[LLVMbugs] [Bug 2048] New: Invalid division incombine with division by constants

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2048

           Summary: Invalid division incombine with division by constants
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


Take the following function:

int i(int a) {return a/-1431655765/3;}

LLVM concludes that this is equivalent to the following:

define i32 @i(i32 %a) nounwind  {
entry:
        ret i32 %a
}

This is clearly wrong.


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