Marc Auberer 09cdddea0c [InstCombine] Fold x + (x | -x) to x & (x - 1) ...

Fixes #57531

This transformation may be particularly useful on x86-64,
because x & (x - 1) can be performed by a single blsr instruction.

Differential Revision: https://reviews.llvm.org/D133362

2022-09-11 06:14:24 -04:00

89 KiB

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