From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit/Lowering.h | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 js/src/jit/Lowering.h (limited to 'js/src/jit/Lowering.h') diff --git a/js/src/jit/Lowering.h b/js/src/jit/Lowering.h new file mode 100644 index 0000000000..d47f6e6345 --- /dev/null +++ b/js/src/jit/Lowering.h @@ -0,0 +1,94 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef jit_Lowering_h +#define jit_Lowering_h + +// This file declares the structures that are used for attaching LIR to a +// MIRGraph. + +#include "jit/LIR.h" +#if defined(JS_CODEGEN_X86) +# include "jit/x86/Lowering-x86.h" +#elif defined(JS_CODEGEN_X64) +# include "jit/x64/Lowering-x64.h" +#elif defined(JS_CODEGEN_ARM) +# include "jit/arm/Lowering-arm.h" +#elif defined(JS_CODEGEN_ARM64) +# include "jit/arm64/Lowering-arm64.h" +#elif defined(JS_CODEGEN_MIPS32) +# include "jit/mips32/Lowering-mips32.h" +#elif defined(JS_CODEGEN_MIPS64) +# include "jit/mips64/Lowering-mips64.h" +#elif defined(JS_CODEGEN_LOONG64) +# include "jit/loong64/Lowering-loong64.h" +#elif defined(JS_CODEGEN_RISCV64) +# include "jit/riscv64/Lowering-riscv64.h" +#elif defined(JS_CODEGEN_WASM32) +# include "jit/wasm32/Lowering-wasm32.h" +#elif defined(JS_CODEGEN_NONE) +# include "jit/none/Lowering-none.h" +#else +# error "Unknown architecture!" +#endif + +namespace js { +namespace jit { + +class LIRGenerator final : public LIRGeneratorSpecific { + void updateResumeState(MInstruction* ins); + void updateResumeState(MBasicBlock* block); + + // The maximum depth, for framesizeclass determination. + uint32_t maxargslots_; + + public: + LIRGenerator(MIRGenerator* gen, MIRGraph& graph, LIRGraph& lirGraph) + : LIRGeneratorSpecific(gen, graph, lirGraph), maxargslots_(0) {} + + [[nodiscard]] bool generate(); + + private: + LBoxAllocation useBoxFixedAtStart(MDefinition* mir, Register reg1, + Register reg2) { + return useBoxFixed(mir, reg1, reg2, /* useAtStart = */ true); + } + + LBoxAllocation useBoxFixedAtStart(MDefinition* mir, ValueOperand op); + LBoxAllocation useBoxAtStart(MDefinition* mir, + LUse::Policy policy = LUse::REGISTER); + + void lowerBitOp(JSOp op, MBinaryInstruction* ins); + void lowerShiftOp(JSOp op, MShiftInstruction* ins); + LInstructionHelper<1, 1, 0>* allocateAbs(MAbs* ins, LAllocation input); + bool definePhis(); + + template + [[nodiscard]] bool lowerCallArguments(T* call); + + friend class LIRGeneratorShared; + void visitInstructionDispatch(MInstruction* ins); + + void visitReturnImpl(MDefinition* def, bool isGenerator = false); + + [[nodiscard]] bool visitInstruction(MInstruction* ins); + [[nodiscard]] bool visitBlock(MBasicBlock* block); + +#define MIR_OP(op) void visit##op(M##op* ins); + MIR_OPCODE_LIST(MIR_OP) +#undef MIR_OP + + template + void visitWasmCall(MWasmCallT ins); + + WasmRefIsSubtypeDefs useWasmRefIsSubtype(wasm::RefType destType, + MDefinition* superSTV); +}; + +} // namespace jit +} // namespace js + +#endif /* jit_Lowering_h */ -- cgit v1.2.3