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Removed VNInfo::isDefAccurate(). Def "accuracy" can be checked by testing whether LiveIntervals::getInstructionFromIndex(def) returns NULL.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114791 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2010-09-25 12:04:16 +00:00
parent 8db2defa83
commit 6e2968c85c
11 changed files with 78 additions and 104 deletions
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8
lib/CodeGen/RegAllocLinearScan.cpp
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@ -431,8 +431,7 @@ unsigned RALinScan::attemptTrivialCoalescing(LiveInterval &cur, unsigned Reg) {
unsigned CandReg;
{
MachineInstr *CopyMI;
if (vni->def != SlotIndex() && vni->isDefAccurate() &&
(CopyMI = li_->getInstructionFromIndex(vni->def)) && CopyMI->isCopy())
if ((CopyMI = li_->getInstructionFromIndex(vni->def)) && CopyMI->isCopy())
// Defined by a copy, try to extend SrcReg forward
CandReg = CopyMI->getOperand(1).getReg();
else if (TrivCoalesceEnds &&
@ -800,7 +799,7 @@ static void addStackInterval(LiveInterval *cur, LiveStacks *ls_,
if (SI.hasAtLeastOneValue())
VNI = SI.getValNumInfo(0);
else
VNI = SI.getNextValue(SlotIndex(), 0, false,
VNI = SI.getNextValue(SlotIndex(), 0,
ls_->getVNInfoAllocator());
LiveInterval &RI = li_->getInterval(cur->reg);
@ -984,8 +983,7 @@ void RALinScan::assignRegOrStackSlotAtInterval(LiveInterval* cur) {
// one, e.g. X86::mov32to32_. These move instructions are not coalescable.
if (!vrm_->getRegAllocPref(cur->reg) && cur->hasAtLeastOneValue()) {
VNInfo *vni = cur->begin()->valno;
if ((vni->def != SlotIndex()) && !vni->isUnused() &&
vni->isDefAccurate()) {
if (!vni->isUnused()) {
MachineInstr *CopyMI = li_->getInstructionFromIndex(vni->def);
if (CopyMI && CopyMI->isCopy()) {
unsigned DstSubReg = CopyMI->getOperand(0).getSubReg();