Assing line number info to new PHIs created by SSA updater.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index f8c3326..c705cc5 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -538,3 +538,15 @@
UncondBranch->eraseFromParent();
return cast<ReturnInst>(NewRet);
}
+
+/// GetFirstDebugLocInBasicBlock - Return first valid DebugLoc entry in a
+/// given basic block.
+DebugLoc llvm::GetFirstDebugLocInBasicBlock(const BasicBlock *BB) {
+ for (BasicBlock::const_iterator BI = BB->begin(), BE = BB->end();
+ BI != BE; ++BI) {
+ DebugLoc DL = BI->getDebugLoc();
+ if (!DL.isUnknown())
+ return DL;
+ }
+ return DebugLoc();
+}
diff --git a/lib/Transforms/Utils/SSAUpdater.cpp b/lib/Transforms/Utils/SSAUpdater.cpp
index cd7f068..2860c3e 100644
--- a/lib/Transforms/Utils/SSAUpdater.cpp
+++ b/lib/Transforms/Utils/SSAUpdater.cpp
@@ -21,8 +21,10 @@
#include "llvm/Support/CFG.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/SSAUpdater.h"
#include "llvm/Transforms/Utils/SSAUpdaterImpl.h"
+
using namespace llvm;
typedef DenseMap<BasicBlock*, Value*> AvailableValsTy;
@@ -185,6 +187,9 @@
return V;
}
+ // Set DebugLoc.
+ InsertedPHI->setDebugLoc(GetFirstDebugLocInBasicBlock(BB));
+
// If the client wants to know about all new instructions, tell it.
if (InsertedPHIs) InsertedPHIs->push_back(InsertedPHI);