[LLVMbugs] [Bug 1301] NEW: So so code produced for Ada array traversal with a non-word index type

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1301

           Summary: So so code produced for Ada array traversal with a non-
                    word index type
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr


Split off from 1288.  The attached bytecode shows the problem:
these are all equivalent to a memset, or at worst to a simple
array traversal setting all elements to zero, but the optimized
code contains extra calculations.  The ultimate origin of these
is that the non-zero index value of the first array element in
the original Ada code.  The problem could be fixed by making the
induction variable be an i32 (or i64) rather than an i8.  Is
this the right solution?



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