diff options
| -rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index c060127e2c..d8ede2734e 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -849,13 +849,13 @@ bool llvm::SimplifyCFG(BasicBlock *BB) { while (!BB->empty()) { Instruction &I = BB->back(); // If this instruction is used, replace uses with an arbitrary - // constant value. Because control flow can't get here, we don't care + // value. Because control flow can't get here, we don't care // what we replace the value with. Note that since this block is // unreachable, and all values contained within it must dominate their // uses, that all uses will eventually be removed. if (!I.use_empty()) - // Make all users of this instruction reference the constant instead - I.replaceAllUsesWith(Constant::getNullValue(I.getType())); + // Make all users of this instruction use undef instead + I.replaceAllUsesWith(UndefValue::get(I.getType())); // Remove the instruction from the basic block BB->getInstList().pop_back(); |