From eea81bafd624c36d396a08bea87bafd996e6bf43 Mon Sep 17 00:00:00 2001 From: Alkis Evlogimenos Date: Mon, 2 Feb 2004 21:56:40 +0000 Subject: [PATCH] Correctly update def/use information for modified machine operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11087 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/TwoAddressInstructionPass.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index 991be42e531..ecd22abe311 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -146,11 +146,17 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { LV.addVirtualRegisterDead(regB, &*mbbi, prevMi); // replace all occurences of regB with regA + // and mark all uses and defs of regA as def&use for (unsigned i = 1; i < mi->getNumOperands(); ++i) { - if (mi->getOperand(i).isRegister() && - mi->getOperand(i).getReg() == regB) - mi->SetMachineOperandReg(i, regA); + MachineOperand& op = mi->getOperand(i); + if (op.isRegister()) { + if (op.getReg() == regB) + mi->SetMachineOperandReg(i, regA); + if (op.getReg() == regA) + op.setDef().setUse(); + } } + DEBUG(std::cerr << "\t\tmodified original to: "; mi->print(std::cerr, TM)); assert(mi->getOperand(0).getAllocatedRegNum() ==