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Avoid using VNInfo::getCopy as much as possible. I want to get rid of it.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114794 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-09-25 18:10:38 +00:00
parent e398018e86
commit 207f8f688b
2 changed files with 10 additions and 10 deletions
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4
include/llvm/CodeGen/LiveInterval.h
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@ -90,6 +90,10 @@ namespace llvm {
/// undefined behavior.
void setCopy(MachineInstr *c) { copy = c; }
/// isDefByCopy - Return true when this value was defined by a copy-like
/// instruction as determined by MachineInstr::isCopyLike.
bool isDefByCopy() const { return copy != 0; }
/// Returns true if one or more kills are PHI nodes.
bool hasPHIKill() const { return flags & HAS_PHI_KILL; }
/// Set the PHI kill flag on this value.

16
lib/CodeGen/SimpleRegisterCoalescing.cpp
View File

@ -124,7 +124,7 @@ bool SimpleRegisterCoalescing::AdjustCopiesBackFrom(const CoalescerPair &CP,
// Get the location that B is defined at. Two options: either this value has
// an unknown definition point or it is defined at CopyIdx. If unknown, we
// can't process it.
if (!BValNo->getCopy()) return false;
if (!BValNo->isDefByCopy()) return false;
assert(BValNo->def == CopyIdx && "Copy doesn't define the value?");
// AValNo is the value number in A that defines the copy, A3 in the example.
@ -266,10 +266,6 @@ bool SimpleRegisterCoalescing::HasOtherReachingDefs(LiveInterval &IntA,
for (; BI != IntB.ranges.end() && AI->end >= BI->start; ++BI) {
if (BI->valno == BValNo)
continue;
// When BValNo is null, we're looking for a dummy clobber-value for a subreg.
if (!BValNo && li_->getInstructionFromIndex(BI->valno->def) == 0 &&
!BI->valno->getCopy())
continue;
if (BI->start <= AI->start && BI->end > AI->start)
return true;
if (BI->start > AI->start && BI->start < AI->end)
@ -342,7 +338,7 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(const CoalescerPair &CP,
// Get the location that B is defined at. Two options: either this value has
// an unknown definition point or it is defined at CopyIdx. If unknown, we
// can't process it.
if (!BValNo->getCopy()) return false;
if (!BValNo->isDefByCopy()) return false;
assert(BValNo->def == CopyIdx && "Copy doesn't define the value?");
// AValNo is the value number in A that defines the copy, A3 in the example.
@ -873,7 +869,7 @@ void SimpleRegisterCoalescing::RemoveCopyFlag(unsigned DstReg,
if (li_->hasInterval(DstReg)) {
LiveInterval &LI = li_->getInterval(DstReg);
if (const LiveRange *LR = LI.getLiveRangeContaining(DefIdx))
if (LR->valno->getCopy() == CopyMI)
if (LR->valno->def == DefIdx)
LR->valno->setCopy(0);
}
if (!TargetRegisterInfo::isPhysicalRegister(DstReg))
@ -883,7 +879,7 @@ void SimpleRegisterCoalescing::RemoveCopyFlag(unsigned DstReg,
continue;
LiveInterval &LI = li_->getInterval(*AS);
if (const LiveRange *LR = LI.getLiveRangeContaining(DefIdx))
if (LR->valno->getCopy() == CopyMI)
if (LR->valno->def == DefIdx)
LR->valno->setCopy(0);
}
}
@ -1316,7 +1312,7 @@ bool SimpleRegisterCoalescing::JoinIntervals(CoalescerPair &CP) {
for (LiveInterval::vni_iterator i = LHS.vni_begin(), e = LHS.vni_end();
i != e; ++i) {
VNInfo *VNI = *i;
if (VNI->isUnused() || VNI->getCopy() == 0) // Src not defined by a copy?
if (VNI->isUnused() || !VNI->isDefByCopy()) // Src not defined by a copy?
continue;
// Never join with a register that has EarlyClobber redefs.
@ -1340,7 +1336,7 @@ bool SimpleRegisterCoalescing::JoinIntervals(CoalescerPair &CP) {
for (LiveInterval::vni_iterator i = RHS.vni_begin(), e = RHS.vni_end();
i != e; ++i) {
VNInfo *VNI = *i;
if (VNI->isUnused() || VNI->getCopy() == 0) // Src not defined by a copy?
if (VNI->isUnused() || !VNI->isDefByCopy()) // Src not defined by a copy?
continue;
// Never join with a register that has EarlyClobber redefs.