On Wed, 2009-07-29 at 15:36 +0200, Tomek Grabiec wrote: > Liveness analysis can produce intervals with range not ending at a use > position. When splitting such interval after last use position we get > the new interval with non-zero range length and without use positions. > We should not add such intervals to the "unhandled" list. > > This bug led to incorrect compilation of > > java/lang/Thread.<init>(Ljava/lang/ThreadGroup;Ljava/lang/Runnable;)V > > because of splitting an interval with no use position. The bug didn't > produce noticeable runtime effects when jato was compiled with > -Os. When compiled with -O0 or -O2 it was failing in assertion: > > jit/spill-reload.c:51: last_insn: Assertion `ret != ((void *)0)' failed. > > Signed-off-by: Tomek Grabiec <tgrab...@gmail.com>
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