Re: [PATCH][i386] Implement ix86_emit_swdivsf more efficiently

2011-03-17 Thread Michael Matz
Hi, On Mon, 14 Mar 2011, Richard Guenther wrote: > This rewrites the iteration step of swdivsf to be more register > efficient (two registers instead of four, no load of a FP constant). > This matches how ICC emits the rcp sequence and causes no overall loss > of precision (Micha might still r

Re: [PATCH][i386] Implement ix86_emit_swdivsf more efficiently

2011-03-14 Thread Uros Bizjak
Hello! > This rewrites the iteration step of swdivsf to be more register > efficient (two registers instead of four, no load of a FP constant). > This matches how ICC emits the rcp sequence and causes no overall loss > of precision (Micha might still remember the exact details). The patch is > fa