[llvm] [InstCombine] Improve range computation in `foldICmpAddConstant` (PR #155096)

[Andreas Jonson via llvm-commits]

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@@ -3289,9 +3285,7 @@ entry:
 define i1 @zext_range_check_ult_range_check_failure(i8 %x) {
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andjo403 wrote:

Change name of test? check_failure is a bit strange now

https://github.com/llvm/llvm-project/pull/155096