArr_REV; break; + case X86::VMOVDQAYrr: NewOpc = X86::VMOVDQAYrr_REV; break; + case X86::VMOVDQUrr: NewOpc = X86::VMOVDQUrr_REV; break; + case X86::VMOVDQUYrr: NewOpc = X86::VMOVDQUYrr_REV; break; + case X86::VMOVUPDrr: NewOpc = X86::VMOVUPDrr_REV; break; + case X86::VMOVUPDYrr: NewOpc = X86::VMOVUPDYrr_REV; break; + case X86::VMOVUPSrr: NewOpc = X86::VMOVUPSrr_REV; break; + case X86::VMOVUPSYrr: NewOpc = X86::VMOVUPSYrr_REV; break; + } + Inst.setOpcode(NewOpc); + return true; + } + case X86::VMOVSDrr: + case X86::VMOVSSrr: { + // We can get a smaller encoding by using VEX.R instead of VEX.B if one of + // the registers is extended, but other isn't. + if (ForcedVEXEncoding == VEXEncoding_VEX3 || + MRI->getEncodingValue(Inst.getOperand(0).getReg()) >= 8 || + MRI->getEncodingValue(Inst.getOperand(2).getReg()) < 8) + return false; + + unsigned NewOpc; + switch (Inst.getOpcode()) { + default: llvm_unreachable("Invalid opcode"); + case X86::VMOVSDrr: NewOpc = X86::VMOVSDrr_REV; break; + case X86::VMOVSSrr: NewOpc = X86::VMOVSSrr_REV; break; + } + Inst.setOpcode(NewOpc); + return true; + } + } } bool X86AsmParser::validateInstruction(MCInst &Inst, const OperandVector &Ops) { |
