[llvm] r276471 - Add invariant start call creation in IRBuilder.NFC

[Anna Thomas via llvm-commits]

Author: annat
Date: Fri Jul 22 15:57:23 2016
New Revision: 276471

URL: http://llvm.org/viewvc/llvm-project?rev=276471&view=rev
Log:
Add invariant start call creation in IRBuilder.NFC

Differential Revision: https://reviews.llvm.org/D22700

Modified:
    llvm/trunk/include/llvm/IR/IRBuilder.h
    llvm/trunk/lib/IR/IRBuilder.cpp

Modified: llvm/trunk/include/llvm/IR/IRBuilder.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/IRBuilder.h?rev=276471&r1=276470&r2=276471&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/IRBuilder.h (original)
+++ llvm/trunk/include/llvm/IR/IRBuilder.h Fri Jul 22 15:57:23 2016
@@ -446,6 +446,11 @@ public:
   /// If the pointer isn't i8* it will be converted.
   CallInst *CreateLifetimeEnd(Value *Ptr, ConstantInt *Size = nullptr);
 
+  /// Create a call to invariant.start intrinsic.
+  ///
+  /// If the pointer isn't i8* it will be converted.
+  CallInst *CreateInvariantStart(Value *Ptr, ConstantInt *Size = nullptr);
+
   /// \brief Create a call to Masked Load intrinsic
   CallInst *CreateMaskedLoad(Value *Ptr, unsigned Align, Value *Mask,
                              Value *PassThru = nullptr, const Twine &Name = "");

Modified: llvm/trunk/lib/IR/IRBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/IRBuilder.cpp?rev=276471&r1=276470&r2=276471&view=diff
==============================================================================
--- llvm/trunk/lib/IR/IRBuilder.cpp (original)
+++ llvm/trunk/lib/IR/IRBuilder.cpp Fri Jul 22 15:57:23 2016
@@ -191,6 +191,26 @@ CallInst *IRBuilderBase::CreateLifetimeE
   return createCallHelper(TheFn, Ops, this);
 }
 
+CallInst *IRBuilderBase::CreateInvariantStart(Value *Ptr, ConstantInt *Size) {
+
+  assert(isa<PointerType>(Ptr->getType()) &&
+         "invariant.start only applies to pointers.");
+  Ptr = getCastedInt8PtrValue(Ptr);
+  if (!Size)
+    Size = getInt64(-1);
+  else
+    assert(Size->getType() == getInt64Ty() &&
+           "invariant.start requires the size to be an i64");
+
+  Value *Ops[] = {Size, Ptr};
+  // Fill in the single overloaded type: memory object type.
+  Type *ObjectPtr[1] = {Ptr->getType()};
+  Module *M = BB->getParent()->getParent();
+  Value *TheFn =
+      Intrinsic::getDeclaration(M, Intrinsic::invariant_start, ObjectPtr);
+  return createCallHelper(TheFn, Ops, this);
+}
+
 CallInst *IRBuilderBase::CreateAssumption(Value *Cond) {
   assert(Cond->getType() == getInt1Ty() &&
          "an assumption condition must be of type i1");