Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 55 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/Transforms/Utils/LowerMemIntrinsics.h b/clang-r353983/include/llvm/Transforms/Utils/LowerMemIntrinsics.h
new file mode 100644
index 00000000..8e9d7b52
--- /dev/null
+++ b/clang-r353983/include/llvm/Transforms/Utils/LowerMemIntrinsics.h
@@ -0,0 +1,55 @@
+//===- llvm/Transforms/Utils/LowerMemIntrinsics.h ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Lower memset, memcpy, memmov intrinsics to loops (e.g. for targets without
+// library support).
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H
+#define LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H
+
+namespace llvm {
+
+class ConstantInt;
+class Instruction;
+class MemCpyInst;
+class MemMoveInst;
+class MemSetInst;
+class TargetTransformInfo;
+class Value;
+
+/// Emit a loop implementing the semantics of llvm.memcpy where the size is not
+/// a compile-time constant. Loop will be insterted at \p InsertBefore.
+void createMemCpyLoopUnknownSize(Instruction *InsertBefore, Value *SrcAddr,
+                                 Value *DstAddr, Value *CopyLen,
+                                 unsigned SrcAlign, unsigned DestAlign,
+                                 bool SrcIsVolatile, bool DstIsVolatile,
+                                 const TargetTransformInfo &TTI);
+
+/// Emit a loop implementing the semantics of an llvm.memcpy whose size is a
+/// compile time constant. Loop is inserted at \p InsertBefore.
+void createMemCpyLoopKnownSize(Instruction *InsertBefore, Value *SrcAddr,
+                               Value *DstAddr, ConstantInt *CopyLen,
+                               unsigned SrcAlign, unsigned DestAlign,
+                               bool SrcIsVolatile, bool DstIsVolatile,
+                               const TargetTransformInfo &TTI);
+
+
+/// Expand \p MemCpy as a loop. \p MemCpy is not deleted.
+void expandMemCpyAsLoop(MemCpyInst *MemCpy, const TargetTransformInfo &TTI);
+
+/// Expand \p MemMove as a loop. \p MemMove is not deleted.
+void expandMemMoveAsLoop(MemMoveInst *MemMove);
+
+/// Expand \p MemSet as a loop. \p MemSet is not deleted.
+void expandMemSetAsLoop(MemSetInst *MemSet);
+
+} // End llvm namespace
+
+#endif