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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- LowerAtomic.h - Lower atomic intrinsics ------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// \file |
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| 9 | // This pass lowers atomic intrinsics to non-atomic form for use in a known |
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| 10 | // non-preemptible environment. |
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| 11 | /// |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |||
| 14 | #ifndef LLVM_TRANSFORMS_UTILS_LOWERATOMIC_H |
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| 15 | #define LLVM_TRANSFORMS_UTILS_LOWERATOMIC_H |
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| 16 | |||
| 17 | #include "llvm/IR/Instructions.h" |
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| 18 | |||
| 19 | namespace llvm { |
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| 20 | |||
| 21 | class IRBuilderBase; |
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| 22 | |||
| 23 | /// Convert the given Cmpxchg into primitive load and compare. |
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| 24 | bool lowerAtomicCmpXchgInst(AtomicCmpXchgInst *CXI); |
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| 25 | |||
| 26 | /// Convert the given RMWI into primitive load and stores, |
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| 27 | /// assuming that doing so is legal. Return true if the lowering |
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| 28 | /// succeeds. |
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| 29 | bool lowerAtomicRMWInst(AtomicRMWInst *RMWI); |
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| 30 | |||
| 31 | /// Emit IR to implement the given atomicrmw operation on values in registers, |
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| 32 | /// returning the new value. |
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| 33 | Value *buildAtomicRMWValue(AtomicRMWInst::BinOp Op, IRBuilderBase &Builder, |
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| 34 | Value *Loaded, Value *Val); |
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| 35 | } |
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| 36 | |||
| 37 | #endif // LLVM_TRANSFORMS_UTILS_LOWERATOMIC_H |