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12d03e3fae
Allow inlining only when the Callee has a subset of the Caller's features. In principle, we should be able to inline regardless of any features because WebAssembly supports features at module granularity, not function granularity, but without this restriction it would be possible for a module to "forget" about features if all the functions that used them were inlined. Requested in PR46812. Differential Revision: https://reviews.llvm.org/D85494
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
//==- WebAssemblyTargetTransformInfo.h - WebAssembly-specific TTI -*- 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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/// \file
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/// This file a TargetTransformInfo::Concept conforming object specific
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/// to the WebAssembly target machine.
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///
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/// It uses the target's detailed information to provide more precise answers to
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/// certain TTI queries, while letting the target independent and default TTI
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/// implementations handle the rest.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETTRANSFORMINFO_H
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#include "WebAssemblyTargetMachine.h"
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#include "llvm/CodeGen/BasicTTIImpl.h"
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#include <algorithm>
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namespace llvm {
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class WebAssemblyTTIImpl final : public BasicTTIImplBase<WebAssemblyTTIImpl> {
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typedef BasicTTIImplBase<WebAssemblyTTIImpl> BaseT;
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typedef TargetTransformInfo TTI;
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friend BaseT;
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const WebAssemblySubtarget *ST;
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const WebAssemblyTargetLowering *TLI;
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const WebAssemblySubtarget *getST() const { return ST; }
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const WebAssemblyTargetLowering *getTLI() const { return TLI; }
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public:
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WebAssemblyTTIImpl(const WebAssemblyTargetMachine *TM, const Function &F)
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: BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
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TLI(ST->getTargetLowering()) {}
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/// \name Scalar TTI Implementations
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/// @{
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// TODO: Implement more Scalar TTI for WebAssembly
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TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const;
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/// @}
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/// \name Vector TTI Implementations
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/// @{
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unsigned getNumberOfRegisters(unsigned ClassID) const;
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unsigned getRegisterBitWidth(bool Vector) const;
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unsigned getArithmeticInstrCost(
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unsigned Opcode, Type *Ty,
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TTI::TargetCostKind CostKind = TTI::TCK_SizeAndLatency,
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TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
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TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
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TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
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TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
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ArrayRef<const Value *> Args = ArrayRef<const Value *>(),
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const Instruction *CxtI = nullptr);
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unsigned getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
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/// @}
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bool areInlineCompatible(const Function *Caller,
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const Function *Callee) const;
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};
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} // end namespace llvm
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#endif
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