f7bebc1914
Adds AMDGPU specific variadic MCExpr operations 'max' and 'or'. Relands #82022 with fixes
73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
//===- AMDGPUMCExpr.h - AMDGPU specific MC expression classes ---*- 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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#ifndef LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
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#define LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/MC/MCExpr.h"
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namespace llvm {
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/// AMDGPU target specific variadic MCExpr operations.
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///
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/// Takes in a minimum of 1 argument to be used with an operation. The supported
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/// operations are:
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/// - (bitwise) or
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/// - max
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///
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/// \note If the 'or'/'max' operations are provided only a single argument, the
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/// operation will act as a no-op and simply resolve as the provided argument.
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///
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class AMDGPUVariadicMCExpr : public MCTargetExpr {
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public:
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enum VariadicKind { AGVK_None, AGVK_Or, AGVK_Max };
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private:
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VariadicKind Kind;
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MCContext &Ctx;
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const MCExpr **RawArgs;
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ArrayRef<const MCExpr *> Args;
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AMDGPUVariadicMCExpr(VariadicKind Kind, ArrayRef<const MCExpr *> Args,
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MCContext &Ctx);
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~AMDGPUVariadicMCExpr();
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public:
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static const AMDGPUVariadicMCExpr *
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create(VariadicKind Kind, ArrayRef<const MCExpr *> Args, MCContext &Ctx);
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static const AMDGPUVariadicMCExpr *createOr(ArrayRef<const MCExpr *> Args,
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MCContext &Ctx) {
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return create(VariadicKind::AGVK_Or, Args, Ctx);
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}
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static const AMDGPUVariadicMCExpr *createMax(ArrayRef<const MCExpr *> Args,
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MCContext &Ctx) {
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return create(VariadicKind::AGVK_Max, Args, Ctx);
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}
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VariadicKind getKind() const { return Kind; }
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const MCExpr *getSubExpr(size_t Index) const;
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void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override;
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bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override;
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void visitUsedExpr(MCStreamer &Streamer) const override;
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MCFragment *findAssociatedFragment() const override;
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void fixELFSymbolsInTLSFixups(MCAssembler &) const override{};
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Target;
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}
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCEXPR_H
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