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Re: [PATCH]: Pointer no escape attribute
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: Daniel Berlin <dberlin at dberlin dot org>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 10 May 2005 16:01:14 +0000 (UTC)
- Subject: Re: [PATCH]: Pointer no escape attribute
- References: <1115737963.32394.100.camel@linux-009002219157>
On Tue, 10 May 2005, Daniel Berlin wrote:
> The first is the addition of the pointer no escape attribute, which is
> used on functions to inform the optimizers that a pointer won't escape
> the function we pass it to.
If this is meant to be user-visible then it needs documentation and
testcases. If not, it should have a name which is not a valid C
identifier, as with the "no vops" attribute, so it cannot be specified in
Diagnostics should now use %qE with an identifier in preference to %qs
I don't see the relation of the c-typeck.c change to the new attribute.
It needs its own testcase and justification.
In principle it seems to me this attribute should apply to function types
rather than to function declarations. Why is it being implemented as a
decl attribute? (If it is purely for built-in function then that would be
Joseph S. Myers http://www.srcf.ucam.org/~jsm28/gcc/
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