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re PR rtl-optimization/83213 (peephole bug with -O2)

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PR rtl-optimization/83213
	* recog.c (peep2_attempt): Copy over CROSSING_JUMP_P from peepinsn
	to last if both are JUMP_INSNs.

From-SVN: r256728
This commit is contained in:
Jakub Jelinek 2018-01-16 09:54:03 +01:00 committed by Jakub Jelinek
parent be52ac73d1
commit 6ce065b607
2 changed files with 6 additions and 0 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2018-01-16 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/83213
* recog.c (peep2_attempt): Copy over CROSSING_JUMP_P from peepinsn
to last if both are JUMP_INSNs.
PR tree-optimization/83843
* gimple-ssa-store-merging.c
(imm_store_chain_info::output_merged_store): Handle bit_not_p on

2
gcc/recog.c
View File

@ -3446,6 +3446,8 @@ peep2_attempt (basic_block bb, rtx_insn *insn, int match_len, rtx_insn *attempt)
last = emit_insn_after_setloc (attempt,
peep2_insn_data[i].insn,
INSN_LOCATION (peepinsn));
if (JUMP_P (peepinsn) && JUMP_P (last))
CROSSING_JUMP_P (last) = CROSSING_JUMP_P (peepinsn);
before_try = PREV_INSN (insn);
delete_insn_chain (insn, peep2_insn_data[i].insn, false);