- 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
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 480d6dd..08f576c 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -184,11 +184,8 @@
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 @@
// 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);
}