[Bug lto/47891] GCC 4.6 LTO not worked reliable on Windows target

[dongsheng.song at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47891

--- Comment #2 from Dongsheng Song <dongsheng.song at gmail dot com> 2011-02-25 03:06:01 UTC ---
This issues only in 32bit, 64bit is fine:

$ i686-w64-mingw32-gcc -m64 -g -flto -o hello.c.64bit.lto.exe Hello.c
$ i686-w64-mingw32-objdump -d hello.c.64bit.lto.exe

00000000004029c0 <main>:
  4029c0:       55                      push   %rbp
  4029c1:       48 89 e5                mov    %rsp,%rbp
  4029c4:       48 83 ec 20             sub    $0x20,%rsp
  4029c8:       e8 13 f8 ff ff          callq  4021e0 <__main>
  4029cd:       48 8d 0d bc 18 00 00    lea    0x18bc(%rip),%rcx        #
404290 <.rdata>
  4029d4:       e8 17 00 00 00          callq  4029f0 <puts>
  4029d9:       b8 00 00 00 00          mov    $0x0,%eax
  4029de:       48 83 c4 20             add    $0x20,%rsp
  4029e2:       5d                      pop    %rbp
  4029e3:       c3                      retq
  4029e4:       90                      nop
  4029e5:       90                      nop
  4029e6:       90                      nop

$ i686-w64-mingw32-gcc -m64 -g -o hello.c.64bit.exe Hello.c
$ i686-w64-mingw32-objdump -d hello.c.64bit.exe

00000000004015c0 <main>:
  4015c0:       55                      push   %rbp
  4015c1:       48 89 e5                mov    %rsp,%rbp
  4015c4:       48 83 ec 20             sub    $0x20,%rsp
  4015c8:       e8 43 0c 00 00          callq  402210 <__main>
  4015cd:       48 8d 0d ac 2a 00 00    lea    0x2aac(%rip),%rcx        #
404080 <.rdata>
  4015d4:       e8 c7 12 00 00          callq  4028a0 <puts>
  4015d9:       b8 00 00 00 00          mov    $0x0,%eax
  4015de:       48 83 c4 20             add    $0x20,%rsp
  4015e2:       5d                      pop    %rbp
  4015e3:       c3                      retq
  4015e4:       90                      nop
  4015e5:       90                      nop
  4015e6:       90                      nop