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Use AVX512 intrinsics for numeric conversion in JIT #93896

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Use AVX512 intrinsics for numeric conversion in JIT #93896

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24 changes: 24 additions & 0 deletions src/coreclr/jit/hwintrinsicxarch.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1405,6 +1405,30 @@ GenTree* Compiler::impSpecialIntrinsic(NamedIntrinsic intrinsic,

case NI_Vector128_ConvertToDouble:
case NI_Vector256_ConvertToDouble:
{
assert(sig->numArgs == 1);
assert(varTypeIsLong(simdBaseType));

if (!compOpportunisticallyDependsOn(InstructionSet_AVX512DQ_VL))
{
break;
}

switch (simdSize)
{
case 16:
intrinsic = NI_AVX512DQ_VL_ConvertToVector128Double;
break;
case 32:
intrinsic = NI_AVX512DQ_VL_ConvertToVector256Double;
break;
default:
unreached();
}
op1 = impSIMDPopStack();
retNode = gtNewSimdHWIntrinsicNode(retType, op1, intrinsic, simdBaseJitType, simdSize);
break;
}
case NI_Vector128_ConvertToInt64:
case NI_Vector256_ConvertToInt64:
case NI_Vector128_ConvertToUInt32:
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