Tom de Vries
120a01d160
[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 <tdevries@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.
From-SVN: r272321
2019-06-15 07:06:19 +00:00
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