| Issue |
93769
|
| Summary |
foldFNegIntoConstant incorrectly preserves fast math flags for 0 constants
|
| Labels |
llvm:instcombine,
floating-point
|
| Assignees |
|
| Reporter |
arsenm
|
https://alive2.llvm.org/ce/z/MHShQY longer version
_Originally posted by @arsenm in https://github.com/llvm/llvm-project/pull/92512#discussion_r1619895371_
Some of the combines in foldFNegIntoConstant are unsafely taking the flags directly from the original fneg instruction, when the preservation logic requires dropping ninf in some cases.
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