https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90009
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> --- Author: vries Date: Sat Jun 15 07:06:19 2019 New Revision: 272321 URL: https://gcc.gnu.org/viewcvs?rev=272321&root=gcc&view=rev Log: [openacc] Disable pass_thread_jumps for IFN_UNIQUE If we compile the openacc testcase with -fopenacc -O2, we run into a SIGSEGV or assert. The root cause for this is that pass_thread_jumps breaks the invariant that OACC_FORK and OACC_JOIN mark the start and end of a single-entry-single-exit region. Fix this by bailing out when encountering an IFN_UNIQUE in thread_jumps::profitable_jump_thread_path. Bootstrapped and reg-tested on x86_64. Build and reg-tested libgomp on x86_64 with nvptx accelerator. 2019-06-15 Tom de Vries <tdevr...@suse.de> PR tree-optimization/90009 * tree-ssa-threadbackward.c (thread_jumps::profitable_jump_thread_path): Return NULL if bb contains IFN_UNIQUE. * testsuite/libgomp.oacc-c-c++-common/pr90009.c: New test. Added: trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/pr90009.c Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-threadbackward.c trunk/libgomp/ChangeLog
