https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87219
Bug ID: 87219 Summary: [9 Regression] internal compiler error: in check_loop_closed_ssa_def, at tree-ssa-loop-manip.c:709 Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com CC: rguenther at suse dot de Target Milestone: --- On x86-64, r264069 failed to build 200.sixtrack from SPEC CPU 2000: [hjl@gnu-35 00000002]$ /export/gnu/import/git/gcc-test-spec/usr/bin/-c -o clor6.o -DSPEC_CPU2000_LP64 -O3 -funroll-loops -ffast-math clor6.f bash: /export/gnu/import/git/gcc-test-spec/usr/bin/-c: No such file or directory [hjl@gnu-35 00000002]$ /export/gnu/import/git/gcc-test-spec/usr/bin/gfortran -c -o clor6.o -DSPEC_CPU2000_LP64 -O3 -funroll-loops -ffast-math clor6.f during GIMPLE pass: cunroll clor6.f:3:0: 3 | subroutine clor6 | internal compiler error: in check_loop_closed_ssa_def, at tree-ssa-loop-manip.c:709 0x6b272c check_loop_closed_ssa_def ../../src-trunk/gcc/tree-ssa-loop-manip.c:709 0xe792b0 check_loop_closed_ssa_bb ../../src-trunk/gcc/tree-ssa-loop-manip.c:735 0xe7b376 verify_loop_closed_ssa(bool, loop*) ../../src-trunk/gcc/tree-ssa-loop-manip.c:760 0xe64bda tree_unroll_loops_completely ../../src-trunk/gcc/tree-ssa-loop-ivcanon.c:1493 0xe64c54 execute ../../src-trunk/gcc/tree-ssa-loop-ivcanon.c:1597 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. [hjl@gnu-35 00000002]$