This is what I done. It works well. Thanks to everybody.
2010/11/8 Michael Meissner <meiss...@linux.vnet.ibm.com>: > On Mon, Nov 01, 2010 at 04:52:28PM +0200, roy rosen wrote: >> Hi All, >> >> Is it possible to define UNITS_PER_SIMD_WORD as a global variable and >> to set this varibale using a pragma (even once for a compilation) and >> that way to be able to compile one file with UNITS_PER_SIMD_WORD = 8 >> and another file with UNITS_PER_SIMD_WORD = 16? > > The general way to do this would be to have an appropriate -m option to > control > this. Typically it is based on the instructions available to the back end. > > If you have an -m option, you could presumably define target attributes or > pragmas to change this for particular functions. At the moment, the i386 port > is the only one to support target attributes/pragmas, though I have just > submitted patches for the rs6000 port to add them there, so you can see what > types of changes are needed (note, I need to do another patch after the first > is approved for builtin functions). > > -- > Michael Meissner, IBM > 5 Technology Place Drive, M/S 2757, Westford, MA 01886-3141, USA > meiss...@linux.vnet.ibm.com >
