[Bug tree-optimization/19831] Missing DSE/malloc/free optimization

[dberlin at dberlin dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2005-02-09 03:42 -------
Subject: Re:  New: Missing DSE/malloc/free
	optimization

> void *malloc(__SIZE_TYPE__);
> void free(void*);
> int f(void)
> {
>   char *i = malloc(1);
>   *i = 1;
>   free (i);
> }
> 
> This is something which is useful when we want to much higer level optimizations.

This would require an attribute free, which is on the tree-profiling
branch

Otherwise, you wouldn't know that free is really "free"



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19831