[PATCH] D66687: [DAGCombiner] try to form more bt/test + set out of shift+mask patterns

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added a comment.

Yeah,

int foo_b(int a) {

  return (a&1024) == 0;

}

seems to form tstbit..

but more typical case:
_Bool afoo_b(int a) {

  return (a&1024) == 0;

}

forms and and cmp.eq...

if hexagon enables hasBitTest(), it is not ideal that it cannot handle this basic case - it should be fixed.

https://godbolt.org/z/gG-6j4


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https://reviews.llvm.org/D66687