d904706fc0
* Implement Jump Table for Native Calls NOTE: this slows down rejit considerably! Not recommended to be used without codegen optimisation or AOT. - Does not work on Linux - A32 needs an additional commit. * A32 Support (WIP) * Actually write Direct Call pointers to the table That would help. * Direct Calls: Rather than returning to the translator, attempt to keep within the native stack frame. A return to the translator can still happen, but only by exceptionally bubbling up to it. Also: - Always translate lowCq as a function. Faster interop with the direct jumps, and this will be useful in future if we want to do speculative translation. - Tail Call Detection: after the decoding stage, detect if we do a tail call, and avoid translating into it. Detected if a jump is made to an address outwith the contiguous sequence of blocks surrounding the entry point. The goal is to reduce code touched by jit and rejit. * A32 Support * Use smaller max function size for lowCq, fix exceptional returns When a return has an unexpected value and there is no code block following this one, we now return the value rather than continuing. * CompareAndSwap (buggy) * Ensure CompareAndSwap does not get optimized away. * Use CompareAndSwap to make the dynamic table thread safe. * Tail call for linux, throw on too many arguments. * Combine CompareAndSwap 128 and 32/64. They emit different IR instructions since their PreAllocator behaviour is different, but now they just have one function on EmitterContext. * Fix issues separating from optimisations. * Use a stub to find and execute missing functions. This allows us to skip doing many runtime comparisons and branches, and reduces the amount of code we need to emit significantly. For the indirect call table, this stub also does the work of moving in the highCq address to the table when one is found. * Make Jump Tables and Jit Cache dynmically resize Reserve virtual memory, commit as needed. * Move TailCallRemover to its own class. * Multithreaded Translation (based on heuristic) A poor one, at that. Need to get core count for a better one, which means a lot of OS specific garbage. * Better priority management for background threads. * Bound core limit a bit more Past a certain point the load is not paralellizable and starts stealing from the main thread. Likely due to GC, memory, heap allocation thread contention. Reduce by one core til optimisations come to improve the situation. * Fix memory management on linux. * Temporary solution to some sync problems. This will make sure threads exit correctly, most of the time. There is a potential race where setting the sync counter to 0 does nothing (counter stays at what it was before, thread could take too long to exit), but we need to find a better way to do this anyways. Synchronization frequency has been tightened as we never enter blockwise segments of code. Essentially this means, check every x functions or loop iterations, before lowcq blocks existed and were worth just as much. Ideally it should be done in a better way, since functions can be anywhere from 1 to 5000 instructions. (maybe based on host timer, or an interrupt flag from a scheduler thread) * Address feedback minus CompareAndSwap change. * Use default ReservedRegion granularity. * Merge CompareAndSwap with its V128 variant. * We already got the source, no need to do it again. * Make sure all background translation threads exit. * Fix CompareAndSwap128 Detection criteria was a bit scuffed. * Address Comments.
1409 lines
No EOL
53 KiB
C#
1409 lines
No EOL
53 KiB
C#
using ARMeilleure.CodeGen.RegisterAllocators;
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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 static ARMeilleure.IntermediateRepresentation.OperandHelper;
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namespace ARMeilleure.CodeGen.X86
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{
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static class PreAllocator
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{
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public static void RunPass(CompilerContext cctx, StackAllocator stackAlloc, out int maxCallArgs)
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{
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maxCallArgs = -1;
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CallConvName callConv = CallingConvention.GetCurrentCallConv();
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Operand[] preservedArgs = new Operand[CallingConvention.GetArgumentsOnRegsCount()];
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for (BasicBlock block = cctx.Cfg.Blocks.First; block != null; block = block.ListNext)
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{
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Node nextNode;
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for (Node node = block.Operations.First; node != null; node = nextNode)
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{
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nextNode = node.ListNext;
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if (!(node is Operation operation))
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{
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continue;
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}
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HandleConstantCopy(block.Operations, node, operation);
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HandleSameDestSrc1Copy(block.Operations, node, operation);
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HandleFixedRegisterCopy(block.Operations, node, operation);
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switch (operation.Instruction)
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{
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case Instruction.Call:
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// Get the maximum number of arguments used on a call.
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// On windows, when a struct is returned from the call,
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// we also need to pass the pointer where the struct
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// should be written on the first argument.
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int argsCount = operation.SourcesCount - 1;
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if (operation.Destination != null && operation.Destination.Type == OperandType.V128)
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{
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argsCount++;
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}
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if (maxCallArgs < argsCount)
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{
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maxCallArgs = argsCount;
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}
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// Copy values to registers expected by the function
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// being called, as mandated by the ABI.
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if (callConv == CallConvName.Windows)
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{
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node = HandleCallWindowsAbi(block.Operations, stackAlloc, node, operation);
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}
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else /* if (callConv == CallConvName.SystemV) */
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{
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node = HandleCallSystemVAbi(block.Operations, node, operation);
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}
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break;
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case Instruction.ConvertToFPUI:
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HandleConvertToFPUI(block.Operations, node, operation);
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break;
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case Instruction.LoadArgument:
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if (callConv == CallConvName.Windows)
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{
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HandleLoadArgumentWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
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}
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else /* if (callConv == CallConvName.SystemV) */
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{
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HandleLoadArgumentSystemVAbi(cctx, block.Operations, node, preservedArgs, operation);
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}
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break;
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case Instruction.Negate:
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if (!operation.GetSource(0).Type.IsInteger())
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{
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node = HandleNegate(block.Operations, node, operation);
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}
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break;
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case Instruction.Return:
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if (callConv == CallConvName.Windows)
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{
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HandleReturnWindowsAbi(cctx, block.Operations, node, preservedArgs, operation);
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}
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else /* if (callConv == CallConvName.SystemV) */
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{
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HandleReturnSystemVAbi(block.Operations, node, operation);
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}
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break;
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case Instruction.Tailcall:
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if (callConv == CallConvName.Windows)
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{
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HandleTailcallWindowsAbi(block.Operations, stackAlloc, node, operation);
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}
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else
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{
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HandleTailcallSystemVAbi(block.Operations, stackAlloc, node, operation);
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}
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break;
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case Instruction.VectorInsert8:
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if (!HardwareCapabilities.SupportsSse41)
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{
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node = HandleVectorInsert8(block.Operations, node, operation);
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}
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break;
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}
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}
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}
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}
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private static void HandleConstantCopy(IntrusiveList<Node> nodes, Node node, Operation operation)
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{
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if (operation.SourcesCount == 0 || IsIntrinsic(operation.Instruction))
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{
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return;
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}
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Instruction inst = operation.Instruction;
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Operand src1 = operation.GetSource(0);
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Operand src2;
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if (src1.Kind == OperandKind.Constant)
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{
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if (!src1.Type.IsInteger())
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{
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// Handle non-integer types (FP32, FP64 and V128).
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// For instructions without an immediate operand, we do the following:
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// - Insert a copy with the constant value (as integer) to a GPR.
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// - Insert a copy from the GPR to a XMM register.
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// - Replace the constant use with the XMM register.
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src1 = AddXmmCopy(nodes, node, src1);
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operation.SetSource(0, src1);
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}
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else if (!HasConstSrc1(inst))
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{
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// Handle integer types.
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// Most ALU instructions accepts a 32-bits immediate on the second operand.
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// We need to ensure the following:
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// - If the constant is on operand 1, we need to move it.
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// -- But first, we try to swap operand 1 and 2 if the instruction is commutative.
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// -- Doing so may allow us to encode the constant as operand 2 and avoid a copy.
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// - If the constant is on operand 2, we check if the instruction supports it,
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// if not, we also add a copy. 64-bits constants are usually not supported.
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if (IsCommutative(inst))
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{
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src2 = operation.GetSource(1);
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Operand temp = src1;
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src1 = src2;
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src2 = temp;
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operation.SetSource(0, src1);
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operation.SetSource(1, src2);
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}
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if (src1.Kind == OperandKind.Constant)
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{
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src1 = AddCopy(nodes, node, src1);
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operation.SetSource(0, src1);
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}
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}
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}
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if (operation.SourcesCount < 2)
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{
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return;
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}
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src2 = operation.GetSource(1);
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if (src2.Kind == OperandKind.Constant)
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{
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if (!src2.Type.IsInteger())
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{
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src2 = AddXmmCopy(nodes, node, src2);
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operation.SetSource(1, src2);
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}
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else if (!HasConstSrc2(inst) || CodeGenCommon.IsLongConst(src2))
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{
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src2 = AddCopy(nodes, node, src2);
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operation.SetSource(1, src2);
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}
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}
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}
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private static Node HandleFixedRegisterCopy(IntrusiveList<Node> nodes, Node node, Operation operation)
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{
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Operand dest = operation.Destination;
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switch (operation.Instruction)
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{
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case Instruction.CompareAndSwap:
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{
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OperandType type = operation.GetSource(1).Type;
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if (type == OperandType.V128)
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{
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// Handle the many restrictions of the compare and exchange (16 bytes) instruction:
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// - The expected value should be in RDX:RAX.
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// - The new value to be written should be in RCX:RBX.
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// - The value at the memory location is loaded to RDX:RAX.
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void SplitOperand(Operand source, Operand lr, Operand hr)
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{
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nodes.AddBefore(node, new Operation(Instruction.VectorExtract, lr, source, Const(0)));
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nodes.AddBefore(node, new Operation(Instruction.VectorExtract, hr, source, Const(1)));
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}
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Operand rax = Gpr(X86Register.Rax, OperandType.I64);
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Operand rbx = Gpr(X86Register.Rbx, OperandType.I64);
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Operand rcx = Gpr(X86Register.Rcx, OperandType.I64);
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Operand rdx = Gpr(X86Register.Rdx, OperandType.I64);
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SplitOperand(operation.GetSource(1), rax, rdx);
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SplitOperand(operation.GetSource(2), rbx, rcx);
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node = nodes.AddAfter(node, new Operation(Instruction.VectorCreateScalar, dest, rax));
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node = nodes.AddAfter(node, new Operation(Instruction.VectorInsert, dest, dest, rdx, Const(1)));
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operation.SetDestinations(new Operand[] { rdx, rax });
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operation.SetSources(new Operand[] { operation.GetSource(0), rdx, rax, rcx, rbx });
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}
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else
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{
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// Handle the many restrictions of the compare and exchange (32/64) instruction:
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// - The expected value should be in (E/R)AX.
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// - The value at the memory location is loaded to (E/R)AX.
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Operand expected = operation.GetSource(1);
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Operand rax = Gpr(X86Register.Rax, expected.Type);
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nodes.AddBefore(node, new Operation(Instruction.Copy, rax, expected));
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operation.SetSources(new Operand[] { operation.GetSource(0), rax, operation.GetSource(2) });
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node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, rax));
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operation.Destination = rax;
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}
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break;
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}
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case Instruction.CpuId:
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{
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// Handle the many restrictions of the CPU Id instruction:
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// - EAX controls the information returned by this instruction.
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// - When EAX is 1, feature information is returned.
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// - The information is written to registers EAX, EBX, ECX and EDX.
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Debug.Assert(dest.Type == OperandType.I64);
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Operand eax = Gpr(X86Register.Rax, OperandType.I32);
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Operand ebx = Gpr(X86Register.Rbx, OperandType.I32);
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Operand ecx = Gpr(X86Register.Rcx, OperandType.I32);
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Operand edx = Gpr(X86Register.Rdx, OperandType.I32);
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// Value 0x01 = Version, family and feature information.
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nodes.AddBefore(node, new Operation(Instruction.Copy, eax, Const(1)));
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// Copy results to the destination register.
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// The values are split into 2 32-bits registers, we merge them
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// into a single 64-bits register.
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Operand rcx = Gpr(X86Register.Rcx, OperandType.I64);
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node = nodes.AddAfter(node, new Operation(Instruction.ZeroExtend32, dest, edx));
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node = nodes.AddAfter(node, new Operation(Instruction.ShiftLeft, dest, dest, Const(32)));
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node = nodes.AddAfter(node, new Operation(Instruction.BitwiseOr, dest, dest, rcx));
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operation.SetDestinations(new Operand[] { eax, ebx, ecx, edx });
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operation.SetSources(new Operand[] { eax });
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break;
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}
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case Instruction.Divide:
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case Instruction.DivideUI:
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{
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// Handle the many restrictions of the division instructions:
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// - The dividend is always in RDX:RAX.
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// - The result is always in RAX.
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// - Additionally it also writes the remainder in RDX.
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if (dest.Type.IsInteger())
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{
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Operand src1 = operation.GetSource(0);
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Operand rax = Gpr(X86Register.Rax, src1.Type);
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Operand rdx = Gpr(X86Register.Rdx, src1.Type);
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nodes.AddBefore(node, new Operation(Instruction.Copy, rax, src1));
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nodes.AddBefore(node, new Operation(Instruction.Clobber, rdx));
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node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, rax));
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operation.SetDestinations(new Operand[] { rdx, rax });
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operation.SetSources(new Operand[] { rdx, rax, operation.GetSource(1) });
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operation.Destination = rax;
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}
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break;
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}
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case Instruction.Extended:
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{
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IntrinsicOperation intrinOp = (IntrinsicOperation)operation;
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// BLENDVPD, BLENDVPS, PBLENDVB last operand is always implied to be XMM0 when VEX is not supported.
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if ((intrinOp.Intrinsic == Intrinsic.X86Blendvpd ||
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intrinOp.Intrinsic == Intrinsic.X86Blendvps ||
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intrinOp.Intrinsic == Intrinsic.X86Pblendvb) &&
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!HardwareCapabilities.SupportsVexEncoding)
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{
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Operand xmm0 = Xmm(X86Register.Xmm0, OperandType.V128);
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nodes.AddBefore(node, new Operation(Instruction.Copy, xmm0, operation.GetSource(2)));
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operation.SetSource(2, xmm0);
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}
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break;
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}
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case Instruction.Multiply64HighSI:
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case Instruction.Multiply64HighUI:
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{
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// Handle the many restrictions of the i64 * i64 = i128 multiply instructions:
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// - The multiplicand is always in RAX.
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// - The lower 64-bits of the result is always in RAX.
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// - The higher 64-bits of the result is always in RDX.
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Operand src1 = operation.GetSource(0);
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Operand rax = Gpr(X86Register.Rax, src1.Type);
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Operand rdx = Gpr(X86Register.Rdx, src1.Type);
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nodes.AddBefore(node, new Operation(Instruction.Copy, rax, src1));
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operation.SetSource(0, rax);
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node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, rdx));
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operation.SetDestinations(new Operand[] { rdx, rax });
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break;
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}
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case Instruction.RotateRight:
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case Instruction.ShiftLeft:
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case Instruction.ShiftRightSI:
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case Instruction.ShiftRightUI:
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{
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// The shift register is always implied to be CL (low 8-bits of RCX or ECX).
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if (operation.GetSource(1).Kind == OperandKind.LocalVariable)
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{
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Operand rcx = Gpr(X86Register.Rcx, OperandType.I32);
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nodes.AddBefore(node, new Operation(Instruction.Copy, rcx, operation.GetSource(1)));
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operation.SetSource(1, rcx);
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}
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break;
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}
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}
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return node;
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}
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private static Node HandleSameDestSrc1Copy(IntrusiveList<Node> nodes, Node node, Operation operation)
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{
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if (operation.Destination == null || operation.SourcesCount == 0)
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{
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return node;
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}
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Instruction inst = operation.Instruction;
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Operand dest = operation.Destination;
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Operand src1 = operation.GetSource(0);
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// The multiply instruction (that maps to IMUL) is somewhat special, it has
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// a three operand form where the second source is a immediate value.
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bool threeOperandForm = inst == Instruction.Multiply && operation.GetSource(1).Kind == OperandKind.Constant;
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if (IsSameOperandDestSrc1(operation) && src1.Kind == OperandKind.LocalVariable && !threeOperandForm)
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{
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bool useNewLocal = false;
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for (int srcIndex = 1; srcIndex < operation.SourcesCount; srcIndex++)
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{
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if (operation.GetSource(srcIndex) == dest)
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{
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useNewLocal = true;
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break;
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}
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}
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|
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if (useNewLocal)
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{
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// Dest is being used as some source already, we need to use a new
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// local to store the temporary value, otherwise the value on dest
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// local would be overwritten.
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Operand temp = Local(dest.Type);
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nodes.AddBefore(node, new Operation(Instruction.Copy, temp, src1));
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operation.SetSource(0, temp);
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node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, temp));
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operation.Destination = temp;
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}
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else
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{
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nodes.AddBefore(node, new Operation(Instruction.Copy, dest, src1));
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operation.SetSource(0, dest);
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}
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}
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else if (inst == Instruction.ConditionalSelect)
|
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{
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Operand src2 = operation.GetSource(1);
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Operand src3 = operation.GetSource(2);
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if (src1 == dest || src2 == dest)
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{
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Operand temp = Local(dest.Type);
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nodes.AddBefore(node, new Operation(Instruction.Copy, temp, src3));
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operation.SetSource(2, temp);
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node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, temp));
|
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|
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operation.Destination = temp;
|
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}
|
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else
|
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{
|
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nodes.AddBefore(node, new Operation(Instruction.Copy, dest, src3));
|
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|
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operation.SetSource(2, dest);
|
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}
|
|
}
|
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|
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return node;
|
|
}
|
|
|
|
private static Node HandleConvertToFPUI(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
// Unsigned integer to FP conversions are not supported on X86.
|
|
// We need to turn them into signed integer to FP conversions, and
|
|
// adjust the final result.
|
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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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Debug.Assert(source.Type.IsInteger(), $"Invalid source type \"{source.Type}\".");
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|
|
Node currentNode = node;
|
|
|
|
if (source.Type == OperandType.I32)
|
|
{
|
|
// For 32-bits integers, we can just zero-extend to 64-bits,
|
|
// and then use the 64-bits signed conversion instructions.
|
|
Operand zex = Local(OperandType.I64);
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ZeroExtend32, zex, source));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ConvertToFP, dest, zex));
|
|
}
|
|
else /* if (source.Type == OperandType.I64) */
|
|
{
|
|
// For 64-bits integers, we need to do the following:
|
|
// - Ensure that the integer has the most significant bit clear.
|
|
// -- This can be done by shifting the value right by 1, that is, dividing by 2.
|
|
// -- The least significant bit is lost in this case though.
|
|
// - We can then convert the shifted value with a signed integer instruction.
|
|
// - The result still needs to be corrected after that.
|
|
// -- First, we need to multiply the result by 2, as we divided it by 2 before.
|
|
// --- This can be done efficiently by adding the result to itself.
|
|
// -- Then, we need to add the least significant bit that was shifted out.
|
|
// --- We can convert the least significant bit to float, and add it to the result.
|
|
Operand lsb = Local(OperandType.I64);
|
|
Operand half = Local(OperandType.I64);
|
|
|
|
Operand lsbF = Local(dest.Type);
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Copy, lsb, source));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Copy, half, source));
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.BitwiseAnd, lsb, lsb, Const(1L)));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ShiftRightUI, half, half, Const(1)));
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ConvertToFP, lsbF, lsb));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ConvertToFP, dest, half));
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Add, dest, dest, dest));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Add, dest, dest, lsbF));
|
|
}
|
|
|
|
Delete(nodes, currentNode, operation);
|
|
|
|
return node;
|
|
}
|
|
|
|
private static Node HandleNegate(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
// There's no SSE FP negate instruction, so we need to transform that into
|
|
// a XOR of the value to be negated with a mask with the highest bit set.
|
|
// This also produces -0 for a negation of the value 0.
|
|
Operand dest = operation.Destination;
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(dest.Type == OperandType.FP32 ||
|
|
dest.Type == OperandType.FP64, $"Invalid destination type \"{dest.Type}\".");
|
|
|
|
Node currentNode = node;
|
|
|
|
Operand res = Local(dest.Type);
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.VectorOne, res));
|
|
|
|
if (dest.Type == OperandType.FP32)
|
|
{
|
|
node = nodes.AddAfter(node, new IntrinsicOperation(Intrinsic.X86Pslld, res, res, Const(31)));
|
|
}
|
|
else /* if (dest.Type == OperandType.FP64) */
|
|
{
|
|
node = nodes.AddAfter(node, new IntrinsicOperation(Intrinsic.X86Psllq, res, res, Const(63)));
|
|
}
|
|
|
|
node = nodes.AddAfter(node, new IntrinsicOperation(Intrinsic.X86Xorps, res, res, source));
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Copy, dest, res));
|
|
|
|
Delete(nodes, currentNode, operation);
|
|
|
|
return node;
|
|
}
|
|
|
|
private static Node HandleVectorInsert8(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
// Handle vector insertion, when SSE 4.1 is not supported.
|
|
Operand dest = operation.Destination;
|
|
Operand src1 = operation.GetSource(0); // Vector
|
|
Operand src2 = operation.GetSource(1); // Value
|
|
Operand src3 = operation.GetSource(2); // Index
|
|
|
|
Debug.Assert(src3.Kind == OperandKind.Constant);
|
|
|
|
byte index = src3.AsByte();
|
|
|
|
Debug.Assert(index < 16);
|
|
|
|
Node currentNode = node;
|
|
|
|
Operand temp1 = Local(OperandType.I32);
|
|
Operand temp2 = Local(OperandType.I32);
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.Copy, temp2, src2));
|
|
|
|
Operation vextOp = new Operation(Instruction.VectorExtract16, temp1, src1, Const(index >> 1));
|
|
|
|
node = nodes.AddAfter(node, vextOp);
|
|
|
|
if ((index & 1) != 0)
|
|
{
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ZeroExtend8, temp1, temp1));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ShiftLeft, temp2, temp2, Const(8)));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.BitwiseOr, temp1, temp1, temp2));
|
|
}
|
|
else
|
|
{
|
|
node = nodes.AddAfter(node, new Operation(Instruction.ZeroExtend8, temp2, temp2));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.BitwiseAnd, temp1, temp1, Const(0xff00)));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.BitwiseOr, temp1, temp1, temp2));
|
|
}
|
|
|
|
Operation vinsOp = new Operation(Instruction.VectorInsert16, dest, src1, temp1, Const(index >> 1));
|
|
|
|
node = nodes.AddAfter(node, vinsOp);
|
|
|
|
Delete(nodes, currentNode, operation);
|
|
|
|
return node;
|
|
}
|
|
|
|
private static Node HandleCallWindowsAbi(IntrusiveList<Node> nodes, StackAllocator stackAlloc, Node node, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
// Handle struct arguments.
|
|
int retArgs = 0;
|
|
|
|
int stackAllocOffset = 0;
|
|
|
|
int AllocateOnStack(int size)
|
|
{
|
|
// We assume that the stack allocator is initially empty (TotalSize = 0).
|
|
// Taking that into account, we can reuse the space allocated for other
|
|
// calls by keeping track of our own allocated size (stackAllocOffset).
|
|
// If the space allocated is not big enough, then we just expand it.
|
|
int offset = stackAllocOffset;
|
|
|
|
if (stackAllocOffset + size > stackAlloc.TotalSize)
|
|
{
|
|
stackAlloc.Allocate((stackAllocOffset + size) - stackAlloc.TotalSize);
|
|
}
|
|
|
|
stackAllocOffset += size;
|
|
|
|
return offset;
|
|
}
|
|
|
|
Operand arg0Reg = null;
|
|
|
|
if (dest != null && dest.Type == OperandType.V128)
|
|
{
|
|
int stackOffset = AllocateOnStack(dest.Type.GetSizeInBytes());
|
|
|
|
arg0Reg = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
|
|
|
|
Operation allocOp = new Operation(Instruction.StackAlloc, arg0Reg, Const(stackOffset));
|
|
|
|
nodes.AddBefore(node, allocOp);
|
|
|
|
retArgs = 1;
|
|
}
|
|
|
|
int argsCount = operation.SourcesCount - 1;
|
|
|
|
int maxArgs = CallingConvention.GetArgumentsOnRegsCount() - retArgs;
|
|
|
|
if (argsCount > maxArgs)
|
|
{
|
|
argsCount = maxArgs;
|
|
}
|
|
|
|
Operand[] sources = new Operand[1 + retArgs + argsCount];
|
|
|
|
sources[0] = operation.GetSource(0);
|
|
|
|
if (arg0Reg != null)
|
|
{
|
|
sources[1] = arg0Reg;
|
|
}
|
|
|
|
for (int index = 1; index < operation.SourcesCount; index++)
|
|
{
|
|
Operand source = operation.GetSource(index);
|
|
|
|
if (source.Type == OperandType.V128)
|
|
{
|
|
Operand stackAddr = Local(OperandType.I64);
|
|
|
|
int stackOffset = AllocateOnStack(source.Type.GetSizeInBytes());
|
|
|
|
nodes.AddBefore(node, new Operation(Instruction.StackAlloc, stackAddr, Const(stackOffset)));
|
|
|
|
Operation storeOp = new Operation(Instruction.Store, null, stackAddr, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, storeOp), storeOp);
|
|
|
|
operation.SetSource(index, stackAddr);
|
|
}
|
|
}
|
|
|
|
// Handle arguments passed on registers.
|
|
for (int index = 0; index < argsCount; index++)
|
|
{
|
|
Operand source = operation.GetSource(index + 1);
|
|
|
|
Operand argReg;
|
|
|
|
int argIndex = index + retArgs;
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
argReg = Gpr(CallingConvention.GetIntArgumentRegister(argIndex), source.Type);
|
|
}
|
|
else
|
|
{
|
|
argReg = Xmm(CallingConvention.GetVecArgumentRegister(argIndex), source.Type);
|
|
}
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
|
|
|
|
sources[1 + retArgs + index] = argReg;
|
|
}
|
|
|
|
// The remaining arguments (those that are not passed on registers)
|
|
// should be passed on the stack, we write them to the stack with "SpillArg".
|
|
for (int index = argsCount; index < operation.SourcesCount - 1; index++)
|
|
{
|
|
Operand source = operation.GetSource(index + 1);
|
|
|
|
Operand offset = new Operand((index + retArgs) * 8);
|
|
|
|
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, spillOp), spillOp);
|
|
}
|
|
|
|
if (dest != null)
|
|
{
|
|
if (dest.Type == OperandType.V128)
|
|
{
|
|
Operand retValueAddr = Local(OperandType.I64);
|
|
|
|
nodes.AddBefore(node, new Operation(Instruction.Copy, retValueAddr, arg0Reg));
|
|
|
|
Operation loadOp = new Operation(Instruction.Load, dest, retValueAddr);
|
|
|
|
node = nodes.AddAfter(node, loadOp);
|
|
|
|
operation.Destination = null;
|
|
}
|
|
else
|
|
{
|
|
Operand retReg = dest.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
|
|
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, dest, retReg);
|
|
|
|
node = nodes.AddAfter(node, copyOp);
|
|
|
|
operation.Destination = retReg;
|
|
}
|
|
}
|
|
|
|
operation.SetSources(sources);
|
|
|
|
return node;
|
|
}
|
|
|
|
private static Node HandleCallSystemVAbi(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
List<Operand> sources = new List<Operand>
|
|
{
|
|
operation.GetSource(0)
|
|
};
|
|
|
|
int argsCount = operation.SourcesCount - 1;
|
|
|
|
int intMax = CallingConvention.GetIntArgumentsOnRegsCount();
|
|
int vecMax = CallingConvention.GetVecArgumentsOnRegsCount();
|
|
|
|
int intCount = 0;
|
|
int vecCount = 0;
|
|
|
|
int stackOffset = 0;
|
|
|
|
for (int index = 0; index < argsCount; index++)
|
|
{
|
|
Operand source = operation.GetSource(index + 1);
|
|
|
|
bool passOnReg;
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
passOnReg = intCount < intMax;
|
|
}
|
|
else if (source.Type == OperandType.V128)
|
|
{
|
|
passOnReg = intCount + 1 < intMax;
|
|
}
|
|
else
|
|
{
|
|
passOnReg = vecCount < vecMax;
|
|
}
|
|
|
|
if (source.Type == OperandType.V128 && passOnReg)
|
|
{
|
|
// V128 is a struct, we pass each half on a GPR if possible.
|
|
Operand argReg = Gpr(CallingConvention.GetIntArgumentRegister(intCount++), OperandType.I64);
|
|
Operand argReg2 = Gpr(CallingConvention.GetIntArgumentRegister(intCount++), OperandType.I64);
|
|
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, argReg, source, Const(0)));
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, argReg2, source, Const(1)));
|
|
|
|
continue;
|
|
}
|
|
|
|
if (passOnReg)
|
|
{
|
|
Operand argReg = source.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntArgumentRegister(intCount++), source.Type)
|
|
: Xmm(CallingConvention.GetVecArgumentRegister(vecCount++), source.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
|
|
|
|
sources.Add(argReg);
|
|
}
|
|
else
|
|
{
|
|
Operand offset = new Operand(stackOffset);
|
|
|
|
Operation spillOp = new Operation(Instruction.SpillArg, null, offset, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, spillOp), spillOp);
|
|
|
|
stackOffset += source.Type.GetSizeInBytes();
|
|
}
|
|
}
|
|
|
|
if (dest != null)
|
|
{
|
|
if (dest.Type == OperandType.V128)
|
|
{
|
|
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
|
|
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
|
|
|
|
node = nodes.AddAfter(node, new Operation(Instruction.VectorCreateScalar, dest, retLReg));
|
|
node = nodes.AddAfter(node, new Operation(Instruction.VectorInsert, dest, dest, retHReg, Const(1)));
|
|
|
|
operation.Destination = null;
|
|
}
|
|
else
|
|
{
|
|
Operand retReg = dest.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
|
|
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, dest, retReg);
|
|
|
|
node = nodes.AddAfter(node, copyOp);
|
|
|
|
operation.Destination = retReg;
|
|
}
|
|
}
|
|
|
|
operation.SetSources(sources.ToArray());
|
|
|
|
return node;
|
|
}
|
|
|
|
private static void HandleTailcallSystemVAbi(IntrusiveList<Node> nodes, StackAllocator stackAlloc, Node node, Operation operation)
|
|
{
|
|
List<Operand> sources = new List<Operand>();
|
|
|
|
sources.Add(operation.GetSource(0));
|
|
|
|
int argsCount = operation.SourcesCount - 1;
|
|
|
|
int intMax = CallingConvention.GetIntArgumentsOnRegsCount();
|
|
int vecMax = CallingConvention.GetVecArgumentsOnRegsCount();
|
|
|
|
int intCount = 0;
|
|
int vecCount = 0;
|
|
|
|
// Handle arguments passed on registers.
|
|
for (int index = 0; index < argsCount; index++)
|
|
{
|
|
Operand source = operation.GetSource(1 + index);
|
|
|
|
bool passOnReg;
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
passOnReg = intCount + 1 < intMax;
|
|
}
|
|
else
|
|
{
|
|
passOnReg = vecCount < vecMax;
|
|
}
|
|
|
|
if (source.Type == OperandType.V128 && passOnReg)
|
|
{
|
|
// V128 is a struct, we pass each half on a GPR if possible.
|
|
Operand argReg = Gpr(CallingConvention.GetIntArgumentRegister(intCount++), OperandType.I64);
|
|
Operand argReg2 = Gpr(CallingConvention.GetIntArgumentRegister(intCount++), OperandType.I64);
|
|
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, argReg, source, Const(0)));
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, argReg2, source, Const(1)));
|
|
|
|
continue;
|
|
}
|
|
|
|
if (passOnReg)
|
|
{
|
|
Operand argReg = source.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntArgumentRegister(intCount++), source.Type)
|
|
: Xmm(CallingConvention.GetVecArgumentRegister(vecCount++), source.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
|
|
|
|
sources.Add(argReg);
|
|
}
|
|
else
|
|
{
|
|
throw new NotImplementedException("Spilling is not currently supported for tail calls. (too many arguments)");
|
|
}
|
|
}
|
|
|
|
// The target address must be on the return registers, since we
|
|
// don't return anything and it is guaranteed to not be a
|
|
// callee saved register (which would be trashed on the epilogue).
|
|
Operand retReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
|
|
|
|
Operation addrCopyOp = new Operation(Instruction.Copy, retReg, operation.GetSource(0));
|
|
|
|
nodes.AddBefore(node, addrCopyOp);
|
|
|
|
sources[0] = retReg;
|
|
|
|
operation.SetSources(sources.ToArray());
|
|
}
|
|
|
|
private static void HandleTailcallWindowsAbi(IntrusiveList<Node> nodes, StackAllocator stackAlloc, Node node, Operation operation)
|
|
{
|
|
int argsCount = operation.SourcesCount - 1;
|
|
|
|
int maxArgs = CallingConvention.GetArgumentsOnRegsCount();
|
|
|
|
if (argsCount > maxArgs)
|
|
{
|
|
throw new NotImplementedException("Spilling is not currently supported for tail calls. (too many arguments)");
|
|
}
|
|
|
|
Operand[] sources = new Operand[1 + argsCount];
|
|
|
|
// Handle arguments passed on registers.
|
|
for (int index = 0; index < argsCount; index++)
|
|
{
|
|
Operand source = operation.GetSource(1 + index);
|
|
|
|
Operand argReg = source.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntArgumentRegister(index), source.Type)
|
|
: Xmm(CallingConvention.GetVecArgumentRegister(index), source.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, argReg, source);
|
|
|
|
HandleConstantCopy(nodes, nodes.AddBefore(node, copyOp), copyOp);
|
|
|
|
sources[1 + index] = argReg;
|
|
}
|
|
|
|
// The target address must be on the return registers, since we
|
|
// don't return anything and it is guaranteed to not be a
|
|
// callee saved register (which would be trashed on the epilogue).
|
|
Operand retReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
|
|
|
|
Operation addrCopyOp = new Operation(Instruction.Copy, retReg, operation.GetSource(0));
|
|
|
|
nodes.AddBefore(node, addrCopyOp);
|
|
|
|
sources[0] = retReg;
|
|
|
|
operation.SetSources(sources);
|
|
}
|
|
|
|
private static void HandleLoadArgumentWindowsAbi(
|
|
CompilerContext cctx,
|
|
IntrusiveList<Node> nodes,
|
|
Node node,
|
|
Operand[] preservedArgs,
|
|
Operation operation)
|
|
{
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(source.Kind == OperandKind.Constant, "Non-constant LoadArgument source kind.");
|
|
|
|
int retArgs = cctx.FuncReturnType == OperandType.V128 ? 1 : 0;
|
|
|
|
int index = source.AsInt32() + retArgs;
|
|
|
|
if (index < CallingConvention.GetArgumentsOnRegsCount())
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
if (preservedArgs[index] == null)
|
|
{
|
|
Operand argReg, pArg;
|
|
|
|
if (dest.Type.IsInteger())
|
|
{
|
|
argReg = Gpr(CallingConvention.GetIntArgumentRegister(index), dest.Type);
|
|
|
|
pArg = Local(dest.Type);
|
|
}
|
|
else if (dest.Type == OperandType.V128)
|
|
{
|
|
argReg = Gpr(CallingConvention.GetIntArgumentRegister(index), OperandType.I64);
|
|
|
|
pArg = Local(OperandType.I64);
|
|
}
|
|
else
|
|
{
|
|
argReg = Xmm(CallingConvention.GetVecArgumentRegister(index), dest.Type);
|
|
|
|
pArg = Local(dest.Type);
|
|
}
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, pArg, argReg);
|
|
|
|
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
|
|
|
|
preservedArgs[index] = pArg;
|
|
}
|
|
|
|
Operation argCopyOp = new Operation(dest.Type == OperandType.V128
|
|
? Instruction.Load
|
|
: Instruction.Copy, dest, preservedArgs[index]);
|
|
|
|
nodes.AddBefore(node, argCopyOp);
|
|
|
|
Delete(nodes, node, operation);
|
|
}
|
|
else
|
|
{
|
|
// TODO: Pass on stack.
|
|
}
|
|
}
|
|
|
|
private static void HandleLoadArgumentSystemVAbi(
|
|
CompilerContext cctx,
|
|
IntrusiveList<Node> nodes,
|
|
Node node,
|
|
Operand[] preservedArgs,
|
|
Operation operation)
|
|
{
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Debug.Assert(source.Kind == OperandKind.Constant, "Non-constant LoadArgument source kind.");
|
|
|
|
int index = source.AsInt32();
|
|
|
|
int intCount = 0;
|
|
int vecCount = 0;
|
|
|
|
for (int cIndex = 0; cIndex < index; cIndex++)
|
|
{
|
|
OperandType argType = cctx.FuncArgTypes[cIndex];
|
|
|
|
if (argType.IsInteger())
|
|
{
|
|
intCount++;
|
|
}
|
|
else if (argType == OperandType.V128)
|
|
{
|
|
intCount += 2;
|
|
}
|
|
else
|
|
{
|
|
vecCount++;
|
|
}
|
|
}
|
|
|
|
bool passOnReg;
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
passOnReg = intCount < CallingConvention.GetIntArgumentsOnRegsCount();
|
|
}
|
|
else if (source.Type == OperandType.V128)
|
|
{
|
|
passOnReg = intCount + 1 < CallingConvention.GetIntArgumentsOnRegsCount();
|
|
}
|
|
else
|
|
{
|
|
passOnReg = vecCount < CallingConvention.GetVecArgumentsOnRegsCount();
|
|
}
|
|
|
|
if (passOnReg)
|
|
{
|
|
Operand dest = operation.Destination;
|
|
|
|
if (preservedArgs[index] == null)
|
|
{
|
|
if (dest.Type == OperandType.V128)
|
|
{
|
|
// V128 is a struct, we pass each half on a GPR if possible.
|
|
Operand pArg = Local(OperandType.V128);
|
|
|
|
Operand argLReg = Gpr(CallingConvention.GetIntArgumentRegister(intCount), OperandType.I64);
|
|
Operand argHReg = Gpr(CallingConvention.GetIntArgumentRegister(intCount + 1), OperandType.I64);
|
|
|
|
Operation copyL = new Operation(Instruction.VectorCreateScalar, pArg, argLReg);
|
|
Operation copyH = new Operation(Instruction.VectorInsert, pArg, pArg, argHReg, Const(1));
|
|
|
|
cctx.Cfg.Entry.Operations.AddFirst(copyH);
|
|
cctx.Cfg.Entry.Operations.AddFirst(copyL);
|
|
|
|
preservedArgs[index] = pArg;
|
|
}
|
|
else
|
|
{
|
|
Operand pArg = Local(dest.Type);
|
|
|
|
Operand argReg = dest.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntArgumentRegister(intCount), dest.Type)
|
|
: Xmm(CallingConvention.GetVecArgumentRegister(vecCount), dest.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, pArg, argReg);
|
|
|
|
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
|
|
|
|
preservedArgs[index] = pArg;
|
|
}
|
|
}
|
|
|
|
Operation argCopyOp = new Operation(Instruction.Copy, dest, preservedArgs[index]);
|
|
|
|
nodes.AddBefore(node, argCopyOp);
|
|
|
|
Delete(nodes, node, operation);
|
|
}
|
|
else
|
|
{
|
|
// TODO: Pass on stack.
|
|
}
|
|
}
|
|
|
|
private static void HandleReturnWindowsAbi(
|
|
CompilerContext cctx,
|
|
IntrusiveList<Node> nodes,
|
|
Node node,
|
|
Operand[] preservedArgs,
|
|
Operation operation)
|
|
{
|
|
if (operation.SourcesCount == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Operand source = operation.GetSource(0);
|
|
|
|
Operand retReg;
|
|
|
|
if (source.Type.IsInteger())
|
|
{
|
|
retReg = Gpr(CallingConvention.GetIntReturnRegister(), source.Type);
|
|
}
|
|
else if (source.Type == OperandType.V128)
|
|
{
|
|
if (preservedArgs[0] == null)
|
|
{
|
|
Operand preservedArg = Local(OperandType.I64);
|
|
|
|
Operand arg0 = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, preservedArg, arg0);
|
|
|
|
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
|
|
|
|
preservedArgs[0] = preservedArg;
|
|
}
|
|
|
|
retReg = preservedArgs[0];
|
|
}
|
|
else
|
|
{
|
|
retReg = Xmm(CallingConvention.GetVecReturnRegister(), source.Type);
|
|
}
|
|
|
|
if (source.Type == OperandType.V128)
|
|
{
|
|
Operation retStoreOp = new Operation(Instruction.Store, null, retReg, source);
|
|
|
|
nodes.AddBefore(node, retStoreOp);
|
|
}
|
|
else
|
|
{
|
|
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source);
|
|
|
|
nodes.AddBefore(node, retCopyOp);
|
|
}
|
|
|
|
operation.SetSources(System.Array.Empty<Operand>());
|
|
}
|
|
|
|
private static void HandleReturnSystemVAbi(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
if (operation.SourcesCount == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Operand source = operation.GetSource(0);
|
|
|
|
if (source.Type == OperandType.V128)
|
|
{
|
|
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
|
|
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
|
|
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, retLReg, source, Const(0)));
|
|
nodes.AddBefore(node, new Operation(Instruction.VectorExtract, retHReg, source, Const(1)));
|
|
}
|
|
else
|
|
{
|
|
Operand retReg = source.Type.IsInteger()
|
|
? Gpr(CallingConvention.GetIntReturnRegister(), source.Type)
|
|
: Xmm(CallingConvention.GetVecReturnRegister(), source.Type);
|
|
|
|
Operation retCopyOp = new Operation(Instruction.Copy, retReg, source);
|
|
|
|
nodes.AddBefore(node, retCopyOp);
|
|
}
|
|
}
|
|
|
|
private static Operand AddXmmCopy(IntrusiveList<Node> nodes, Node node, Operand source)
|
|
{
|
|
Operand temp = Local(source.Type);
|
|
|
|
Operand intConst = AddCopy(nodes, node, GetIntConst(source));
|
|
|
|
Operation copyOp = new Operation(Instruction.VectorCreateScalar, temp, intConst);
|
|
|
|
nodes.AddBefore(node, copyOp);
|
|
|
|
return temp;
|
|
}
|
|
|
|
private static Operand AddCopy(IntrusiveList<Node> nodes, Node node, Operand source)
|
|
{
|
|
Operand temp = Local(source.Type);
|
|
|
|
Operation copyOp = new Operation(Instruction.Copy, temp, source);
|
|
|
|
nodes.AddBefore(node, copyOp);
|
|
|
|
return temp;
|
|
}
|
|
|
|
private static Operand GetIntConst(Operand value)
|
|
{
|
|
if (value.Type == OperandType.FP32)
|
|
{
|
|
return Const(value.AsInt32());
|
|
}
|
|
else if (value.Type == OperandType.FP64)
|
|
{
|
|
return Const(value.AsInt64());
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
private static void Delete(IntrusiveList<Node> nodes, Node node, Operation operation)
|
|
{
|
|
operation.Destination = null;
|
|
|
|
for (int index = 0; index < operation.SourcesCount; index++)
|
|
{
|
|
operation.SetSource(index, null);
|
|
}
|
|
|
|
nodes.Remove(node);
|
|
}
|
|
|
|
private static Operand Gpr(X86Register register, OperandType type)
|
|
{
|
|
return Register((int)register, RegisterType.Integer, type);
|
|
}
|
|
|
|
private static Operand Xmm(X86Register register, OperandType type)
|
|
{
|
|
return Register((int)register, RegisterType.Vector, type);
|
|
}
|
|
|
|
private static bool IsSameOperandDestSrc1(Operation operation)
|
|
{
|
|
switch (operation.Instruction)
|
|
{
|
|
case Instruction.Add:
|
|
case Instruction.Multiply:
|
|
case Instruction.Subtract:
|
|
return !HardwareCapabilities.SupportsVexEncoding || operation.Destination.Type.IsInteger();
|
|
|
|
case Instruction.BitwiseAnd:
|
|
case Instruction.BitwiseExclusiveOr:
|
|
case Instruction.BitwiseNot:
|
|
case Instruction.BitwiseOr:
|
|
case Instruction.ByteSwap:
|
|
case Instruction.Negate:
|
|
case Instruction.RotateRight:
|
|
case Instruction.ShiftLeft:
|
|
case Instruction.ShiftRightSI:
|
|
case Instruction.ShiftRightUI:
|
|
return true;
|
|
|
|
case Instruction.Divide:
|
|
return !HardwareCapabilities.SupportsVexEncoding && !operation.Destination.Type.IsInteger();
|
|
|
|
case Instruction.VectorInsert:
|
|
case Instruction.VectorInsert16:
|
|
case Instruction.VectorInsert8:
|
|
return !HardwareCapabilities.SupportsVexEncoding;
|
|
}
|
|
|
|
return IsVexSameOperandDestSrc1(operation);
|
|
}
|
|
|
|
private static bool IsVexSameOperandDestSrc1(Operation operation)
|
|
{
|
|
if (IsIntrinsic(operation.Instruction))
|
|
{
|
|
bool isUnary = operation.SourcesCount < 2;
|
|
|
|
bool hasVecDest = operation.Destination != null && operation.Destination.Type == OperandType.V128;
|
|
|
|
return !HardwareCapabilities.SupportsVexEncoding && !isUnary && hasVecDest;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static bool HasConstSrc1(Instruction inst)
|
|
{
|
|
switch (inst)
|
|
{
|
|
case Instruction.Copy:
|
|
case Instruction.LoadArgument:
|
|
case Instruction.Spill:
|
|
case Instruction.SpillArg:
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static bool HasConstSrc2(Instruction inst)
|
|
{
|
|
switch (inst)
|
|
{
|
|
case Instruction.Add:
|
|
case Instruction.BitwiseAnd:
|
|
case Instruction.BitwiseExclusiveOr:
|
|
case Instruction.BitwiseOr:
|
|
case Instruction.CompareEqual:
|
|
case Instruction.CompareGreater:
|
|
case Instruction.CompareGreaterOrEqual:
|
|
case Instruction.CompareGreaterOrEqualUI:
|
|
case Instruction.CompareGreaterUI:
|
|
case Instruction.CompareLess:
|
|
case Instruction.CompareLessOrEqual:
|
|
case Instruction.CompareLessOrEqualUI:
|
|
case Instruction.CompareLessUI:
|
|
case Instruction.CompareNotEqual:
|
|
case Instruction.Multiply:
|
|
case Instruction.RotateRight:
|
|
case Instruction.ShiftLeft:
|
|
case Instruction.ShiftRightSI:
|
|
case Instruction.ShiftRightUI:
|
|
case Instruction.Subtract:
|
|
case Instruction.VectorExtract:
|
|
case Instruction.VectorExtract16:
|
|
case Instruction.VectorExtract8:
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static bool IsCommutative(Instruction inst)
|
|
{
|
|
switch (inst)
|
|
{
|
|
case Instruction.Add:
|
|
case Instruction.BitwiseAnd:
|
|
case Instruction.BitwiseExclusiveOr:
|
|
case Instruction.BitwiseOr:
|
|
case Instruction.CompareEqual:
|
|
case Instruction.CompareNotEqual:
|
|
case Instruction.Multiply:
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static bool IsIntrinsic(Instruction inst)
|
|
{
|
|
return inst == Instruction.Extended;
|
|
}
|
|
}
|
|
} |