[Bug bootstrap/84716] New: bootstrap fails on Darwin with internal compiler error: in compute_antic_aux, at tree-ssa-pre.c:2148

[mario-baumann at web dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84716

            Bug ID: 84716
           Summary: bootstrap fails on Darwin with internal compiler
                    error: in compute_antic_aux, at tree-ssa-pre.c:2148
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mario-baumann at web dot de
  Target Milestone: ---

Created attachment 43563
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43563&action=edit
delta reduction of isl_factorization.c

bootstrap fails on Darwin while compiling ISL file isl_factorization.c from
isl-0.16.1 during stage-2:

isl_factorization.c:44:17: internal compiler error: in compute_antic_aux, at
tree-ssa-pre.c:2148
 isl_factorizer* isl_basic_set_factorizer(isl_basic_map* bset)
                 ^~~~~~~~~~~~~~~~~~~~~~~~


> /Gcc/8.0.1/.bld/./prev-gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=/Gcc/8.0.1/.bld/./prev-gcc/xgcc
Target: x86_64-apple-darwin17
Configured with: /Gcc/8.0.1/.src/configure --prefix=/Gcc/8.0.1
--build=x86_64-apple-darwin17 --enable-languages=c,c++,fortran --enable-lto
--enable-stage1-checking --enable-libstdcxx-time --disable-nls
--disable-libquadmath --disable-libquadmath-support --with-ld=/opt/local/bin/ld
--with-ar=/opt/local/bin/ar --with-as=/opt/local/bin/as --with-system-zlib
--with-pkgversion=svn-revision-258242
Thread model: posix
gcc version 8.0.1 20180305 (experimental) (svn-revision-258242)


Findings:
- Delta reduction for isl_factorization.c is attached
- Locally compiled with:
  /Gcc/8.0.1/.bld/./prev-gcc/xgcc -B/Gcc/8.0.1/.bld/./prev-gcc/
-B/Gcc/8.0.1/x86_64-apple-darwin17/bin/ -B/Gcc/8.0.1/x86_64-apple-darwin17/bin/
 -c -O2 isl_factorization.c
- Compilation with -O1 and -O0 works fine