Clear the entering, exiting and internal ranges of a bundle before collecting
ranges for the instruction about to be bundled. This fixes a bug in an external
project where an assertion was triggered due to spurious 'multiple defs' within
the bundle.
Patch by Ivan Llopard. Thanks Ivan!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157632 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 78a634a..bb767a7 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1097,6 +1097,9 @@
BundleRanges BR = createBundleRanges(Entering, Internal, Exiting);
+ Entering.clear();
+ Internal.clear();
+ Exiting.clear();
collectRanges(MI, Entering, Internal, Exiting, hasRegMaskOp, OldIdx);
assert(!hasRegMaskOp && "Can't have RegMask operand in bundle.");