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Diffstat (limited to 'js/src/jit/loong64/CodeGenerator-loong64.h')
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1 files changed, 209 insertions, 0 deletions
diff --git a/js/src/jit/loong64/CodeGenerator-loong64.h b/js/src/jit/loong64/CodeGenerator-loong64.h new file mode 100644 index 0000000000..5c75f65cd2 --- /dev/null +++ b/js/src/jit/loong64/CodeGenerator-loong64.h @@ -0,0 +1,209 @@ +/* -*- 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_loong64_CodeGenerator_loong64_h +#define jit_loong64_CodeGenerator_loong64_h + +#include "jit/loong64/Assembler-loong64.h" +#include "jit/shared/CodeGenerator-shared.h" + +namespace js { +namespace jit { + +class CodeGeneratorLOONG64; +class OutOfLineBailout; +class OutOfLineTableSwitch; + +using OutOfLineWasmTruncateCheck = + OutOfLineWasmTruncateCheckBase<CodeGeneratorLOONG64>; + +class CodeGeneratorLOONG64 : public CodeGeneratorShared { + friend class MoveResolverLA; + + protected: + CodeGeneratorLOONG64(MIRGenerator* gen, LIRGraph* graph, + MacroAssembler* masm); + + NonAssertingLabel deoptLabel_; + + Operand ToOperand(const LAllocation& a); + Operand ToOperand(const LAllocation* a); + Operand ToOperand(const LDefinition* def); + +#ifdef JS_PUNBOX64 + Operand ToOperandOrRegister64(const LInt64Allocation input); +#else + Register64 ToOperandOrRegister64(const LInt64Allocation input); +#endif + + MoveOperand toMoveOperand(LAllocation a) const; + + template <typename T1, typename T2> + void bailoutCmp32(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + Label bail; + masm.branch32(c, lhs, rhs, &bail); + bailoutFrom(&bail, snapshot); + } + template <typename T1, typename T2> + void bailoutTest32(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + Label bail; + masm.branchTest32(c, lhs, rhs, &bail); + bailoutFrom(&bail, snapshot); + } + template <typename T1, typename T2> + void bailoutCmpPtr(Assembler::Condition c, T1 lhs, T2 rhs, + LSnapshot* snapshot) { + Label bail; + masm.branchPtr(c, lhs, rhs, &bail); + bailoutFrom(&bail, snapshot); + } + void bailoutTestPtr(Assembler::Condition c, Register lhs, Register rhs, + LSnapshot* snapshot) { + // TODO(loong64) Didn't use branchTestPtr due to '-Wundefined-inline'. + MOZ_ASSERT(c == Assembler::Zero || c == Assembler::NonZero || + c == Assembler::Signed || c == Assembler::NotSigned); + Label bail; + if (lhs == rhs) { + masm.ma_b(lhs, rhs, &bail, c); + } else { + ScratchRegisterScope scratch(masm); + masm.as_and(scratch, lhs, rhs); + masm.ma_b(scratch, scratch, &bail, c); + } + bailoutFrom(&bail, snapshot); + } + void bailoutIfFalseBool(Register reg, LSnapshot* snapshot) { + Label bail; + ScratchRegisterScope scratch(masm); + masm.ma_and(scratch, reg, Imm32(0xFF)); + masm.ma_b(scratch, scratch, &bail, Assembler::Zero); + bailoutFrom(&bail, snapshot); + } + + void bailoutFrom(Label* label, LSnapshot* snapshot); + void bailout(LSnapshot* snapshot); + + bool generateOutOfLineCode(); + + template <typename T> + void branchToBlock(Register lhs, T rhs, MBasicBlock* mir, + Assembler::Condition cond) { + masm.ma_b(lhs, rhs, skipTrivialBlocks(mir)->lir()->label(), cond); + } + void branchToBlock(Assembler::FloatFormat fmt, FloatRegister lhs, + FloatRegister rhs, MBasicBlock* mir, + Assembler::DoubleCondition cond); + + // Emits a branch that directs control flow to the true block if |cond| is + // true, and the false block if |cond| is false. + template <typename T> + void emitBranch(Register lhs, T rhs, Assembler::Condition cond, + MBasicBlock* mirTrue, MBasicBlock* mirFalse) { + if (isNextBlock(mirFalse->lir())) { + branchToBlock(lhs, rhs, mirTrue, cond); + } else { + branchToBlock(lhs, rhs, mirFalse, Assembler::InvertCondition(cond)); + jumpToBlock(mirTrue); + } + } + void testZeroEmitBranch(Assembler::Condition cond, Register reg, + MBasicBlock* ifTrue, MBasicBlock* ifFalse) { + emitBranch(reg, Imm32(0), cond, ifTrue, ifFalse); + } + + void emitTableSwitchDispatch(MTableSwitch* mir, Register index, + Register base); + + template <typename T> + void emitWasmLoad(T* ins); + template <typename T> + void emitWasmStore(T* ins); + + void generateInvalidateEpilogue(); + + // Generating a result. + template <typename S, typename T> + void atomicBinopToTypedIntArray(AtomicOp op, Scalar::Type arrayType, + const S& value, const T& mem, + Register flagTemp, Register outTemp, + Register valueTemp, Register offsetTemp, + Register maskTemp, AnyRegister output); + + // Generating no result. + template <typename S, typename T> + void atomicBinopToTypedIntArray(AtomicOp op, Scalar::Type arrayType, + const S& value, const T& mem, + Register flagTemp, Register valueTemp, + Register offsetTemp, Register maskTemp); + + public: + // Out of line visitors. + void visitOutOfLineBailout(OutOfLineBailout* ool); + void visitOutOfLineTableSwitch(OutOfLineTableSwitch* ool); + void visitOutOfLineWasmTruncateCheck(OutOfLineWasmTruncateCheck* ool); + + protected: + void testNullEmitBranch(Assembler::Condition cond, const ValueOperand& value, + MBasicBlock* ifTrue, MBasicBlock* ifFalse) { + MOZ_ASSERT(value.valueReg() != SecondScratchReg); + masm.splitTag(value.valueReg(), SecondScratchReg); + emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_NULL), cond, ifTrue, ifFalse); + } + void testUndefinedEmitBranch(Assembler::Condition cond, + const ValueOperand& value, MBasicBlock* ifTrue, + MBasicBlock* ifFalse) { + MOZ_ASSERT(value.valueReg() != SecondScratchReg); + masm.splitTag(value.valueReg(), SecondScratchReg); + emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_UNDEFINED), cond, ifTrue, + ifFalse); + } + void testObjectEmitBranch(Assembler::Condition cond, + const ValueOperand& value, MBasicBlock* ifTrue, + MBasicBlock* ifFalse) { + MOZ_ASSERT(value.valueReg() != SecondScratchReg); + masm.splitTag(value.valueReg(), SecondScratchReg); + emitBranch(SecondScratchReg, ImmTag(JSVAL_TAG_OBJECT), cond, ifTrue, + ifFalse); + } + + void emitBigIntDiv(LBigIntDiv* ins, Register dividend, Register divisor, + Register output, Label* fail); + void emitBigIntMod(LBigIntMod* ins, Register dividend, Register divisor, + Register output, Label* fail); + + template <typename T> + void emitWasmLoadI64(T* ins); + template <typename T> + void emitWasmStoreI64(T* ins); + + ValueOperand ToValue(LInstruction* ins, size_t pos); + ValueOperand ToTempValue(LInstruction* ins, size_t pos); + + // Functions for LTestVAndBranch. + void splitTagForTest(const ValueOperand& value, ScratchTagScope& tag); +}; + +typedef CodeGeneratorLOONG64 CodeGeneratorSpecific; + +// An out-of-line bailout thunk. +class OutOfLineBailout : public OutOfLineCodeBase<CodeGeneratorLOONG64> { + protected: + LSnapshot* snapshot_; + + public: + OutOfLineBailout(LSnapshot* snapshot) : snapshot_(snapshot) {} + + void accept(CodeGeneratorLOONG64* codegen) override; + + LSnapshot* snapshot() const { return snapshot_; } +}; + +} // namespace jit +} // namespace js + +#endif /* jit_loong64_CodeGenerator_loong64_h */ |