[LLVMbugs] [Bug 15961] New: Testcase we don't devirtualize

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15961

            Bug ID: 15961
           Summary: Testcase we don't devirtualize
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10492
  --> http://llvm.org/bugs/attachment.cgi?id=10492&action=edit
testcase

This is extracted (and simplified a bit) from 8886 so that we have one case per
bug.

With gcc 4.8 the main function compiles down to just

main:
        pushq   %rbx
        movl    $3, %ebx
.L11:
        xorl    %eax, %eax
        movl    $3, %esi
        movl    $.LC0, %edi
        call    printf
        subl    $1, %ebx
        jne     .L11
        xorl    %eax, %eax
        popq    %rbx
        ret

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