5ac69674bf
This patch adds support for TargetExtType/target(...) representing SPIR-V builtin types. After D135202, target(...) is the preferred way for representing SPIR-V builtin types in LLVM IR and the only working in the opaque pointer mode. In order to maintain compatibility with LLVM IR generated by older versions of Clang and LLVM/SPIR-V Translator, pointers-to-opaque-structs denoting SPIR-V/OpenCL builtin types will be translated to equivalent SPIR-V target extension types. This translation is only available in the typed pointer mode (-opaque-pointers=0). The relevant LIT tests with SPIR-V builtins were converted to use the new target(...) notation. Differential Revision: https://reviews.llvm.org/D144494
55 lines
2.5 KiB
C++
55 lines
2.5 KiB
C++
//===-- SPIRVBuiltins.h - SPIR-V Built-in Functions -------------*- 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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// Lowering builtin function calls and types using their demangled names.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SPIRV_SPIRVBUILTINS_H
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#define LLVM_LIB_TARGET_SPIRV_SPIRVBUILTINS_H
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#include "SPIRVGlobalRegistry.h"
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#include "llvm/CodeGen/GlobalISel/CallLowering.h"
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#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
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namespace llvm {
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namespace SPIRV {
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/// Lowers a builtin funtion call using the provided \p DemangledCall skeleton
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/// and external instruction \p Set.
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///
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/// \return the lowering success status if the called function is a recognized
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/// builtin, std::nullopt otherwise.
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///
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/// \p DemangledCall is the skeleton of the lowered builtin function call.
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/// \p Set is the external instruction set containing the given builtin.
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/// \p OrigRet is the single original virtual return register if defined,
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/// Register(0) otherwise.
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/// \p OrigRetTy is the type of the \p OrigRet.
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/// \p Args are the arguments of the lowered builtin call.
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std::optional<bool> lowerBuiltin(const StringRef DemangledCall,
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InstructionSet::InstructionSet Set,
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MachineIRBuilder &MIRBuilder,
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const Register OrigRet, const Type *OrigRetTy,
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const SmallVectorImpl<Register> &Args,
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SPIRVGlobalRegistry *GR);
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/// Handles the translation of the provided special opaque/builtin type \p Type
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/// to SPIR-V type. Generates the corresponding machine instructions for the
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/// target type or gets the already existing OpType<...> register from the
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/// global registry \p GR.
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///
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/// \return A machine instruction representing the OpType<...> SPIR-V type.
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///
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/// \p Type is the special opaque/builtin type to be lowered.
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SPIRVType *lowerBuiltinType(const Type *Type,
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AccessQualifier::AccessQualifier AccessQual,
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MachineIRBuilder &MIRBuilder,
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SPIRVGlobalRegistry *GR);
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} // namespace SPIRV
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_SPIRV_SPIRVBUILTINS_H
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