[Mesa-dev] [PATCH] radv-report: Show biggest improvements

[Timothy Arceri]

Being able to see improvements as well as regressions is useful
during the development of shader opts.

Ported from commit 8f0c7aca8683 in shader-db
---
 radv-report.py | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/radv-report.py b/radv-report.py
index 6396db0..027c1aa 100755
--- a/radv-report.py
+++ b/radv-report.py
@@ -675,6 +675,36 @@ def print_tables(before_all_results, after_all_results):
         if num > 0:
             print
 
+    # biggest improvements
+    metrics = si_stats().metrics
+    for i in range(len(metrics)):
+        field = metrics[i][0]
+        num = 0
+        more_is_better = metrics[i][0] == 'maxwaves'
+
+        if more_is_better:
+            sort_key = lambda v: -v[1].diff.__dict__[field]
+        else:
+            sort_key = lambda v: v[1].diff.__dict__[field]
+
+        for name, stats in sorted(shaders.items(), key = sort_key):
+            if more_is_better:
+                if stats.diff.__dict__[field] <= 0:
+                    continue
+            else:
+                if stats.diff.__dict__[field] >= 0:
+                    continue
+
+            if num == 0:
+                print_yellow(" BIGGEST IMPROVEMENTS - {:49}".format(metrics[i][1]))
+                print_yellow(" Before After     Delta Percentage")
+            stats.print_regression(name, field)
+            num += 1
+            if num == num_listed:
+                break
+        if num > 0:
+            print
+
     # percentages
     legend = "Shaders     SGPRs     VGPRs SpillSGPR SpillVGPR  PrivVGPR   Scratch  CodeSize  MaxWaves     Waits"
     print_yellow(" PERCENTAGE DELTAS    " + legend)
-- 
2.19.1