commit eb8efc902dd6008d22601d192ff63ea99d6eff1d
author Yi Kong <yikong@google.com> Thu Dec 09 18:06:29 2021 +0800
committer Yi Kong <yikong@google.com> Tue Dec 21 16:09:23 2021 +0800
tree 8b2c545395385b565b316892f7d9dc84f1e11d72
parent 55f84a74c5b824f9ff5e5b320fc8fc598f25f46d

Introduce afdo

A new configuration rule for sampling PGO. This differs from the
original pgo.go rule in the following ways:
 * Automatic propagation to static dependencies
 * Simpler configuration (just put `afdo: true` to optimsation targets)

http://go/android-afdo

Test: build
Bug: 79161490
Change-Id: Ie194824cd523bca19e10ced41d2078fc598f13b3

cc/cc.go

diff --git a/cc/cc.go b/cc/cc.go
index 22baf30..5f63615 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -64,6 +64,9 @@
 
 		ctx.BottomUp("coverage", coverageMutator).Parallel()
 
+		ctx.TopDown("afdo_deps", afdoDepsMutator)
+		ctx.BottomUp("afdo", afdoMutator).Parallel()
+
 		ctx.TopDown("lto_deps", ltoDepsMutator)
 		ctx.BottomUp("lto", ltoMutator).Parallel()
 
@@ -810,6 +813,7 @@
 	sabi     *sabi
 	vndkdep  *vndkdep
 	lto      *lto
+	afdo     *afdo
 	pgo      *pgo
 
 	library libraryInterface
@@ -1143,6 +1147,9 @@
 	if c.lto != nil {
 		c.AddProperties(c.lto.props()...)
 	}
+	if c.afdo != nil {
+		c.AddProperties(c.afdo.props()...)
+	}
 	if c.pgo != nil {
 		c.AddProperties(c.pgo.props()...)
 	}
@@ -1620,6 +1627,7 @@
 	module.sabi = &sabi{}
 	module.vndkdep = &vndkdep{}
 	module.lto = &lto{}
+	module.afdo = &afdo{}
 	module.pgo = &pgo{}
 	return module
 }
@@ -1815,6 +1823,9 @@
 	if c.lto != nil {
 		flags = c.lto.flags(ctx, flags)
 	}
+	if c.afdo != nil {
+		flags = c.afdo.flags(ctx, flags)
+	}
 	if c.pgo != nil {
 		flags = c.pgo.flags(ctx, flags)
 	}
@@ -1942,6 +1953,9 @@
 	if c.lto != nil {
 		c.lto.begin(ctx)
 	}
+	if c.afdo != nil {
+		c.afdo.begin(ctx)
+	}
 	if c.pgo != nil {
 		c.pgo.begin(ctx)
 	}
@@ -3534,6 +3548,7 @@
 		&SAbiProperties{},
 		&VndkProperties{},
 		&LTOProperties{},
+		&AfdoProperties{},
 		&PgoProperties{},
 		&android.ProtoProperties{},
 		// RustBindgenProperties is included here so that cc_defaults can be used for rust_bindgen modules.