Em Mon, Jun 19, 2017 at 02:35:29PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Mon, Jun 19, 2017 at 10:55:58AM +0800, Jin Yao escreveu: > > Marker always there, not just when we have the cursor on top of one of > those lines remains to be coded. > > But you state: > > ------------ > Macro fusion merges two instructions to a single micro-op. Intel core > platform performs this hardware optimization under limited > circumstances. > ------------ > > "Intel core", what about older arches, etc, don't you have to look at: > > # cpudesc : Intel(R) Core(TM) i7-5600U CPU @ 2.60GHz > # cpuid : GenuineIntel,6,61,4 > > present in the perf.data header (or in the running system, for things > like 'perf top') to make sure that this is a machine where such "macro > fusion" takes place?
Ok, I have the patches that need this discussion to get to a conclusion on a separate patch, tmp.perf/annotate, the first patch, the one that returns the 'struct arch' for the browser to use arch specific stuff is in perf/core and can go to Ingo now. - Arnaldo
