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-rw-r--r--llvm/lib/CodeGen/RegAllocPBQP.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/RegAllocPBQP.cpp b/llvm/lib/CodeGen/RegAllocPBQP.cpp
index 9b2c92c13e5..6bad2db44d1 100644
--- a/llvm/lib/CodeGen/RegAllocPBQP.cpp
+++ b/llvm/lib/CodeGen/RegAllocPBQP.cpp
@@ -765,6 +765,11 @@ void PBQPRegAlloc::finalizeAlloc() const {
continue;
}
+ // Ignore unallocated vregs:
+ if (reg == 0) {
+ continue;
+ }
+
// Iterate over the ranges of the current interval...
for (LRIterator lrItr = li->begin(), lrEnd = li->end();
lrItr != lrEnd; ++lrItr) {
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