Ensure that AdvSimd.Insert doesn't zero out the upper bits#106981
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tannergooding merged 1 commit intodotnet:mainfrom Aug 28, 2024
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Ensure that AdvSimd.Insert doesn't zero out the upper bits#106981tannergooding merged 1 commit intodotnet:mainfrom
tannergooding merged 1 commit intodotnet:mainfrom
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| assert(intrin.op2->isContainedIntOrIImmed()); | ||
| assert(intrin.op2->AsIntCon()->gtIconVal == 0); | ||
| // fmov (scalar) zeros the upper bits and is not safe to use | ||
| assert(!intrin.op3->isContainedFltOrDblImmed()); |
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GitHub is displaying the diff a bit weirdly. This is just removing the if and fixing the indentation of the else block now that its the only code path.
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CC. @dotnet/jit-contrib for review, this resolves #106079 and needs backport to .NET 9. It should also be considered for backport to .NET 8 |
jakobbotsch
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/backport to release/9.0 |
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Started backporting to release/9.0: https://github.com/dotnet/runtime/actions/runs/10599434161 |
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/backport to release/8.0-staging |
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Started backporting to release/8.0-staging: https://github.com/dotnet/runtime/actions/runs/10599481780 |
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This resolves #106079
This bug was introduced in the first Arm64 support was added back in .NET 5: #35030