1703 lines
62 KiB
C#
1703 lines
62 KiB
C#
using ARMeilleure.CodeGen.Optimizations;
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using ARMeilleure.CodeGen.RegisterAllocators;
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using ARMeilleure.CodeGen.Unwinding;
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using ARMeilleure.Common;
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using ARMeilleure.Diagnostics;
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Translation;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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namespace ARMeilleure.CodeGen.X86
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{
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static class CodeGenerator
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{
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private const int PageSize = 0x1000;
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private const int StackGuardSize = 0x2000;
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private static Action<CodeGenContext, Operation>[] _instTable;
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static CodeGenerator()
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{
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_instTable = new Action<CodeGenContext, Operation>[EnumUtils.GetCount(typeof(Instruction))];
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Add(Instruction.Add, GenerateAdd);
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Add(Instruction.BitwiseAnd, GenerateBitwiseAnd);
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Add(Instruction.BitwiseExclusiveOr, GenerateBitwiseExclusiveOr);
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Add(Instruction.BitwiseNot, GenerateBitwiseNot);
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Add(Instruction.BitwiseOr, GenerateBitwiseOr);
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Add(Instruction.Branch, GenerateBranch);
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Add(Instruction.BranchIfFalse, GenerateBranchIfFalse);
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Add(Instruction.BranchIfTrue, GenerateBranchIfTrue);
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Add(Instruction.ByteSwap, GenerateByteSwap);
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Add(Instruction.Call, GenerateCall);
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Add(Instruction.Clobber, GenerateClobber);
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Add(Instruction.CompareAndSwap128, GenerateCompareAndSwap128);
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Add(Instruction.CompareEqual, GenerateCompareEqual);
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Add(Instruction.CompareGreater, GenerateCompareGreater);
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Add(Instruction.CompareGreaterOrEqual, GenerateCompareGreaterOrEqual);
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Add(Instruction.CompareGreaterOrEqualUI, GenerateCompareGreaterOrEqualUI);
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Add(Instruction.CompareGreaterUI, GenerateCompareGreaterUI);
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Add(Instruction.CompareLess, GenerateCompareLess);
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Add(Instruction.CompareLessOrEqual, GenerateCompareLessOrEqual);
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Add(Instruction.CompareLessOrEqualUI, GenerateCompareLessOrEqualUI);
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Add(Instruction.CompareLessUI, GenerateCompareLessUI);
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Add(Instruction.CompareNotEqual, GenerateCompareNotEqual);
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Add(Instruction.ConditionalSelect, GenerateConditionalSelect);
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Add(Instruction.ConvertI64ToI32, GenerateConvertI64ToI32);
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Add(Instruction.ConvertToFP, GenerateConvertToFP);
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Add(Instruction.Copy, GenerateCopy);
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Add(Instruction.CountLeadingZeros, GenerateCountLeadingZeros);
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Add(Instruction.CpuId, GenerateCpuId);
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Add(Instruction.Divide, GenerateDivide);
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Add(Instruction.DivideUI, GenerateDivideUI);
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Add(Instruction.Fill, GenerateFill);
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Add(Instruction.Load, GenerateLoad);
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Add(Instruction.Load16, GenerateLoad16);
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Add(Instruction.Load8, GenerateLoad8);
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Add(Instruction.Multiply, GenerateMultiply);
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Add(Instruction.Multiply64HighSI, GenerateMultiply64HighSI);
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Add(Instruction.Multiply64HighUI, GenerateMultiply64HighUI);
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Add(Instruction.Negate, GenerateNegate);
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Add(Instruction.Return, GenerateReturn);
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Add(Instruction.RotateRight, GenerateRotateRight);
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Add(Instruction.ShiftLeft, GenerateShiftLeft);
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Add(Instruction.ShiftRightSI, GenerateShiftRightSI);
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Add(Instruction.ShiftRightUI, GenerateShiftRightUI);
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Add(Instruction.SignExtend16, GenerateSignExtend16);
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Add(Instruction.SignExtend32, GenerateSignExtend32);
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Add(Instruction.SignExtend8, GenerateSignExtend8);
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Add(Instruction.Spill, GenerateSpill);
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Add(Instruction.SpillArg, GenerateSpillArg);
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Add(Instruction.StackAlloc, GenerateStackAlloc);
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Add(Instruction.Store, GenerateStore);
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Add(Instruction.Store16, GenerateStore16);
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Add(Instruction.Store8, GenerateStore8);
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Add(Instruction.Subtract, GenerateSubtract);
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Add(Instruction.VectorCreateScalar, GenerateVectorCreateScalar);
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Add(Instruction.VectorExtract, GenerateVectorExtract);
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Add(Instruction.VectorExtract16, GenerateVectorExtract16);
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Add(Instruction.VectorExtract8, GenerateVectorExtract8);
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Add(Instruction.VectorInsert, GenerateVectorInsert);
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Add(Instruction.VectorInsert16, GenerateVectorInsert16);
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Add(Instruction.VectorInsert8, GenerateVectorInsert8);
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Add(Instruction.VectorOne, GenerateVectorOne);
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Add(Instruction.VectorZero, GenerateVectorZero);
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Add(Instruction.VectorZeroUpper64, GenerateVectorZeroUpper64);
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Add(Instruction.VectorZeroUpper96, GenerateVectorZeroUpper96);
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Add(Instruction.ZeroExtend16, GenerateZeroExtend16);
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Add(Instruction.ZeroExtend32, GenerateZeroExtend32);
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Add(Instruction.ZeroExtend8, GenerateZeroExtend8);
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}
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private static void Add(Instruction inst, Action<CodeGenContext, Operation> func)
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{
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_instTable[(int)inst] = func;
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}
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public static CompiledFunction Generate(CompilerContext cctx)
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{
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ControlFlowGraph cfg = cctx.Cfg;
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Logger.StartPass(PassName.Optimization);
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if ((cctx.Options & CompilerOptions.SsaForm) != 0 &&
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(cctx.Options & CompilerOptions.Optimize) != 0)
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{
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Optimizer.RunPass(cfg);
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}
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Logger.EndPass(PassName.Optimization, cfg);
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Logger.StartPass(PassName.PreAllocation);
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StackAllocator stackAlloc = new StackAllocator();
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PreAllocator.RunPass(cctx, stackAlloc, out int maxCallArgs);
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Logger.EndPass(PassName.PreAllocation, cfg);
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Logger.StartPass(PassName.RegisterAllocation);
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if ((cctx.Options & CompilerOptions.SsaForm) != 0)
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{
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Ssa.Deconstruct(cfg);
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}
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IRegisterAllocator regAlloc;
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if ((cctx.Options & CompilerOptions.Lsra) != 0)
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{
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regAlloc = new LinearScanAllocator();
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}
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else
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{
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regAlloc = new HybridAllocator();
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}
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RegisterMasks regMasks = new RegisterMasks(
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CallingConvention.GetIntAvailableRegisters(),
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CallingConvention.GetVecAvailableRegisters(),
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CallingConvention.GetIntCallerSavedRegisters(),
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CallingConvention.GetVecCallerSavedRegisters(),
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CallingConvention.GetIntCalleeSavedRegisters(),
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CallingConvention.GetVecCalleeSavedRegisters());
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AllocationResult allocResult = regAlloc.RunPass(cfg, stackAlloc, regMasks);
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Logger.EndPass(PassName.RegisterAllocation, cfg);
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Logger.StartPass(PassName.CodeGeneration);
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using (MemoryStream stream = new MemoryStream())
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{
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CodeGenContext context = new CodeGenContext(stream, allocResult, maxCallArgs, cfg.Blocks.Count);
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UnwindInfo unwindInfo = WritePrologue(context);
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foreach (BasicBlock block in cfg.Blocks)
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{
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context.EnterBlock(block);
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foreach (Node node in block.Operations)
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{
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if (node is Operation operation)
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{
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GenerateOperation(context, operation);
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}
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}
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}
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Logger.EndPass(PassName.CodeGeneration);
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return new CompiledFunction(context.GetCode(), unwindInfo);
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}
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}
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private static void GenerateOperation(CodeGenContext context, Operation operation)
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{
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if (operation.Instruction == Instruction.Extended)
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{
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IntrinsicOperation intrinOp = (IntrinsicOperation)operation;
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IntrinsicInfo info = IntrinsicTable.GetInfo(intrinOp.Intrinsic);
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switch (info.Type)
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{
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case IntrinsicType.Comis_:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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switch (intrinOp.Intrinsic)
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{
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case Intrinsic.X86Comisdeq:
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context.Assembler.Comisd(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.Equal);
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break;
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case Intrinsic.X86Comisdge:
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context.Assembler.Comisd(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.AboveOrEqual);
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break;
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case Intrinsic.X86Comisdlt:
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context.Assembler.Comisd(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.Below);
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break;
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case Intrinsic.X86Comisseq:
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context.Assembler.Comiss(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.Equal);
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break;
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case Intrinsic.X86Comissge:
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context.Assembler.Comiss(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.AboveOrEqual);
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break;
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case Intrinsic.X86Comisslt:
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context.Assembler.Comiss(src1, src2);
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context.Assembler.Setcc(dest, X86Condition.Below);
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break;
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}
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context.Assembler.Movzx8(dest, dest, OperandType.I32);
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break;
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}
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case IntrinsicType.PopCount:
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{
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Operand dest = operation.Destination;
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Operand source = operation.GetSource(0);
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EnsureSameType(dest, source);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.Popcnt(dest, source, dest.Type);
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break;
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}
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case IntrinsicType.Unary:
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{
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Operand dest = operation.Destination;
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Operand source = operation.GetSource(0);
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EnsureSameType(dest, source);
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Debug.Assert(!dest.Type.IsInteger());
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context.Assembler.WriteInstruction(info.Inst, dest, source);
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break;
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}
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case IntrinsicType.UnaryToGpr:
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{
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Operand dest = operation.Destination;
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Operand source = operation.GetSource(0);
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Debug.Assert(dest.Type.IsInteger() && !source.Type.IsInteger());
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if (intrinOp.Intrinsic == Intrinsic.X86Cvtsi2si)
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{
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if (dest.Type == OperandType.I32)
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{
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context.Assembler.Movd(dest, source); // int _mm_cvtsi128_si32(__m128i a)
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}
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else /* if (dest.Type == OperandType.I64) */
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{
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context.Assembler.Movq(dest, source); // __int64 _mm_cvtsi128_si64(__m128i a)
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}
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}
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else
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{
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context.Assembler.WriteInstruction(info.Inst, dest, source, dest.Type);
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}
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break;
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}
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case IntrinsicType.Binary:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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EnsureSameType(dest, src1);
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if (!HardwareCapabilities.SupportsVexEncoding)
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{
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EnsureSameReg(dest, src1);
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}
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Debug.Assert(!dest.Type.IsInteger());
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Debug.Assert(!src2.Type.IsInteger() || src2.Kind == OperandKind.Constant);
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context.Assembler.WriteInstruction(info.Inst, dest, src1, src2);
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break;
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}
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case IntrinsicType.BinaryGpr:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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EnsureSameType(dest, src1);
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if (!HardwareCapabilities.SupportsVexEncoding)
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{
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EnsureSameReg(dest, src1);
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}
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Debug.Assert(!dest.Type.IsInteger() && src2.Type.IsInteger());
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context.Assembler.WriteInstruction(info.Inst, dest, src1, src2, src2.Type);
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break;
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}
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case IntrinsicType.BinaryImm:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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EnsureSameType(dest, src1);
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if (!HardwareCapabilities.SupportsVexEncoding)
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{
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EnsureSameReg(dest, src1);
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}
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Debug.Assert(!dest.Type.IsInteger() && src2.Kind == OperandKind.Constant);
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context.Assembler.WriteInstruction(info.Inst, dest, src1, src2.AsByte());
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break;
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}
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case IntrinsicType.Ternary:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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Operand src3 = operation.GetSource(2);
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EnsureSameType(dest, src1, src2, src3);
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Debug.Assert(!dest.Type.IsInteger());
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if (info.Inst == X86Instruction.Blendvpd && HardwareCapabilities.SupportsVexEncoding)
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{
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context.Assembler.WriteInstruction(X86Instruction.Vblendvpd, dest, src1, src2, src3);
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}
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else if (info.Inst == X86Instruction.Blendvps && HardwareCapabilities.SupportsVexEncoding)
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{
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context.Assembler.WriteInstruction(X86Instruction.Vblendvps, dest, src1, src2, src3);
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}
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else if (info.Inst == X86Instruction.Pblendvb && HardwareCapabilities.SupportsVexEncoding)
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{
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context.Assembler.WriteInstruction(X86Instruction.Vpblendvb, dest, src1, src2, src3);
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}
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else
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{
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EnsureSameReg(dest, src1);
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Debug.Assert(src3.GetRegister().Index == 0);
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context.Assembler.WriteInstruction(info.Inst, dest, src1, src2);
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}
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break;
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}
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case IntrinsicType.TernaryImm:
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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Operand src3 = operation.GetSource(2);
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EnsureSameType(dest, src1, src2);
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if (!HardwareCapabilities.SupportsVexEncoding)
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{
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EnsureSameReg(dest, src1);
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}
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Debug.Assert(!dest.Type.IsInteger() && src3.Kind == OperandKind.Constant);
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context.Assembler.WriteInstruction(info.Inst, dest, src1, src2, src3.AsByte());
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break;
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}
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}
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}
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else
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{
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Action<CodeGenContext, Operation> func = _instTable[(int)operation.Instruction];
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if (func != null)
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{
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func(context, operation);
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}
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else
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{
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throw new ArgumentException($"Invalid instruction \"{operation.Instruction}\".");
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}
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}
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}
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private static void GenerateAdd(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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ValidateBinOp(dest, src1, src2);
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if (dest.Type.IsInteger())
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{
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context.Assembler.Add(dest, src2, dest.Type);
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}
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else if (dest.Type == OperandType.FP32)
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{
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context.Assembler.Addss(dest, src1, src2);
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}
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else /* if (dest.Type == OperandType.FP64) */
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{
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context.Assembler.Addsd(dest, src1, src2);
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}
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}
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private static void GenerateBitwiseAnd(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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ValidateBinOp(dest, src1, src2);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.And(dest, src2, dest.Type);
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}
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private static void GenerateBitwiseExclusiveOr(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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ValidateBinOp(dest, src1, src2);
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if (dest.Type.IsInteger())
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{
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context.Assembler.Xor(dest, src2, dest.Type);
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}
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else
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{
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context.Assembler.Xorps(dest, src1, src2);
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}
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}
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private static void GenerateBitwiseNot(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand source = operation.GetSource(0);
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ValidateUnOp(dest, source);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.Not(dest);
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}
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private static void GenerateBitwiseOr(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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ValidateBinOp(dest, src1, src2);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.Or(dest, src2, dest.Type);
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}
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private static void GenerateBranch(CodeGenContext context, Operation operation)
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{
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context.JumpTo(context.CurrBlock.Branch);
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}
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private static void GenerateBranchIfFalse(CodeGenContext context, Operation operation)
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{
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Operand source = operation.GetSource(0);
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context.Assembler.Test(source, source, source.Type);
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context.JumpTo(X86Condition.Equal, context.CurrBlock.Branch);
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}
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private static void GenerateBranchIfTrue(CodeGenContext context, Operation operation)
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{
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Operand source = operation.GetSource(0);
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context.Assembler.Test(source, source, source.Type);
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context.JumpTo(X86Condition.NotEqual, context.CurrBlock.Branch);
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}
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private static void GenerateByteSwap(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand source = operation.GetSource(0);
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|
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ValidateUnOp(dest, source);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.Bswap(dest);
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}
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private static void GenerateCall(CodeGenContext context, Operation operation)
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{
|
|
context.Assembler.Call(operation.GetSource(0));
|
|
}
|
|
|
|
private static void GenerateClobber(CodeGenContext context, Operation operation)
|
|
{
|
|
// This is only used to indicate that a register is clobbered to the
|
|
// register allocator, we don't need to produce any code.
|
|
}
|
|
|
|
private static void GenerateCompareAndSwap128(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand source = operation.GetSource(0);
|
|
|
|
MemoryOperand memOp = new MemoryOperand(OperandType.I64, source);
|
|
|
|
context.Assembler.Cmpxchg16b(memOp);
|
|
}
|
|
|
|
private static void GenerateCompareEqual(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.Equal);
|
|
}
|
|
|
|
private static void GenerateCompareGreater(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.Greater);
|
|
}
|
|
|
|
private static void GenerateCompareGreaterOrEqual(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.GreaterOrEqual);
|
|
}
|
|
|
|
private static void GenerateCompareGreaterOrEqualUI(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.AboveOrEqual);
|
|
}
|
|
|
|
private static void GenerateCompareGreaterUI(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.Above);
|
|
}
|
|
|
|
private static void GenerateCompareLess(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.Less);
|
|
}
|
|
|
|
private static void GenerateCompareLessOrEqual(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.LessOrEqual);
|
|
}
|
|
|
|
private static void GenerateCompareLessOrEqualUI(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.BelowOrEqual);
|
|
}
|
|
|
|
private static void GenerateCompareLessUI(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.Below);
|
|
}
|
|
|
|
private static void GenerateCompareNotEqual(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateCompare(context, operation, X86Condition.NotEqual);
|
|
}
|
|
|
|
private static void GenerateCompare(CodeGenContext context, Operation operation, X86Condition condition)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
EnsureSameType(src1, src2);
|
|
|
|
Debug.Assert(dest.Type == OperandType.I32);
|
|
|
|
context.Assembler.Cmp(src1, src2, src1.Type);
|
|
context.Assembler.Setcc(dest, condition);
|
|
context.Assembler.Movzx8(dest, dest, OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateConditionalSelect(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
Operand src3 = operation.GetSource(2);
|
|
|
|
EnsureSameReg (dest, src3);
|
|
EnsureSameType(dest, src2, src3);
|
|
|
|
Debug.Assert(dest.Type.IsInteger());
|
|
Debug.Assert(src1.Type == OperandType.I32);
|
|
|
|
context.Assembler.Test (src1, src1, src1.Type);
|
|
context.Assembler.Cmovcc(dest, src2, dest.Type, X86Condition.NotEqual);
|
|
}
|
|
|
|
private static void GenerateConvertI64ToI32(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type == OperandType.I32 && source.Type == OperandType.I64);
|
|
|
|
context.Assembler.Mov(dest, source, OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateConvertToFP(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type == OperandType.FP32 || dest.Type == OperandType.FP64);
|
|
|
|
if (dest.Type == OperandType.FP32)
|
|
{
|
|
Debug.Assert(source.Type.IsInteger() || source.Type == OperandType.FP64);
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
context.Assembler.Xorps (dest, dest, dest);
|
|
context.Assembler.Cvtsi2ss(dest, dest, source, source.Type);
|
|
}
|
|
else /* if (source.Type == OperandType.FP64) */
|
|
{
|
|
context.Assembler.Cvtsd2ss(dest, dest, source);
|
|
|
|
GenerateZeroUpper96(context, dest, dest);
|
|
}
|
|
}
|
|
else /* if (dest.Type == OperandType.FP64) */
|
|
{
|
|
Debug.Assert(source.Type.IsInteger() || source.Type == OperandType.FP32);
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
context.Assembler.Xorps (dest, dest, dest);
|
|
context.Assembler.Cvtsi2sd(dest, dest, source, source.Type);
|
|
}
|
|
else /* if (source.Type == OperandType.FP32) */
|
|
{
|
|
context.Assembler.Cvtss2sd(dest, dest, source);
|
|
|
|
GenerateZeroUpper64(context, dest, dest);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateCopy(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
EnsureSameType(dest, source);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() || source.Kind != OperandKind.Constant);
|
|
|
|
// Moves to the same register are useless.
|
|
if (dest.Kind == source.Kind && dest.Value == source.Value)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (dest.Kind == OperandKind.Register &&
|
|
source.Kind == OperandKind.Constant && source.Value == 0)
|
|
{
|
|
// Assemble "mov reg, 0" as "xor reg, reg" as the later is more efficient.
|
|
context.Assembler.Xor(dest, dest, OperandType.I32);
|
|
}
|
|
else if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Mov(dest, source, dest.Type);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movdqu(dest, source);
|
|
}
|
|
}
|
|
|
|
private static void GenerateCountLeadingZeros(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
EnsureSameType(dest, source);
|
|
|
|
Debug.Assert(dest.Type.IsInteger());
|
|
|
|
context.Assembler.Bsr(dest, source, dest.Type);
|
|
|
|
int operandSize = dest.Type == OperandType.I32 ? 32 : 64;
|
|
int operandMask = operandSize - 1;
|
|
|
|
// When the input operand is 0, the result is undefined, however the
|
|
// ZF flag is set. We are supposed to return the operand size on that
|
|
// case. So, add an additional jump to handle that case, by moving the
|
|
// operand size constant to the destination register.
|
|
context.JumpToNear(X86Condition.NotEqual);
|
|
|
|
context.Assembler.Mov(dest, new Operand(operandSize | operandMask), OperandType.I32);
|
|
|
|
context.JumpHere();
|
|
|
|
// BSR returns the zero based index of the last bit set on the operand,
|
|
// starting from the least significant bit. However we are supposed to
|
|
// return the number of 0 bits on the high end. So, we invert the result
|
|
// of the BSR using XOR to get the correct value.
|
|
context.Assembler.Xor(dest, new Operand(operandMask), OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateCpuId(CodeGenContext context, Operation operation)
|
|
{
|
|
context.Assembler.Cpuid();
|
|
}
|
|
|
|
private static void GenerateDivide(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand dividend = operation.GetSource(0);
|
|
Operand divisor = operation.GetSource(1);
|
|
|
|
if (!dest.Type.IsInteger())
|
|
{
|
|
ValidateBinOp(dest, dividend, divisor);
|
|
}
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
divisor = operation.GetSource(2);
|
|
|
|
EnsureSameType(dest, divisor);
|
|
|
|
if (divisor.Type == OperandType.I32)
|
|
{
|
|
context.Assembler.Cdq();
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Cqo();
|
|
}
|
|
|
|
context.Assembler.Idiv(divisor);
|
|
}
|
|
else if (dest.Type == OperandType.FP32)
|
|
{
|
|
context.Assembler.Divss(dest, dividend, divisor);
|
|
}
|
|
else /* if (dest.Type == OperandType.FP64) */
|
|
{
|
|
context.Assembler.Divsd(dest, dividend, divisor);
|
|
}
|
|
}
|
|
|
|
private static void GenerateDivideUI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand divisor = operation.GetSource(2);
|
|
|
|
Operand rdx = Register(X86Register.Rdx);
|
|
|
|
Debug.Assert(divisor.Type.IsInteger());
|
|
|
|
context.Assembler.Xor(rdx, rdx, OperandType.I32);
|
|
context.Assembler.Div(divisor);
|
|
}
|
|
|
|
private static void GenerateFill(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand offset = operation.GetSource(0);
|
|
|
|
Debug.Assert(offset.Kind == OperandKind.Constant);
|
|
|
|
int offs = offset.AsInt32() + context.CallArgsRegionSize;
|
|
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
|
|
MemoryOperand memOp = new MemoryOperand(dest.Type, rsp, null, Multiplier.x1, offs);
|
|
|
|
GenerateLoad(context, memOp, dest);
|
|
}
|
|
|
|
private static void GenerateLoad(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
GenerateLoad(context, address, value);
|
|
}
|
|
|
|
private static void GenerateLoad16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.Movzx16(value, address, value.Type);
|
|
}
|
|
|
|
private static void GenerateLoad8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.Movzx8(value, address, value.Type);
|
|
}
|
|
|
|
private static void GenerateMultiply(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
if (src2.Kind != OperandKind.Constant)
|
|
{
|
|
EnsureSameReg(dest, src1);
|
|
}
|
|
|
|
EnsureSameType(dest, src1, src2);
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
if (src2.Kind == OperandKind.Constant)
|
|
{
|
|
context.Assembler.Imul(dest, src1, src2, dest.Type);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Imul(dest, src2, dest.Type);
|
|
}
|
|
}
|
|
else if (dest.Type == OperandType.FP32)
|
|
{
|
|
context.Assembler.Mulss(dest, src1, src2);
|
|
}
|
|
else /* if (dest.Type == OperandType.FP64) */
|
|
{
|
|
context.Assembler.Mulsd(dest, src1, src2);
|
|
}
|
|
}
|
|
|
|
private static void GenerateMultiply64HighSI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand source = operation.GetSource(1);
|
|
|
|
Debug.Assert(source.Type == OperandType.I64);
|
|
|
|
context.Assembler.Imul(source);
|
|
}
|
|
|
|
private static void GenerateMultiply64HighUI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand source = operation.GetSource(1);
|
|
|
|
Debug.Assert(source.Type == OperandType.I64);
|
|
|
|
context.Assembler.Mul(source);
|
|
}
|
|
|
|
private static void GenerateNegate(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
ValidateUnOp(dest, source);
|
|
|
|
Debug.Assert(dest.Type.IsInteger());
|
|
|
|
context.Assembler.Neg(dest);
|
|
}
|
|
|
|
private static void GenerateReturn(CodeGenContext context, Operation operation)
|
|
{
|
|
WriteEpilogue(context);
|
|
|
|
context.Assembler.Return();
|
|
}
|
|
|
|
private static void GenerateRotateRight(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
ValidateShift(dest, src1, src2);
|
|
|
|
context.Assembler.Ror(dest, src2, dest.Type);
|
|
}
|
|
|
|
private static void GenerateShiftLeft(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
ValidateShift(dest, src1, src2);
|
|
|
|
context.Assembler.Shl(dest, src2, dest.Type);
|
|
}
|
|
|
|
private static void GenerateShiftRightSI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
ValidateShift(dest, src1, src2);
|
|
|
|
context.Assembler.Sar(dest, src2, dest.Type);
|
|
}
|
|
|
|
private static void GenerateShiftRightUI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
ValidateShift(dest, src1, src2);
|
|
|
|
context.Assembler.Shr(dest, src2, dest.Type);
|
|
}
|
|
|
|
private static void GenerateSignExtend16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Movsx16(dest, source, dest.Type);
|
|
}
|
|
|
|
private static void GenerateSignExtend32(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Movsx32(dest, source, dest.Type);
|
|
}
|
|
|
|
private static void GenerateSignExtend8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Movsx8(dest, source, dest.Type);
|
|
}
|
|
|
|
private static void GenerateSpill(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateSpill(context, operation, context.CallArgsRegionSize);
|
|
}
|
|
|
|
private static void GenerateSpillArg(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateSpill(context, operation, 0);
|
|
}
|
|
|
|
private static void GenerateSpill(CodeGenContext context, Operation operation, int baseOffset)
|
|
{
|
|
Operand offset = operation.GetSource(0);
|
|
Operand source = operation.GetSource(1);
|
|
|
|
Debug.Assert(offset.Kind == OperandKind.Constant);
|
|
|
|
int offs = offset.AsInt32() + baseOffset;
|
|
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
|
|
MemoryOperand memOp = new MemoryOperand(source.Type, rsp, null, Multiplier.x1, offs);
|
|
|
|
GenerateStore(context, memOp, source);
|
|
}
|
|
|
|
private static void GenerateStackAlloc(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand offset = operation.GetSource(0);
|
|
|
|
Debug.Assert(offset.Kind == OperandKind.Constant);
|
|
|
|
int offs = offset.AsInt32() + context.CallArgsRegionSize;
|
|
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
|
|
MemoryOperand memOp = new MemoryOperand(OperandType.I64, rsp, null, Multiplier.x1, offs);
|
|
|
|
context.Assembler.Lea(dest, memOp, OperandType.I64);
|
|
}
|
|
|
|
private static void GenerateStore(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
GenerateStore(context, address, value);
|
|
}
|
|
|
|
private static void GenerateStore16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.Mov16(address, value);
|
|
}
|
|
|
|
private static void GenerateStore8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = Memory(operation.GetSource(0), value.Type);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.Mov8(address, value);
|
|
}
|
|
|
|
private static void GenerateSubtract(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
ValidateBinOp(dest, src1, src2);
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Sub(dest, src2, dest.Type);
|
|
}
|
|
else if (dest.Type == OperandType.FP32)
|
|
{
|
|
context.Assembler.Subss(dest, src1, src2);
|
|
}
|
|
else /* if (dest.Type == OperandType.FP64) */
|
|
{
|
|
context.Assembler.Subsd(dest, src1, src2);
|
|
}
|
|
}
|
|
|
|
private static void GenerateVectorCreateScalar(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(!dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
if (source.Type == OperandType.I32)
|
|
{
|
|
context.Assembler.Movd(dest, source); // (__m128i _mm_cvtsi32_si128(int a))
|
|
}
|
|
else /* if (source.Type == OperandType.I64) */
|
|
{
|
|
context.Assembler.Movq(dest, source); // (__m128i _mm_cvtsi64_si128(__int64 a))
|
|
}
|
|
}
|
|
|
|
private static void GenerateVectorExtract(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination; //Value
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Index
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src2.Kind == OperandKind.Constant);
|
|
|
|
byte index = src2.AsByte();
|
|
|
|
if (dest.Type == OperandType.I32)
|
|
{
|
|
Debug.Assert(index < 4);
|
|
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Pextrd(dest, src1, index);
|
|
}
|
|
else
|
|
{
|
|
if (index != 0)
|
|
{
|
|
int mask0 = 0b11_10_01_00;
|
|
int mask1 = 0b11_10_01_00;
|
|
|
|
mask0 = BitUtils.RotateRight(mask0, index * 2, 8);
|
|
mask1 = BitUtils.RotateRight(mask1, 8 - index * 2, 8);
|
|
|
|
context.Assembler.Pshufd(src1, src1, (byte)mask0);
|
|
context.Assembler.Movd (dest, src1);
|
|
context.Assembler.Pshufd(src1, src1, (byte)mask1);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movd(dest, src1);
|
|
}
|
|
}
|
|
}
|
|
else if (dest.Type == OperandType.I64)
|
|
{
|
|
Debug.Assert(index < 2);
|
|
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Pextrq(dest, src1, index);
|
|
}
|
|
else
|
|
{
|
|
if (index != 0)
|
|
{
|
|
const byte mask = 0b01_00_11_10;
|
|
|
|
context.Assembler.Pshufd(src1, src1, mask);
|
|
context.Assembler.Movq (dest, src1);
|
|
context.Assembler.Pshufd(src1, src1, mask);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movq(dest, src1);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Debug.Assert(index < (dest.Type == OperandType.FP32 ? 4 : 2));
|
|
|
|
// Floating-point types.
|
|
if ((index >= 2 && dest.Type == OperandType.FP32) ||
|
|
(index == 1 && dest.Type == OperandType.FP64))
|
|
{
|
|
context.Assembler.Movhlps(dest, dest, src1);
|
|
context.Assembler.Movq (dest, dest);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movq(dest, src1);
|
|
}
|
|
|
|
if (dest.Type == OperandType.FP32)
|
|
{
|
|
context.Assembler.Pshufd(dest, dest, (byte)(0xfc | (index & 1)));
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateVectorExtract16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination; //Value
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Index
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src2.Kind == OperandKind.Constant);
|
|
|
|
byte index = src2.AsByte();
|
|
|
|
Debug.Assert(index < 8);
|
|
|
|
context.Assembler.Pextrw(dest, src1, index);
|
|
}
|
|
|
|
private static void GenerateVectorExtract8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination; //Value
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Index
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src2.Kind == OperandKind.Constant);
|
|
|
|
byte index = src2.AsByte();
|
|
|
|
Debug.Assert(index < 16);
|
|
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Pextrb(dest, src1, index);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Pextrw(dest, src1, (byte)(index >> 1));
|
|
|
|
if ((index & 1) != 0)
|
|
{
|
|
context.Assembler.Shr(dest, new Operand(8), OperandType.I32);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movzx8(dest, dest, OperandType.I32);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateVectorInsert(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Value
|
|
Operand src3 = operation.GetSource(2); //Index
|
|
|
|
if (!HardwareCapabilities.SupportsVexEncoding)
|
|
{
|
|
EnsureSameReg(dest, src1);
|
|
}
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
void InsertIntSse2(int words)
|
|
{
|
|
if (dest.GetRegister() != src1.GetRegister())
|
|
{
|
|
context.Assembler.Movdqu(dest, src1);
|
|
}
|
|
|
|
for (int word = 0; word < words; word++)
|
|
{
|
|
// Insert lower 16-bits.
|
|
context.Assembler.Pinsrw(dest, dest, src2, (byte)(index * words + word));
|
|
|
|
// Move next word down.
|
|
context.Assembler.Ror(src2, new Operand(16), src2.Type);
|
|
}
|
|
}
|
|
|
|
if (src2.Type == OperandType.I32)
|
|
{
|
|
Debug.Assert(index < 4);
|
|
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Pinsrd(dest, src1, src2, index);
|
|
}
|
|
else
|
|
{
|
|
InsertIntSse2(2);
|
|
}
|
|
}
|
|
else if (src2.Type == OperandType.I64)
|
|
{
|
|
Debug.Assert(index < 2);
|
|
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Pinsrq(dest, src1, src2, index);
|
|
}
|
|
else
|
|
{
|
|
InsertIntSse2(4);
|
|
}
|
|
}
|
|
else if (src2.Type == OperandType.FP32)
|
|
{
|
|
Debug.Assert(index < 4);
|
|
|
|
if (index != 0)
|
|
{
|
|
if (HardwareCapabilities.SupportsSse41)
|
|
{
|
|
context.Assembler.Insertps(dest, src1, src2, (byte)(index << 4));
|
|
}
|
|
else
|
|
{
|
|
if (src1.GetRegister() == src2.GetRegister())
|
|
{
|
|
int mask = 0b11_10_01_00;
|
|
|
|
mask &= ~(0b11 << index * 2);
|
|
|
|
context.Assembler.Pshufd(dest, src1, (byte)mask);
|
|
}
|
|
else
|
|
{
|
|
int mask0 = 0b11_10_01_00;
|
|
int mask1 = 0b11_10_01_00;
|
|
|
|
mask0 = BitUtils.RotateRight(mask0, index * 2, 8);
|
|
mask1 = BitUtils.RotateRight(mask1, 8 - index * 2, 8);
|
|
|
|
context.Assembler.Pshufd(src1, src1, (byte)mask0); // Lane to be inserted in position 0.
|
|
context.Assembler.Movss (dest, src1, src2); // dest[127:0] = src1[127:32] | src2[31:0]
|
|
context.Assembler.Pshufd(dest, dest, (byte)mask1); // Inserted lane in original position.
|
|
|
|
if (dest.GetRegister() != src1.GetRegister())
|
|
{
|
|
context.Assembler.Pshufd(src1, src1, (byte)mask1); // Restore src1.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movss(dest, src1, src2);
|
|
}
|
|
}
|
|
else /* if (src2.Type == OperandType.FP64) */
|
|
{
|
|
Debug.Assert(index < 2);
|
|
|
|
if (index != 0)
|
|
{
|
|
context.Assembler.Movlhps(dest, src1, src2);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movsd(dest, src1, src2);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateVectorInsert16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Value
|
|
Operand src3 = operation.GetSource(2); //Index
|
|
|
|
if (!HardwareCapabilities.SupportsVexEncoding)
|
|
{
|
|
EnsureSameReg(dest, src1);
|
|
}
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
context.Assembler.Pinsrw(dest, src1, src2, index);
|
|
}
|
|
|
|
private static void GenerateVectorInsert8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0); //Vector
|
|
Operand src2 = operation.GetSource(1); //Value
|
|
Operand src3 = operation.GetSource(2); //Index
|
|
|
|
// It's not possible to emulate this instruction without
|
|
// SSE 4.1 support without the use of a temporary register,
|
|
// so we instead handle that case on the pre-allocator when
|
|
// SSE 4.1 is not supported on the CPU.
|
|
Debug.Assert(HardwareCapabilities.SupportsSse41);
|
|
|
|
if (!HardwareCapabilities.SupportsVexEncoding)
|
|
{
|
|
EnsureSameReg(dest, src1);
|
|
}
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
context.Assembler.Pinsrb(dest, src1, src2, index);
|
|
}
|
|
|
|
private static void GenerateVectorOne(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
Debug.Assert(!dest.Type.IsInteger());
|
|
|
|
context.Assembler.Pcmpeqw(dest, dest, dest);
|
|
}
|
|
|
|
private static void GenerateVectorZero(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
Debug.Assert(!dest.Type.IsInteger());
|
|
|
|
context.Assembler.Xorps(dest, dest, dest);
|
|
}
|
|
|
|
private static void GenerateVectorZeroUpper64(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type == OperandType.V128 && source.Type == OperandType.V128);
|
|
|
|
GenerateZeroUpper64(context, dest, source);
|
|
}
|
|
|
|
private static void GenerateVectorZeroUpper96(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type == OperandType.V128 && source.Type == OperandType.V128);
|
|
|
|
GenerateZeroUpper96(context, dest, source);
|
|
}
|
|
|
|
private static void GenerateZeroExtend16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Movzx16(dest, source, OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateZeroExtend32(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Mov(dest, source, OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateZeroExtend8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
context.Assembler.Movzx8(dest, source, OperandType.I32);
|
|
}
|
|
|
|
private static void GenerateLoad(CodeGenContext context, Operand address, Operand value)
|
|
{
|
|
switch (value.Type)
|
|
{
|
|
case OperandType.I32: context.Assembler.Mov (value, address, OperandType.I32); break;
|
|
case OperandType.I64: context.Assembler.Mov (value, address, OperandType.I64); break;
|
|
case OperandType.FP32: context.Assembler.Movd (value, address); break;
|
|
case OperandType.FP64: context.Assembler.Movq (value, address); break;
|
|
case OperandType.V128: context.Assembler.Movdqu(value, address); break;
|
|
|
|
default: Debug.Assert(false); break;
|
|
}
|
|
}
|
|
|
|
private static void GenerateStore(CodeGenContext context, Operand address, Operand value)
|
|
{
|
|
switch (value.Type)
|
|
{
|
|
case OperandType.I32: context.Assembler.Mov (address, value, OperandType.I32); break;
|
|
case OperandType.I64: context.Assembler.Mov (address, value, OperandType.I64); break;
|
|
case OperandType.FP32: context.Assembler.Movd (address, value); break;
|
|
case OperandType.FP64: context.Assembler.Movq (address, value); break;
|
|
case OperandType.V128: context.Assembler.Movdqu(address, value); break;
|
|
|
|
default: Debug.Assert(false); break;
|
|
}
|
|
}
|
|
|
|
private static void GenerateZeroUpper64(CodeGenContext context, Operand dest, Operand source)
|
|
{
|
|
context.Assembler.Movq(dest, source);
|
|
}
|
|
|
|
private static void GenerateZeroUpper96(CodeGenContext context, Operand dest, Operand source)
|
|
{
|
|
context.Assembler.Movq(dest, source);
|
|
context.Assembler.Pshufd(dest, dest, 0xfc);
|
|
}
|
|
|
|
private static void ValidateUnOp(Operand dest, Operand source)
|
|
{
|
|
#if DEBUG
|
|
EnsureSameReg (dest, source);
|
|
EnsureSameType(dest, source);
|
|
#endif
|
|
}
|
|
|
|
private static void ValidateBinOp(Operand dest, Operand src1, Operand src2)
|
|
{
|
|
#if DEBUG
|
|
EnsureSameReg (dest, src1);
|
|
EnsureSameType(dest, src1, src2);
|
|
#endif
|
|
}
|
|
|
|
private static void ValidateShift(Operand dest, Operand src1, Operand src2)
|
|
{
|
|
#if DEBUG
|
|
EnsureSameReg (dest, src1);
|
|
EnsureSameType(dest, src1);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && src2.Type == OperandType.I32);
|
|
#endif
|
|
}
|
|
|
|
private static void EnsureSameReg(Operand op1, Operand op2)
|
|
{
|
|
if (!op1.Type.IsInteger() && HardwareCapabilities.SupportsVexEncoding)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Debug.Assert(op1.Kind == OperandKind.Register || op1.Kind == OperandKind.Memory);
|
|
Debug.Assert(op1.Kind == op2.Kind);
|
|
Debug.Assert(op1.Value == op2.Value);
|
|
}
|
|
|
|
private static void EnsureSameType(Operand op1, Operand op2)
|
|
{
|
|
Debug.Assert(op1.Type == op2.Type);
|
|
}
|
|
|
|
private static void EnsureSameType(Operand op1, Operand op2, Operand op3)
|
|
{
|
|
Debug.Assert(op1.Type == op2.Type);
|
|
Debug.Assert(op1.Type == op3.Type);
|
|
}
|
|
|
|
private static void EnsureSameType(Operand op1, Operand op2, Operand op3, Operand op4)
|
|
{
|
|
Debug.Assert(op1.Type == op2.Type);
|
|
Debug.Assert(op1.Type == op3.Type);
|
|
Debug.Assert(op1.Type == op4.Type);
|
|
}
|
|
|
|
private static UnwindInfo WritePrologue(CodeGenContext context)
|
|
{
|
|
List<UnwindPushEntry> pushEntries = new List<UnwindPushEntry>();
|
|
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
|
|
int mask = CallingConvention.GetIntCalleeSavedRegisters() & context.AllocResult.IntUsedRegisters;
|
|
|
|
while (mask != 0)
|
|
{
|
|
int bit = BitUtils.LowestBitSet(mask);
|
|
|
|
context.Assembler.Push(Register((X86Register)bit));
|
|
|
|
pushEntries.Add(new UnwindPushEntry(bit, RegisterType.Integer, context.StreamOffset));
|
|
|
|
mask &= ~(1 << bit);
|
|
}
|
|
|
|
int reservedStackSize = context.CallArgsRegionSize + context.AllocResult.SpillRegionSize;
|
|
|
|
reservedStackSize += context.XmmSaveRegionSize;
|
|
|
|
if (reservedStackSize >= StackGuardSize)
|
|
{
|
|
GenerateInlineStackProbe(context, reservedStackSize);
|
|
}
|
|
|
|
if (reservedStackSize != 0)
|
|
{
|
|
context.Assembler.Sub(rsp, new Operand(reservedStackSize), OperandType.I64);
|
|
}
|
|
|
|
int offset = reservedStackSize;
|
|
|
|
mask = CallingConvention.GetVecCalleeSavedRegisters() & context.AllocResult.VecUsedRegisters;
|
|
|
|
while (mask != 0)
|
|
{
|
|
int bit = BitUtils.LowestBitSet(mask);
|
|
|
|
offset -= 16;
|
|
|
|
MemoryOperand memOp = new MemoryOperand(OperandType.V128, rsp, null, Multiplier.x1, offset);
|
|
|
|
context.Assembler.Movdqu(memOp, Xmm((X86Register)bit));
|
|
|
|
pushEntries.Add(new UnwindPushEntry(bit, RegisterType.Vector, context.StreamOffset));
|
|
|
|
mask &= ~(1 << bit);
|
|
}
|
|
|
|
return new UnwindInfo(pushEntries.ToArray(), context.StreamOffset, reservedStackSize);
|
|
}
|
|
|
|
private static void WriteEpilogue(CodeGenContext context)
|
|
{
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
|
|
int reservedStackSize = context.CallArgsRegionSize + context.AllocResult.SpillRegionSize;
|
|
|
|
reservedStackSize += context.XmmSaveRegionSize;
|
|
|
|
int offset = reservedStackSize;
|
|
|
|
int mask = CallingConvention.GetVecCalleeSavedRegisters() & context.AllocResult.VecUsedRegisters;
|
|
|
|
while (mask != 0)
|
|
{
|
|
int bit = BitUtils.LowestBitSet(mask);
|
|
|
|
offset -= 16;
|
|
|
|
MemoryOperand memOp = new MemoryOperand(OperandType.V128, rsp, null, Multiplier.x1, offset);
|
|
|
|
context.Assembler.Movdqu(Xmm((X86Register)bit), memOp);
|
|
|
|
mask &= ~(1 << bit);
|
|
}
|
|
|
|
if (reservedStackSize != 0)
|
|
{
|
|
context.Assembler.Add(rsp, new Operand(reservedStackSize), OperandType.I64);
|
|
}
|
|
|
|
mask = CallingConvention.GetIntCalleeSavedRegisters() & context.AllocResult.IntUsedRegisters;
|
|
|
|
while (mask != 0)
|
|
{
|
|
int bit = BitUtils.HighestBitSet(mask);
|
|
|
|
context.Assembler.Pop(Register((X86Register)bit));
|
|
|
|
mask &= ~(1 << bit);
|
|
}
|
|
}
|
|
|
|
private static void GenerateInlineStackProbe(CodeGenContext context, int size)
|
|
{
|
|
// Windows does lazy stack allocation, and there are just 2
|
|
// guard pages on the end of the stack. So, if the allocation
|
|
// size we make is greater than this guard size, we must ensure
|
|
// that the OS will map all pages that we'll use. We do that by
|
|
// doing a dummy read on those pages, forcing a page fault and
|
|
// the OS to map them. If they are already mapped, nothing happens.
|
|
const int pageMask = PageSize - 1;
|
|
|
|
size = (size + pageMask) & ~pageMask;
|
|
|
|
Operand rsp = Register(X86Register.Rsp);
|
|
Operand temp = Register(CallingConvention.GetIntReturnRegister());
|
|
|
|
for (int offset = PageSize; offset < size; offset += PageSize)
|
|
{
|
|
Operand memOp = new MemoryOperand(OperandType.I32, rsp, null, Multiplier.x1, -offset);
|
|
|
|
context.Assembler.Mov(temp, memOp, OperandType.I32);
|
|
}
|
|
}
|
|
|
|
private static MemoryOperand Memory(Operand operand, OperandType type)
|
|
{
|
|
if (operand.Kind == OperandKind.Memory)
|
|
{
|
|
return operand as MemoryOperand;
|
|
}
|
|
|
|
return new MemoryOperand(type, operand);
|
|
}
|
|
|
|
private static Operand Register(X86Register register, OperandType type = OperandType.I64)
|
|
{
|
|
return new Operand((int)register, RegisterType.Integer, type);
|
|
}
|
|
|
|
private static Operand Xmm(X86Register register)
|
|
{
|
|
return new Operand((int)register, RegisterType.Vector, OperandType.V128);
|
|
}
|
|
}
|
|
} |