Yingwei Zheng a1a590ef12 [InstCombine] Fix miscompilation in PR83947 (#83993) ...

762f762504/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp (L394-L407)

Comment from @topperc:
> This transforms assumes the mask is a non-zero splat. We only know its
a splat and not provably all 0s. The mask is a constexpr that includes
the address of the global variable. We can't resolve the constant
expression to an exact value.

Fixes #83947.

2024-03-05 22:34:04 +08:00

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