RE: [r16-4468 Regression] FAIL: gcc.dg/ipa/ipcp-cb-spec2.c (test for excess errors) on Linux/x86_64

> From: Jiang, Haochen <[email protected]>
> Sent: Tuesday, October 21, 2025 10:23 AM
> 
> On Linux/x86_64,
> 
> 7cd91c7c42eec894c8c13fa68ccc12ec3a047c9a is the first bad commit
> commit 7cd91c7c42eec894c8c13fa68ccc12ec3a047c9a
> Author: Josef Melcr <[email protected]>
> Date:   Thu Oct 16 16:25:29 2025 +0200
> 
>     ipa, cgraph: Enable constant propagation to OpenMP kernels.
> 
> caused
> 
> FAIL: gcc.dg/ipa/ipcp-cb1.c (test for excess errors)
> FAIL: gcc.dg/ipa/ipcp-cb-spec1.c (test for excess errors)
> FAIL: gcc.dg/ipa/ipcp-cb-spec2.c (test for excess errors)
> 

Seems already solved according to:
https://gcc.gnu.org/pipermail/gcc-regression/2025-October/082823.html

Thx,
Haochen

> with GCC configured with
> 
> ../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-
> bisect/master/master/r16-4468/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="ipa.exp=gcc.dg/ipa/ipcp-
> cb1.c --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb1.c --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb1.c --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb1.c --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec1.c --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec1.c --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec1.c --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec1.c --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec2.c --target_board='unix{-m32}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec2.c --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec2.c --target_board='unix{-m64}'"
> $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ipa.exp=gcc.dg/ipa/ipcp-
> cb-spec2.c --target_board='unix{-m64\ -march=cascadelake}'"
> 
> (Please directly reply to this email for question about this report.)
> (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.)