https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106438
Bug ID: 106438
Summary: powerpc: ICE when building libgfortran with -lto: in
insert_value_copy_on_edge, at tree-outof-ssa.cc:334
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
Assignee: unassigned at gcc dot gnu.org
Reporter: msc at linux dot ibm.com
Target Milestone: ---
Compiling libgfortran with -lto (see small patch [1] below) is failing on
powerpc64le (testd on P10, but may apply to older processors as well) with
current trunk:
$ git gcc-descr HEAD
r12-10142-ga6efab5fbc468b
$ cd ~/build/gcc/ && ~/AT/pr2981/build/sources/gcc/configure
--build=powerpc64le-linux-gnu --host=powerpc64le-linux-gnu
--target=powerpc64le-linux-gnu --cache-file=configparms
--prefix=/home/mscastanho/usr --with-long-double-128 --enable-secureplt
--disable-multilib --enable-threads=posix --enable-languages=fortran
--disable-bootstrap --enable-__cxa_atexit --enable-shared
--enable-checking=release --enable-gnu-indirect-function --enable-lto
--enable-linker-build-id --without-ppl --without-cloog --without-libelf
--with-system-zlib --with-cpu=power10 --with-tune=power10 && make -j60 &>
_make; echo $?
Error:
during RTL pass: expand
/home/mscastanho/AT/pr2981/build/sources/gcc/libgfortran/generated/maxloc0_4_r17.c:
In function 'maxloc0_4_r17':
/home/mscastanho/AT/pr2981/build/sources/gcc/libgfortran/generated/maxloc0_4_r17.c:38:1:
internal compiler error: in insert_value_copy_on_edge, at tree-outof-ssa.cc:334
38 | maxloc0_4_r17 (gfc_array_i4 * const restrict retarray,
| ^
0x108ea89b insert_value_copy_on_edge
/home/mscastanho/AT/pr2981/build/sources/gcc/gcc/tree-outof-ssa.cc:334
0x108ea89b eliminate_phi
/home/mscastanho/AT/pr2981/build/sources/gcc/gcc/tree-outof-ssa.cc:785
0x108ea89b expand_phi_nodes(ssaexpand*)
/home/mscastanho/AT/pr2981/build/sources/gcc/gcc/tree-outof-ssa.cc:1024
0x10252a1f execute
/home/mscastanho/AT/pr2981/build/sources/gcc/gcc/cfgexpand.cc:6799
Git bisect is pointing to this commit:
commit 133d0d422ebd18dbd215cfa5394aff9f938e7060
Author: Jakub Jelinek <ja...@redhat.com>
Date: Tue Jun 28 13:05:28 2022 +0200
fortran, libgfortran: Avoid using libquadmath for glibc 2.26+
[1]
https://raw.githubusercontent.com/powertechpreview/powertechpreview/0be24b142a81e44ac4abadb3fde4eb0010b79f70/GCC%20PowerPC%20Backport/9/gcc-9-lto.patch
