diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 47388eae48..c566b48aae 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -207,6 +207,24 @@ MachineInstr *X86InstrInfo::convertToThreeAddress(MachineInstr *MI) const { /// MachineInstr *X86InstrInfo::commuteInstruction(MachineInstr *MI) const { switch (MI->getOpcode()) { + case X86::SHUFPSrri: { // A = SHUFPSrri B,C, M -> A = SHUFPSrri C,B, rotl(M,4) + unsigned A = MI->getOperand(0).getReg(); + unsigned B = MI->getOperand(1).getReg(); + unsigned C = MI->getOperand(2).getReg(); + unsigned M = MI->getOperand(3).getImmedValue(); + if (B == C) return 0; + return BuildMI(X86::SHUFPSrri, 3, A).addReg(C).addReg(B). + addImm(((M & 0xF) << 4) | ((M & 0xF0) >> 4)); + } + case X86::SHUFPDrri: { // A = SHUFPDrri B,C, M -> A = SHUFPDrri C,B, rotl(M,1) + unsigned A = MI->getOperand(0).getReg(); + unsigned B = MI->getOperand(1).getReg(); + unsigned C = MI->getOperand(2).getReg(); + unsigned M = MI->getOperand(3).getImmedValue(); + if (B == C) return 0; + return BuildMI(X86::SHUFPDrri, 3, A).addReg(C).addReg(B). + addImm(((M & 0x1) << 1) | ((M & 0x2) >> 1)); + } case X86::SHRD16rri8: // A = SHRD16rri8 B, C, I -> A = SHLD16rri8 C, B, (16-I) case X86::SHLD16rri8: // A = SHLD16rri8 B, C, I -> A = SHRD16rri8 C, B, (16-I) case X86::SHRD32rri8: // A = SHRD32rri8 B, C, I -> A = SHLD32rri8 C, B, (32-I) |