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re PR bootstrap/79069 (Bootstrap failure on s390x-linux while building libgo)

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PR bootstrap/79069
	* cfgrtl.c (rtl_tidy_fallthru_edge): For any_uncondjump_p that can't
	be removed due to side-effects, don't remove following barrier nor
	turn the successor edge into fallthru edge.

From-SVN: r244383
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Jakub Jelinek 2017-01-12 22:29:43 +01:00 committed by Jakub Jelinek
parent 940242cd07
commit b34f29a19d
2 changed files with 11 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,10 @@
2017-01-12 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/79069
* cfgrtl.c (rtl_tidy_fallthru_edge): For any_uncondjump_p that can't
be removed due to side-effects, don't remove following barrier nor
turn the successor edge into fallthru edge.
2017-01-12 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR target/79044

4
gcc/cfgrtl.c
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@ -1794,6 +1794,10 @@ rtl_tidy_fallthru_edge (edge e)
q = PREV_INSN (q);
}
/* Unconditional jumps with side-effects (i.e. which we can't just delete
together with the barrier) should never have a fallthru edge. */
else if (JUMP_P (q) && any_uncondjump_p (q))
return;
/* Selectively unlink the sequence. */
if (q != PREV_INSN (BB_HEAD (c)))