[r14-7003 Regression] FAIL: gfortran.dg/power_8.f90 -O3 -g execution test on Linux/x86_64

[r14-7003 Regression] FAIL: gfortran.dg/power_8.f90 -O3 -g execution test on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

b3cc5a1efead520bc977b4ba51f1328d01b3e516 is the first bad commit
commit b3cc5a1efead520bc977b4ba51f1328d01b3e516
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Dec 15 10:32:29 2023 +0100

    tree-optimization/113026 - avoid vector epilog in more cases

caused

FAIL: gcc.c-torture/execute/950612-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gcc.c-torture/execute/950612-1.c   -O3 -g  execution test
FAIL: gcc.c-torture/execute/builtin-bitops-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gcc.c-torture/execute/builtin-bitops-1.c   -O3 -g  execution test
FAIL: gcc.dg/vect/vect-early-break_74.c execution test
FAIL: gcc.dg/vect/vect-early-break_74.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-early-break_78.c execution test
FAIL: gcc.dg/vect/vect-early-break_78.c -flto -ffat-lto-objects execution test
FAIL: gfortran.dg/power_8.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/power_8.f90   -O3 -g  execution test

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-7003/usr --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl --enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check RUNTESTFLAGS="execute.exp=gcc.c-torture/execute/950612-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="execute.exp=gcc.c-torture/execute/950612-1.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="execute.exp=gcc.c-torture/execute/builtin-bitops-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="execute.exp=gcc.c-torture/execute/builtin-bitops-1.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-early-break_74.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-early-break_74.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-early-break_78.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-early-break_78.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/power_8.f90 --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/power_8.f90 --target_board='unix{-m64\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at haochen dot jiang at intel.com.)
(If you met problems with cascadelake related, disabling AVX512F in command line might save that.)
(However, please make sure that there is no potential problems with AVX512.)

Re: [r14-7003 Regression] FAIL: gfortran.dg/power_8.f90 -O3 -g execution test on Linux/x86_64

[Richard Biener]

On Tue, 9 Jan 2024, haochen.jiang wrote:

> On Linux/x86_64,
> 
> b3cc5a1efead520bc977b4ba51f1328d01b3e516 is the first bad commit
> commit b3cc5a1efead520bc977b4ba51f1328d01b3e516
> Author: Richard Biener <rguenther@suse.de>
> Date:   Fri Dec 15 10:32:29 2023 +0100
> 
>     tree-optimization/113026 - avoid vector epilog in more cases
> 
> caused
> 
> FAIL: gcc.c-torture/execute/950612-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
> FAIL: gcc.c-torture/execute/950612-1.c   -O3 -g  execution test
> FAIL: gcc.c-torture/execute/builtin-bitops-1.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
> FAIL: gcc.c-torture/execute/builtin-bitops-1.c   -O3 -g  execution test
> FAIL: gcc.dg/vect/vect-early-break_74.c execution test
> FAIL: gcc.dg/vect/vect-early-break_74.c -flto -ffat-lto-objects execution test
> FAIL: gcc.dg/vect/vect-early-break_78.c execution test
> FAIL: gcc.dg/vect/vect-early-break_78.c -flto -ffat-lto-objects execution test
> FAIL: gfortran.dg/power_8.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
> FAIL: gfortran.dg/power_8.f90   -O3 -g  execution test

This should be fixed now.

Richard.