On 6/12/19 11:54 AM, Tom de Vries wrote: > Hi, > > 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. > > OK for trunk? > > Thanks, > - Tom > > [openacc] Disable pass_thread_jumps for IFN_UNIQUE > > 2019-06-12 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. This really isn't a profitability test, but it's awkward to put the test in the earlier statement scan. So OK for the trunk.
jeff
