[IR] Introduce helpers to skip debug instructions (NFC)
This patch introduces two helpers to make it easier to ignore debug
intrinsics:
- Instruction::getNextNonDebugInstruction()
This is just like Instruction::getNextNode(), except that it skips debug
info.
- skipDebugInfo(BasicBlock::iterator)
A free function which advances a BasicBlock iterator past any debug
info. This is a no-op when the iterator already points to a non-debug
instruction.
Part of: llvm.org/PR37728
Related to: https://reviews.llvm.org/D47874
Differential Revision: https://reviews.llvm.org/D48305
llvm-svn: 335083
diff --git a/llvm/lib/IR/BasicBlock.cpp b/llvm/lib/IR/BasicBlock.cpp
index c103de4..005a772 100644
--- a/llvm/lib/IR/BasicBlock.cpp
+++ b/llvm/lib/IR/BasicBlock.cpp
@@ -479,3 +479,9 @@
}
return Optional<uint64_t>();
}
+
+BasicBlock::iterator llvm::skipDebugInfo(BasicBlock::iterator It) {
+ while (isa<DbgInfoIntrinsic>(It))
+ ++It;
+ return It;
+}