From e52c191890057ab4cec065505b0b27f8586eb1b5 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 3 Jul 2008 09:09:37 +0000 Subject: - Remove calls to copyKillDeadInfo which is an N^2 function. Instead, propagate kill / dead markers as new instructions are constructed in foldMemoryOperand, convertToThressAddress, etc. - Also remove LiveVariables::instructionChanged, etc. Replace all calls with cheaper calls which update VarInfo kill list. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53097 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/TwoAddressInstructionPass.cpp | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp') diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index 480d6dd389..08f576c956 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -184,11 +184,8 @@ bool TwoAddressInstructionPass::Sink3AddrInstruction(MachineBasicBlock *MBB, KillMO = MI->findRegisterUseOperand(SavedReg, false, TRI); KillMO->setIsKill(true); - if (LV) { - LiveVariables::VarInfo& VarInfo = LV->getVarInfo(SavedReg); - VarInfo.removeKill(KillMI); - VarInfo.Kills.push_back(MI); - } + if (LV) + LV->replaceKillInstruction(SavedReg, KillMI, MI); // Move instruction to its destination. MBB->remove(MI); @@ -454,10 +451,10 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { // regB is used in this BB. varInfoB.UsedBlocks[mbbi->getNumber()] = true; - if (LV->removeVirtualRegisterKilled(regB, mbbi, mi)) + if (LV->removeVirtualRegisterKilled(regB, mi)) LV->addVirtualRegisterKilled(regB, prevMi); - if (LV->removeVirtualRegisterDead(regB, mbbi, mi)) + if (LV->removeVirtualRegisterDead(regB, mi)) LV->addVirtualRegisterDead(regB, prevMi); } -- cgit v1.2.3