Em Wed, Jun 14, 2017 at 10:53:39AM +0800, Jin Yao escreveu: > Macro fusion merges two instructions to a single micro-op. Intel > core platform performs this hardware optimization under limited > circumstances. For example, CMP + JCC can be "fused" and executed > /retired together. While with sampling this can result in the > sample sometimes being on the JCC and sometimes on the CMP. > So for the fused instruction pair, they could be considered > together. > > In general, the fused instruction pairs are: > > cmp/test/add/sub/and/inc/dec + jcc. > > This patch series marks the case clearly by joining the fused > instruction pair in the arrow of the jump. > > For example: > > │ ┌──cmpl $0x0,argp_program_version_hook > 81.93 │ │──je 20 > │ │ lock cmpxchg %esi,0x38a9a4(%rip) > │ │↓ jne 29 > │ │↓ jmp 43 > 11.47 │20:└─→cmpxch %esi,0x38a999(%rip)
Try to have these example outputs in the changesets, not just in the patch series header. - Arnaldo > Jin Yao (2): > perf report: Check for fused instruction pair > perf report: Implement visual marker for macro fusion in annotate > > tools/perf/arch/x86/util/Build | 1 + > tools/perf/arch/x86/util/fused.c | 20 ++++++++++++++++++++ > tools/perf/ui/browser.c | 27 +++++++++++++++++++++++++++ > tools/perf/ui/browser.h | 2 ++ > tools/perf/ui/browsers/annotate.c | 30 ++++++++++++++++++++++++++++++ > tools/perf/util/Build | 1 + > tools/perf/util/annotate.c | 5 +++++ > tools/perf/util/annotate.h | 1 + > tools/perf/util/fused.c | 11 +++++++++++ > tools/perf/util/fused.h | 8 ++++++++ > 10 files changed, 106 insertions(+) > create mode 100644 tools/perf/arch/x86/util/fused.c > create mode 100644 tools/perf/util/fused.c > create mode 100644 tools/perf/util/fused.h > > -- > 2.7.4
