diff options
| -rw-r--r-- | lib/CodeGen/SplitKit.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp index 98ed2cf12f..4a2b7ec1cf 100644 --- a/lib/CodeGen/SplitKit.cpp +++ b/lib/CodeGen/SplitKit.cpp @@ -652,7 +652,7 @@ void SplitEditor::removeBackCopies(SmallVectorImpl<VNInfo*> &Copies) { // Adjust RegAssign if a register assignment is killed at VNI->def. We // want to avoid calculating the live range of the source register if // possible. - AssignI.find(VNI->def.getPrevSlot()); + AssignI.find(Def.getPrevSlot()); if (!AssignI.valid() || AssignI.start() >= Def) continue; // If MI doesn't kill the assigned register, just leave it. @@ -739,6 +739,8 @@ void SplitEditor::hoistCopiesForSize() { for (LiveInterval::vni_iterator VI = LI->vni_begin(), VE = LI->vni_end(); VI != VE; ++VI) { VNInfo *VNI = *VI; + if (VNI->isUnused()) + continue; VNInfo *ParentVNI = Edit->getParent().getVNInfoAt(VNI->def); assert(ParentVNI && "Parent not live at complement def"); @@ -812,6 +814,8 @@ void SplitEditor::hoistCopiesForSize() { for (LiveInterval::vni_iterator VI = LI->vni_begin(), VE = LI->vni_end(); VI != VE; ++VI) { VNInfo *VNI = *VI; + if (VNI->isUnused()) + continue; VNInfo *ParentVNI = Edit->getParent().getVNInfoAt(VNI->def); const DomPair &Dom = NearestDom[ParentVNI->id]; if (!Dom.first || Dom.second == VNI->def) |