PGO for libc++

This improves app launch time by 0.76%. Test: presubmit Bug: 181102883 Bug: 175205560 Change-Id: Ic541e376d3c907c6d896621e5afedba8e1045f88
2021-02-23 20:00:37 +08:00
parent e120486753
commit c74f1b6bac
1 changed files with 9 additions and 0 deletions
--- a/Android.bp
+++ b/Android.bp
@@ -160,7 +160,16 @@ cc_library_shared {
    whole_static_libs: ["libc++_static"],
    stl: "none",

+    pgo: {
+        sampling: true,
+    },
+
    target: {
+        android: {
+            pgo: {
+                profile_file: "libc++/libc++.profdata",
+            },
+        },
        darwin: {
            unexported_symbols_list: "lib/libc++unexp.exp",
            force_symbols_not_weak_list: "lib/notweak.exp",