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[Bug tree-optimization/20188] [4.0 Regression] asm and memory operands does not add a V_MAY_DEF
- 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: 25 Feb 2005 03:30:05 -0000
- Subject: [Bug tree-optimization/20188] [4.0 Regression] asm and memory operands does not add a V_MAY_DEF
- References: <20050224132918.20188.pluto@pld-linux.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-02-25 03:30 -------
(In reply to comment #9)
> But I should note that this seems to violate aliasing rules but that should not matter for -fno-strict-
> aliasing. Someone should tell glibc if this turns out being violating aliasing rules because it shows up
> for memcpy.
Well in this case we are not violating aliasing rules because we can access via char just fine.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20188