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[Bug tree-optimization/21712] missed optimization due with const function and pulling out of loops
- 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: 22 May 2005 21:34:41 -0000
- Subject: [Bug tree-optimization/21712] missed optimization due with const function and pulling out of loops
- References: <20050522191803.21712.TazForEver@dlfp.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-22 21:34 -------
Then if you say it is expensive, why do we move the divide above the loop:
#define CONST __attribute__((const))
int get_type1(void) CONST;
int get_type2(void) CONST;
void* cast(void*, int) CONST;
void do_something(void*);
void baz(void* p)
{
while(1)
{
do_something(cast(p, get_type1()));
do_something(cast(p, ((int)p)/4));
}
}
--
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21712