[tree-ssa] dead const/pure/alloca call removal

[Joseph S. Myers]

On Sun, 9 Nov 2003, Andreas Jaeger wrote:

> We do have -fno-builtins and e.g. -fno-builtin-sin and there could be
> also a -fno-builtin-malloc for such cases.  

There already is!  (It will disable the built-in malloc attribute on
malloc, i.e. the assumption that it returns unaliased pointers, but e.g.
glibc headers also explicitly specify this attribute.)  You can also use
-fno-builtin-FUNCTION for a FUNCTION that isn't yet built in, and this
will be silently accepted - as documented.

-- 
Joseph S. Myers
jsm@polyomino.org.uk