[llvm] [ConstraintElim] Add facts about non-poison intrinsics on demand (PR #136558)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

Compile-time overhead is high: https://llvm-compile-time-tracker.com/compare.php?from=2ba455ff3dd192ff814514647d485491510a6342&to=7338200a504c6f16f4394fbcbbe632bcfcc54b6e&stat=instructions%3Au
@fhahn @nikic Do you think this patch is in the right direction? If so, I can further reduce the overhead by maintaining a global cache for visited non-poison values.


https://github.com/llvm/llvm-project/pull/136558