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InstCombine currently recognises ((x1 ^ y1) | (x2 ^ y2)) == 0 as an idiom for x1 == y1 && x2 == y2, but this idiom detection does not work when more than 2 pairs of variables are being compared:
InstCombine currently recognises
((x1 ^ y1) | (x2 ^ y2)) == 0
as an idiom forx1 == y1 && x2 == y2
, but this idiom detection does not work when more than 2 pairs of variables are being compared:This function
is simplified to
But these two functions are not:
godbolt
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