[Bug ipa/65006] [5 Regression] 252.eon in SPEC CPU 2000 miscompiled with LTO

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65006

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---
            Summary|[5 Regression] 252.eon in   |[5 Regression] 252.eon in
                   |SPEC CPU 2000 miscompiled   |SPEC CPU 2000 miscompiled
                   |                            |with LTO

--- Comment #11 from H.J. Lu <hjl.tools at gmail dot com> ---
r220521 miscompiled 252.eon in SPEC CPU 2000 with LTO for both x86-32:

https://gcc.gnu.org/ml/gcc-testresults/2015-02/msg01063.html

and x32:

https://gcc.gnu.org/ml/gcc-testresults/2015-02/msg01047.html

X86-32 was fixed:

https://gcc.gnu.org/ml/gcc-testresults/2015-02/msg01417.html

But not:

https://gcc.gnu.org/ml/gcc-testresults/2015-02/msg01406.html

I got

[hjl@gnu-mic-2 00000002]$ ../00000002/eon_peak.lto chair.control.cook
chair.camera chair.surfaces chair.cook.ppm ppm pixels_out.cook
Segmentation fault
[hjl@gnu-mic-2 00000002]$ gdb ../00000002/eon_peak.lto
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Reading symbols from ../00000002/eon_peak.lto...done.
(gdb) r chair.control.cook chair.camera chair.surfaces chair.cook.ppm ppm
pixels_out.cook
Starting program:
/export/project/git/gcc-regression/spec/2000/spec/benchspec/CINT2000/252.eon/run/00000002/eon_peak.lto
chair.control.cook chair.camera chair.surfaces chair.cook.ppm ppm
pixels_out.cook

Program received signal SIGSEGV, Segmentation fault.
0x0042078c in operator*(ggSpectrum const&, ggSpectrum const&) ()
Missing separate debuginfos, use: debuginfo-install glibc-2.18-16.0.fc20.x32
libgcc-4.8.3-7.2.fc20.x86_64 libstdc++-4.8.3-7.2.fc20.x86_64
(gdb) bt
#0  0x0042078c in operator*(ggSpectrum const&, ggSpectrum const&) ()
#1  0x004452d4 in eonImageCalculator::eonImageCalculator() ()
#2  0x0040378a in main ()
(gdb) f 0
#0  0x0042078c in operator*(ggSpectrum const&, ggSpectrum const&) ()
(gdb) disass
Dump of assembler code for function _ZmlRK10ggSpectrumS1_:
   0x00420780 <+0>:    movups (%esi),%xmm0
   0x00420784 <+4>:    mov    %rdi,%rax
   0x00420787 <+7>:    movups 0x10(%esi),%xmm1
=> 0x0042078c <+12>:    mulps  (%edx),%xmm0
   0x00420790 <+16>:    mulps  0x10(%edx),%xmm1
   0x00420795 <+21>:    movups %xmm0,(%edi)
   0x00420799 <+25>:    movups %xmm1,0x10(%edi)
   0x0042079e <+30>:    retq   
End of assembler dump.
(gdb) p $edx
$1 = -13304
(gdb) p/x $edx
$2 = 0xffffcc08