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[Bug optimization/12215] [3.3 regression] ICE in make_label_edge with -fnon-call-exceptions -fno-gcse -O2
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 6 Oct 2003 07:20:33 -0000
- Subject: [Bug optimization/12215] [3.3 regression] ICE in make_label_edge with -fnon-call-exceptions -fno-gcse -O2
- References: <20030908201220.12215.nick@ilm.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12215
------- Additional Comments From ebotcazou at gcc dot gnu dot org 2003-10-06 07:20 -------
No, because I think we are guaranteed that the control flow can't enter block(N)
without falling through from block(I) by cse_set_around_loop, because we are
guaranteed there is no label between them:
/* Look for an insn in front of LOOP_START that sets
something in the desired mode to SET_SRC (x) before we hit
a label or CALL_INSN. */
for (p = prev_nonnote_insn (loop_start);
p && GET_CODE (p) != CALL_INSN
&& GET_CODE (p) != CODE_LABEL;
p = prev_nonnote_insn (p))
[sorry, I should have mentioned it in my first message].