From 1015ba7018c87f48cc7bb45a564eb4a27241e76a Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Fri, 21 May 2010 20:53:24 +0000 Subject: - Change MachineInstr::findRegisterDefOperandIdx so it can also look for defs that are aliases of the specified register. - Rename modifiesRegister to definesRegister since it's looking a def of the specific register or one of its super-registers. It's not looking for def of a sub-register or alias that could change the specified register. - Added modifiesRegister to look for defs of aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104377 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SimpleRegisterCoalescing.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp') diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index f95ac10494..93f0cb0f15 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -626,7 +626,8 @@ SimpleRegisterCoalescing::TrimLiveIntervalToLastUse(SlotIndex CopyIdx, if (tii_->isMoveInstr(*LastUseMI, SrcReg, DstReg, SrcSubIdx, DstSubIdx) && DstReg == li.reg && DstSubIdx == 0) { // Last use is itself an identity code. - int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg, false, tri_); + int DeadIdx = LastUseMI->findRegisterDefOperandIdx(li.reg, + false, false, tri_); LastUseMI->getOperand(DeadIdx).setIsDead(); } return true; @@ -949,7 +950,7 @@ static void PropagateDeadness(LiveInterval &li, MachineInstr *CopyMI, MachineInstr *DefMI = li_->getInstructionFromIndex(LRStart.getDefIndex()); if (DefMI && DefMI != CopyMI) { - int DeadIdx = DefMI->findRegisterDefOperandIdx(li.reg, false); + int DeadIdx = DefMI->findRegisterDefOperandIdx(li.reg); if (DeadIdx != -1) DefMI->getOperand(DeadIdx).setIsDead(); else -- cgit v1.2.3-70-g09d2