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JIT: Fix EvalHWIntrinsicFunBinary for ARM MultiplyByScalar #94413

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Merged
jakobbotsch merged 6 commits into from
Nov 7, 2023
Merged

JIT: Fix EvalHWIntrinsicFunBinary for ARM MultiplyByScalar #94413

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63fdc8c
JIT: Fix EvalHWIntrinsicFunBinary for ARM MultiplyByScalar
jakobbotsch Nov 6, 2023
2170ec2
Add RequiresProcessIsolation
jakobbotsch Nov 6, 2023
134204d
Further fix, remove stress variables
jakobbotsch Nov 6, 2023
2483e6e
Fix preprocessor mishap
jakobbotsch Nov 6, 2023
74b2688
Make use of IR invariants around MultiplyByScalar
jakobbotsch Nov 6, 2023
2d2d2a9
Handle more cases
jakobbotsch Nov 6, 2023
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Handle more cases
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@jakobbotsch
jakobbotsch committed Nov 6, 2023
commit 2d2d2a994abaf274c636c00dcbac69b8bf58df9b
9 changes: 6 additions & 3 deletions src/coreclr/jit/valuenum.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7810,10 +7810,13 @@ ValueNum ValueNumStore::EvalHWIntrinsicFunBinary(var_types type,

assert((TypeOfVN(arg0VN) == type) && (TypeOfVN(arg1VN) == TYP_SIMD8));

// Handle x * 1 => x, but only if the scalar RHS is 1.
if (arg1VN == VNOneForSimdType(TYP_SIMD8, baseType))
// Handle x * 1 => x, but only if the scalar RHS is <1, ...>.
if (IsVNConstant(arg1VN))
{
return arg0VN;
if (EvaluateSimdGetElement(this, TYP_SIMD8, baseType, arg1VN, 0) == VNOneForType(baseType))
{
return arg0VN;
}
}
break;
}
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