On Sun, May 18, 2025 at 11:19 PM haochen.jiang
<haoch...@shliclel4214.sh.intel.com> wrote:
>
> On Linux/x86_64,
>
> 064cac730f88dc71c6da578f9ae5b8e092ab6cd4 is the first bad commit
> commit 064cac730f88dc71c6da578f9ae5b8e092ab6cd4
> Author: Jan Hubicka <hubi...@ucw.cz>
> Date:   Sun May 4 10:52:35 2025 +0200
>
>     Improve maybe_hot handling in inliner heuristics
>
> caused
>
> FAIL: gcc.dg/tree-ssa/gen-vect-28.c scan-tree-dump-times vect "Alignment of 
> access forced using peeling" 1
> FAIL: gcc.dg/tree-ssa/gen-vect-28.c scan-tree-dump-times vect "vectorized 1 
> loops" 1
> FAIL: gcc.dg/tree-ssa/pr81627.c scan-tree-dump-times pcom "Store-stores 
> chain" 1

This is just an extra inlining which causes pcom to happen twice now.
Will look into fix that this coming week.


> FAIL: gcc.target/i386/avx512vl-vpmovuswb-2.c (test for excess errors)
> FAIL: gcc.target/i386/avx512vl-vpmovwb-2.c (test for excess errors)
> FAIL: g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C   -O2  execution 
> test
> FAIL: g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C   -O2 -flto 
> -fno-use-linker-plugin -flto-partition=none  execution test
> FAIL: g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C   -O3 -g  
> execution test
> FAIL: g++.dg/coroutines/torture/func-params-07.C   -O2  execution test
> FAIL: g++.dg/coroutines/torture/func-params-07.C   -O3 -g  execution test
> FAIL: g++.dg/coroutines/torture/pr103953.C   -O2  execution test
> FAIL: g++.dg/coroutines/torture/pr103953.C   -O3 -g  execution test

The coroutines failures might be a front-end issue or a testcase issue
dealing with operator new.

> FAIL: g++.dg/vect/pr64410.cc  -std=c++17  scan-tree-dump vect "vectorized 1 
> loops in function"
> FAIL: g++.dg/vect/pr64410.cc  -std=c++26  scan-tree-dump vect "vectorized 1 
> loops in function"
> FAIL: gfortran.dg/guality/arg1.f90   -O3 -fomit-frame-pointer -funroll-loops 
> -fpeel-loops -ftracer -finline-functions  line 14 a(10) == 10



> FAIL: gfortran.dg/specifics_1.f90   -O2  execution test
> FAIL: gfortran.dg/specifics_1.f90   -O3 -fomit-frame-pointer -funroll-loops 
> -fpeel-loops -ftracer -finline-functions  execution test
> FAIL: gfortran.dg/specifics_1.f90   -O3 -g  execution test

The specifics_1 failure is a front-end bug which is being fixed:
https://gcc.gnu.org/pipermail/gcc-patches/2025-May/684016.html .

>
> with GCC configured with
>
> ../../gcc/configure 
> --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r16-372/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="tree-ssa.exp=gcc.dg/tree-ssa/gen-vect-28.c 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/gen-vect-28.c 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/pr81627.c 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/pr81627.c 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/pr81627.c 
> --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/pr81627.c 
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovuswb-2.c 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovuswb-2.c 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovuswb-2.c 
> --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovuswb-2.c 
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovwb-2.c 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovwb-2.c 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovwb-2.c 
> --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="i386.exp=gcc.target/i386/avx512vl-vpmovwb-2.c 
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C
>  --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C
>  --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C
>  --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/exceptions-test-01-n4849-a.C
>  --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/func-params-07.C 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/func-params-07.C 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/func-params-07.C 
> --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/func-params-07.C 
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/pr103953.C 
> --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/pr103953.C 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/pr103953.C 
> --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="coro-torture.exp=g++.dg/coroutines/torture/pr103953.C 
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="vect.exp=g++.dg/vect/pr64410.cc --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="vect.exp=g++.dg/vect/pr64410.cc --target_board='unix{-m32\ 
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="vect.exp=g++.dg/vect/pr64410.cc --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="vect.exp=g++.dg/vect/pr64410.cc --target_board='unix{-m64\ 
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="guality.exp=gfortran.dg/guality/arg1.f90 
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="dg.exp=gfortran.dg/specifics_1.f90 --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="dg.exp=gfortran.dg/specifics_1.f90 --target_board='unix{-m32\ 
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="dg.exp=gfortran.dg/specifics_1.f90 --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check 
> RUNTESTFLAGS="dg.exp=gfortran.dg/specifics_1.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.)

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