| Message ID | F9073DC4-1F6C-473B-83DA-6D012AB6F08B@comcast.net |
|---|---|
| State | New |
| Headers | show |
On Mon, 26 Jan 2015, Mike Stump wrote: > +@item #pragma GCC unroll @var{"n"} > +@cindex pragma GCC unroll @var{"n"} @var contains the name of a metasyntactic variable; it doesn't make sense for quotes to be included in that name. And as far as I can tell, the quotes aren't part of the syntax either. That is, you should just have @var{n} there, and state explicitly in the text what @var{n} is (an assignment-expression that evaluates to an integer constant, it looks like).
On Jan 29, 2015, at 3:06 PM, Joseph Myers <joseph@codesourcery.com> wrote: > On Mon, 26 Jan 2015, Mike Stump wrote: > >> +@item #pragma GCC unroll @var{"n"} >> +@cindex pragma GCC unroll @var{"n"} > > @var contains the name of a metasyntactic variable; it doesn't make sense > for quotes to be included in that name. And as far as I can tell, the > quotes aren't part of the syntax either. That is, you should just have > @var{n} there, and state explicitly in the text what @var{n} is (an > assignment-expression that evaluates to an integer constant, it looks > like). Fixed.
Index: extend.texi =================================================================== --- extend.texi (revision 220084) +++ extend.texi (working copy) @@ -17881,6 +17881,17 @@ void ignore_vec_dep (int *a, int k, int @} @end smallexample +@table @code +@item #pragma GCC unroll @var{"n"} +@cindex pragma GCC unroll @var{"n"} + +With this pragma, the programmer informs the optimizer how many times +a loop should be unrolled. A 0 or 1 informs the compiler to not +perform any loop unrolling. The pragma must be immediately before +@samp{#pragma ivdep} or a @code{for}, @code{while} or @code{do} loop +and applies only to the loop that follows. + +@end table @node Unnamed Fields @section Unnamed struct/union fields within structs/unions