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Skip unused values.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124842 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-02-04 00:59:23 +00:00
parent 45139874a7
commit 9ecd1e7197
1 changed files with 3 additions and 1 deletions
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4
lib/CodeGen/SplitKit.cpp
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@ -948,6 +948,8 @@ void SplitEditor::finish() {
for (LiveInterval::const_vni_iterator I = Edit.getParent().vni_begin(),
E = Edit.getParent().vni_end(); I != E; ++I) {
const VNInfo *ParentVNI = *I;
if (ParentVNI->isUnused())
continue;
LiveIntervalMap &LIM = LIMappers[RegAssign.lookup(ParentVNI->def)];
VNInfo *VNI = LIM.defValue(ParentVNI, ParentVNI->def);
LIM.getLI()->addRange(LiveRange(ParentVNI->def,
@ -976,7 +978,7 @@ void SplitEditor::finish() {
for (LiveInterval::const_vni_iterator I = Edit.getParent().vni_begin(),
E = Edit.getParent().vni_end(); I != E; ++I) {
const VNInfo *PHIVNI = *I;
if (!PHIVNI->isPHIDef())
if (PHIVNI->isUnused() || !PHIVNI->isPHIDef())
continue;
unsigned RegIdx = RegAssign.lookup(PHIVNI->def);
LiveIntervalMap &LIM = LIMappers[RegIdx];