[Loop Utils] Move utilty addStringMetadataToLoop to LoopUtils.cpp. NFC.

Just move the utility function to LoopUtils.cpp to re-use it in loop peeling.

Reviewers: reames, Ashutosh
Reviewed By: reames
Subscribers: hiraditya, asbirlea, llvm-commits
Differential Revision: https://reviews.llvm.org/D65264

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@367085 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/LoopVersioningLICM.cpp b/lib/Transforms/Scalar/LoopVersioningLICM.cpp
index 896dd8bcb9229cb916c805d5369f6ed7cd4dfa86..2ccb7cae3079ee746c1efac4bcf6114da0d106c0 100644 (file)
--- a/lib/Transforms/Scalar/LoopVersioningLICM.cpp
+++ b/lib/Transforms/Scalar/LoopVersioningLICM.cpp
@@ -112,37 +112,6 @@ static cl::opt<unsigned> LVLoopDepthThreshold(
         "LoopVersioningLICM's threshold for maximum allowed loop nest/depth"),
     cl::init(2), cl::Hidden);
 
-/// Create MDNode for input string.
-static MDNode *createStringMetadata(Loop *TheLoop, StringRef Name, unsigned V) {
-  LLVMContext &Context = TheLoop->getHeader()->getContext();
-  Metadata *MDs[] = {
-      MDString::get(Context, Name),
-      ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(Context), V))};
-  return MDNode::get(Context, MDs);
-}
-
-/// Set input string into loop metadata by keeping other values intact.
-void llvm::addStringMetadataToLoop(Loop *TheLoop, const char *MDString,
-                                   unsigned V) {
-  SmallVector<Metadata *, 4> MDs(1);
-  // If the loop already has metadata, retain it.
-  MDNode *LoopID = TheLoop->getLoopID();
-  if (LoopID) {
-    for (unsigned i = 1, ie = LoopID->getNumOperands(); i < ie; ++i) {
-      MDNode *Node = cast<MDNode>(LoopID->getOperand(i));
-      MDs.push_back(Node);
-    }
-  }
-  // Add new metadata.
-  MDs.push_back(createStringMetadata(TheLoop, MDString, V));
-  // Replace current metadata node with new one.
-  LLVMContext &Context = TheLoop->getHeader()->getContext();
-  MDNode *NewLoopID = MDNode::get(Context, MDs);
-  // Set operand 0 to refer to the loop id itself.
-  NewLoopID->replaceOperandWith(0, NewLoopID);
-  TheLoop->setLoopID(NewLoopID);
-}
-
 namespace {
 
 struct LoopVersioningLICM : public LoopPass {

diff --git a/lib/Transforms/Utils/LoopUtils.cpp b/lib/Transforms/Utils/LoopUtils.cpp
index ec226e65f6502c5f72c640c0aefe7866ad8c6419..fef10352482ca3699bc6e5c613f98f10361578bb 100644 (file)
--- a/lib/Transforms/Utils/LoopUtils.cpp
+++ b/lib/Transforms/Utils/LoopUtils.cpp
@@ -191,6 +191,37 @@ void llvm::initializeLoopPassPass(PassRegistry &Registry) {
   INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 }
 
+/// Create MDNode for input string.
+static MDNode *createStringMetadata(Loop *TheLoop, StringRef Name, unsigned V) {
+  LLVMContext &Context = TheLoop->getHeader()->getContext();
+  Metadata *MDs[] = {
+      MDString::get(Context, Name),
+      ConstantAsMetadata::get(ConstantInt::get(Type::getInt32Ty(Context), V))};
+  return MDNode::get(Context, MDs);
+}
+
+/// Set input string into loop metadata by keeping other values intact.
+void llvm::addStringMetadataToLoop(Loop *TheLoop, const char *MDString,
+                                   unsigned V) {
+  SmallVector<Metadata *, 4> MDs(1);
+  // If the loop already has metadata, retain it.
+  MDNode *LoopID = TheLoop->getLoopID();
+  if (LoopID) {
+    for (unsigned i = 1, ie = LoopID->getNumOperands(); i < ie; ++i) {
+      MDNode *Node = cast<MDNode>(LoopID->getOperand(i));
+      MDs.push_back(Node);
+    }
+  }
+  // Add new metadata.
+  MDs.push_back(createStringMetadata(TheLoop, MDString, V));
+  // Replace current metadata node with new one.
+  LLVMContext &Context = TheLoop->getHeader()->getContext();
+  MDNode *NewLoopID = MDNode::get(Context, MDs);
+  // Set operand 0 to refer to the loop id itself.
+  NewLoopID->replaceOperandWith(0, NewLoopID);
+  TheLoop->setLoopID(NewLoopID);
+}
+
 /// Find string metadata for loop
 ///
 /// If it has a value (e.g. {"llvm.distribute", 1} return the value as an