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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/112646] New: bootstrap broken for clang build on
 znver3 ?
Date: Tue, 21 Nov 2023 09:41:22 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: bootstrap
X-Bugzilla-Version: 14.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112646

            Bug ID: 112646
           Summary: bootstrap broken for clang build on znver3 ?
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Since yesterday, a build of gcc trunk on znver3 with clang
has broken.

Good commit was g:e85c596ae2d1e5f5, bad g:f48244fad2afba7a.

The error message from clang is

/home/dcb38/gcc/working/gcc/include/avx512vp2intersectvlintrin.h:42:3: erro=
r:
=E2=80=98__builtin_ia32_2intersectd128=E2=80=99 was not declared in this sc=
ope; did you mean
=E2=80=98__builtin_ia32_2intersectd512=E2=80=99?

The configure is

CC=3D"clang" CXX=3D"clang++" \
../trunk.year/configure --prefix=3D/home/dcb38/gcc/results.$DATE.asan.ubsan=
 \
    --disable-multilib \
    --disable-bootstrap \
    --with-build-config=3Dbootstrap-asan \
    --with-build-config=3Dbootstrap-ubsan \
    --with-pkgversion=3D$HASH \
    --enable-checking=3Ddf,extra,fold,rtl,yes \
    --enable-languages=3Dc,c++,fortran

sed 's;-O2;-O2 -march=3Dznver3;' < Makefile > Makefile.tmp
diff Makefile Makefile.tmp
mv Makefile.tmp Makefile=