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Fold constant offsets and group constant addresses (#2285)

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* Fold constant offsets and group constant addresses

* PPTC version bump
This commit is contained in:
gdkchan 2021-05-13 16:26:57 -03:00 committed by GitHub
parent 57ea3f93a3
commit e318022b89
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 42 additions and 21 deletions
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42
ARMeilleure/CodeGen/X86/X86Optimizer.cs
View file

@ -1,6 +1,7 @@
using ARMeilleure.CodeGen.Optimizations; using ARMeilleure.CodeGen.Optimizations;
using ARMeilleure.IntermediateRepresentation; using ARMeilleure.IntermediateRepresentation;
using ARMeilleure.Translation; using ARMeilleure.Translation;
using System.Collections.Generic;
using static ARMeilleure.IntermediateRepresentation.OperandHelper; using static ARMeilleure.IntermediateRepresentation.OperandHelper;
using static ARMeilleure.IntermediateRepresentation.OperationHelper; using static ARMeilleure.IntermediateRepresentation.OperationHelper;
@ -11,8 +12,28 @@ namespace ARMeilleure.CodeGen.X86
{ {
public static void RunPass(ControlFlowGraph cfg) public static void RunPass(ControlFlowGraph cfg)
{ {
var constants = new Dictionary<ulong, Operand>();
Operand GetConstantCopy(BasicBlock block, Operation operation, Operand source)
{
if (!constants.TryGetValue(source.Value, out var constant))
{
constant = Local(source.Type);
Operation copyOp = Operation(Instruction.Copy, constant, source);
block.Operations.AddBefore(operation, copyOp);
constants.Add(source.Value, constant);
}
return constant;
}
for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext) for (BasicBlock block = cfg.Blocks.First; block != null; block = block.ListNext)
{ {
constants.Clear();
Node nextNode; Node nextNode;
for (Node node = block.Operations.First; node != null; node = nextNode) for (Node node = block.Operations.First; node != null; node = nextNode)
@ -33,24 +54,12 @@ namespace ARMeilleure.CodeGen.X86
if (src1.Kind == OperandKind.Constant && (src1.Relocatable || CodeGenCommon.IsLongConst(src1))) if (src1.Kind == OperandKind.Constant && (src1.Relocatable || CodeGenCommon.IsLongConst(src1)))
{ {
Operand temp = Local(src1.Type); operation.SetSource(0, GetConstantCopy(block, operation, src1));
Operation copyOp = Operation(Instruction.Copy, temp, src1);
block.Operations.AddBefore(operation, copyOp);
operation.SetSource(0, temp);
} }
if (src2.Kind == OperandKind.Constant && (src2.Relocatable || CodeGenCommon.IsLongConst(src2))) if (src2.Kind == OperandKind.Constant && (src2.Relocatable || CodeGenCommon.IsLongConst(src2)))
{ {
Operand temp = Local(src2.Type); operation.SetSource(1, GetConstantCopy(block, operation, src2));
Operation copyOp = Operation(Instruction.Copy, temp, src2);
block.Operations.AddBefore(operation, copyOp);
operation.SetSource(1, temp);
} }
} }
@ -111,6 +120,11 @@ namespace ARMeilleure.CodeGen.X86
return null; return null;
} }
if (imm == 0 && scale == Multiplier.x1 && indexOp != null)
{
imm = GetConstOp(ref indexOp);
}
return MemoryOp(type, baseOp, indexOp, scale, imm); return MemoryOp(type, baseOp, indexOp, scale, imm);
} }

19
ARMeilleure/Instructions/InstEmitMemory.cs
View file

@ -87,8 +87,7 @@ namespace ARMeilleure.Instructions
} }
Operand address = GetAddress(context); Operand address = GetAddress(context);
Operand address2 = GetAddress(context, 1L << op.Size);
Operand address2 = context.Add(address, Const(1L << op.Size));
EmitLoad(op.Rt, address); EmitLoad(op.Rt, address);
EmitLoad(op.Rt2, address2); EmitLoad(op.Rt2, address2);
@ -112,8 +111,7 @@ namespace ARMeilleure.Instructions
OpCodeMemPair op = (OpCodeMemPair)context.CurrOp; OpCodeMemPair op = (OpCodeMemPair)context.CurrOp;
Operand address = GetAddress(context); Operand address = GetAddress(context);
Operand address2 = GetAddress(context, 1L << op.Size);
Operand address2 = context.Add(address, Const(1L << op.Size));
InstEmitMemoryHelper.EmitStore(context, address, op.Rt, op.Size); InstEmitMemoryHelper.EmitStore(context, address, op.Rt, op.Size);
InstEmitMemoryHelper.EmitStore(context, address2, op.Rt2, op.Size); InstEmitMemoryHelper.EmitStore(context, address2, op.Rt2, op.Size);
@ -121,7 +119,7 @@ namespace ARMeilleure.Instructions
EmitWBackIfNeeded(context, address); EmitWBackIfNeeded(context, address);
} }
private static Operand GetAddress(ArmEmitterContext context) private static Operand GetAddress(ArmEmitterContext context, long addend = 0)
{ {
Operand address = null; Operand address = null;
@ -134,7 +132,11 @@ namespace ARMeilleure.Instructions
// Pre-indexing. // Pre-indexing.
if (!op.PostIdx) if (!op.PostIdx)
{ {
address = context.Add(address, Const(op.Immediate)); address = context.Add(address, Const(op.Immediate + addend));
}
else if (addend != 0)
{
address = context.Add(address, Const(addend));
} }
break; break;
@ -153,6 +155,11 @@ namespace ARMeilleure.Instructions
address = context.Add(n, m); address = context.Add(n, m);
if (addend != 0)
{
address = context.Add(address, Const(addend));
}
break; break;
} }
} }

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

@ -28,7 +28,7 @@ namespace ARMeilleure.Translation.PTC
private const string OuterHeaderMagicString = "PTCohd\0\0"; private const string OuterHeaderMagicString = "PTCohd\0\0";
private const string InnerHeaderMagicString = "PTCihd\0\0"; private const string InnerHeaderMagicString = "PTCihd\0\0";
private const uint InternalVersion = 1866; //! To be incremented manually for each change to the ARMeilleure project. private const uint InternalVersion = 2285; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0"; private const string ActualDir = "0";
private const string BackupDir = "1"; private const string BackupDir = "1";