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ir: Add opcodes for performing vector unsigned absolute differences

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This commit is contained in:
Lioncash
2018-04-01 14:21:14 -04:00
committed by MerryMage
parent 7780af56e3
commit ad5cf584ce
4 changed files with 439 additions and 368 deletions
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55
src/backend_x64/emit_x64_vector.cpp
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@@ -1285,6 +1285,61 @@ void EmitX64::EmitVectorSub64(EmitContext& ctx, IR::Inst* inst) {
EmitVectorOperation(code, ctx, inst, &Xbyak::CodeGenerator::psubq);
}
static void EmitVectorUnsignedAbsoluteDifference(size_t esize, EmitContext& ctx, IR::Inst* inst, BlockOfCode& code) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm temp = ctx.reg_alloc.ScratchXmm();
const Xbyak::Xmm x = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm y = ctx.reg_alloc.UseScratchXmm(args[1]);
switch (esize) {
case 8:
code.movdqa(temp, x);
code.psubusb(temp, y);
code.psubusb(y, x);
code.por(temp, y);
break;
case 16:
code.movdqa(temp, x);
code.psubusw(temp, y);
code.psubusw(y, x);
code.por(temp, y);
break;
case 32:
if (code.DoesCpuSupport(Xbyak::util::Cpu::tSSE41)) {
code.movdqa(temp, x);
code.pminud(x, y);
code.pmaxud(temp, y);
code.psubd(temp, x);
} else {
code.movdqa(temp, code.MConst(xword, 0x8000000080000000, 0x8000000080000000));
code.pxor(x, temp);
code.pxor(y, temp);
code.movdqa(temp, x);
code.psubd(temp, y);
code.pcmpgtd(y, x);
code.psrld(y, 1);
code.pxor(temp, y);
code.psubd(temp, y);
}
break;
}
ctx.reg_alloc.DefineValue(inst, temp);
}
void EmitX64::EmitVectorUnsignedAbsoluteDifference8(EmitContext& ctx, IR::Inst* inst) {
EmitVectorUnsignedAbsoluteDifference(8, ctx, inst, code);
}
void EmitX64::EmitVectorUnsignedAbsoluteDifference16(EmitContext& ctx, IR::Inst* inst) {
EmitVectorUnsignedAbsoluteDifference(16, ctx, inst, code);
}
void EmitX64::EmitVectorUnsignedAbsoluteDifference32(EmitContext& ctx, IR::Inst* inst) {
EmitVectorUnsignedAbsoluteDifference(32, ctx, inst, code);
}
void EmitX64::EmitVectorZeroExtend8(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm a = ctx.reg_alloc.UseScratchXmm(args[0]);