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Faster crc32 implementation (#1294)

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* Add Pclmulqdq intrinsic

* Implement crc32 in terms of pclmulqdq

* Address PR comments
This commit is contained in:
merry 2020-06-05 11:58:27 +01:00 • committed by GitHub
parent bcb7761eac
commit f8cd072b62
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6 changed files with 160 additions and 26 deletions
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8
ARMeilleure/CodeGen/X86/Assembler.cs
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@ -165,6 +165,7 @@ namespace ARMeilleure.CodeGen.X86
Add(X86Instruction.Pavgb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe0, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pavgw, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000fe3, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pblendvb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3810, InstructionFlags.Prefix66));
Add(X86Instruction.Pclmulqdq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3a44, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqb, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f74, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqd, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x00000f76, InstructionFlags.Vex | InstructionFlags.Prefix66));
Add(X86Instruction.Pcmpeqq, new InstructionInfo(BadOp, BadOp, BadOp, BadOp, 0x000f3829, InstructionFlags.Vex | InstructionFlags.Prefix66));
@ -633,6 +634,13 @@ namespace ARMeilleure.CodeGen.X86
WriteInstruction(dest, source, type, X86Instruction.Or);
}
public void Pclmulqdq(Operand dest, Operand source, byte imm)
{
WriteInstruction(dest, null, source, X86Instruction.Pclmulqdq);
WriteByte(imm);
}
public void Pcmpeqw(Operand dest, Operand src1, Operand src2)
{
WriteInstruction(dest, src1, src2, X86Instruction.Pcmpeqw);