Prevented reg0 from being added to MBB live-in set, which was causing issues
for PostRAScheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71991 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 9b2c92c..6bad2db 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -765,6 +765,11 @@
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) {