Ignore dbg intrinsics while propagating conditional expression info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63876 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 17 insertions, 14 deletions

diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index c22485342e..aa6efe80b3 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -148,6 +148,23 @@ bool llvm::ConstantFoldTerminator(BasicBlock *BB) {
   return false;
 }
 
+//===----------------------------------------------------------------------===//
+//  CFG Simplification
+//
+
+/// isTerminatorFirstRelevantInsn - Return true if Term is very first 
+/// instruction ignoring Phi nodes and dbg intrinsics.
+bool llvm::isTerminatorFirstRelevantInsn(BasicBlock *BB, Instruction *Term) {
+  BasicBlock::iterator BBI = Term;
+  while (BBI != BB->begin()) {
+    --BBI;
+    if (!isa<DbgInfoIntrinsic>(BBI))
+      break;
+  }
+  if (isa<PHINode>(BBI) || &*BBI == Term)
+    return true;
+  return false;
+}
 
 //===----------------------------------------------------------------------===//
 //  Local dead code elimination...
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index d9c4b69e6d..0248d3d0ca 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -1330,20 +1330,6 @@ static bool FoldTwoEntryPHINode(PHINode *PN) {
   return true;
 }
 
-/// isTerminatorFirstRelevantInsn - Return true if Term is very first 
-/// instruction ignoring Phi nodes and dbg intrinsics.
-static bool isTerminatorFirstRelevantInsn(BasicBlock *BB, Instruction *Term) {
-  BasicBlock::iterator BBI = Term;
-  while (BBI != BB->begin()) {
-    --BBI;
-    if (!isa<DbgInfoIntrinsic>(BBI))
-      break;
-  }
-  if (isa<PHINode>(BBI) || &*BBI == Term)
-    return true;
-  return false;
-}
-
 /// SimplifyCondBranchToTwoReturns - If we found a conditional branch that goes
 /// to two returning blocks, try to merge them together into one return,
 /// introducing a select if the return values disagree.