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Commit 943aa5c8 authored by Colin Cross's avatar Colin Cross
Browse files

Remove fdoProfileMutator

Add the dependency on the fdo_profile module in afdoTransitionMutator
and read the provider in GenerateAndroidBuildActions.

Bug: 319288033
Test: afdo_test.go
Change-Id: Ied8fd7b52d5694a3691652318e87b8fe14dda126
parent a6b407fb
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+35 −69
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ import (
	"android/soong/android"

	"github.com/google/blueprint"
	"github.com/google/blueprint/proptools"
)

// This flag needs to be in both CFlags and LdFlags to ensure correct symbol ordering
@@ -32,7 +31,7 @@ type AfdoProperties struct {
	// automatic feedback-directed optimization using profile data.
	Afdo bool

	FdoProfilePath *string `blueprint:"mutated"`
	AfdoDep bool `blueprint:"mutated"`
}

type afdo struct {
@@ -57,7 +56,7 @@ func (afdo *afdo) afdoEnabled() bool {
}

func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
	if afdo.Properties.Afdo {
	if afdo.Properties.Afdo || afdo.Properties.AfdoDep {
		// We use `-funique-internal-linkage-names` to associate profiles to the right internal
		// functions. This option should be used before generating a profile. Because a profile
		// generated for a binary without unique names doesn't work well building a binary with
@@ -75,60 +74,38 @@ func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
		// TODO(b/266595187): Remove the following feature once it is enabled in LLVM by default.
		flags.Local.CFlags = append([]string{"-mllvm", "-improved-fs-discriminator=true"}, flags.Local.CFlags...)
	}
	if path := afdo.Properties.FdoProfilePath; path != nil {
	fdoProfileDeps := ctx.GetDirectDepsWithTag(FdoProfileTag)
	if len(fdoProfileDeps) > 0 && fdoProfileDeps[0] != nil {
		if info, ok := android.OtherModuleProvider(ctx, fdoProfileDeps[0], FdoProfileProvider); ok {
			fdoProfilePath := info.Path.String()

			// The flags are prepended to allow overriding.
		profileUseFlag := fmt.Sprintf(afdoFlagsFormat, *path)
			profileUseFlag := fmt.Sprintf(afdoFlagsFormat, fdoProfilePath)
			flags.Local.CFlags = append([]string{profileUseFlag}, flags.Local.CFlags...)
			flags.Local.LdFlags = append([]string{profileUseFlag, "-Wl,-mllvm,-no-warn-sample-unused=true"}, flags.Local.LdFlags...)

			// Update CFlagsDeps and LdFlagsDeps so the module is rebuilt
			// if profileFile gets updated
		pathForSrc := android.PathForSource(ctx, *path)
			pathForSrc := android.PathForSource(ctx, fdoProfilePath)
			flags.CFlagsDeps = append(flags.CFlagsDeps, pathForSrc)
			flags.LdFlagsDeps = append(flags.LdFlagsDeps, pathForSrc)
		}

	return flags
}

// FdoProfileMutator reads the FdoProfileProvider from a direct dep with FdoProfileTag
// assigns FdoProfileInfo.Path to the FdoProfilePath mutated property
func (c *Module) fdoProfileMutator(ctx android.BottomUpMutatorContext) {
	if !c.Enabled() {
		return
	}

	if !c.afdo.afdoEnabled() {
		return
	}

	if c.Host() {
		return
	}

	if c.static() && !c.staticBinary() {
		return
	return flags
}

	if c, ok := ctx.Module().(*Module); ok && c.Enabled() {
		if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(ctx.ModuleName()); fdoProfileName != "" && err == nil {
			deps := ctx.AddFarVariationDependencies(
func (a *afdo) addDep(ctx android.BottomUpMutatorContext, fdoProfileTarget string) {
	if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(fdoProfileTarget); fdoProfileName != "" && err == nil {
		ctx.AddFarVariationDependencies(
			[]blueprint.Variation{
				{Mutator: "arch", Variation: ctx.Target().ArchVariation()},
				{Mutator: "os", Variation: "android"},
			},
			FdoProfileTag,
			fdoProfileName)
			if len(deps) > 0 && deps[0] != nil {
				if info, ok := android.OtherModuleProvider(ctx, deps[0], FdoProfileProvider); ok {
					c.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
				}
	}
}
	}
}

var _ FdoProfileMutatorInterface = (*Module)(nil)

func afdoPropagateViaDepTag(tag blueprint.DependencyTag) bool {
	libTag, isLibTag := tag.(libraryDependencyTag)
@@ -172,27 +149,16 @@ func (a *afdoTransitionMutator) IncomingTransition(ctx android.IncomingTransitio
}

func (a *afdoTransitionMutator) Mutate(ctx android.BottomUpMutatorContext, variation string) {
	if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
		if variation == "" {
		return
			if m.afdo.afdoEnabled() && !(m.static() && !m.staticBinary()) && !m.Host() {
				m.afdo.addDep(ctx, ctx.ModuleName())
			}

	if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
		} else {
			m.Properties.PreventInstall = true
			m.Properties.HideFromMake = true
		m.afdo.Properties.Afdo = true
		if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(decodeTarget(variation)); fdoProfileName != "" && err == nil {
			deps := ctx.AddFarVariationDependencies(
				[]blueprint.Variation{
					{Mutator: "arch", Variation: ctx.Target().ArchVariation()},
					{Mutator: "os", Variation: "android"},
				},
				FdoProfileTag,
				fdoProfileName)
			if len(deps) > 0 && deps[0] != nil {
				if info, ok := android.OtherModuleProvider(ctx, deps[0], FdoProfileProvider); ok {
					m.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
				}
			}
			m.afdo.Properties.AfdoDep = true
			m.afdo.addDep(ctx, decodeTarget(variation))
		}
	}
}
+1 −2
Original line number Diff line number Diff line
@@ -55,7 +55,6 @@ func RegisterCCBuildComponents(ctx android.RegistrationContext) {
		ctx.BottomUp("test_per_src", TestPerSrcMutator).Parallel()
		ctx.BottomUp("version", versionMutator).Parallel()
		ctx.BottomUp("begin", BeginMutator).Parallel()
		ctx.BottomUp("fdo_profile", fdoProfileMutator).Parallel()
	})

	ctx.PostDepsMutators(func(ctx android.RegisterMutatorsContext) {
@@ -1382,7 +1381,7 @@ func (c *Module) IsVndk() bool {

func (c *Module) isAfdoCompile() bool {
	if afdo := c.afdo; afdo != nil {
		return afdo.Properties.FdoProfilePath != nil
		return afdo.Properties.Afdo || afdo.Properties.AfdoDep
	}
	return false
}
+2 −23
Original line number Diff line number Diff line
@@ -43,23 +43,10 @@ type FdoProfileInfo struct {
}

// FdoProfileProvider is used to provide path to an fdo profile
var FdoProfileProvider = blueprint.NewMutatorProvider[FdoProfileInfo]("fdo_profile")

// FdoProfileMutatorInterface is the interface implemented by fdo_profile module type
// module types that can depend on an fdo_profile module
type FdoProfileMutatorInterface interface {
	// FdoProfileMutator eithers set or get FdoProfileProvider
	fdoProfileMutator(ctx android.BottomUpMutatorContext)
}

var _ FdoProfileMutatorInterface = (*fdoProfile)(nil)
var FdoProfileProvider = blueprint.NewProvider[FdoProfileInfo]()

// GenerateAndroidBuildActions of fdo_profile does not have any build actions
func (fp *fdoProfile) GenerateAndroidBuildActions(ctx android.ModuleContext) {}

// FdoProfileMutator sets FdoProfileProvider to fdo_profile module
// or sets afdo.Properties.FdoProfilePath to path in FdoProfileProvider of the depended fdo_profile
func (fp *fdoProfile) fdoProfileMutator(ctx android.BottomUpMutatorContext) {
func (fp *fdoProfile) GenerateAndroidBuildActions(ctx android.ModuleContext) {
	if fp.properties.Profile != nil {
		path := android.PathForModuleSrc(ctx, *fp.properties.Profile)
		android.SetProvider(ctx, FdoProfileProvider, FdoProfileInfo{
@@ -68,14 +55,6 @@ func (fp *fdoProfile) fdoProfileMutator(ctx android.BottomUpMutatorContext) {
	}
}

// fdoProfileMutator calls the generic fdoProfileMutator function of fdoProfileMutator
// which is implemented by cc and cc.FdoProfile
func fdoProfileMutator(ctx android.BottomUpMutatorContext) {
	if f, ok := ctx.Module().(FdoProfileMutatorInterface); ok {
		f.fdoProfileMutator(ctx)
	}
}

func FdoProfileFactory() android.Module {
	m := &fdoProfile{}
	m.AddProperties(&m.properties)