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From: "hiraditya at msn dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107005] New: gcc not exploiting undefined
 behavior to optimize away the result of division
Date: Wed, 21 Sep 2022 21:41:39 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: hiraditya at msn dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107005

            Bug ID: 107005
           Summary: gcc not exploiting undefined behavior to optimize away
                    the result of division
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hiraditya at msn dot com
  Target Milestone: ---

#include <limits.h>
int main() { return INT_MIN / -1; }

gcc -O2

main:
        mov     eax, -2147483648
        ret


clang -O2

main:                                   # @main
        ret



https://godbolt.org/z/Tjxx3KGdK=