diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86FlagsCopyLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86FlagsCopyLowering.cpp | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/llvm/lib/Target/X86/X86FlagsCopyLowering.cpp b/llvm/lib/Target/X86/X86FlagsCopyLowering.cpp index 6d77170f709..52ae70a60dc 100644 --- a/llvm/lib/Target/X86/X86FlagsCopyLowering.cpp +++ b/llvm/lib/Target/X86/X86FlagsCopyLowering.cpp @@ -599,7 +599,7 @@ bool X86FlagsCopyLoweringPass::runOnMachineFunction(MachineFunction &MF) { } // Otherwise we can just rewrite in-place. - if (X86::getCondFromCMovOpc(MI.getOpcode()) != X86::COND_INVALID) { + if (X86::getCondFromCMov(MI) != X86::COND_INVALID) { rewriteCMov(*TestMBB, TestPos, TestLoc, MI, *FlagUse, CondRegs); } else if (X86::getCondFromSETOpc(MI.getOpcode()) != X86::COND_INVALID) { @@ -841,7 +841,7 @@ void X86FlagsCopyLoweringPass::rewriteCMov(MachineBasicBlock &TestMBB, MachineOperand &FlagUse, CondRegArray &CondRegs) { // First get the register containing this specific condition. - X86::CondCode Cond = X86::getCondFromCMovOpc(CMovI.getOpcode()); + X86::CondCode Cond = X86::getCondFromCMov(CMovI); unsigned CondReg; bool Inverted; std::tie(CondReg, Inverted) = @@ -852,12 +852,10 @@ void X86FlagsCopyLoweringPass::rewriteCMov(MachineBasicBlock &TestMBB, // Insert a direct test of the saved register. insertTest(MBB, CMovI.getIterator(), CMovI.getDebugLoc(), CondReg); - // Rewrite the CMov to use the !ZF flag from the test (but match register - // size and memory operand), and then kill its use of the flags afterward. - auto &CMovRC = *MRI->getRegClass(CMovI.getOperand(0).getReg()); - CMovI.setDesc(TII->get(X86::getCMovFromCond( - Inverted ? X86::COND_E : X86::COND_NE, TRI->getRegSizeInBits(CMovRC) / 8, - !CMovI.memoperands_empty()))); + // Rewrite the CMov to use the !ZF flag from the test, and then kill its use + // of the flags afterward. + CMovI.getOperand(CMovI.getDesc().getNumOperands() - 1) + .setImm(Inverted ? X86::COND_E : X86::COND_NE); FlagUse.setIsKill(true); LLVM_DEBUG(dbgs() << " fixed cmov: "; CMovI.dump()); } |
