[llvm-bugs] [Bug 31556] New: x86 code generation inefficient for inverted conditional

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31556

            Bug ID: 31556
           Summary: x86 code generation inefficient for inverted
                    conditional
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: echristo at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Via @justinschuh:

https://godbolt.org/#z:OYLghAFBqd5QCxAYwPYBMCmBRdBLAF1QCcAaPECAKxAEZTUAHAvVAOwGdK0BbRvADaYA8mwDCCAIZtgmEAHIADPICUpDqgCuxZHPkBSAEwBmPG2QDNWANT7jYjgXxsCAOgR3s%2BxQEEjp80sbOzEBPB5CDndPbz9fAHp46wAlTAJtTmsCYk1Ma3Z8gDdMYgAzAVQAd1drADFJR3y2awtpYGtjVwBOV0VXWIAjVFQBa0l0dFoIMwJjQwB9AmsAD1JrGbnF6wBPNY2FggAqa2JMDk0BAhVbAHYAIVjrdZcANgAWLYI%2BW2MAEWtpq8PldlrZDHcATN3osVNs7A9fE9Dqdzpcfv9AbMDiovox4Y8TmkMllviFrABJAByABVNgBZKm3MT6G5iEmMH7YCk0%2Bk%2BAAa%2BN8LN%2BsViiRSROImVKkgEHDyBVQxTKFWqdQaSwKrRkHW6vX6viGIzGE1o8zMyoImHQmM2S1WzyxW12jrtxxRFyutwRPieUOB7PRkKBMNBRghmOhVzhxh9SI9aLsGP2MNxgt9hPSUusYEguJ%2BbKptIWDMpTJZbPznm5xfmdP5KnTwtFCSSqSzmWyuSaRRK5SqNXqjS1Ajaup6fUGw1G43QhltBxWexcdp2y6dR0JqK9LLjjqjgaTwYIUZUYfBx9PMb3yLOnqDC9TfHTT1OHZzedJxi8fxr9MZRgvIBh72EeRa8nyjaxqKNwikKrYSh2HBZDkCrNEqfaqjUADKqo9tq7SdBOBo%2BEaM4TAsFolFa6DzBwqqPva66ri6KabgmO73AS/qfF%2ByYhiCYIRjx0YvtYt7bg%2BbE4s%2B0GIpmxJVt%2BYE8iWAGGEBGkgcyv7gSW/JNrBsSqKQAgKAArPIpBsAotBWagCjMuC4bWBo2i6GCxh2aQBAKMoKhqAA1iA5mKKZChvFZNlKPZChWVwYW%2BTFahwLASC8PwQ
 hkBQEAZYIJQoKOMjGF0YWlIIVrEFwEADH5Vm8DwmAuKIAjbHVpD4KcyAsMUXDJQwzCsJwCgALTCMYJlmfIlnWe1DkGCYtDWJUhAICsAAcLwje8LRFYRerKD5dUBaQwWheF8iRbNMUMHF6ggIlx1qFNhhRXNd1Jf5ajKhwQ0gG8QA%3D%3D%3D

the code for the last function should probably look like the code for the
second function.

(I could be missing something, but it's worth filing anyhow).

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