[Bug tree-optimization/96049] New: basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[Bug tree-optimization/96049] New: basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96049

            Bug ID: 96049
           Summary: basepoints/gcc-11-1649-gd2adb79eac66 crashes on
                    building 416.gamess with -O3 -flto
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mkuvyrkov at gcc dot gnu.org
  Target Milestone: ---

Linaro benchmarking CI flagged SHA1 due to compiler ICE'ing while build
SPEC2k6's 416.gamess with -O3 -flto -funconstrained-commons -std=legacy for
aarch64-linux-gnu:
1593354814.04: during GIMPLE pass: vect
1593354814.04: ecp.fppized.f: In function 'ecpdra':
1593354814.04: ecp.fppized.f:620: internal compiler error: in
compute_live_loop_exits, at tree-ssa-loop-manip.c:247
1593354814.04:   620 |       SUBROUTINE
ECPDRA(IC4C,NPNP,FP,FQ,COEFI,COEFQ,COEFJ,
1593354814.04:       | 
1593354815.35: 0xde105c compute_live_loop_exits
1593354815.35: 
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/snapshots/gcc.git~master/gcc/tree-ssa-loop-manip.c:247
1593354815.35: 0xde105c add_exit_phis_var
1593354815.35: 
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/snapshots/gcc.git~master/gcc/tree-ssa-loop-manip.c:334
1593354815.35: 0xde105c add_exit_phis
1593354815.35: 
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/snapshots/gcc.git~master/gcc/tree-ssa-loop-manip.c:356
1593354815.35: 0xde105c rewrite_into_loop_closed_ssa_1(bitmap_head*, unsigned
int, int, loop*)
1593354815.35: 
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/snapshots/gcc.git~master/gcc/tree-ssa-loop-manip.c:678
1593354815.35: 0xf539a7 vectorize_loops()
1593354815.35: 
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/snapshots/gcc.git~master/gcc/tree-vectorizer.c:1260
1593354815.40: Please submit a full bug report,
1593354815.40: with preprocessed source if appropriate.
1593354815.40: Please include the complete backtrace with any bug report.
1593354815.40: See <https://gcc.gnu.org/bugs/> for instructions.
1593354815.44: lto-wrapper: fatal error:
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/builds/destdir/x86_64-unknown-linux-gnu/bin/aarch64-linux-gnu-gfortran
returned 1 exit status
1593354815.44: compilation terminated.
1593354815.44:
/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/builds/destdir/x86_64-unknown-linux-gnu/lib/gcc/aarch64-linux-gnu/11.0.0/../../../../aarch64-linux-gnu/bin/ld:
error: lto-wrapper failed
1593354815.45: collect2: error: ld returned 1 exit status
1593354815.52: specmake: *** [gamess] Error 1

[Bug tree-optimization/96049] basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96049

Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mkuvyrkov at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org

--- Comment #1 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
Richard, would you please take a look?

[Bug tree-optimization/96049] basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96049

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2020-07-06
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
There were fixes after d2adb79eac6 in this area so does this still reproduce?

Unfortunately I'm not set up for doing aarch64 SPEC testing so I'd appreciate
if you could reduce preprocessed source so investigating with a cross compiler
is possible.

Martin - do we have aarch64 spec testing set up somewhere?

Maxim - how's your toolchain configured (default tuning/sub-arch)?

[Bug tree-optimization/96049] basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96049

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
> Martin - do we have aarch64 spec testing set up somewhere?

Not anymore. I turned if off as it's a SLE-12 machine where we don't a have a
recent enough GCC to build current master. Moreover, the test results are quite
unstable.

[Bug tree-optimization/96049] basepoints/gcc-11-1649-gd2adb79eac66 crashes on building 416.gamess with -O3 -flto

[mkuvyrkov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96049

Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> changed:

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

--- Comment #4 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> ---
Hi Richard,

This is indeed fixed on current mainline.

For the record, we benchmark cross-toolchains for both aarch64-linux-gnu and
arm-linux-gnueabihf (we want to benchmark LTO builds and at least ARMv7
machines don't have enough RAM).  SPEC2k6 harness runs natively on the
benchmarking ARMv8 and ARMv7 boards, and it calls compiler wrappers for remote
compilation on x86_64 boxes.

Configure options are fairly standard for a cross-toolchain:
--with-gnu-as --with-gnu-ld --disable-libmudflap --enable-lto --enable-shared
--without-included-gettext --enable-nls --with-system-zlib
--disable-sjlj-exceptions --enable-gnu-unique-object --enable-linker-build-id
--disable-libstdcxx-pch --enable-c99 --enable-clocale=gnu
--enable-libstdcxx-debug --enable-long-long --with-cloog=no --with-ppl=no
--with-isl=no --disable-multilib --enable-fix-cortex-a53-835769
--enable-fix-cortex-a53-843419 --with-arch=armv8-a --enable-threads=posix
--enable-multiarch --enable-libstdcxx-time=yes --enable-gnu-indirect-function
--disable-libsanitizer
--with-build-sysroot=/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/sysroots/aarch64-linux-gnu
--with-sysroot=/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/builds/destdir/x86_64-unknown-linux-gnu/aarch64-linux-gnu/libc
--enable-checking=yes --disable-bootstrap --enable-languages=c,c++,fortran,lto
--build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu
--target=aarch64-linux-gnu
--prefix=/home/tcwg-buildslave/workspace/tcwg_bmk_0/abe/builds/destdir/x86_64-unknown-linux-gnu