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4f293f8cbe
* Arm64: Simplify TryEncodeBitMask * CodeGenerator: Use TryEncodeBitMask in GenerateConstantCopy * Ptc: Bump version
1580 lines
No EOL
56 KiB
C#
1580 lines
No EOL
56 KiB
C#
using ARMeilleure.CodeGen.Linking;
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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.Numerics;
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using static ARMeilleure.IntermediateRepresentation.Operand;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.CodeGen.Arm64
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{
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static class CodeGenerator
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{
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private const int DWordScale = 3;
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private const int RegistersCount = 32;
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private const int FpRegister = 29;
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private const int LrRegister = 30;
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private const int SpRegister = 31;
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private const int ZrRegister = 31;
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private enum AccessSize
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{
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Byte,
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Hword,
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Auto
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}
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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.BranchIf, GenerateBranchIf);
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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.Compare, GenerateCompare);
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Add(Instruction.CompareAndSwap, GenerateCompareAndSwap);
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Add(Instruction.CompareAndSwap16, GenerateCompareAndSwap16);
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Add(Instruction.CompareAndSwap8, GenerateCompareAndSwap8);
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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.ConvertToFPUI, GenerateConvertToFPUI);
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Add(Instruction.Copy, GenerateCopy);
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Add(Instruction.CountLeadingZeros, GenerateCountLeadingZeros);
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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.MemoryBarrier, GenerateMemoryBarrier);
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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.Tailcall, GenerateTailcall);
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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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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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}
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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.HasFlag(CompilerOptions.Optimize))
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{
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if (cctx.Options.HasFlag(CompilerOptions.SsaForm))
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{
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Optimizer.RunPass(cfg);
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}
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BlockPlacement.RunPass(cfg);
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}
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Arm64Optimizer.RunPass(cfg);
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Logger.EndPass(PassName.Optimization, cfg);
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Logger.StartPass(PassName.PreAllocation);
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StackAllocator stackAlloc = new();
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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.HasFlag(CompilerOptions.SsaForm))
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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.HasFlag(CompilerOptions.Lsra))
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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(
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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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RegistersCount);
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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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//Console.Error.WriteLine(IRDumper.GetDump(cfg));
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bool relocatable = (cctx.Options & CompilerOptions.Relocatable) != 0;
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CodeGenContext context = new(allocResult, maxCallArgs, cfg.Blocks.Count, relocatable);
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UnwindInfo unwindInfo = WritePrologue(context);
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for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
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{
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context.EnterBlock(block);
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for (Operation node = block.Operations.First; node != default;)
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{
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node = GenerateOperation(context, node);
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}
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if (block.SuccessorsCount == 0)
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{
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// The only blocks which can have 0 successors are exit blocks.
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Operation last = block.Operations.Last;
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Debug.Assert(last.Instruction == Instruction.Tailcall ||
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last.Instruction == Instruction.Return);
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}
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else
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{
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BasicBlock succ = block.GetSuccessor(0);
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if (succ != block.ListNext)
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{
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context.JumpTo(succ);
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}
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}
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}
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(byte[] code, RelocInfo relocInfo) = context.GetCode();
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Logger.EndPass(PassName.CodeGeneration);
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return new CompiledFunction(code, unwindInfo, relocInfo);
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}
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private static Operation 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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CodeGeneratorIntrinsic.GenerateOperation(context, operation);
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}
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else
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{
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if (IsLoadOrStore(operation) &&
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operation.ListNext != default &&
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operation.ListNext.Instruction == operation.Instruction &&
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TryPairMemoryOp(context, operation, operation.ListNext))
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{
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// Skip next operation if we managed to pair them.
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return operation.ListNext.ListNext;
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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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return operation.ListNext;
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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, src1, src2);
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}
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else
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{
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context.Assembler.FaddScalar(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, src1, src2);
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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.Eor(dest, src1, src2);
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}
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else
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{
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context.Assembler.EorVector(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.Mvn(dest, source);
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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.Orr(dest, src1, src2);
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}
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private static void GenerateBranchIf(CodeGenContext context, Operation operation)
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{
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Operand comp = operation.GetSource(2);
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Debug.Assert(comp.Kind == OperandKind.Constant);
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var cond = ((Comparison)comp.AsInt32()).ToArmCondition();
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GenerateCompareCommon(context, operation);
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context.JumpTo(cond, context.CurrBlock.GetSuccessor(1));
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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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ValidateUnOp(dest, source);
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Debug.Assert(dest.Type.IsInteger());
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context.Assembler.Rev(dest, source);
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}
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private static void GenerateCall(CodeGenContext context, Operation operation)
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{
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context.Assembler.Blr(operation.GetSource(0));
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}
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private static void GenerateCompare(CodeGenContext context, Operation operation)
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{
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Operand dest = operation.Destination;
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Operand comp = operation.GetSource(2);
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Debug.Assert(dest.Type == OperandType.I32);
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Debug.Assert(comp.Kind == OperandKind.Constant);
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var cond = ((Comparison)comp.AsInt32()).ToArmCondition();
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GenerateCompareCommon(context, operation);
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context.Assembler.Cset(dest, cond);
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}
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private static void GenerateCompareAndSwap(CodeGenContext context, Operation operation)
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{
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if (operation.SourcesCount == 5) // CompareAndSwap128 has 5 sources, compared to CompareAndSwap64/32's 3.
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{
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Operand actualLow = operation.GetDestination(0);
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Operand actualHigh = operation.GetDestination(1);
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Operand temp0 = operation.GetDestination(2);
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Operand temp1 = operation.GetDestination(3);
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Operand address = operation.GetSource(0);
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Operand expectedLow = operation.GetSource(1);
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Operand expectedHigh = operation.GetSource(2);
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Operand desiredLow = operation.GetSource(3);
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Operand desiredHigh = operation.GetSource(4);
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GenerateAtomicDcas(
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context,
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address,
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expectedLow,
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expectedHigh,
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desiredLow,
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desiredHigh,
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actualLow,
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actualHigh,
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temp0,
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temp1);
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}
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else
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{
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Operand actual = operation.GetDestination(0);
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Operand result = operation.GetDestination(1);
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Operand address = operation.GetSource(0);
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Operand expected = operation.GetSource(1);
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Operand desired = operation.GetSource(2);
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GenerateAtomicCas(context, address, expected, desired, actual, result, AccessSize.Auto);
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}
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}
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private static void GenerateCompareAndSwap16(CodeGenContext context, Operation operation)
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{
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Operand actual = operation.GetDestination(0);
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Operand result = operation.GetDestination(1);
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Operand address = operation.GetSource(0);
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Operand expected = operation.GetSource(1);
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Operand desired = operation.GetSource(2);
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GenerateAtomicCas(context, address, expected, desired, actual, result, AccessSize.Hword);
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}
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private static void GenerateCompareAndSwap8(CodeGenContext context, Operation operation)
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{
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Operand actual = operation.GetDestination(0);
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Operand result = operation.GetDestination(1);
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Operand address = operation.GetSource(0);
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Operand expected = operation.GetSource(1);
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Operand desired = operation.GetSource(2);
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GenerateAtomicCas(context, address, expected, desired, actual, result, AccessSize.Byte);
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}
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private static void GenerateCompareCommon(CodeGenContext context, Operation operation)
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{
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Operand src1 = operation.GetSource(0);
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Operand src2 = operation.GetSource(1);
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EnsureSameType(src1, src2);
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Debug.Assert(src1.Type.IsInteger());
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context.Assembler.Cmp(src1, src2);
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}
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private static void GenerateConditionalSelect(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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Operand src3 = operation.GetSource(2);
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EnsureSameType(dest, src2, src3);
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Debug.Assert(dest.Type.IsInteger());
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Debug.Assert(src1.Type == OperandType.I32);
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context.Assembler.Cmp (src1, Const(src1.Type, 0));
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context.Assembler.Csel(dest, src2, src3, ArmCondition.Ne);
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}
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private static void GenerateConvertI64ToI32(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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Debug.Assert(dest.Type == OperandType.I32 && source.Type == OperandType.I64);
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context.Assembler.Mov(dest, Register(source, OperandType.I32));
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}
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private static void GenerateConvertToFP(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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Debug.Assert(dest.Type == OperandType.FP32 || dest.Type == OperandType.FP64);
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Debug.Assert(dest.Type != source.Type);
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Debug.Assert(source.Type != OperandType.V128);
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if (source.Type.IsInteger())
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{
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context.Assembler.ScvtfScalar(dest, source);
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}
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else
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{
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context.Assembler.FcvtScalar(dest, source);
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}
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}
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private static void GenerateConvertToFPUI(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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Debug.Assert(dest.Type == OperandType.FP32 || dest.Type == OperandType.FP64);
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Debug.Assert(dest.Type != source.Type);
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Debug.Assert(source.Type.IsInteger());
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context.Assembler.UcvtfScalar(dest, source);
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}
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private static void GenerateCopy(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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EnsureSameType(dest, source);
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Debug.Assert(dest.Type.IsInteger() || source.Kind != OperandKind.Constant);
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// Moves to the same register are useless.
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if (dest.Kind == source.Kind && dest.Value == source.Value)
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{
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return;
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}
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if (dest.Kind == OperandKind.Register && source.Kind == OperandKind.Constant)
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{
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if (source.Relocatable)
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{
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context.ReserveRelocatableConstant(dest, source.Symbol, source.Value);
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}
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else
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{
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GenerateConstantCopy(context, dest, source.Value);
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}
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}
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else
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{
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context.Assembler.Mov(dest, source);
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}
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}
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private static void GenerateCountLeadingZeros(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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EnsureSameType(dest, source);
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Debug.Assert(dest.Type.IsInteger());
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|
|
context.Assembler.Clz(dest, source);
|
|
}
|
|
|
|
private static void GenerateDivide(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand dividend = operation.GetSource(0);
|
|
Operand divisor = operation.GetSource(1);
|
|
|
|
ValidateBinOp(dest, dividend, divisor);
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Sdiv(dest, dividend, divisor);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.FdivScalar(dest, dividend, divisor);
|
|
}
|
|
}
|
|
|
|
private static void GenerateDivideUI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand dividend = operation.GetSource(0);
|
|
Operand divisor = operation.GetSource(1);
|
|
|
|
ValidateBinOp(dest, dividend, divisor);
|
|
|
|
context.Assembler.Udiv(dest, dividend, divisor);
|
|
}
|
|
|
|
private static void GenerateLoad(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = operation.GetSource(0);
|
|
|
|
context.Assembler.Ldr(value, address);
|
|
}
|
|
|
|
private static void GenerateLoad16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = operation.GetSource(0);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.LdrhRiUn(value, address, 0);
|
|
}
|
|
|
|
private static void GenerateLoad8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.Destination;
|
|
Operand address = operation.GetSource(0);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.LdrbRiUn(value, address, 0);
|
|
}
|
|
|
|
private static void GenerateMemoryBarrier(CodeGenContext context, Operation operation)
|
|
{
|
|
context.Assembler.Dmb(0xf);
|
|
}
|
|
|
|
private static void GenerateMultiply(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
EnsureSameType(dest, src1, src2);
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Mul(dest, src1, src2);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.FmulScalar(dest, src1, src2);
|
|
}
|
|
}
|
|
|
|
private static void GenerateMultiply64HighSI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
EnsureSameType(dest, src1, src2);
|
|
|
|
Debug.Assert(dest.Type == OperandType.I64);
|
|
|
|
context.Assembler.Smulh(dest, src1, src2);
|
|
}
|
|
|
|
private static void GenerateMultiply64HighUI(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0);
|
|
Operand src2 = operation.GetSource(1);
|
|
|
|
EnsureSameType(dest, src1, src2);
|
|
|
|
Debug.Assert(dest.Type == OperandType.I64);
|
|
|
|
context.Assembler.Umulh(dest, src1, src2);
|
|
}
|
|
|
|
private static void GenerateNegate(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
ValidateUnOp(dest, source);
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Neg(dest, source);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.FnegScalar(dest, source);
|
|
}
|
|
}
|
|
|
|
private static void GenerateLoad(CodeGenContext context, Operand value, Operand address, int offset)
|
|
{
|
|
if (CodeGenCommon.ConstFitsOnUImm12(offset, value.Type))
|
|
{
|
|
context.Assembler.LdrRiUn(value, address, offset);
|
|
}
|
|
else if (CodeGenCommon.ConstFitsOnSImm9(offset))
|
|
{
|
|
context.Assembler.Ldur(value, address, offset);
|
|
}
|
|
else
|
|
{
|
|
Operand tempAddress = Register(CodeGenCommon.ReservedRegister);
|
|
GenerateConstantCopy(context, tempAddress, (ulong)offset);
|
|
context.Assembler.Add(tempAddress, address, tempAddress, ArmExtensionType.Uxtx); // Address might be SP and must be the first input.
|
|
context.Assembler.LdrRiUn(value, tempAddress, 0);
|
|
}
|
|
}
|
|
|
|
private static void GenerateReturn(CodeGenContext context, Operation operation)
|
|
{
|
|
WriteEpilogue(context);
|
|
|
|
context.Assembler.Ret(Register(LrRegister));
|
|
}
|
|
|
|
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, src1, src2);
|
|
}
|
|
|
|
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.Lsl(dest, src1, src2);
|
|
}
|
|
|
|
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.Asr(dest, src1, src2);
|
|
}
|
|
|
|
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.Lsr(dest, src1, src2);
|
|
}
|
|
|
|
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.Sxth(dest, source);
|
|
}
|
|
|
|
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.Sxtw(dest, source);
|
|
}
|
|
|
|
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.Sxtb(dest, source);
|
|
}
|
|
|
|
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 + context.FpLrSaveRegionSize;
|
|
|
|
GenerateLoad(context, dest, Register(SpRegister), offs);
|
|
}
|
|
|
|
private static void GenerateStore(CodeGenContext context, Operand value, Operand address, int offset)
|
|
{
|
|
if (CodeGenCommon.ConstFitsOnUImm12(offset, value.Type))
|
|
{
|
|
context.Assembler.StrRiUn(value, address, offset);
|
|
}
|
|
else if (CodeGenCommon.ConstFitsOnSImm9(offset))
|
|
{
|
|
context.Assembler.Stur(value, address, offset);
|
|
}
|
|
else
|
|
{
|
|
Operand tempAddress = Register(CodeGenCommon.ReservedRegister);
|
|
GenerateConstantCopy(context, tempAddress, (ulong)offset);
|
|
context.Assembler.Add(tempAddress, address, tempAddress, ArmExtensionType.Uxtx); // Address might be SP and must be the first input.
|
|
context.Assembler.StrRiUn(value, tempAddress, 0);
|
|
}
|
|
}
|
|
|
|
private static void GenerateSpill(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateSpill(context, operation, context.CallArgsRegionSize + context.FpLrSaveRegionSize);
|
|
}
|
|
|
|
private static void GenerateSpillArg(CodeGenContext context, Operation operation)
|
|
{
|
|
GenerateSpill(context, operation, 0);
|
|
}
|
|
|
|
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 + context.FpLrSaveRegionSize;
|
|
|
|
context.Assembler.Add(dest, Register(SpRegister), Const(dest.Type, offs));
|
|
}
|
|
|
|
private static void GenerateStore(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = operation.GetSource(0);
|
|
|
|
context.Assembler.Str(value, address);
|
|
}
|
|
|
|
private static void GenerateStore16(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = operation.GetSource(0);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.StrhRiUn(value, address, 0);
|
|
}
|
|
|
|
private static void GenerateStore8(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand value = operation.GetSource(1);
|
|
Operand address = operation.GetSource(0);
|
|
|
|
Debug.Assert(value.Type.IsInteger());
|
|
|
|
context.Assembler.StrbRiUn(value, address, 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;
|
|
|
|
GenerateStore(context, source, Register(SpRegister), offs);
|
|
}
|
|
|
|
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, src1, src2);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.FsubScalar(dest, src1, src2);
|
|
}
|
|
}
|
|
|
|
private static void GenerateTailcall(CodeGenContext context, Operation operation)
|
|
{
|
|
WriteEpilogue(context);
|
|
|
|
context.Assembler.Br(operation.GetSource(0));
|
|
}
|
|
|
|
private static void GenerateVectorCreateScalar(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
if (dest != default)
|
|
{
|
|
Debug.Assert(!dest.Type.IsInteger() && source.Type.IsInteger());
|
|
|
|
OperandType destType = source.Type == OperandType.I64 ? OperandType.FP64 : OperandType.FP32;
|
|
|
|
context.Assembler.Fmov(Register(dest, destType), source, topHalf: false);
|
|
}
|
|
}
|
|
|
|
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();
|
|
|
|
Debug.Assert(index < OperandType.V128.GetSizeInBytes() / dest.Type.GetSizeInBytes());
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
context.Assembler.Umov(dest, src1, index, dest.Type == OperandType.I64 ? 3 : 2);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.DupScalar(dest, src1, index, dest.Type == OperandType.FP64 ? 3 : 2);
|
|
}
|
|
}
|
|
|
|
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.Umov(dest, src1, index, 1);
|
|
}
|
|
|
|
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);
|
|
|
|
context.Assembler.Umov(dest, src1, index, 0);
|
|
}
|
|
|
|
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
|
|
|
|
EnsureSameReg(dest, src1);
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
if (src2.Type.IsInteger())
|
|
{
|
|
context.Assembler.Ins(dest, src2, index, src2.Type == OperandType.I64 ? 3 : 2);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Ins(dest, src2, 0, index, src2.Type == OperandType.FP64 ? 3 : 2);
|
|
}
|
|
}
|
|
|
|
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
|
|
|
|
EnsureSameReg(dest, src1);
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
context.Assembler.Ins(dest, src2, index, 1);
|
|
}
|
|
|
|
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
|
|
|
|
EnsureSameReg(dest, src1);
|
|
|
|
Debug.Assert(src1.Type == OperandType.V128);
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
context.Assembler.Ins(dest, src2, index, 0);
|
|
}
|
|
|
|
private static void GenerateVectorOne(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
Debug.Assert(!dest.Type.IsInteger());
|
|
|
|
context.Assembler.CmeqVector(dest, dest, dest, 2);
|
|
}
|
|
|
|
private static void GenerateVectorZero(CodeGenContext context, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
Debug.Assert(!dest.Type.IsInteger());
|
|
|
|
context.Assembler.EorVector(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);
|
|
|
|
context.Assembler.Fmov(Register(dest, OperandType.FP64), Register(source, OperandType.FP64));
|
|
}
|
|
|
|
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);
|
|
|
|
context.Assembler.Fmov(Register(dest, OperandType.FP32), Register(source, OperandType.FP32));
|
|
}
|
|
|
|
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.Uxth(dest, source);
|
|
}
|
|
|
|
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());
|
|
|
|
// We can eliminate the move if source is already 32-bit and the registers are the same.
|
|
if (dest.Value == source.Value && source.Type == OperandType.I32)
|
|
{
|
|
return;
|
|
}
|
|
|
|
context.Assembler.Mov(Register(dest.GetRegister().Index, OperandType.I32), source);
|
|
}
|
|
|
|
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.Uxtb(dest, source);
|
|
}
|
|
|
|
private static UnwindInfo WritePrologue(CodeGenContext context)
|
|
{
|
|
List<UnwindPushEntry> pushEntries = new List<UnwindPushEntry>();
|
|
|
|
Operand rsp = Register(SpRegister);
|
|
|
|
int intMask = CallingConvention.GetIntCalleeSavedRegisters() & context.AllocResult.IntUsedRegisters;
|
|
int vecMask = CallingConvention.GetFpCalleeSavedRegisters() & context.AllocResult.VecUsedRegisters;
|
|
|
|
int intCalleeSavedRegsCount = BitOperations.PopCount((uint)intMask);
|
|
int vecCalleeSavedRegsCount = BitOperations.PopCount((uint)vecMask);
|
|
|
|
int calleeSaveRegionSize = Align16(intCalleeSavedRegsCount * 8 + vecCalleeSavedRegsCount * 8);
|
|
|
|
int offset = 0;
|
|
|
|
WritePrologueCalleeSavesPreIndexed(context, pushEntries, ref intMask, ref offset, calleeSaveRegionSize, OperandType.I64);
|
|
WritePrologueCalleeSavesPreIndexed(context, pushEntries, ref vecMask, ref offset, calleeSaveRegionSize, OperandType.FP64);
|
|
|
|
int localSize = Align16(context.AllocResult.SpillRegionSize + context.FpLrSaveRegionSize);
|
|
int outArgsSize = context.CallArgsRegionSize;
|
|
|
|
if (CodeGenCommon.ConstFitsOnSImm7(localSize, DWordScale))
|
|
{
|
|
if (context.HasCall)
|
|
{
|
|
context.Assembler.StpRiPre(Register(FpRegister), Register(LrRegister), rsp, -localSize);
|
|
context.Assembler.MovSp(Register(FpRegister), rsp);
|
|
}
|
|
|
|
if (outArgsSize != 0)
|
|
{
|
|
context.Assembler.Sub(rsp, rsp, Const(OperandType.I64, outArgsSize));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int frameSize = localSize + outArgsSize;
|
|
if (frameSize != 0)
|
|
{
|
|
if (CodeGenCommon.ConstFitsOnUImm12(frameSize))
|
|
{
|
|
context.Assembler.Sub(rsp, rsp, Const(OperandType.I64, frameSize));
|
|
}
|
|
else
|
|
{
|
|
Operand tempSize = Register(CodeGenCommon.ReservedRegister);
|
|
GenerateConstantCopy(context, tempSize, (ulong)frameSize);
|
|
context.Assembler.Sub(rsp, rsp, tempSize, ArmExtensionType.Uxtx);
|
|
}
|
|
}
|
|
|
|
context.Assembler.StpRiUn(Register(FpRegister), Register(LrRegister), rsp, outArgsSize);
|
|
|
|
if (outArgsSize != 0)
|
|
{
|
|
context.Assembler.Add(Register(FpRegister), Register(SpRegister), Const(OperandType.I64, outArgsSize));
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.MovSp(Register(FpRegister), Register(SpRegister));
|
|
}
|
|
}
|
|
|
|
return new UnwindInfo(pushEntries.ToArray(), context.StreamOffset);
|
|
}
|
|
|
|
private static void WritePrologueCalleeSavesPreIndexed(
|
|
CodeGenContext context,
|
|
List<UnwindPushEntry> pushEntries,
|
|
ref int mask,
|
|
ref int offset,
|
|
int calleeSaveRegionSize,
|
|
OperandType type)
|
|
{
|
|
if ((BitOperations.PopCount((uint)mask) & 1) != 0)
|
|
{
|
|
int reg = BitOperations.TrailingZeroCount(mask);
|
|
|
|
pushEntries.Add(new UnwindPushEntry(UnwindPseudoOp.PushReg, context.StreamOffset, regIndex: reg));
|
|
|
|
mask &= ~(1 << reg);
|
|
|
|
if (offset != 0)
|
|
{
|
|
context.Assembler.StrRiUn(Register(reg, type), Register(SpRegister), offset);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.StrRiPre(Register(reg, type), Register(SpRegister), -calleeSaveRegionSize);
|
|
}
|
|
|
|
offset += type.GetSizeInBytes();
|
|
}
|
|
|
|
while (mask != 0)
|
|
{
|
|
int reg = BitOperations.TrailingZeroCount(mask);
|
|
|
|
pushEntries.Add(new UnwindPushEntry(UnwindPseudoOp.PushReg, context.StreamOffset, regIndex: reg));
|
|
|
|
mask &= ~(1 << reg);
|
|
|
|
int reg2 = BitOperations.TrailingZeroCount(mask);
|
|
|
|
pushEntries.Add(new UnwindPushEntry(UnwindPseudoOp.PushReg, context.StreamOffset, regIndex: reg2));
|
|
|
|
mask &= ~(1 << reg2);
|
|
|
|
if (offset != 0)
|
|
{
|
|
context.Assembler.StpRiUn(Register(reg, type), Register(reg2, type), Register(SpRegister), offset);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.StpRiPre(Register(reg, type), Register(reg2, type), Register(SpRegister), -calleeSaveRegionSize);
|
|
}
|
|
|
|
offset += type.GetSizeInBytes() * 2;
|
|
}
|
|
}
|
|
|
|
private static void WriteEpilogue(CodeGenContext context)
|
|
{
|
|
Operand rsp = Register(SpRegister);
|
|
|
|
int localSize = Align16(context.AllocResult.SpillRegionSize + context.FpLrSaveRegionSize);
|
|
int outArgsSize = context.CallArgsRegionSize;
|
|
|
|
if (CodeGenCommon.ConstFitsOnSImm7(localSize, DWordScale))
|
|
{
|
|
if (outArgsSize != 0)
|
|
{
|
|
context.Assembler.Add(rsp, rsp, Const(OperandType.I64, outArgsSize));
|
|
}
|
|
|
|
if (context.HasCall)
|
|
{
|
|
context.Assembler.LdpRiPost(Register(FpRegister), Register(LrRegister), rsp, localSize);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (context.HasCall)
|
|
{
|
|
context.Assembler.LdpRiUn(Register(FpRegister), Register(LrRegister), rsp, outArgsSize);
|
|
}
|
|
|
|
int frameSize = localSize + outArgsSize;
|
|
if (frameSize != 0)
|
|
{
|
|
if (CodeGenCommon.ConstFitsOnUImm12(frameSize))
|
|
{
|
|
context.Assembler.Add(rsp, rsp, Const(OperandType.I64, frameSize));
|
|
}
|
|
else
|
|
{
|
|
Operand tempSize = Register(CodeGenCommon.ReservedRegister);
|
|
GenerateConstantCopy(context, tempSize, (ulong)frameSize);
|
|
context.Assembler.Add(rsp, rsp, tempSize, ArmExtensionType.Uxtx);
|
|
}
|
|
}
|
|
}
|
|
|
|
int intMask = CallingConvention.GetIntCalleeSavedRegisters() & context.AllocResult.IntUsedRegisters;
|
|
int vecMask = CallingConvention.GetFpCalleeSavedRegisters() & context.AllocResult.VecUsedRegisters;
|
|
|
|
int intCalleeSavedRegsCount = BitOperations.PopCount((uint)intMask);
|
|
int vecCalleeSavedRegsCount = BitOperations.PopCount((uint)vecMask);
|
|
|
|
int offset = intCalleeSavedRegsCount * 8 + vecCalleeSavedRegsCount * 8;
|
|
int calleeSaveRegionSize = Align16(offset);
|
|
|
|
WriteEpilogueCalleeSavesPostIndexed(context, ref vecMask, ref offset, calleeSaveRegionSize, OperandType.FP64);
|
|
WriteEpilogueCalleeSavesPostIndexed(context, ref intMask, ref offset, calleeSaveRegionSize, OperandType.I64);
|
|
}
|
|
|
|
private static void WriteEpilogueCalleeSavesPostIndexed(
|
|
CodeGenContext context,
|
|
ref int mask,
|
|
ref int offset,
|
|
int calleeSaveRegionSize,
|
|
OperandType type)
|
|
{
|
|
while (mask != 0)
|
|
{
|
|
int reg = BitUtils.HighestBitSet(mask);
|
|
|
|
mask &= ~(1 << reg);
|
|
|
|
if (mask != 0)
|
|
{
|
|
int reg2 = BitUtils.HighestBitSet(mask);
|
|
|
|
mask &= ~(1 << reg2);
|
|
|
|
offset -= type.GetSizeInBytes() * 2;
|
|
|
|
if (offset != 0)
|
|
{
|
|
context.Assembler.LdpRiUn(Register(reg2, type), Register(reg, type), Register(SpRegister), offset);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.LdpRiPost(Register(reg2, type), Register(reg, type), Register(SpRegister), calleeSaveRegionSize);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
offset -= type.GetSizeInBytes();
|
|
|
|
if (offset != 0)
|
|
{
|
|
context.Assembler.LdrRiUn(Register(reg, type), Register(SpRegister), offset);
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.LdrRiPost(Register(reg, type), Register(SpRegister), calleeSaveRegionSize);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateConstantCopy(CodeGenContext context, Operand dest, ulong value)
|
|
{
|
|
if (value == 0)
|
|
{
|
|
context.Assembler.Mov(dest, Register(ZrRegister, dest.Type));
|
|
}
|
|
else if (CodeGenCommon.TryEncodeBitMask(dest.Type, value, out _, out _, out _))
|
|
{
|
|
context.Assembler.Orr(dest, Register(ZrRegister, dest.Type), Const(dest.Type, (long)value));
|
|
}
|
|
else
|
|
{
|
|
int hw = 0;
|
|
bool first = true;
|
|
|
|
while (value != 0)
|
|
{
|
|
int valueLow = (ushort)value;
|
|
if (valueLow != 0)
|
|
{
|
|
if (first)
|
|
{
|
|
context.Assembler.Movz(dest, valueLow, hw);
|
|
first = false;
|
|
}
|
|
else
|
|
{
|
|
context.Assembler.Movk(dest, valueLow, hw);
|
|
}
|
|
}
|
|
|
|
hw++;
|
|
value >>= 16;
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateAtomicCas(
|
|
CodeGenContext context,
|
|
Operand address,
|
|
Operand expected,
|
|
Operand desired,
|
|
Operand actual,
|
|
Operand result,
|
|
AccessSize accessSize)
|
|
{
|
|
int startOffset = context.StreamOffset;
|
|
|
|
switch (accessSize)
|
|
{
|
|
case AccessSize.Byte:
|
|
context.Assembler.Ldaxrb(actual, address);
|
|
break;
|
|
case AccessSize.Hword:
|
|
context.Assembler.Ldaxrh(actual, address);
|
|
break;
|
|
default:
|
|
context.Assembler.Ldaxr(actual, address);
|
|
break;
|
|
}
|
|
|
|
context.Assembler.Cmp(actual, expected);
|
|
|
|
context.JumpToNear(ArmCondition.Ne);
|
|
|
|
switch (accessSize)
|
|
{
|
|
case AccessSize.Byte:
|
|
context.Assembler.Stlxrb(desired, address, result);
|
|
break;
|
|
case AccessSize.Hword:
|
|
context.Assembler.Stlxrh(desired, address, result);
|
|
break;
|
|
default:
|
|
context.Assembler.Stlxr(desired, address, result);
|
|
break;
|
|
}
|
|
|
|
context.Assembler.Cbnz(result, startOffset - context.StreamOffset); // Retry if store failed.
|
|
|
|
context.JumpHere();
|
|
|
|
context.Assembler.Clrex();
|
|
}
|
|
|
|
private static void GenerateAtomicDcas(
|
|
CodeGenContext context,
|
|
Operand address,
|
|
Operand expectedLow,
|
|
Operand expectedHigh,
|
|
Operand desiredLow,
|
|
Operand desiredHigh,
|
|
Operand actualLow,
|
|
Operand actualHigh,
|
|
Operand temp0,
|
|
Operand temp1)
|
|
{
|
|
int startOffset = context.StreamOffset;
|
|
|
|
context.Assembler.Ldaxp(actualLow, actualHigh, address);
|
|
context.Assembler.Eor(temp0, actualHigh, expectedHigh);
|
|
context.Assembler.Eor(temp1, actualLow, expectedLow);
|
|
context.Assembler.Orr(temp0, temp1, temp0);
|
|
|
|
context.JumpToNearIfNotZero(temp0);
|
|
|
|
Operand result = Register(temp0, OperandType.I32);
|
|
|
|
context.Assembler.Stlxp(desiredLow, desiredHigh, address, result);
|
|
context.Assembler.Cbnz(result, startOffset - context.StreamOffset); // Retry if store failed.
|
|
|
|
context.JumpHere();
|
|
|
|
context.Assembler.Clrex();
|
|
}
|
|
|
|
private static bool TryPairMemoryOp(CodeGenContext context, Operation currentOp, Operation nextOp)
|
|
{
|
|
if (!TryGetMemOpBaseAndOffset(currentOp, out Operand op1Base, out int op1Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!TryGetMemOpBaseAndOffset(nextOp, out Operand op2Base, out int op2Offset))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (op1Base != op2Base)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
OperandType valueType = GetMemOpValueType(currentOp);
|
|
|
|
if (valueType != GetMemOpValueType(nextOp) || op1Offset + valueType.GetSizeInBytes() != op2Offset)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!CodeGenCommon.ConstFitsOnSImm7(op1Offset, valueType.GetSizeInBytesLog2()))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (currentOp.Instruction == Instruction.Load)
|
|
{
|
|
context.Assembler.LdpRiUn(currentOp.Destination, nextOp.Destination, op1Base, op1Offset);
|
|
}
|
|
else if (currentOp.Instruction == Instruction.Store)
|
|
{
|
|
context.Assembler.StpRiUn(currentOp.GetSource(1), nextOp.GetSource(1), op1Base, op1Offset);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private static bool IsLoadOrStore(Operation operation)
|
|
{
|
|
return operation.Instruction == Instruction.Load || operation.Instruction == Instruction.Store;
|
|
}
|
|
|
|
private static OperandType GetMemOpValueType(Operation operation)
|
|
{
|
|
if (operation.Destination != default)
|
|
{
|
|
return operation.Destination.Type;
|
|
}
|
|
|
|
return operation.GetSource(1).Type;
|
|
}
|
|
|
|
private static bool TryGetMemOpBaseAndOffset(Operation operation, out Operand baseAddress, out int offset)
|
|
{
|
|
baseAddress = default;
|
|
offset = 0;
|
|
Operand address = operation.GetSource(0);
|
|
|
|
if (address.Kind != OperandKind.Memory)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
MemoryOperand memOp = address.GetMemory();
|
|
Operand baseOp = memOp.BaseAddress;
|
|
|
|
if (baseOp == default)
|
|
{
|
|
baseOp = memOp.Index;
|
|
|
|
if (baseOp == default || memOp.Scale != Multiplier.x1)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
if (memOp.Index != default)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
baseAddress = memOp.BaseAddress;
|
|
offset = memOp.Displacement;
|
|
|
|
return true;
|
|
}
|
|
|
|
private static Operand Register(Operand operand, OperandType type = OperandType.I64)
|
|
{
|
|
return Register(operand.GetRegister().Index, type);
|
|
}
|
|
|
|
private static Operand Register(int register, OperandType type = OperandType.I64)
|
|
{
|
|
return Factory.Register(register, RegisterType.Integer, type);
|
|
}
|
|
|
|
private static int Align16(int value)
|
|
{
|
|
return (value + 0xf) & ~0xf;
|
|
}
|
|
|
|
[Conditional("DEBUG")]
|
|
private static void ValidateUnOp(Operand dest, Operand source)
|
|
{
|
|
// Destination and source aren't forced to be equals
|
|
// EnsureSameReg (dest, source);
|
|
EnsureSameType(dest, source);
|
|
}
|
|
|
|
[Conditional("DEBUG")]
|
|
private static void ValidateBinOp(Operand dest, Operand src1, Operand src2)
|
|
{
|
|
// Destination and source aren't forced to be equals
|
|
// EnsureSameReg (dest, src1);
|
|
EnsureSameType(dest, src1, src2);
|
|
}
|
|
|
|
[Conditional("DEBUG")]
|
|
private static void ValidateShift(Operand dest, Operand src1, Operand src2)
|
|
{
|
|
// Destination and source aren't forced to be equals
|
|
// EnsureSameReg (dest, src1);
|
|
EnsureSameType(dest, src1);
|
|
|
|
Debug.Assert(dest.Type.IsInteger() && src2.Type == OperandType.I32);
|
|
}
|
|
|
|
private static void EnsureSameReg(Operand op1, Operand op2)
|
|
{
|
|
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);
|
|
}
|
|
}
|
|
} |