From a731ab3a2aad56e6ceb8b4e2444a61353246295c Mon Sep 17 00:00:00 2001 From: gdkchan Date: Thu, 8 Aug 2019 15:56:22 -0300 Subject: Add a new JIT compiler for CPU code (#693) * Start of the ARMeilleure project * Refactoring around the old IRAdapter, now renamed to PreAllocator * Optimize the LowestBitSet method * Add CLZ support and fix CLS implementation * Add missing Equals and GetHashCode overrides on some structs, misc small tweaks * Implement the ByteSwap IR instruction, and some refactoring on the assembler * Implement the DivideUI IR instruction and fix 64-bits IDIV * Correct constant operand type on CSINC * Move division instructions implementation to InstEmitDiv * Fix destination type for the ConditionalSelect IR instruction * Implement UMULH and SMULH, with new IR instructions * Fix some issues with shift instructions * Fix constant types for BFM instructions * Fix up new tests using the new V128 struct * Update tests * Move DIV tests to a separate file * Add support for calls, and some instructions that depends on them * Start adding support for SIMD & FP types, along with some of the related ARM instructions * Fix some typos and the divide instruction with FP operands * Fix wrong method call on Clz_V * Implement ARM FP & SIMD move instructions, Saddlv_V, and misc. fixes * Implement SIMD logical instructions and more misc. fixes * Fix PSRAD x86 instruction encoding, TRN, UABD and UABDL implementations * Implement float conversion instruction, merge in LDj3SNuD fixes, and some other misc. fixes * Implement SIMD shift instruction and fix Dup_V * Add SCVTF and UCVTF (vector, fixed-point) variants to the opcode table * Fix check with tolerance on tester * Implement FP & SIMD comparison instructions, and some fixes * Update FCVT (Scalar) encoding on the table to support the Half-float variants * Support passing V128 structs, some cleanup on the register allocator, merge LDj3SNuD fixes * Use old memory access methods, made a start on SIMD memory insts support, some fixes * Fix float constant passed to functions, save and restore non-volatile XMM registers, other fixes * Fix arguments count with struct return values, other fixes * More instructions * Misc. fixes and integrate LDj3SNuD fixes * Update tests * Add a faster linear scan allocator, unwinding support on windows, and other changes * Update Ryujinx.HLE * Update Ryujinx.Graphics * Fix V128 return pointer passing, RCX is clobbered * Update Ryujinx.Tests * Update ITimeZoneService * Stop using GetFunctionPointer as that can't be called from native code, misc. fixes and tweaks * Use generic GetFunctionPointerForDelegate method and other tweaks * Some refactoring on the code generator, assert on invalid operations and use a separate enum for intrinsics * Remove some unused code on the assembler * Fix REX.W prefix regression on float conversion instructions, add some sort of profiler * Add hardware capability detection * Fix regression on Sha1h and revert Fcm** changes * Add SSE2-only paths on vector extract and insert, some refactoring on the pre-allocator * Fix silly mistake introduced on last commit on CpuId * Generate inline stack probes when the stack allocation is too large * Initial support for the System-V ABI * Support multiple destination operands * Fix SSE2 VectorInsert8 path, and other fixes * Change placement of XMM callee save and restore code to match other compilers * Rename Dest to Destination and Inst to Instruction * Fix a regression related to calls and the V128 type * Add an extra space on comments to match code style * Some refactoring * Fix vector insert FP32 SSE2 path * Port over the ARM32 instructions * Avoid memory protection races on JIT Cache * Another fix on VectorInsert FP32 (thanks to LDj3SNuD * Float operands don't need to use the same register when VEX is supported * Add a new register allocator, higher quality code for hot code (tier up), and other tweaks * Some nits, small improvements on the pre allocator * CpuThreadState is gone * Allow changing CPU emulators with a config entry * Add runtime identifiers on the ARMeilleure project * Allow switching between CPUs through a config entry (pt. 2) * Change win10-x64 to win-x64 on projects * Update the Ryujinx project to use ARMeilleure * Ensure that the selected register is valid on the hybrid allocator * Allow exiting on returns to 0 (should fix test regression) * Remove register assignments for most used variables on the hybrid allocator * Do not use fixed registers as spill temp * Add missing namespace and remove unneeded using * Address PR feedback * Fix types, etc * Enable AssumeStrictAbiCompliance by default * Ensure that Spill and Fill don't load or store any more than necessary --- .../CodeGen/Optimizations/ConstantFolding.cs | 258 +++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 ARMeilleure/CodeGen/Optimizations/ConstantFolding.cs (limited to 'ARMeilleure/CodeGen/Optimizations/ConstantFolding.cs') diff --git a/ARMeilleure/CodeGen/Optimizations/ConstantFolding.cs b/ARMeilleure/CodeGen/Optimizations/ConstantFolding.cs new file mode 100644 index 00000000..84eedee0 --- /dev/null +++ b/ARMeilleure/CodeGen/Optimizations/ConstantFolding.cs @@ -0,0 +1,258 @@ +using ARMeilleure.IntermediateRepresentation; +using System; + +using static ARMeilleure.IntermediateRepresentation.OperandHelper; + +namespace ARMeilleure.CodeGen.Optimizations +{ + static class ConstantFolding + { + public static void RunPass(Operation operation) + { + if (operation.Destination == null || operation.SourcesCount == 0) + { + return; + } + + if (!AreAllSourcesConstant(operation)) + { + return; + } + + OperandType type = operation.Destination.Type; + + switch (operation.Instruction) + { + case Instruction.Add: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x + y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x + y); + } + break; + + case Instruction.BitwiseAnd: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x & y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x & y); + } + break; + + case Instruction.BitwiseExclusiveOr: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x ^ y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x ^ y); + } + break; + + case Instruction.BitwiseNot: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => ~x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => ~x); + } + break; + + case Instruction.BitwiseOr: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x | y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x | y); + } + break; + + case Instruction.Copy: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => x); + } + break; + + case Instruction.Divide: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => y != 0 ? x / y : 0); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => y != 0 ? x / y : 0); + } + break; + + case Instruction.DivideUI: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => y != 0 ? (int)((uint)x / (uint)y) : 0); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => y != 0 ? (long)((ulong)x / (ulong)y) : 0); + } + break; + + case Instruction.Multiply: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x * y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x * y); + } + break; + + case Instruction.Negate: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => -x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => -x); + } + break; + + case Instruction.ShiftLeft: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x << y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x << (int)y); + } + break; + + case Instruction.ShiftRightSI: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x >> y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x >> (int)y); + } + break; + + case Instruction.ShiftRightUI: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => (int)((uint)x >> y)); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => (long)((ulong)x >> (int)y)); + } + break; + + case Instruction.SignExtend16: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => (short)x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => (short)x); + } + break; + + case Instruction.SignExtend32: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => (int)x); + } + break; + + case Instruction.SignExtend8: + if (type == OperandType.I32) + { + EvaluateUnaryI32(operation, (x) => (sbyte)x); + } + else if (type == OperandType.I64) + { + EvaluateUnaryI64(operation, (x) => (sbyte)x); + } + break; + + case Instruction.Subtract: + if (type == OperandType.I32) + { + EvaluateBinaryI32(operation, (x, y) => x - y); + } + else if (type == OperandType.I64) + { + EvaluateBinaryI64(operation, (x, y) => x - y); + } + break; + } + } + + private static bool AreAllSourcesConstant(Operation operation) + { + for (int index = 0; index < operation.SourcesCount; index++) + { + if (operation.GetSource(index).Kind != OperandKind.Constant) + { + return false; + } + } + + return true; + } + + private static void EvaluateUnaryI32(Operation operation, Func op) + { + int x = operation.GetSource(0).AsInt32(); + + operation.TurnIntoCopy(Const(op(x))); + } + + private static void EvaluateUnaryI64(Operation operation, Func op) + { + long x = operation.GetSource(0).AsInt64(); + + operation.TurnIntoCopy(Const(op(x))); + } + + private static void EvaluateBinaryI32(Operation operation, Func op) + { + int x = operation.GetSource(0).AsInt32(); + int y = operation.GetSource(1).AsInt32(); + + operation.TurnIntoCopy(Const(op(x, y))); + } + + private static void EvaluateBinaryI64(Operation operation, Func op) + { + long x = operation.GetSource(0).AsInt64(); + long y = operation.GetSource(1).AsInt64(); + + operation.TurnIntoCopy(Const(op(x, y))); + } + } +} \ No newline at end of file -- cgit v1.2.3