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[Bug middle-end/37359] [4.4 Regression] IRA miscompiled transfer.o in libgfortran, sejmp
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Sep 2008 00:43:50 -0000
- Subject: [Bug middle-end/37359] [4.4 Regression] IRA miscompiled transfer.o in libgfortran, sejmp
- References: <bug-37359-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from hjl dot tools at gmail dot com 2008-09-04 00:43 -------
regstat_compute_ri has
/* See the setjmp comment in regstat_ri_bb_compute. */
EXECUTE_IF_SET_IN_BITMAP (setjmp_crosses, FIRST_PSEUDO_REGISTER, regno, bi)
{
REG_BASIC_BLOCK (regno) = REG_BLOCK_UNKNOWN;
REG_LIVE_LENGTH (regno) = -1;
}
But IRA never uses REG_LIVE_LENGTH.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37359