Eli Friedman 8a567e5f22 [ScalarEvolution] Fix pointer/int type handling converting select/phi to min/max. ...

The old version of this code would blindly perform arithmetic without
paying attention to whether the types involved were pointers or
integers.  This could lead to weird expressions like negating a pointer.

Explicitly handle simple cases involving pointers, like "x < y ? x : y".
In all other cases, coerce the operands of the comparison to integer
types.  This avoids the weird cases, while handling most of the
interesting cases.

Differential Revision: https://reviews.llvm.org/D103660

2021-06-17 14:05:12 -07:00

1.3 KiB

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