[Bug tree-optimization/125790] New: Wrong code for `(~x) >> (unsigned int)x`

[kristerw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125790

            Bug ID: 125790
           Summary: Wrong code for `(~x) >> (unsigned int)x`
           Product: gcc
           Version: 17.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kristerw at gcc dot gnu.org
            Blocks: 118443
  Target Milestone: ---

The test below fails on x86_64 when compiled with -O1:

long
f(long x)
{
  return (~x) >> (unsigned int)x;
}

int
main(void)
{
  if (f(0xffffffff0000003fL) != 0)
    __builtin_abort();
  return 0;
}


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118443
[Bug 118443] [Meta bug] Bugs triggered by and blocking more smtgcc testing