[llvm-bugs] [Bug 30886] New: extra swaps generated for simple vectorized loop

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30886

            Bug ID: 30886
           Summary: extra swaps generated for simple vectorized loop
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: unassignedbugs at nondot.org
          Reporter: amehsan at ca.ibm.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

the loop in question is this:
void test (float *__restrict__ a, float *__restrict__ b, int n,  float c)
{
   for (int i = 0; i < n; ++i) {
      b[i] = c * a[i];
   }
}

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