Perf triage, 2020-07-14.

(Actually remember to add the new file this time.)

Author: nnethercote

triage/2020-07-14.md

@@ -0,0 +1,16 @@
+# 2020-07-14 Triage Log
+
+See the [README](README.md) for details on how this log was gathered.
+
+Triage done by njn. Revision range: [0c03aee8b81185d65b5821518661c30ecdb42de5..9d09331e00b02f81c714b0c41ce3a38380dd36a2](https://perf.rust-lang.org/?start=0c03aee8b81185d65b5821518661c30ecdb42de5&end=9d09331e00b02f81c714b0c41ce3a38380dd36a2&absolute=false&stat=instructions%3Au).
+
+12 revisions checked. Zero regressions, one improvement.
+
+Regressions
+- None!
+
+Improvements
+- [Shrink ParamEnv to 16 bytes #73978](https://github.com/rust-lang/rust/pull/73978#issuecomment-657877594)
+  ([instructions](https://perf.rust-lang.org/compare.html?start=0c03aee8b81185d65b5821518661c30ecdb42de5&end=8981dbbc36f1575b0a417b6849767bde29e7c6b4&stat=instructions:u)):
+  Up to 1.8% wins on a few benchmarks.
+