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[Bug rtl-optimization/42839] [4.5 Regression] gcc.target/mips/octeon-bbit-2.c failing for -mabi=64
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Feb 2010 22:56:50 -0000
- Subject: [Bug rtl-optimization/42839] [4.5 Regression] gcc.target/mips/octeon-bbit-2.c failing for -mabi=64
- References: <bug-42839-7151@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from pinskia at gcc dot gnu dot org 2010-02-12 22:56 -------
But that is not the cause of the problem here. The issue comes down to we
simplify in 4.5 (subreg (sign_extend (reg N) ) ) into (reg N). fwprop1 is doing
that change on the trunk.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42839