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[Bug target/27282] [4.2 regression] ICE in final_scan_insn, at final.c:2448 - could not split insn
- From: "dje at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Apr 2006 16:09:26 -0000
- Subject: [Bug target/27282] [4.2 regression] ICE in final_scan_insn, at final.c:2448 - could not split insn
- References: <bug-27282-12387@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from dje at gcc dot gnu dot org 2006-04-25 16:09 -------
By the way, while Andrew and my patch does produce correct code, it reverts to
the original behavior of the constant propagating into the AND between life2
and lreg, not between life1 and combine. Somehow combine is able to form the
AND with the wrong constant that does not match the pattern but cannot form the
AND with the correct, sign-extended constant.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27282