[LLVMbugs] [Bug 557] NEW: [reassociate] missed reassociation opportunity

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=557

           Summary: [reassociate] missed reassociation opportunity
           Product: libraries
           Version: 1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


Reassociate should be able to turn this into two adds:

#define DannyB
int a, b, c, d;
        DannyB  int foo(void)
        DannyB  {
        DannyB  int e;
        DannyB  int f;
        DannyB  e = a + b;
        DannyB  e = e + c;
        DannyB  f = a + c;
        DannyB  f = f + b;
        DannyB  printf ("%d %d\n", e, f);
        }

-Chris



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