[LLVMbugs] [Bug 8321] New: MC-COFF: bogus reloc fixups to disp8/32

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8321

           Summary: MC-COFF: bogus reloc fixups to disp8/32
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Windows XP
            Status: ASSIGNED
          Severity: normal
          Priority: P
         Component: Backend: X86
        AssignedTo: bigcheesegs at gmail.com
        ReportedBy: geek4civic at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=5576)
 --> (http://llvm.org/bugs/attachment.cgi?id=5576)
pecoff object file w/o mc

; foo.ll
define void @foo() {
e:
  br label %i
i:
  br label %i
}

define void @bar() {
e:
  br label %i
i:
  br label %i
}

define void @baz() {
e:
  call void @baz()
  ret void
}

$ llc < foo.ll | as -o as-foo.o
$ llc -filetype=obj foo.ll -o mc-foo.o

* Disassembly of as-foo.o:
00000000 <_foo>:
   0:   eb fe                   jmp    0 <_foo>
00000010 <_bar>:
  10:   eb fe                   jmp    10 <_bar>
00000020 <_baz>:
  20:   83 ec 04                sub    $0x4,%esp
  23:   e8 f8 ff ff ff          call   20 <_baz>
  28:   83 c4 04                add    $0x4,%esp
  2b:   c3                      ret

* Disassembly of mc-foo.o:
00000000 <_foo>:
   0:   e9 00 00 00 00          jmp    5 <_foo+0x5>
00000010 <_bar>:
  10:   e9 10 00 00 00          jmp    25 <_baz+0x5>
00000020 <_baz>:
  20:   83 ec 04                sub    $0x4,%esp
  23:   e8 00 00 00 00          call   28 <_baz+0x8>
  28:   83 c4 04                add    $0x4,%esp
  2b:   c3                      ret

mc-foo.o has also *unneeded* relocations.
RELOCATION RECORDS FOR [.text]:
OFFSET   TYPE              VALUE
00000001 DISP32            .text
00000011 DISP32            .text
00000024 DISP32            _baz+0xffffffe0

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