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CPU: Avoid argument value copies on the JIT (#4484)

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* Minor refactoring of the pre-allocator

* Avoid LoadArgument copies

* PPTC version bump
This commit is contained in:
gdkchan 2023-03-08 19:25:35 -03:00 committed by GitHub
parent b8556530f2
commit f0562b9c75
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6 changed files with 766 additions and 708 deletions
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86
ARMeilleure/CodeGen/Arm64/PreAllocator.cs
View file

@ -9,7 +9,7 @@ using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
namespace ARMeilleure.CodeGen.Arm64
{
class PreAllocator
static class PreAllocator
{
private class ConstantDict
{
@ -54,8 +54,8 @@ namespace ARMeilleure.CodeGen.Arm64
continue;
}
HandleConstantRegCopy(constants, block.Operations, node);
HandleDestructiveRegCopy(block.Operations, node);
InsertConstantRegCopies(constants, block.Operations, node);
InsertDestructiveRegCopies(block.Operations, node);
switch (node.Instruction)
{
@ -78,28 +78,28 @@ namespace ARMeilleure.CodeGen.Arm64
// Copy values to registers expected by the function
// being called, as mandated by the ABI.
HandleCall(constants, block.Operations, node);
InsertCallCopies(constants, block.Operations, node);
break;
case Instruction.CompareAndSwap:
case Instruction.CompareAndSwap16:
case Instruction.CompareAndSwap8:
nextNode = HandleCompareAndSwap(block.Operations, node);
nextNode = GenerateCompareAndSwap(block.Operations, node);
break;
case Instruction.LoadArgument:
nextNode = HandleLoadArgument(cctx, ref buffer, block.Operations, preservedArgs, node);
nextNode = InsertLoadArgumentCopy(cctx, ref buffer, block.Operations, preservedArgs, node);
break;
case Instruction.Return:
HandleReturn(block.Operations, node);
InsertReturnCopy(block.Operations, node);
break;
case Instruction.Tailcall:
HandleTailcall(constants, block.Operations, stackAlloc, node, node);
InsertTailcallCopies(constants, block.Operations, stackAlloc, node, node);
break;
}
}
}
}
private static void HandleConstantRegCopy(ConstantDict constants, IntrusiveList<Operation> nodes, Operation node)
private static void InsertConstantRegCopies(ConstantDict constants, IntrusiveList<Operation> nodes, Operation node)
{
if (node.SourcesCount == 0 || IsIntrinsicWithConst(node))
{
@ -211,7 +211,7 @@ namespace ARMeilleure.CodeGen.Arm64
}
}
private static void HandleDestructiveRegCopy(IntrusiveList<Operation> nodes, Operation node)
private static void InsertDestructiveRegCopies(IntrusiveList<Operation> nodes, Operation node)
{
if (node.Destination == default || node.SourcesCount == 0)
{
@ -259,7 +259,7 @@ namespace ARMeilleure.CodeGen.Arm64
}
}
private static void HandleCall(ConstantDict constants, IntrusiveList<Operation> nodes, Operation node)
private static void InsertCallCopies(ConstantDict constants, IntrusiveList<Operation> nodes, Operation node)
{
Operation operation = node;
@ -319,7 +319,7 @@ namespace ARMeilleure.CodeGen.Arm64
Operation copyOp = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(constants, nodes, nodes.AddBefore(node, copyOp));
InsertConstantRegCopies(constants, nodes, nodes.AddBefore(node, copyOp));
sources.Add(argReg);
}
@ -329,7 +329,7 @@ namespace ARMeilleure.CodeGen.Arm64
Operation spillOp = Operation(Instruction.SpillArg, default, offset, source);
HandleConstantRegCopy(constants, nodes, nodes.AddBefore(node, spillOp));
InsertConstantRegCopies(constants, nodes, nodes.AddBefore(node, spillOp));
stackOffset += source.Type.GetSizeInBytes();
}
@ -364,7 +364,7 @@ namespace ARMeilleure.CodeGen.Arm64
operation.SetSources(sources.ToArray());
}
private static void HandleTailcall(
private static void InsertTailcallCopies(
ConstantDict constants,
IntrusiveList<Operation> nodes,
StackAllocator stackAlloc,
@ -420,7 +420,7 @@ namespace ARMeilleure.CodeGen.Arm64
Operation copyOp = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(constants, nodes, nodes.AddBefore(node, copyOp));
InsertConstantRegCopies(constants, nodes, nodes.AddBefore(node, copyOp));
sources.Add(argReg);
}
@ -444,7 +444,7 @@ namespace ARMeilleure.CodeGen.Arm64
operation.SetSources(sources.ToArray());
}
private static Operation HandleCompareAndSwap(IntrusiveList<Operation> nodes, Operation node)
private static Operation GenerateCompareAndSwap(IntrusiveList<Operation> nodes, Operation node)
{
Operand expected = node.GetSource(1);
@ -508,7 +508,7 @@ namespace ARMeilleure.CodeGen.Arm64
return node.ListNext;
}
private static void HandleReturn(IntrusiveList<Operation> nodes, Operation node)
private static void InsertReturnCopy(IntrusiveList<Operation> nodes, Operation node)
{
if (node.SourcesCount == 0)
{
@ -537,7 +537,7 @@ namespace ARMeilleure.CodeGen.Arm64
}
}
private static Operation HandleLoadArgument(
private static Operation InsertLoadArgumentCopy(
CompilerContext cctx,
ref Span<Operation> buffer,
IntrusiveList<Operation> nodes,
@ -629,7 +629,7 @@ namespace ARMeilleure.CodeGen.Arm64
if (dest.AssignmentsCount == 1)
{
// Let's propagate the argument if we can to avoid copies.
Propagate(ref buffer, dest, preservedArgs[index]);
PreAllocatorCommon.Propagate(ref buffer, dest, preservedArgs[index]);
nextNode = node.ListNext;
}
else
@ -648,54 +648,6 @@ namespace ARMeilleure.CodeGen.Arm64
}
}
private static void Propagate(ref Span<Operation> buffer, Operand dest, Operand value)
{
ReadOnlySpan<Operation> uses = dest.GetUses(ref buffer);
foreach (Operation use in uses)
{
for (int srcIndex = 0; srcIndex < use.SourcesCount; srcIndex++)
{
Operand useSrc = use.GetSource(srcIndex);
if (useSrc == dest)
{
use.SetSource(srcIndex, value);
}
else if (useSrc.Kind == OperandKind.Memory)
{
MemoryOperand memoryOp = useSrc.GetMemory();
Operand baseAddr = memoryOp.BaseAddress;
Operand index = memoryOp.Index;
bool changed = false;
if (baseAddr == dest)
{
baseAddr = value;
changed = true;
}
if (index == dest)
{
index = value;
changed = true;
}
if (changed)
{
use.SetSource(srcIndex, MemoryOp(
useSrc.Type,
baseAddr,
index,
memoryOp.Scale,
memoryOp.Displacement));
}
}
}
}
}
private static Operand AddFloatConstantCopy(
ConstantDict constants,
IntrusiveList<Operation> nodes,

57
ARMeilleure/CodeGen/PreAllocatorCommon.cs Normal file
View file

@ -0,0 +1,57 @@
using ARMeilleure.IntermediateRepresentation;
using System;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
namespace ARMeilleure.CodeGen
{
static class PreAllocatorCommon
{
public static void Propagate(ref Span<Operation> buffer, Operand dest, Operand value)
{
ReadOnlySpan<Operation> uses = dest.GetUses(ref buffer);
foreach (Operation use in uses)
{
for (int srcIndex = 0; srcIndex < use.SourcesCount; srcIndex++)
{
Operand useSrc = use.GetSource(srcIndex);
if (useSrc == dest)
{
use.SetSource(srcIndex, value);
}
else if (useSrc.Kind == OperandKind.Memory)
{
MemoryOperand memoryOp = useSrc.GetMemory();
Operand baseAddr = memoryOp.BaseAddress;
Operand index = memoryOp.Index;
bool changed = false;
if (baseAddr == dest)
{
baseAddr = value;
changed = true;
}
if (index == dest)
{
index = value;
changed = true;
}
if (changed)
{
use.SetSource(srcIndex, MemoryOp(
useSrc.Type,
baseAddr,
index,
memoryOp.Scale,
memoryOp.Displacement));
}
}
}
}
}
}
}

668
ARMeilleure/CodeGen/X86/PreAllocator.cs
View file

@ -2,19 +2,20 @@ using ARMeilleure.CodeGen.RegisterAllocators;
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
namespace ARMeilleure.CodeGen.X86
{
static class PreAllocator
class PreAllocator
{
public static void RunPass(CompilerContext cctx, StackAllocator stackAlloc, out int maxCallArgs)
{
maxCallArgs = -1;
Span<Operation> buffer = default;
CallConvName callConv = CallingConvention.GetCurrentCallConv();
Operand[] preservedArgs = new Operand[CallingConvention.GetArgumentsOnRegsCount()];
@ -32,9 +33,9 @@ namespace ARMeilleure.CodeGen.X86
continue;
}
HandleConstantRegCopy(block.Operations, node);
HandleDestructiveRegCopy(block.Operations, node);
HandleConstrainedRegCopy(block.Operations, node);
InsertConstantRegCopies(block.Operations, node);
InsertDestructiveRegCopies(block.Operations, node);
InsertConstrainedRegCopies(block.Operations, node);
switch (node.Instruction)
{
@ -59,62 +60,62 @@ namespace ARMeilleure.CodeGen.X86
// being called, as mandated by the ABI.
if (callConv == CallConvName.Windows)
{
HandleCallWindowsAbi(block.Operations, stackAlloc, node);
PreAllocatorWindows.InsertCallCopies(block.Operations, stackAlloc, node);
}
else /* if (callConv == CallConvName.SystemV) */
{
HandleCallSystemVAbi(block.Operations, node);
PreAllocatorSystemV.InsertCallCopies(block.Operations, node);
}
break;
case Instruction.ConvertToFPUI:
HandleConvertToFPUI(block.Operations, node);
GenerateConvertToFPUI(block.Operations, node);
break;
case Instruction.LoadArgument:
if (callConv == CallConvName.Windows)
{
nextNode = HandleLoadArgumentWindowsAbi(cctx, block.Operations, preservedArgs, node);
nextNode = PreAllocatorWindows.InsertLoadArgumentCopy(cctx, ref buffer, block.Operations, preservedArgs, node);
}
else /* if (callConv == CallConvName.SystemV) */
{
nextNode = HandleLoadArgumentSystemVAbi(cctx, block.Operations, preservedArgs, node);
nextNode = PreAllocatorSystemV.InsertLoadArgumentCopy(cctx, ref buffer, block.Operations, preservedArgs, node);
}
break;
case Instruction.Negate:
if (!node.GetSource(0).Type.IsInteger())
{
HandleNegate(block.Operations, node);
GenerateNegate(block.Operations, node);
}
break;
case Instruction.Return:
if (callConv == CallConvName.Windows)
{
HandleReturnWindowsAbi(cctx, block.Operations, preservedArgs, node);
PreAllocatorWindows.InsertReturnCopy(cctx, block.Operations, preservedArgs, node);
}
else /* if (callConv == CallConvName.SystemV) */
{
HandleReturnSystemVAbi(block.Operations, node);
PreAllocatorSystemV.InsertReturnCopy(block.Operations, node);
}
break;
case Instruction.Tailcall:
if (callConv == CallConvName.Windows)
{
HandleTailcallWindowsAbi(block.Operations, stackAlloc, node);
PreAllocatorWindows.InsertTailcallCopies(block.Operations, stackAlloc, node);
}
else
{
HandleTailcallSystemVAbi(block.Operations, stackAlloc, node);
PreAllocatorSystemV.InsertTailcallCopies(block.Operations, stackAlloc, node);
}
break;
case Instruction.VectorInsert8:
if (!HardwareCapabilities.SupportsSse41)
{
HandleVectorInsert8(block.Operations, node);
GenerateVectorInsert8(block.Operations, node);
}
break;
@ -131,7 +132,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
private static void HandleConstantRegCopy(IntrusiveList<Operation> nodes, Operation node)
protected static void InsertConstantRegCopies(IntrusiveList<Operation> nodes, Operation node)
{
if (node.SourcesCount == 0 || IsXmmIntrinsic(node))
{
@ -212,7 +213,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
private static void HandleConstrainedRegCopy(IntrusiveList<Operation> nodes, Operation node)
protected static void InsertConstrainedRegCopies(IntrusiveList<Operation> nodes, Operation node)
{
Operand dest = node.Destination;
@ -369,7 +370,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
private static void HandleDestructiveRegCopy(IntrusiveList<Operation> nodes, Operation node)
protected static void InsertDestructiveRegCopies(IntrusiveList<Operation> nodes, Operation node)
{
if (node.Destination == default || node.SourcesCount == 0)
{
@ -447,7 +448,7 @@ namespace ARMeilleure.CodeGen.X86
}
}
private static void HandleConvertToFPUI(IntrusiveList<Operation> nodes, Operation node)
private static void GenerateConvertToFPUI(IntrusiveList<Operation> nodes, Operation node)
{
// Unsigned integer to FP conversions are not supported on X86.
// We need to turn them into signed integer to FP conversions, and
@ -501,7 +502,7 @@ namespace ARMeilleure.CodeGen.X86
Delete(nodes, currentNode);
}
private static void HandleNegate(IntrusiveList<Operation> nodes, Operation node)
private static void GenerateNegate(IntrusiveList<Operation> nodes, Operation node)
{
// 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.
@ -534,7 +535,7 @@ namespace ARMeilleure.CodeGen.X86
Delete(nodes, currentNode);
}
private static void HandleVectorInsert8(IntrusiveList<Operation> nodes, Operation node)
private static void GenerateVectorInsert8(IntrusiveList<Operation> nodes, Operation node)
{
// Handle vector insertion, when SSE 4.1 is not supported.
Operand dest = node.Destination;
@ -579,620 +580,7 @@ namespace ARMeilleure.CodeGen.X86
Delete(nodes, currentNode);
}
private static void HandleCallWindowsAbi(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
Operand dest = node.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 = default;
if (dest != default && dest.Type == OperandType.V128)
{
int stackOffset = AllocateOnStack(dest.Type.GetSizeInBytes());
arg0Reg = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
Operation allocOp = Operation(Instruction.StackAlloc, arg0Reg, Const(stackOffset));
nodes.AddBefore(node, allocOp);
retArgs = 1;
}
int argsCount = node.SourcesCount - 1;
int maxArgs = CallingConvention.GetArgumentsOnRegsCount() - retArgs;
if (argsCount > maxArgs)
{
argsCount = maxArgs;
}
Operand[] sources = new Operand[1 + retArgs + argsCount];
sources[0] = node.GetSource(0);
if (arg0Reg != default)
{
sources[1] = arg0Reg;
}
for (int index = 1; index < node.SourcesCount; index++)
{
Operand source = node.GetSource(index);
if (source.Type == OperandType.V128)
{
Operand stackAddr = Local(OperandType.I64);
int stackOffset = AllocateOnStack(source.Type.GetSizeInBytes());
nodes.AddBefore(node, Operation(Instruction.StackAlloc, stackAddr, Const(stackOffset)));
Operation storeOp = Operation(Instruction.Store, default, stackAddr, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, storeOp));
node.SetSource(index, stackAddr);
}
}
// Handle arguments passed on registers.
for (int index = 0; index < argsCount; index++)
{
Operand source = node.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 = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, 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 < node.SourcesCount - 1; index++)
{
Operand source = node.GetSource(index + 1);
Operand offset = Const((index + retArgs) * 8);
Operation spillOp = Operation(Instruction.SpillArg, default, offset, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, spillOp));
}
if (dest != default)
{
if (dest.Type == OperandType.V128)
{
Operand retValueAddr = Local(OperandType.I64);
nodes.AddBefore(node, Operation(Instruction.Copy, retValueAddr, arg0Reg));
Operation loadOp = Operation(Instruction.Load, dest, retValueAddr);
nodes.AddAfter(node, loadOp);
node.Destination = default;
}
else
{
Operand retReg = dest.Type.IsInteger()
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
Operation copyOp = Operation(Instruction.Copy, dest, retReg);
nodes.AddAfter(node, copyOp);
node.Destination = retReg;
}
}
node.SetSources(sources);
}
private static void HandleCallSystemVAbi(IntrusiveList<Operation> nodes, Operation node)
{
Operand dest = node.Destination;
List<Operand> sources = new List<Operand>
{
node.GetSource(0)
};
int argsCount = node.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 = node.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, Operation(Instruction.VectorExtract, argReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, copyOp));
sources.Add(argReg);
}
else
{
Operand offset = Const(stackOffset);
Operation spillOp = Operation(Instruction.SpillArg, default, offset, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, spillOp));
stackOffset += source.Type.GetSizeInBytes();
}
}
node.SetSources(sources.ToArray());
if (dest != default)
{
if (dest.Type == OperandType.V128)
{
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
Operation operation = node;
node = nodes.AddAfter(node, Operation(Instruction.VectorCreateScalar, dest, retLReg));
nodes.AddAfter(node, Operation(Instruction.VectorInsert, dest, dest, retHReg, Const(1)));
operation.Destination = default;
}
else
{
Operand retReg = dest.Type.IsInteger()
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
Operation copyOp = Operation(Instruction.Copy, dest, retReg);
nodes.AddAfter(node, copyOp);
node.Destination = retReg;
}
}
}
private static void HandleTailcallSystemVAbi(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
List<Operand> sources = new List<Operand>
{
node.GetSource(0)
};
int argsCount = node.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 = node.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, Operation(Instruction.VectorExtract, argReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, node.GetSource(0));
nodes.AddBefore(node, addrCopyOp);
sources[0] = retReg;
node.SetSources(sources.ToArray());
}
private static void HandleTailcallWindowsAbi(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
int argsCount = node.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 = node.GetSource(1 + index);
Operand argReg = source.Type.IsInteger()
? Gpr(CallingConvention.GetIntArgumentRegister(index), source.Type)
: Xmm(CallingConvention.GetVecArgumentRegister(index), source.Type);
Operation copyOp = Operation(Instruction.Copy, argReg, source);
HandleConstantRegCopy(nodes, nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, node.GetSource(0));
nodes.AddBefore(node, addrCopyOp);
sources[0] = retReg;
node.SetSources(sources);
}
private static Operation HandleLoadArgumentWindowsAbi(
CompilerContext cctx,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
Operand source = node.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 = node.Destination;
if (preservedArgs[index] == default)
{
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 = Operation(Instruction.Copy, pArg, argReg);
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
preservedArgs[index] = pArg;
}
Operation argCopyOp = Operation(dest.Type == OperandType.V128
? Instruction.Load
: Instruction.Copy, dest, preservedArgs[index]);
Operation newNode = nodes.AddBefore(node, argCopyOp);
Delete(nodes, node);
return newNode;
}
else
{
// TODO: Pass on stack.
return node;
}
}
private static Operation HandleLoadArgumentSystemVAbi(
CompilerContext cctx,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
Operand source = node.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 = node.Destination;
if (preservedArgs[index] == default)
{
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 = Operation(Instruction.VectorCreateScalar, pArg, argLReg);
Operation copyH = 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 = Operation(Instruction.Copy, pArg, argReg);
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
preservedArgs[index] = pArg;
}
}
Operation argCopyOp = Operation(Instruction.Copy, dest, preservedArgs[index]);
Operation newNode = nodes.AddBefore(node, argCopyOp);
Delete(nodes, node);
return newNode;
}
else
{
// TODO: Pass on stack.
return node;
}
}
private static void HandleReturnWindowsAbi(
CompilerContext cctx,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
if (node.SourcesCount == 0)
{
return;
}
Operand source = node.GetSource(0);
Operand retReg;
if (source.Type.IsInteger())
{
retReg = Gpr(CallingConvention.GetIntReturnRegister(), source.Type);
}
else if (source.Type == OperandType.V128)
{
if (preservedArgs[0] == default)
{
Operand preservedArg = Local(OperandType.I64);
Operand arg0 = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
Operation copyOp = 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 = Operation(Instruction.Store, default, retReg, source);
nodes.AddBefore(node, retStoreOp);
}
else
{
Operation retCopyOp = Operation(Instruction.Copy, retReg, source);
nodes.AddBefore(node, retCopyOp);
}
node.SetSources(Array.Empty<Operand>());
}
private static void HandleReturnSystemVAbi(IntrusiveList<Operation> nodes, Operation node)
{
if (node.SourcesCount == 0)
{
return;
}
Operand source = node.GetSource(0);
if (source.Type == OperandType.V128)
{
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
nodes.AddBefore(node, Operation(Instruction.VectorExtract, retLReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, source);
nodes.AddBefore(node, retCopyOp);
}
}
private static Operand AddXmmCopy(IntrusiveList<Operation> nodes, Operation node, Operand source)
protected static Operand AddXmmCopy(IntrusiveList<Operation> nodes, Operation node, Operand source)
{
Operand temp = Local(source.Type);
Operand intConst = AddCopy(nodes, node, GetIntConst(source));
@ -1204,7 +592,7 @@ namespace ARMeilleure.CodeGen.X86
return temp;
}
private static Operand AddCopy(IntrusiveList<Operation> nodes, Operation node, Operand source)
protected static Operand AddCopy(IntrusiveList<Operation> nodes, Operation node, Operand source)
{
Operand temp = Local(source.Type);
@ -1229,7 +617,7 @@ namespace ARMeilleure.CodeGen.X86
return value;
}
private static void Delete(IntrusiveList<Operation> nodes, Operation node)
protected static void Delete(IntrusiveList<Operation> nodes, Operation node)
{
node.Destination = default;
@ -1241,12 +629,12 @@ namespace ARMeilleure.CodeGen.X86
nodes.Remove(node);
}
private static Operand Gpr(X86Register register, OperandType type)
protected static Operand Gpr(X86Register register, OperandType type)
{
return Register((int)register, RegisterType.Integer, type);
}
private static Operand Xmm(X86Register register, OperandType type)
protected static Operand Xmm(X86Register register, OperandType type)
{
return Register((int)register, RegisterType.Vector, type);
}

334
ARMeilleure/CodeGen/X86/PreAllocatorSystemV.cs Normal file
View file

@ -0,0 +1,334 @@
using ARMeilleure.CodeGen.RegisterAllocators;
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
namespace ARMeilleure.CodeGen.X86
{
class PreAllocatorSystemV : PreAllocator
{
public static void InsertCallCopies(IntrusiveList<Operation> nodes, Operation node)
{
Operand dest = node.Destination;
List<Operand> sources = new List<Operand>
{
node.GetSource(0)
};
int argsCount = node.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 = node.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, Operation(Instruction.VectorExtract, argReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, argReg, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, copyOp));
sources.Add(argReg);
}
else
{
Operand offset = Const(stackOffset);
Operation spillOp = Operation(Instruction.SpillArg, default, offset, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, spillOp));
stackOffset += source.Type.GetSizeInBytes();
}
}
node.SetSources(sources.ToArray());
if (dest != default)
{
if (dest.Type == OperandType.V128)
{
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
Operation operation = node;
node = nodes.AddAfter(node, Operation(Instruction.VectorCreateScalar, dest, retLReg));
nodes.AddAfter(node, Operation(Instruction.VectorInsert, dest, dest, retHReg, Const(1)));
operation.Destination = default;
}
else
{
Operand retReg = dest.Type.IsInteger()
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
Operation copyOp = Operation(Instruction.Copy, dest, retReg);
nodes.AddAfter(node, copyOp);
node.Destination = retReg;
}
}
}
public static void InsertTailcallCopies(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
List<Operand> sources = new List<Operand>
{
node.GetSource(0)
};
int argsCount = node.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 = node.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, Operation(Instruction.VectorExtract, argReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, argReg, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, node.GetSource(0));
nodes.AddBefore(node, addrCopyOp);
sources[0] = retReg;
node.SetSources(sources.ToArray());
}
public static Operation InsertLoadArgumentCopy(
CompilerContext cctx,
ref Span<Operation> buffer,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
Operand source = node.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 = node.Destination;
if (preservedArgs[index] == default)
{
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 = Operation(Instruction.VectorCreateScalar, pArg, argLReg);
Operation copyH = 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 = Operation(Instruction.Copy, pArg, argReg);
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
preservedArgs[index] = pArg;
}
}
Operation nextNode;
if (dest.AssignmentsCount == 1)
{
// Let's propagate the argument if we can to avoid copies.
PreAllocatorCommon.Propagate(ref buffer, dest, preservedArgs[index]);
nextNode = node.ListNext;
}
else
{
Operation argCopyOp = Operation(Instruction.Copy, dest, preservedArgs[index]);
nextNode = nodes.AddBefore(node, argCopyOp);
}
Delete(nodes, node);
return nextNode;
}
else
{
// TODO: Pass on stack.
return node;
}
}
public static void InsertReturnCopy(IntrusiveList<Operation> nodes, Operation node)
{
if (node.SourcesCount == 0)
{
return;
}
Operand source = node.GetSource(0);
if (source.Type == OperandType.V128)
{
Operand retLReg = Gpr(CallingConvention.GetIntReturnRegister(), OperandType.I64);
Operand retHReg = Gpr(CallingConvention.GetIntReturnRegisterHigh(), OperandType.I64);
nodes.AddBefore(node, Operation(Instruction.VectorExtract, retLReg, source, Const(0)));
nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, source);
nodes.AddBefore(node, retCopyOp);
}
}
}
}

327
ARMeilleure/CodeGen/X86/PreAllocatorWindows.cs Normal file
View file

@ -0,0 +1,327 @@
using ARMeilleure.CodeGen.RegisterAllocators;
using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation;
using System;
using System.Diagnostics;
using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
using static ARMeilleure.IntermediateRepresentation.Operation.Factory;
namespace ARMeilleure.CodeGen.X86
{
class PreAllocatorWindows : PreAllocator
{
public static void InsertCallCopies(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
Operand dest = node.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 = default;
if (dest != default && dest.Type == OperandType.V128)
{
int stackOffset = AllocateOnStack(dest.Type.GetSizeInBytes());
arg0Reg = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
Operation allocOp = Operation(Instruction.StackAlloc, arg0Reg, Const(stackOffset));
nodes.AddBefore(node, allocOp);
retArgs = 1;
}
int argsCount = node.SourcesCount - 1;
int maxArgs = CallingConvention.GetArgumentsOnRegsCount() - retArgs;
if (argsCount > maxArgs)
{
argsCount = maxArgs;
}
Operand[] sources = new Operand[1 + retArgs + argsCount];
sources[0] = node.GetSource(0);
if (arg0Reg != default)
{
sources[1] = arg0Reg;
}
for (int index = 1; index < node.SourcesCount; index++)
{
Operand source = node.GetSource(index);
if (source.Type == OperandType.V128)
{
Operand stackAddr = Local(OperandType.I64);
int stackOffset = AllocateOnStack(source.Type.GetSizeInBytes());
nodes.AddBefore(node, Operation(Instruction.StackAlloc, stackAddr, Const(stackOffset)));
Operation storeOp = Operation(Instruction.Store, default, stackAddr, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, storeOp));
node.SetSource(index, stackAddr);
}
}
// Handle arguments passed on registers.
for (int index = 0; index < argsCount; index++)
{
Operand source = node.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 = Operation(Instruction.Copy, argReg, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, 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 < node.SourcesCount - 1; index++)
{
Operand source = node.GetSource(index + 1);
Operand offset = Const((index + retArgs) * 8);
Operation spillOp = Operation(Instruction.SpillArg, default, offset, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, spillOp));
}
if (dest != default)
{
if (dest.Type == OperandType.V128)
{
Operand retValueAddr = Local(OperandType.I64);
nodes.AddBefore(node, Operation(Instruction.Copy, retValueAddr, arg0Reg));
Operation loadOp = Operation(Instruction.Load, dest, retValueAddr);
nodes.AddAfter(node, loadOp);
node.Destination = default;
}
else
{
Operand retReg = dest.Type.IsInteger()
? Gpr(CallingConvention.GetIntReturnRegister(), dest.Type)
: Xmm(CallingConvention.GetVecReturnRegister(), dest.Type);
Operation copyOp = Operation(Instruction.Copy, dest, retReg);
nodes.AddAfter(node, copyOp);
node.Destination = retReg;
}
}
node.SetSources(sources);
}
public static void InsertTailcallCopies(IntrusiveList<Operation> nodes, StackAllocator stackAlloc, Operation node)
{
int argsCount = node.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 = node.GetSource(1 + index);
Operand argReg = source.Type.IsInteger()
? Gpr(CallingConvention.GetIntArgumentRegister(index), source.Type)
: Xmm(CallingConvention.GetVecArgumentRegister(index), source.Type);
Operation copyOp = Operation(Instruction.Copy, argReg, source);
InsertConstantRegCopies(nodes, nodes.AddBefore(node, 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 = Operation(Instruction.Copy, retReg, node.GetSource(0));
nodes.AddBefore(node, addrCopyOp);
sources[0] = retReg;
node.SetSources(sources);
}
public static Operation InsertLoadArgumentCopy(
CompilerContext cctx,
ref Span<Operation> buffer,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
Operand source = node.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 = node.Destination;
if (preservedArgs[index] == default)
{
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 = Operation(Instruction.Copy, pArg, argReg);
cctx.Cfg.Entry.Operations.AddFirst(copyOp);
preservedArgs[index] = pArg;
}
Operation nextNode;
if (dest.Type != OperandType.V128 && dest.AssignmentsCount == 1)
{
// Let's propagate the argument if we can to avoid copies.
PreAllocatorCommon.Propagate(ref buffer, dest, preservedArgs[index]);
nextNode = node.ListNext;
}
else
{
Operation argCopyOp = Operation(dest.Type == OperandType.V128
? Instruction.Load
: Instruction.Copy, dest, preservedArgs[index]);
nextNode = nodes.AddBefore(node, argCopyOp);
}
Delete(nodes, node);
return nextNode;
}
else
{
// TODO: Pass on stack.
return node;
}
}
public static void InsertReturnCopy(
CompilerContext cctx,
IntrusiveList<Operation> nodes,
Operand[] preservedArgs,
Operation node)
{
if (node.SourcesCount == 0)
{
return;
}
Operand source = node.GetSource(0);
Operand retReg;
if (source.Type.IsInteger())
{
retReg = Gpr(CallingConvention.GetIntReturnRegister(), source.Type);
}
else if (source.Type == OperandType.V128)
{
if (preservedArgs[0] == default)
{
Operand preservedArg = Local(OperandType.I64);
Operand arg0 = Gpr(CallingConvention.GetIntArgumentRegister(0), OperandType.I64);
Operation copyOp = 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 = Operation(Instruction.Store, default, retReg, source);
nodes.AddBefore(node, retStoreOp);
}
else
{
Operation retCopyOp = Operation(Instruction.Copy, retReg, source);
nodes.AddBefore(node, retCopyOp);
}
node.SetSources(Array.Empty<Operand>());
}
}
}

2
ARMeilleure/Translation/PTC/Ptc.cs
View file

@ -29,7 +29,7 @@ namespace ARMeilleure.Translation.PTC
private const string OuterHeaderMagicString = "PTCohd\0\0";
private const string InnerHeaderMagicString = "PTCihd\0\0";
private const uint InternalVersion = 4328; //! To be incremented manually for each change to the ARMeilleure project.
private const uint InternalVersion = 4484; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0";
private const string BackupDir = "1";