6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
//===-- IntrinsicLowering.h - Intrinsic Function Lowering -------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the IntrinsicLowering interface. This interface allows
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// addition of domain-specific or front-end specific intrinsics to LLVM without
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// having to modify all of the C backend or interpreter.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_INTRINSICLOWERING_H
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#define LLVM_CODEGEN_INTRINSICLOWERING_H
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namespace llvm {
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class CallInst;
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class DataLayout;
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class IntrinsicLowering {
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const DataLayout &DL;
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bool Warned = false;
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public:
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explicit IntrinsicLowering(const DataLayout &DL) : DL(DL) {}
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/// Replace a call to the specified intrinsic function.
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/// If an intrinsic function must be implemented by the code generator
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/// (such as va_start), this function should print a message and abort.
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///
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/// Otherwise, if an intrinsic function call can be lowered, the code to
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/// implement it (often a call to a non-intrinsic function) is inserted
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/// _after_ the call instruction and the call is deleted. The caller must
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/// be capable of handling this kind of change.
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void LowerIntrinsicCall(CallInst *CI);
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/// Try to replace a call instruction with a call to a bswap intrinsic. Return
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/// false if the call is not a simple integer bswap.
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static bool LowerToByteSwap(CallInst *CI);
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};
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}
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#endif
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