forked from OSchip/llvm-project
350 lines
14 KiB
TableGen
350 lines
14 KiB
TableGen
// WebAssemblyInstrInfo.td-Describe the WebAssembly Instructions-*- tablegen -*-
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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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/// WebAssembly Instruction definitions.
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///
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// WebAssembly Instruction Predicate Definitions.
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//===----------------------------------------------------------------------===//
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def IsPIC : Predicate<"TM.isPositionIndependent()">;
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def IsNotPIC : Predicate<"!TM.isPositionIndependent()">;
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def HasAddr32 : Predicate<"!Subtarget->hasAddr64()">;
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def HasAddr64 : Predicate<"Subtarget->hasAddr64()">;
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def HasSIMD128 :
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Predicate<"Subtarget->hasSIMD128()">,
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AssemblerPredicate<"FeatureSIMD128", "simd128">;
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def HasUnimplementedSIMD128 :
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Predicate<"Subtarget->hasUnimplementedSIMD128()">,
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AssemblerPredicate<"FeatureUnimplementedSIMD128", "unimplemented-simd128">;
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def HasAtomics :
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Predicate<"Subtarget->hasAtomics()">,
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AssemblerPredicate<"FeatureAtomics", "atomics">;
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def HasMultivalue :
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Predicate<"Subtarget->hasMultivalue()">,
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AssemblerPredicate<"FeatureMultivalue", "multivalue">;
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def HasNontrappingFPToInt :
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Predicate<"Subtarget->hasNontrappingFPToInt()">,
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AssemblerPredicate<"FeatureNontrappingFPToInt", "nontrapping-fptoint">;
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def NotHasNontrappingFPToInt :
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Predicate<"!Subtarget->hasNontrappingFPToInt()">,
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AssemblerPredicate<"!FeatureNontrappingFPToInt", "nontrapping-fptoint">;
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def HasSignExt :
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Predicate<"Subtarget->hasSignExt()">,
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AssemblerPredicate<"FeatureSignExt", "sign-ext">;
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def HasTailCall :
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Predicate<"Subtarget->hasTailCall()">,
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AssemblerPredicate<"FeatureTailCall", "tail-call">;
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def HasExceptionHandling :
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Predicate<"Subtarget->hasExceptionHandling()">,
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AssemblerPredicate<"FeatureExceptionHandling", "exception-handling">;
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def HasBulkMemory :
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Predicate<"Subtarget->hasBulkMemory()">,
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AssemblerPredicate<"FeatureBulkMemory", "bulk-memory">;
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//===----------------------------------------------------------------------===//
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// WebAssembly-specific DAG Node Types.
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//===----------------------------------------------------------------------===//
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def SDT_WebAssemblyCallSeqStart : SDCallSeqStart<[SDTCisVT<0, iPTR>,
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SDTCisVT<1, iPTR>]>;
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def SDT_WebAssemblyCallSeqEnd :
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SDCallSeqEnd<[SDTCisVT<0, iPTR>, SDTCisVT<1, iPTR>]>;
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def SDT_WebAssemblyCall0 : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
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def SDT_WebAssemblyCall1 : SDTypeProfile<1, -1, [SDTCisPtrTy<1>]>;
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def SDT_WebAssemblyBrTable : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
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def SDT_WebAssemblyArgument : SDTypeProfile<1, 1, [SDTCisVT<1, i32>]>;
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def SDT_WebAssemblyReturn : SDTypeProfile<0, -1, []>;
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def SDT_WebAssemblyWrapper : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>,
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SDTCisPtrTy<0>]>;
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def SDT_WebAssemblyWrapperPIC : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>,
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SDTCisPtrTy<0>]>;
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def SDT_WebAssemblyThrow : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
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//===----------------------------------------------------------------------===//
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// WebAssembly-specific DAG Nodes.
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//===----------------------------------------------------------------------===//
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def WebAssemblycallseq_start :
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SDNode<"ISD::CALLSEQ_START", SDT_WebAssemblyCallSeqStart,
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[SDNPHasChain, SDNPOutGlue]>;
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def WebAssemblycallseq_end :
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SDNode<"ISD::CALLSEQ_END", SDT_WebAssemblyCallSeqEnd,
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[SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
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def WebAssemblycall0 : SDNode<"WebAssemblyISD::CALL0",
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SDT_WebAssemblyCall0,
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[SDNPHasChain, SDNPVariadic]>;
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def WebAssemblycall1 : SDNode<"WebAssemblyISD::CALL1",
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SDT_WebAssemblyCall1,
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[SDNPHasChain, SDNPVariadic]>;
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def WebAssemblyretcall : SDNode<"WebAssemblyISD::RET_CALL",
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SDT_WebAssemblyCall0,
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[SDNPHasChain, SDNPVariadic]>;
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def WebAssemblybr_table : SDNode<"WebAssemblyISD::BR_TABLE",
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SDT_WebAssemblyBrTable,
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[SDNPHasChain, SDNPVariadic]>;
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def WebAssemblyargument : SDNode<"WebAssemblyISD::ARGUMENT",
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SDT_WebAssemblyArgument>;
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def WebAssemblyreturn : SDNode<"WebAssemblyISD::RETURN",
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SDT_WebAssemblyReturn, [SDNPHasChain]>;
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def WebAssemblywrapper : SDNode<"WebAssemblyISD::Wrapper",
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SDT_WebAssemblyWrapper>;
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def WebAssemblywrapperPIC : SDNode<"WebAssemblyISD::WrapperPIC",
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SDT_WebAssemblyWrapperPIC>;
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def WebAssemblythrow : SDNode<"WebAssemblyISD::THROW", SDT_WebAssemblyThrow,
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[SDNPHasChain, SDNPVariadic]>;
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//===----------------------------------------------------------------------===//
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// WebAssembly-specific Operands.
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//===----------------------------------------------------------------------===//
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// Default Operand has AsmOperandClass "Imm" which is for integers (and
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// symbols), so specialize one for floats:
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def FPImmAsmOperand : AsmOperandClass {
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let Name = "FPImm";
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let PredicateMethod = "isFPImm";
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}
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class FPOperand<ValueType ty> : Operand<ty> {
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AsmOperandClass ParserMatchClass = FPImmAsmOperand;
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}
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let OperandNamespace = "WebAssembly" in {
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let OperandType = "OPERAND_BASIC_BLOCK" in
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def bb_op : Operand<OtherVT>;
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let OperandType = "OPERAND_LOCAL" in
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def local_op : Operand<i32>;
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let OperandType = "OPERAND_GLOBAL" in
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def global_op : Operand<i32>;
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let OperandType = "OPERAND_I32IMM" in
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def i32imm_op : Operand<i32>;
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let OperandType = "OPERAND_I64IMM" in
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def i64imm_op : Operand<i64>;
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let OperandType = "OPERAND_F32IMM" in
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def f32imm_op : FPOperand<f32>;
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let OperandType = "OPERAND_F64IMM" in
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def f64imm_op : FPOperand<f64>;
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let OperandType = "OPERAND_VEC_I8IMM" in
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def vec_i8imm_op : Operand<i32>;
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let OperandType = "OPERAND_VEC_I16IMM" in
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def vec_i16imm_op : Operand<i32>;
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let OperandType = "OPERAND_VEC_I32IMM" in
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def vec_i32imm_op : Operand<i32>;
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let OperandType = "OPERAND_VEC_I64IMM" in
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def vec_i64imm_op : Operand<i64>;
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let OperandType = "OPERAND_FUNCTION32" in
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def function32_op : Operand<i32>;
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let OperandType = "OPERAND_OFFSET32" in
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def offset32_op : Operand<i32>;
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let OperandType = "OPERAND_P2ALIGN" in {
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def P2Align : Operand<i32> {
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let PrintMethod = "printWebAssemblyP2AlignOperand";
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}
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let OperandType = "OPERAND_EVENT" in
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def event_op : Operand<i32>;
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} // OperandType = "OPERAND_P2ALIGN"
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let OperandType = "OPERAND_SIGNATURE" in
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def Signature : Operand<i32> {
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let PrintMethod = "printWebAssemblySignatureOperand";
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}
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let OperandType = "OPERAND_TYPEINDEX" in
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def TypeIndex : Operand<i32>;
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} // OperandNamespace = "WebAssembly"
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//===----------------------------------------------------------------------===//
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// WebAssembly Register to Stack instruction mapping
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//===----------------------------------------------------------------------===//
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class StackRel;
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def getStackOpcode : InstrMapping {
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let FilterClass = "StackRel";
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let RowFields = ["BaseName"];
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let ColFields = ["StackBased"];
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let KeyCol = ["false"];
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let ValueCols = [["true"]];
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}
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//===----------------------------------------------------------------------===//
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// WebAssembly Instruction Format Definitions.
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//===----------------------------------------------------------------------===//
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include "WebAssemblyInstrFormats.td"
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//===----------------------------------------------------------------------===//
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// Additional instructions.
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//===----------------------------------------------------------------------===//
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multiclass ARGUMENT<WebAssemblyRegClass reg, ValueType vt> {
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let hasSideEffects = 1, isCodeGenOnly = 1, Defs = []<Register>,
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Uses = [ARGUMENTS] in
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defm ARGUMENT_#vt :
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I<(outs reg:$res), (ins i32imm:$argno), (outs), (ins i32imm:$argno),
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[(set (vt reg:$res), (WebAssemblyargument timm:$argno))]>;
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}
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defm "": ARGUMENT<I32, i32>;
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defm "": ARGUMENT<I64, i64>;
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defm "": ARGUMENT<F32, f32>;
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defm "": ARGUMENT<F64, f64>;
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defm "": ARGUMENT<EXNREF, exnref>;
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// local.get and local.set are not generated by instruction selection; they
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// are implied by virtual register uses and defs.
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multiclass LOCAL<WebAssemblyRegClass vt> {
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let hasSideEffects = 0 in {
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// COPY is not an actual instruction in wasm, but since we allow local.get and
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// local.set to be implicit during most of codegen, we can have a COPY which
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// is actually a no-op because all the work is done in the implied local.get
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// and local.set. COPYs are eliminated (and replaced with
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// local.get/local.set) in the ExplicitLocals pass.
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let isAsCheapAsAMove = 1, isCodeGenOnly = 1 in
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defm COPY_#vt : I<(outs vt:$res), (ins vt:$src), (outs), (ins), [],
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"local.copy\t$res, $src", "local.copy">;
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// TEE is similar to COPY, but writes two copies of its result. Typically
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// this would be used to stackify one result and write the other result to a
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// local.
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let isAsCheapAsAMove = 1, isCodeGenOnly = 1 in
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defm TEE_#vt : I<(outs vt:$res, vt:$also), (ins vt:$src), (outs), (ins), [],
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"local.tee\t$res, $also, $src", "local.tee">;
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// This is the actual local.get instruction in wasm. These are made explicit
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// by the ExplicitLocals pass. It has mayLoad because it reads from a wasm
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// local, which is a side effect not otherwise modeled in LLVM.
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let mayLoad = 1, isAsCheapAsAMove = 1 in
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defm LOCAL_GET_#vt : I<(outs vt:$res), (ins local_op:$local),
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(outs), (ins local_op:$local), [],
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"local.get\t$res, $local", "local.get\t$local", 0x20>;
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// This is the actual local.set instruction in wasm. These are made explicit
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// by the ExplicitLocals pass. It has mayStore because it writes to a wasm
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// local, which is a side effect not otherwise modeled in LLVM.
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let mayStore = 1, isAsCheapAsAMove = 1 in
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defm LOCAL_SET_#vt : I<(outs), (ins local_op:$local, vt:$src),
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(outs), (ins local_op:$local), [],
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"local.set\t$local, $src", "local.set\t$local", 0x21>;
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// This is the actual local.tee instruction in wasm. TEEs are turned into
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// LOCAL_TEEs by the ExplicitLocals pass. It has mayStore for the same reason
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// as LOCAL_SET.
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let mayStore = 1, isAsCheapAsAMove = 1 in
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defm LOCAL_TEE_#vt : I<(outs vt:$res), (ins local_op:$local, vt:$src),
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(outs), (ins local_op:$local), [],
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"local.tee\t$res, $local, $src", "local.tee\t$local",
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0x22>;
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// Unused values must be dropped in some contexts.
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defm DROP_#vt : I<(outs), (ins vt:$src), (outs), (ins), [],
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"drop\t$src", "drop", 0x1a>;
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let mayLoad = 1 in
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defm GLOBAL_GET_#vt : I<(outs vt:$res), (ins global_op:$local),
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(outs), (ins global_op:$local), [],
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"global.get\t$res, $local", "global.get\t$local",
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0x23>;
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let mayStore = 1 in
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defm GLOBAL_SET_#vt : I<(outs), (ins global_op:$local, vt:$src),
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(outs), (ins global_op:$local), [],
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"global.set\t$local, $src", "global.set\t$local",
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0x24>;
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} // hasSideEffects = 0
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}
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defm "" : LOCAL<I32>;
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defm "" : LOCAL<I64>;
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defm "" : LOCAL<F32>;
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defm "" : LOCAL<F64>;
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defm "" : LOCAL<V128>, Requires<[HasSIMD128]>;
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defm "" : LOCAL<EXNREF>, Requires<[HasExceptionHandling]>;
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let isMoveImm = 1, isAsCheapAsAMove = 1, isReMaterializable = 1 in {
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defm CONST_I32 : I<(outs I32:$res), (ins i32imm_op:$imm),
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(outs), (ins i32imm_op:$imm),
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[(set I32:$res, imm:$imm)],
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"i32.const\t$res, $imm", "i32.const\t$imm", 0x41>;
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defm CONST_I64 : I<(outs I64:$res), (ins i64imm_op:$imm),
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(outs), (ins i64imm_op:$imm),
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[(set I64:$res, imm:$imm)],
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"i64.const\t$res, $imm", "i64.const\t$imm", 0x42>;
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defm CONST_F32 : I<(outs F32:$res), (ins f32imm_op:$imm),
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(outs), (ins f32imm_op:$imm),
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[(set F32:$res, fpimm:$imm)],
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"f32.const\t$res, $imm", "f32.const\t$imm", 0x43>;
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defm CONST_F64 : I<(outs F64:$res), (ins f64imm_op:$imm),
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(outs), (ins f64imm_op:$imm),
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[(set F64:$res, fpimm:$imm)],
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"f64.const\t$res, $imm", "f64.const\t$imm", 0x44>;
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} // isMoveImm = 1, isAsCheapAsAMove = 1, isReMaterializable = 1
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def : Pat<(i32 (WebAssemblywrapper tglobaladdr:$addr)),
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(CONST_I32 tglobaladdr:$addr)>, Requires<[IsNotPIC]>;
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def : Pat<(i32 (WebAssemblywrapper tglobaladdr:$addr)),
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(GLOBAL_GET_I32 tglobaladdr:$addr)>, Requires<[IsPIC]>;
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def : Pat<(i32 (WebAssemblywrapperPIC tglobaladdr:$addr)),
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(CONST_I32 tglobaladdr:$addr)>, Requires<[IsPIC]>;
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def : Pat<(i32 (WebAssemblywrapper texternalsym:$addr)),
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(GLOBAL_GET_I32 texternalsym:$addr)>, Requires<[IsPIC]>;
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def : Pat<(i32 (WebAssemblywrapper texternalsym:$addr)),
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(CONST_I32 texternalsym:$addr)>, Requires<[IsNotPIC]>;
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def : Pat<(i32 (WebAssemblywrapper mcsym:$sym)), (CONST_I32 mcsym:$sym)>;
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def : Pat<(i64 (WebAssemblywrapper mcsym:$sym)), (CONST_I64 mcsym:$sym)>;
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//===----------------------------------------------------------------------===//
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// Additional sets of instructions.
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//===----------------------------------------------------------------------===//
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include "WebAssemblyInstrMemory.td"
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include "WebAssemblyInstrCall.td"
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include "WebAssemblyInstrControl.td"
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include "WebAssemblyInstrInteger.td"
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include "WebAssemblyInstrConv.td"
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include "WebAssemblyInstrFloat.td"
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include "WebAssemblyInstrAtomics.td"
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include "WebAssemblyInstrSIMD.td"
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include "WebAssemblyInstrRef.td"
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include "WebAssemblyInstrBulkMemory.td"
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