5e0f8e8738
* Implement JIT Arm64 backend * PPTC version bump * Address some feedback from Arm64 JIT PR * Address even more PR feedback * Remove unused IsPageAligned function * Sync Qc flag before calls * Fix comment and remove unused enum * Address riperiperi PR feedback * Delete Breakpoint IR instruction that was only implemented for Arm64
346 lines
No EOL
13 KiB
C#
346 lines
No EOL
13 KiB
C#
using ARMeilleure.IntermediateRepresentation;
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using System;
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using static ARMeilleure.IntermediateRepresentation.Operand.Factory;
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namespace ARMeilleure.CodeGen.Optimizations
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{
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static class ConstantFolding
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{
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public static void RunPass(Operation operation)
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{
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if (operation.Destination == default || operation.SourcesCount == 0)
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{
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return;
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}
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if (!AreAllSourcesConstant(operation))
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{
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return;
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}
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OperandType type = operation.Destination.Type;
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switch (operation.Instruction)
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{
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case Instruction.Add:
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if (operation.GetSource(0).Relocatable ||
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operation.GetSource(1).Relocatable)
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{
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break;
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}
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x + y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x + y);
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}
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break;
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case Instruction.BitwiseAnd:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x & y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x & y);
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}
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break;
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case Instruction.BitwiseExclusiveOr:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x ^ y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x ^ y);
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}
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break;
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case Instruction.BitwiseNot:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => ~x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => ~x);
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}
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break;
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case Instruction.BitwiseOr:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x | y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x | y);
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}
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break;
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case Instruction.ConvertI64ToI32:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => x);
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}
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break;
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case Instruction.Compare:
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if (type == OperandType.I32 &&
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operation.GetSource(0).Type == type &&
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operation.GetSource(1).Type == type)
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{
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switch ((Comparison)operation.GetSource(2).Value)
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{
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case Comparison.Equal:
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EvaluateBinaryI32(operation, (x, y) => x == y ? 1 : 0);
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break;
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case Comparison.NotEqual:
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EvaluateBinaryI32(operation, (x, y) => x != y ? 1 : 0);
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break;
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case Comparison.Greater:
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EvaluateBinaryI32(operation, (x, y) => x > y ? 1 : 0);
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break;
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case Comparison.LessOrEqual:
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EvaluateBinaryI32(operation, (x, y) => x <= y ? 1 : 0);
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break;
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case Comparison.GreaterUI:
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EvaluateBinaryI32(operation, (x, y) => (uint)x > (uint)y ? 1 : 0);
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break;
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case Comparison.LessOrEqualUI:
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EvaluateBinaryI32(operation, (x, y) => (uint)x <= (uint)y ? 1 : 0);
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break;
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case Comparison.GreaterOrEqual:
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EvaluateBinaryI32(operation, (x, y) => x >= y ? 1 : 0);
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break;
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case Comparison.Less:
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EvaluateBinaryI32(operation, (x, y) => x < y ? 1 : 0);
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break;
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case Comparison.GreaterOrEqualUI:
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EvaluateBinaryI32(operation, (x, y) => (uint)x >= (uint)y ? 1 : 0);
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break;
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case Comparison.LessUI:
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EvaluateBinaryI32(operation, (x, y) => (uint)x < (uint)y ? 1 : 0);
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break;
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}
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}
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break;
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case Instruction.Copy:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => x);
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}
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break;
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case Instruction.Divide:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => y != 0 ? x / y : 0);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => y != 0 ? x / y : 0);
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}
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break;
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case Instruction.DivideUI:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => y != 0 ? (int)((uint)x / (uint)y) : 0);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => y != 0 ? (long)((ulong)x / (ulong)y) : 0);
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}
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break;
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case Instruction.Multiply:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x * y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x * y);
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}
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break;
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case Instruction.Negate:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => -x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => -x);
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}
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break;
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case Instruction.ShiftLeft:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x << y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x << (int)y);
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}
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break;
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case Instruction.ShiftRightSI:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x >> y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x >> (int)y);
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}
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break;
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case Instruction.ShiftRightUI:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => (int)((uint)x >> y));
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => (long)((ulong)x >> (int)y));
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}
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break;
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case Instruction.SignExtend16:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => (short)x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (short)x);
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}
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break;
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case Instruction.SignExtend32:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (int)x);
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}
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break;
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case Instruction.SignExtend8:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => (sbyte)x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (sbyte)x);
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}
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break;
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case Instruction.ZeroExtend16:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => (ushort)x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (ushort)x);
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}
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break;
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case Instruction.ZeroExtend32:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (uint)x);
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}
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break;
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case Instruction.ZeroExtend8:
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if (type == OperandType.I32)
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{
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EvaluateUnaryI32(operation, (x) => (byte)x);
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}
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else if (type == OperandType.I64)
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{
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EvaluateUnaryI64(operation, (x) => (byte)x);
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}
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break;
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case Instruction.Subtract:
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if (type == OperandType.I32)
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{
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EvaluateBinaryI32(operation, (x, y) => x - y);
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}
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else if (type == OperandType.I64)
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{
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EvaluateBinaryI64(operation, (x, y) => x - y);
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}
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break;
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}
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}
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private static bool AreAllSourcesConstant(Operation operation)
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{
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for (int index = 0; index < operation.SourcesCount; index++)
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{
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Operand srcOp = operation.GetSource(index);
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if (srcOp.Kind != OperandKind.Constant)
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{
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return false;
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}
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}
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return true;
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}
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private static void EvaluateUnaryI32(Operation operation, Func<int, int> op)
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{
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int x = operation.GetSource(0).AsInt32();
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operation.TurnIntoCopy(Const(op(x)));
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}
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private static void EvaluateUnaryI64(Operation operation, Func<long, long> op)
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{
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long x = operation.GetSource(0).AsInt64();
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operation.TurnIntoCopy(Const(op(x)));
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}
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private static void EvaluateBinaryI32(Operation operation, Func<int, int, int> op)
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{
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int x = operation.GetSource(0).AsInt32();
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int y = operation.GetSource(1).AsInt32();
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operation.TurnIntoCopy(Const(op(x, y)));
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}
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private static void EvaluateBinaryI64(Operation operation, Func<long, long, long> op)
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{
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long x = operation.GetSource(0).AsInt64();
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long y = operation.GetSource(1).AsInt64();
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operation.TurnIntoCopy(Const(op(x, y)));
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}
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}
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} |