1//===- AMDGPUMCExpr.h - AMDGPU specific MC expression classes ---*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
10#define LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
11
12#include "llvm/ADT/ArrayRef.h"
13#include "llvm/MC/MCExpr.h"
14
15namespace llvm {
16
17/// AMDGPU target specific variadic MCExpr operations.
18///
19/// Takes in a minimum of 1 argument to be used with an operation. The supported
20/// operations are:
21/// - (bitwise) or
22/// - max
23///
24/// \note If the 'or'/'max' operations are provided only a single argument, the
25/// operation will act as a no-op and simply resolve as the provided argument.
26///
27class AMDGPUVariadicMCExpr : public MCTargetExpr {
28public:
29 enum VariadicKind { AGVK_None, AGVK_Or, AGVK_Max };
30
31private:
32 VariadicKind Kind;
33 MCContext &Ctx;
34 const MCExpr **RawArgs;
35 ArrayRef<const MCExpr *> Args;
36
37 AMDGPUVariadicMCExpr(VariadicKind Kind, ArrayRef<const MCExpr *> Args,
38 MCContext &Ctx);
39 ~AMDGPUVariadicMCExpr();
40
41public:
42 static const AMDGPUVariadicMCExpr *
43 create(VariadicKind Kind, ArrayRef<const MCExpr *> Args, MCContext &Ctx);
44
45 static const AMDGPUVariadicMCExpr *createOr(ArrayRef<const MCExpr *> Args,
46 MCContext &Ctx) {
47 return create(Kind: VariadicKind::AGVK_Or, Args, Ctx);
48 }
49
50 static const AMDGPUVariadicMCExpr *createMax(ArrayRef<const MCExpr *> Args,
51 MCContext &Ctx) {
52 return create(Kind: VariadicKind::AGVK_Max, Args, Ctx);
53 }
54
55 VariadicKind getKind() const { return Kind; }
56 const MCExpr *getSubExpr(size_t Index) const;
57
58 void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
59 bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
60 const MCFixup *Fixup) const override;
61 void visitUsedExpr(MCStreamer &Streamer) const override;
62 MCFragment *findAssociatedFragment() const override;
63 void fixELFSymbolsInTLSFixups(MCAssembler &) const override{};
64
65 static bool classof(const MCExpr *E) {
66 return E->getKind() == MCExpr::Target;
67 }
68};
69
70} // end namespace llvm
71
72#endif // LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
73

source code of llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCExpr.h