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[Bug rtl-optimization/16968] [3.4 Regression] loop optimizer miscompilation
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Aug 2004 10:31:08 -0000
- Subject: [Bug rtl-optimization/16968] [3.4 Regression] loop optimizer miscompilation
- References: <20040810154333.16968.jakub@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From jakub at gcc dot gnu dot org 2004-08-16 10:31 -------
It is miscompiled in 3.4.x, so setting known to work to 3.4.0 and 3.4.1 seems
wrong to me.
GCC 3.5 doesn't miscompile this (it doesn't use asm_input ("") magic),
but the loop bug which is the cause of this problem is most probably there
too (i.e. I think it will happily move asm volatile or asm without output
around while it shouldn't).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16968