[Bug target/65414] New: [5 Regression] ICE, bootstrap failure on aarch64-linux-gnu in stage2

[Bug target/65414] New: [5 Regression] ICE, bootstrap failure on aarch64-linux-gnu in stage2

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

            Bug ID: 65414
           Summary: [5 Regression] ICE, bootstrap failure on
                    aarch64-linux-gnu in stage2
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

seen with r221296

https://launchpadlibrarian.net/200077696/buildlog_ubuntu-vivid-arm64.gcc-5_5-20150312-1ubuntu11_BUILDING.txt.gz

make[6]: Leaving directory
'/build/buildd/gcc-5-5-20150312/build/aarch64-linux-gnu/libgcc'
/build/buildd/gcc-5-5-20150312/build/./gcc/xgcc
-B/build/buildd/gcc-5-5-20150312/build/./gcc/ -B/usr/aarch64-linux-gnu/bin/
-B/usr/aarch64-linux-gnu/lib/ -isystem /usr/aarch64-linux-gnu/include -isystem
/usr/aarch64-linux-gnu/sys-include -isystem
/build/buildd/gcc-5-5-20150312/build/sys-include    -g -O2 -O2  -g -O2 -DIN_GCC
   -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include   -fPIC -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector   -fPIC -I. -I.
-I../.././gcc -I../../../src/libgcc -I../../../src/libgcc/.
-I../../../src/libgcc/../gcc -I../../../src/libgcc/../include  -DHAVE_CC_TLS 
-o _clear_cache.o -MT _clear_cache.o -MD -MP -MF _clear_cache.dep
-DL_clear_cache -c ../../../src/libgcc/libgcc2.c -fvisibility=hidden
-DHIDE_EXPORTS
In file included from ../.././gcc/tconfig.h:8:0,
                 from ../../../src/libgcc/libgcc2.c:26:
../../../src/libgcc/../include/ansidecl.h:1:0: internal compiler error:
Segmentation fault
 /* ANSI and traditional C compatability macros
 ^
In file included from ../.././gcc/tconfig.h:8:0,
                 from ../../../src/libgcc/libgcc2.c:26:
../../../src/libgcc/../include/ansidecl.h:1:0: internal compiler error:
Segmentation fault
 /* ANSI and traditional C compatability macros
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
In file included from ../.././gcc/tconfig.h:8:0,
                 from ../../../src/libgcc/libgcc2.c:26:
../../../src/libgcc/../include/ansidecl.h:1:0: internal compiler error:
Segmentation fault
 /* ANSI and traditional C compatability macros
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Makefile:466: recipe for target '_muldi3.o' failed
make[5]: *** [_muldi3.o] Error 1
make[5]: *** Waiting for unfinished jobs....
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Makefile:466: recipe for target '_negdi2.o' failed
make[5]: *** [_negdi2.o] Error 1
Makefile:466: recipe for target '_ashrdi3.o' failed
make[5]: *** [_ashrdi3.o] Error 1
Makefile:466: recipe for target '_ashldi3.o' failed
make[5]: *** [_ashldi3.o] Error 1
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |5.0

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

Matthias Klose <doko at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|aarch64-linux-gnu           |aarch64-linux-gnu,
                   |                            |arm-linux-gnuebihf
                 CC|                            |ramana at gcc dot gnu.org

--- Comment #1 from Matthias Klose <doko at gcc dot gnu.org> ---
same on arm-linux-gnuebihf

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-03-13
                 CC|                            |avelenko at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Alex Velenko was looking into something similar today.

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Any specific configure options?  aarch64-linux bootstrapped/regtested just fine
last night for me with --enable-checking=release.

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #4 from Matthias Klose <doko at gcc dot gnu.org> ---
still seen with r221436

Configured with: -v
     --with-pkgversion='Ubuntu 5-20150314-1ubuntu11'
     --with-bugurl='file:///usr/share/doc/gcc-5/README.Bugs'
     --enable-languages=c,c++,java,go,fortran,objc,obj-c++
     --prefix=/usr
     --program-suffix=-5
     --enable-shared
     --enable-linker-build-id
     --libexecdir=/usr/lib
     --without-included-gettext
     --enable-threads=posix
     --with-gxx-include-dir=/usr/include/c++/5
     --libdir=/usr/lib
     --enable-nls
     --with-sysroot=/
     --enable-clocale=gnu
     --enable-libstdcxx-debug
     --enable-libstdcxx-time=yes
     --with-default-libstdcxx-abi=c++98
     --enable-gnu-unique-object
     --disable-libquadmath
     --enable-plugin
     --with-system-zlib
     --disable-browser-plugin
     --enable-java-awt=gtk
     --enable-gtk-cairo
     --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre
     --enable-java-home
     --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64
     --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64
     --with-arch-directory=arm64
     --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
     --enable-multiarch
     --disable-werror
     --enable-checking=release
     --build=aarch64-linux-gnu
     --host=aarch64-linux-gnu
     --target=aarch64-linux-gnu

build logs at
https://launchpad.net/~doko/+archive/ubuntu/toolchain/+sourcepub/4835737/+listing-archive-extra

#0  0x0000000000d3ca70 in num_part_mul(unsigned long, unsigned long) ()
#1  0x0000000000d3ee44 in _cpp_parse_expr ()
#2  0x0000000000d3ee44 in _cpp_parse_expr ()
[...]
#675 0x0000000000d3ee44 in _cpp_parse_expr ()
#676 0x0000000000d3ee44 in _cpp_parse_expr ()
#677 0x0000000000d3ee44 in _cpp_parse_expr ()
[...]

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #5 from Matthias Klose <doko at gcc dot gnu.org> ---
I see two different ICEs in the ARM32 build. 

../../../src/libgcc/libgcc2.c: In function '__gcc_bcmp':
../../../src/libgcc/libgcc2.c:2086:1: internal compiler error: in
iv_ca_delta_commit, at tree-ssa-loop-ivopts.c:5622
 __gcc_bcmp (const unsigned char *s1, const unsigned char *s2, size_t size)
 ^

and the segfault as before. Note this is in the soft-float multilib, which I
build using a local patch. I'll see if I can reproduce it on the Debian armel
architecture.

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I can reproduce this with the following options to configure:
../configure --prefix=/data/gcc-ubuntu

--- CUT ---
I am going to try a different base compiler to see what happens.

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is some memory issue going on here.
If I rebuild libcpp/expr.o manually and not from full build we get:
        cmp     x14, xzr
        cset    w22, ne
        cmp     x19, xzr
        cset    w0, ne
        and     w22, w22, w0
        .loc 1 1956 0
        ldr     x8, [x29, 152]
        mov     x0, x23
        mov     x1, x19
        bl      _ZL12num_part_mulmm

But the built one gets:
   0x0000000000f712b8 <_cpp_parse_expr+1600>:   cmp     x14, xzr
   0x0000000000f712bc <_cpp_parse_expr+1604>:   cset    w22, ne
   0x0000000000f712c0 <_cpp_parse_expr+1608>:   cmp     x19, xzr
   0x0000000000f712c4 <_cpp_parse_expr+1612>:   cset    w0, ne
   0x0000000000f712c8 <_cpp_parse_expr+1616>:   and     w22, w22, w0
   0x0000000000f712cc <_cpp_parse_expr+1620>:   mov     x0, x23
   0x0000000000f712d0 <_cpp_parse_expr+1624>:   mov     x8, x16
   0x0000000000f712d4 <_cpp_parse_expr+1628>:   mov     x1, x19
   0x0000000000f712d8 <_cpp_parse_expr+1632>:   bl      0xf6eee0
<_ZL12num_part_mulmm>

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
It is working with 2ed7acc3505bbfed6a80787cf2537e212ff2bbe2 (revision 221332).

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> It is working with 2ed7acc3505bbfed6a80787cf2537e212ff2bbe2 (revision
> 221332).

Fails with f4aade0acf5728ebadda80b38944f427a000e255 (revision 221402)

[Bug target/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
 132858c819691c84077f130a5e7021961c0fb3ef (revision 221370) works.

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |build, wrong-code
                 CC|                            |vries at gcc dot gnu.org
          Component|target                      |middle-end
           Severity|normal                      |blocker

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am almost 100% sure it was caused by e2a16b9122d238b8877640b5f6ef1599e195fae0
(revision 221372).  I am checking if reverting this patch from the current
upstream will not crash.

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #11)
> I am almost 100% sure it was caused by
> e2a16b9122d238b8877640b5f6ef1599e195fae0 (revision 221372).  I am checking
> if reverting this patch from the current upstream will not crash.

yes reverting that patch fixes the bootstrap for me.

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #13 from vries at gcc dot gnu.org ---
Author: vries
Date: Mon Mar 16 09:42:21 2015
New Revision: 221448

URL: https://gcc.gnu.org/viewcvs?rev=221448&root=gcc&view=rev
Log:
Revert 'Use actual_call_used_reg_set to find conflicting regs'

2015-03-16  Tom de Vries  <tom@codesourcery.com>

    PR middle-end/65414
    Revert:
    2015-03-12  Tom de Vries  <tom@codesourcery.com>

    PR rtl-optimization/64895
    * lra-lives.c (check_pseudos_live_through_calls): Use
    actual_call_used_reg_set instead of call_used_reg_set, if available.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-lives.c

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #14 from vries at gcc dot gnu.org ---
Problematic patch has been reverted, so this PR should be fixed.

The original PR related to the PR, PR 64895 has beeen reopened.

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #15 from vries at gcc dot gnu.org ---
If somebody happens to have a commandline and .i file with which the problem
can be reproduced using a non-bootstrap compiler, please attach it here.

Thanks,
- Tom

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
While I couldn't reproduce this on aarch64-linux, on arm-linux-gnueabihf
without the revert all my bootstraps since Friday ended up with ICEs, both
profiledbootstrap and normal bootstraps; for --with-default-libstdcxx-abi=c++98
builds somewhere in gnat-tools build (but with corrupted backtraces, didn't
figure out anything useful yet how to debug) and for the default new C++ ABI
builds somewhere during PCH creation in libstdc++.
With the problematic patch reverted normal bootstrap build is now already in
make check phase past the bootstrap failure point, and two differently
configured profiledbootstraps are progressing nicely so far.  But really don't
have a short reproducer for either, sorry.

[Bug middle-end/65414] [5 Regression] ICE while building libgcc after stage 2, bootstrap failure on aarch64-linux-gnu

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65414

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to vries from comment #15)
> If somebody happens to have a commandline and .i file with which the problem
> can be reproduced using a non-bootstrap compiler, please attach it here.
> 

I don't know if it is relevant. On Linux/x86-64, r221372 may have caused

FAIL: gcc.dg/guality/pr43051-1.c   -O2  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O2  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O2  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-loops 
line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-loops 
line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-loops 
line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-loops 
line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -fomit-frame-pointer -funroll-loops 
line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -g  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -g  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -g  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -g  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -O3 -g  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -Os  line 35 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -Os  line 36 e == &a[1]
FAIL: gcc.dg/guality/pr43051-1.c   -Os  line 39 c == &a[0]
FAIL: gcc.dg/guality/pr43051-1.c   -Os  line 40 v == 1
FAIL: gcc.dg/guality/pr43051-1.c   -Os  line 41 e == &a[1]
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 15 l == 10
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 15 x == 7
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 24 l == 10
FAIL: gcc.dg/guality/pr43177.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 24 x == 7
FAIL: gcc.dg/guality/pr54519-3.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 20 x == 36
FAIL: gcc.dg/guality/pr54519-3.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 23 x == 98
FAIL: gcc.dg/guality/pr54519-4.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 17 x == 6
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 21 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 21 a.j == 14
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 43 a.i == 4
FAIL: gcc.dg/guality/sra-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 43 a.j == 14
FAIL: gcc.dg/guality/vla-2.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  line 25 sizeof (a) == 6 * sizeof (int)

with

# make check RUNTESTFLAGS="--target_board='unix{-fpic,-mcmodel=medium,-fpic\
-mcmodel=medium}'"

You can try RUNTESTFLAGS="--target_board='unix{-fpic}'" first.