Skip unused values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124842 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index 3ffb079..e4a82ad 100644
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -948,6 +948,8 @@
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 @@
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];