Instruction counters must skip the bitcasts that
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65976 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index 2887bdc..fd7b7da 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -477,6 +477,12 @@
Instruction *Inst = --ScanFrom;
if (isa<DbgInfoIntrinsic>(Inst))
continue;
+ // Likewise, we skip bitcasts that feed into a llvm.dbg.declare; these are
+ // not present when debugging is off.
+ if (isa<BitCastInst>(Inst) && Inst->hasOneUse() &&
+ isa<DbgDeclareInst>(Inst->use_begin()))
+ continue;
+
// Restore ScanFrom to expected value in case next test succeeds
ScanFrom++;