* gcc.dg/simulate-thread/simulate-thread.gdb: Use return value from
simulate_thread_wrapper_other_threads
* gcc.dg/simulate-thread/atomic-load-int128.c (simulate_thread_main):
Move initialization of 'value' to main().
(main): Initialize 'value';
* gcc.dg/simulate-thread/speculative-store.c
(simulate_thread_step_verify): Return 0 when successful.
* gcc.dg/simulate-thread/simulate-thread.h (HOSTILE_THREAD_THRESHOLD):
Reduce threshold.
(INSN_COUNT_THRESHOLD): New. Instruction limit to terminate test.
(simulate_thread_wrapper_other_threads): Return a success/fail value
and issue an error if the instruction count threshold is exceeded.
From-SVN: r184564
