Implement constant-folding for VNF_BitCast#68979
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jakobbotsch merged 3 commits intodotnet:mainfrom May 15, 2022
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Tagging subscribers to this area: @JulieLeeMSFT Issue DetailsCompletes the support for said function. A small number of diffs in tests where we form new constants from
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Windows ARM64 failures with empty logs look like infrastructure issues. @dotnet/jit-contrib |
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Still needs some work. |
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Should be complete at this point. |
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A few small diffs in tests where we now form new constants for "long/int <-> double/float>" reinterpretations. Completes the support for "VNF_BitCast" and removes the SIMD quirk from "VNForLoadStoreBitCast".
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May 14, 2022
Only usage of "active" union members is well-defined in C++.
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Completes the support for said function.
A small number of diffs:
FP <-> integerreinterpretations.BitCastlogic can skip redundant casts for small types in some cases. This new precision is not all that useful however because the new CSE defs throw exceptions different from their uses (typical case:Def: field = array[0]; Use: read field; Use: read field).