diff options
Diffstat (limited to 'lib/Transforms/Scalar/SCCP.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/SCCP.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp index c202a2c..9778278 100644 --- a/lib/Transforms/Scalar/SCCP.cpp +++ b/lib/Transforms/Scalar/SCCP.cpp @@ -1869,8 +1869,12 @@ bool IPSCCP::runOnModule(Module &M) { for (unsigned i = 0, e = BlocksToErase.size(); i != e; ++i) { // If there are any PHI nodes in this successor, drop entries for BB now. BasicBlock *DeadBB = BlocksToErase[i]; - while (!DeadBB->use_empty()) { - Instruction *I = cast<Instruction>(DeadBB->use_back()); + for (Value::use_iterator UI = DeadBB->use_begin(), UE = DeadBB->use_end(); + UI != UE; ) { + // Ignore blockaddress users; BasicBlock's dtor will handle them. + Instruction *I = dyn_cast<Instruction>(*UI++); + if (!I) continue; + bool Folded = ConstantFoldTerminator(I->getParent()); if (!Folded) { // The constant folder may not have been able to fold the terminator |