diff options
| author | Stephen Hines <srhines@google.com> | 2019-07-02 16:25:20 -0700 |
|---|---|---|
| committer | Ali B <abittin@gmail.com> | 2019-07-05 19:33:16 +0300 |
| commit | 9afee4e65dc5f9f5eb371683729ff67b8df81d03 (patch) | |
| tree | 4cf241d6c9044f91ee8c06e6920174d06f8de0b6 /clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h | |
| parent | 2f19bd722c4c825320d1511c1ed83161b7f95d51 (diff) | |
clang 9.0.5 (based on r353983e) from build 5696680.
Bug: http://b/135931688
Bug: http://b/136008926
Test: N/A
Change-Id: I922d17410047d2e2df4625615352c588ee71b203
Diffstat (limited to 'clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h')
| -rw-r--r-- | clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h b/clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h new file mode 100644 index 00000000..daf2d9a4 --- /dev/null +++ b/clang-r353983e/include/llvm/CodeGen/IntrinsicLowering.h @@ -0,0 +1,49 @@ +//===-- IntrinsicLowering.h - Intrinsic Function Lowering -------*- 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 +// +//===----------------------------------------------------------------------===// +// +// This file defines the IntrinsicLowering interface. This interface allows +// addition of domain-specific or front-end specific intrinsics to LLVM without +// having to modify all of the C backend or interpreter. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CODEGEN_INTRINSICLOWERING_H +#define LLVM_CODEGEN_INTRINSICLOWERING_H + +#include "llvm/IR/Intrinsics.h" + +namespace llvm { +class CallInst; +class Module; +class DataLayout; + +class IntrinsicLowering { + const DataLayout &DL; + + bool Warned; + +public: + explicit IntrinsicLowering(const DataLayout &DL) : DL(DL), Warned(false) {} + + /// Replace a call to the specified intrinsic function. + /// If an intrinsic function must be implemented by the code generator + /// (such as va_start), this function should print a message and abort. + /// + /// Otherwise, if an intrinsic function call can be lowered, the code to + /// implement it (often a call to a non-intrinsic function) is inserted + /// _after_ the call instruction and the call is deleted. The caller must + /// be capable of handling this kind of change. + void LowerIntrinsicCall(CallInst *CI); + + /// Try to replace a call instruction with a call to a bswap intrinsic. Return + /// false if the call is not a simple integer bswap. + static bool LowerToByteSwap(CallInst *CI); +}; +} + +#endif |
