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Value numbers whose def index is a special sentinel value should not be remapped.

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llvm-svn: 54218
This commit is contained in:
Owen Anderson 2008-07-30 17:42:47 +00:00
parent df5916fff6
commit e6dca3efcb
1 changed files with 13 additions and 11 deletions
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6
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -176,6 +176,9 @@ void LiveIntervals::computeNumbering() {
// Remap the VNInfo def index, which works the same as the
// start indices above.
VNInfo* vni = LI->valno;
// VN's with special sentinel defs don't need to be remapped.
if (vni->def != ~0U && vni->def != ~1U) {
index = vni->def / InstrSlots::NUM;
offset = vni->def % InstrSlots::NUM;
if (offset == InstrSlots::LOAD) {
@ -186,10 +189,10 @@ void LiveIntervals::computeNumbering() {
(I == OldI2MBB.end() && OldI2MBB.size()>0) ? (I-1): I;
vni->def = getMBBStartIdx(J->second);
} else {
vni->def = mi2iMap_[OldI2MI[index]] + offset;
}
}
// Remap the VNInfo kill indices, which works the same as
// the end indices above.
@ -207,7 +210,6 @@ void LiveIntervals::computeNumbering() {
vni->kills[i] = getMBBEndIdx(I->second) + 1;
} else {
unsigned idx = index;
while (!OldI2MI[index]) ++index;
while (index < OldI2MI.size() && !OldI2MI[index]) ++index;
if (index != OldI2MI.size())