cc/pgo.go - SHIFTPHONES/android_build_soong - Gitiles

 // Copyright 2017 Google Inc. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 package cc

 import (
 	"fmt"
 	"path/filepath"
 	"strings"

 	"github.com/google/blueprint/proptools"

 	"android/soong/android"
 	"android/soong/cc/config"
 )

 var (
 	// Add flags to ignore warnings that profiles are old or missing for
 	// some functions.
 	profileUseOtherFlags = []string{
 		"-Wno-backend-plugin",
 	}

 	globalPgoProfileProjects = []string{
 		"toolchain/pgo-profiles",
 		"vendor/google_data/pgo_profile",
 	}
 )

 var pgoProfileProjectsConfigKey = android.NewOnceKey("PgoProfileProjects")

 const profileInstrumentFlag = "-fprofile-generate=/data/local/tmp"
 const profileUseInstrumentFormat = "-fprofile-use=%s"
 const profileUseSamplingFormat = "-fprofile-sample-accurate -fprofile-sample-use=%s"

 func getPgoProfileProjects(config android.DeviceConfig) []string {
 	return config.OnceStringSlice(pgoProfileProjectsConfigKey, func() []string {
 		return append(globalPgoProfileProjects, config.PgoAdditionalProfileDirs()...)
 	})
 }

 func recordMissingProfileFile(ctx BaseModuleContext, missing string) {
 	getNamedMapForConfig(ctx.Config(), modulesMissingProfileFileKey).Store(missing, true)
 }

 type PgoProperties struct {
 	Pgo struct {
 		Instrumentation    *bool
 		Sampling           *bool
 		Profile_file       *string `android:"arch_variant"`
 		Benchmarks         []string
 		Enable_profile_use *bool `android:"arch_variant"`
 		// Additional compiler flags to use when building this module
 		// for profiling (either instrumentation or sampling).
 		Cflags []string `android:"arch_variant"`
 	} `android:"arch_variant"`

 	PgoPresent          bool `blueprint:"mutated"`
 	ShouldProfileModule bool `blueprint:"mutated"`
 	PgoCompile          bool `blueprint:"mutated"`
 	PgoInstrLink        bool `blueprint:"mutated"`
 }

 type pgo struct {
 	Properties PgoProperties
 }

 func (props *PgoProperties) isInstrumentation() bool {
 	return props.Pgo.Instrumentation != nil && *props.Pgo.Instrumentation == true
 }

 func (props *PgoProperties) isSampling() bool {
 	return props.Pgo.Sampling != nil && *props.Pgo.Sampling == true
 }

 func (pgo *pgo) props() []interface{} {
 	return []interface{}{&pgo.Properties}
 }

 func (props *PgoProperties) addInstrumentationProfileGatherFlags(ctx ModuleContext, flags Flags) Flags {
 	// Add to C flags iff PGO is explicitly enabled for this module.
 	if props.ShouldProfileModule {
 		flags.Local.CFlags = append(flags.Local.CFlags, props.Pgo.Cflags...)
 		flags.Local.CFlags = append(flags.Local.CFlags, profileInstrumentFlag)
 	}
 	flags.Local.LdFlags = append(flags.Local.LdFlags, profileInstrumentFlag)
 	return flags
 }
 func (props *PgoProperties) addSamplingProfileGatherFlags(ctx ModuleContext, flags Flags) Flags {
 	flags.Local.CFlags = append(flags.Local.CFlags, props.Pgo.Cflags...)
 	return flags
 }

 func (props *PgoProperties) getPgoProfileFile(ctx BaseModuleContext) android.OptionalPath {
 	profileFile := *props.Pgo.Profile_file

 	// Test if the profile_file is present in any of the PGO profile projects
 	for _, profileProject := range getPgoProfileProjects(ctx.DeviceConfig()) {
 		// Bug: http://b/74395273 If the profile_file is unavailable,
 		// use a versioned file named
 		// <profile_file>.<arbitrary-version> when available.  This
 		// works around an issue where ccache serves stale cache
 		// entries when the profile file has changed.
 		globPattern := filepath.Join(profileProject, profileFile+".*")
 		versionedProfiles, err := ctx.GlobWithDeps(globPattern, nil)
 		if err != nil {
 			ctx.ModuleErrorf("glob: %s", err.Error())
 		}

 		path := android.ExistentPathForSource(ctx, profileProject, profileFile)
 		if path.Valid() {
 			if len(versionedProfiles) != 0 {
 				ctx.PropertyErrorf("pgo.profile_file", "Profile_file has multiple versions: "+filepath.Join(profileProject, profileFile)+", "+strings.Join(versionedProfiles, ", "))
 			}
 			return path
 		}

 		if len(versionedProfiles) > 1 {
 			ctx.PropertyErrorf("pgo.profile_file", "Profile_file has multiple versions: "+strings.Join(versionedProfiles, ", "))
 		} else if len(versionedProfiles) == 1 {
 			return android.OptionalPathForPath(android.PathForSource(ctx, versionedProfiles[0]))
 		}
 	}

 	// Record that this module's profile file is absent
 	missing := *props.Pgo.Profile_file + ":" + ctx.ModuleDir() + "/Android.bp:" + ctx.ModuleName()
 	recordMissingProfileFile(ctx, missing)

 	return android.OptionalPathForPath(nil)
 }

 func (props *PgoProperties) profileUseFlag(ctx ModuleContext, file string) string {
 	if props.isInstrumentation() {
 		return fmt.Sprintf(profileUseInstrumentFormat, file)
 	}
 	if props.isSampling() {
 		return fmt.Sprintf(profileUseSamplingFormat, file)
 	}
 	return ""
 }

 func (props *PgoProperties) profileUseFlags(ctx ModuleContext, file string) []string {
 	flags := []string{props.profileUseFlag(ctx, file)}
 	flags = append(flags, profileUseOtherFlags...)
 	return flags
 }

 func (props *PgoProperties) addProfileUseFlags(ctx ModuleContext, flags Flags) Flags {
 	// Return if 'pgo' property is not present in this module.
 	if !props.PgoPresent {
 		return flags
 	}

 	if props.PgoCompile {
 		profileFile := props.getPgoProfileFile(ctx)
 		profileFilePath := profileFile.Path()
 		profileUseFlags := props.profileUseFlags(ctx, profileFilePath.String())

 		flags.Local.CFlags = append(flags.Local.CFlags, profileUseFlags...)
 		flags.Local.LdFlags = append(flags.Local.LdFlags, profileUseFlags...)

 		// Update CFlagsDeps and LdFlagsDeps so the module is rebuilt
 		// if profileFile gets updated
 		flags.CFlagsDeps = append(flags.CFlagsDeps, profileFilePath)
 		flags.LdFlagsDeps = append(flags.LdFlagsDeps, profileFilePath)

 		if props.isSampling() {
 			flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-mllvm,-no-warn-sample-unused=true")
 		}
 	}
 	return flags
 }

 func (props *PgoProperties) isPGO(ctx BaseModuleContext) bool {
 	isInstrumentation := props.isInstrumentation()
 	isSampling := props.isSampling()

 	profileKindPresent := isInstrumentation || isSampling
 	filePresent := props.Pgo.Profile_file != nil
 	benchmarksPresent := len(props.Pgo.Benchmarks) > 0

 	// If all three properties are absent, PGO is OFF for this module
 	if !profileKindPresent && !filePresent && !benchmarksPresent {
 		return false
 	}

 	// profileKindPresent and filePresent are mandatory properties.
 	if !profileKindPresent || !filePresent {
 		var missing []string
 		if !profileKindPresent {
 			missing = append(missing, "profile kind (either \"instrumentation\" or \"sampling\" property)")
 		}
 		if !filePresent {
 			missing = append(missing, "profile_file property")
 		}
 		missingProps := strings.Join(missing, ", ")
 		ctx.ModuleErrorf("PGO specification is missing properties: " + missingProps)
 	}

 	// Benchmark property is mandatory for instrumentation PGO.
 	if isInstrumentation && !benchmarksPresent {
 		ctx.ModuleErrorf("Instrumentation PGO specification is missing benchmark property")
 	}

 	if isSampling && isInstrumentation {
 		ctx.PropertyErrorf("pgo", "Exactly one of \"instrumentation\" and \"sampling\" properties must be set")
 	}

 	return true
 }

 func (pgo *pgo) begin(ctx BaseModuleContext) {
 	// TODO Evaluate if we need to support PGO for host modules
 	if ctx.Host() {
 		return
 	}

 	// Check if PGO is needed for this module
 	pgo.Properties.PgoPresent = pgo.Properties.isPGO(ctx)

 	if !pgo.Properties.PgoPresent {
 		return
 	}

 	// This module should be instrumented if ANDROID_PGO_INSTRUMENT is set
 	// and includes 'all', 'ALL' or a benchmark listed for this module.
 	//
 	// TODO Validate that each benchmark instruments at least one module
 	pgo.Properties.ShouldProfileModule = false
 	pgoBenchmarks := ctx.Config().Getenv("ANDROID_PGO_INSTRUMENT")
 	pgoBenchmarksMap := make(map[string]bool)
 	for _, b := range strings.Split(pgoBenchmarks, ",") {
 		pgoBenchmarksMap[b] = true
 	}

 	if pgoBenchmarksMap["all"] == true || pgoBenchmarksMap["ALL"] == true {
 		pgo.Properties.ShouldProfileModule = true
 		pgo.Properties.PgoInstrLink = pgo.Properties.isInstrumentation()
 	} else {
 		for _, b := range pgo.Properties.Pgo.Benchmarks {
 			if pgoBenchmarksMap[b] == true {
 				pgo.Properties.ShouldProfileModule = true
 				pgo.Properties.PgoInstrLink = pgo.Properties.isInstrumentation()
 				break
 			}
 		}
 	}

 	// PGO profile use is not feasible for a Clang coverage build because
 	// -fprofile-use and -fprofile-instr-generate are incompatible.
 	if ctx.DeviceConfig().ClangCoverageEnabled() {
 		return
 	}

 	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") &&
 		proptools.BoolDefault(pgo.Properties.Pgo.Enable_profile_use, true) {
 		if profileFile := pgo.Properties.getPgoProfileFile(ctx); profileFile.Valid() {
 			pgo.Properties.PgoCompile = true
 		}
 	}
 }

 func (pgo *pgo) deps(ctx BaseModuleContext, deps Deps) Deps {
 	if pgo.Properties.ShouldProfileModule {
 		runtimeLibrary := config.ProfileRuntimeLibrary(ctx.toolchain())
 		deps.LateStaticLibs = append(deps.LateStaticLibs, runtimeLibrary)
 	}
 	return deps
 }

 func (pgo *pgo) flags(ctx ModuleContext, flags Flags) Flags {
 	if ctx.Host() {
 		return flags
 	}

 	// Deduce PgoInstrLink property i.e. whether this module needs to be
 	// linked with profile-generation flags.  Here, we're setting it if any
 	// dependency needs PGO instrumentation.  It is initially set in
 	// begin() if PGO is directly enabled for this module.
 	if ctx.static() && !ctx.staticBinary() {
 		// For static libraries, check if any whole_static_libs are
 		// linked with profile generation
 		ctx.VisitDirectDeps(func(m android.Module) {
 			if depTag, ok := ctx.OtherModuleDependencyTag(m).(libraryDependencyTag); ok {
 				if depTag.static() && depTag.wholeStatic {
 					if cc, ok := m.(*Module); ok {
 						if cc.pgo.Properties.PgoInstrLink {
 							pgo.Properties.PgoInstrLink = true
 						}
 					}
 				}
 			}
 		})
 	} else {
 		// For executables and shared libraries, check all static dependencies.
 		ctx.VisitDirectDeps(func(m android.Module) {
 			if depTag, ok := ctx.OtherModuleDependencyTag(m).(libraryDependencyTag); ok {
 				if depTag.static() {
 					if cc, ok := m.(*Module); ok {
 						if cc.pgo.Properties.PgoInstrLink {
 							pgo.Properties.PgoInstrLink = true
 						}
 					}
 				}
 			}
 		})
 	}

 	props := pgo.Properties
 	// Add flags to profile this module based on its profile_kind
 	if (props.ShouldProfileModule && props.isInstrumentation()) || props.PgoInstrLink {
 		// Instrumentation PGO use and gather flags cannot coexist.
 		return props.addInstrumentationProfileGatherFlags(ctx, flags)
 	} else if props.ShouldProfileModule && props.isSampling() {
 		flags = props.addSamplingProfileGatherFlags(ctx, flags)
 	} else if ctx.DeviceConfig().SamplingPGO() {
 		flags = props.addSamplingProfileGatherFlags(ctx, flags)
 	}

 	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
 		flags = props.addProfileUseFlags(ctx, flags)
 	}

 	return flags
 }
	// Copyright 2017 Google Inc. All rights reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	package cc

	import (
	"fmt"
	"path/filepath"
	"strings"

	"github.com/google/blueprint/proptools"

	"android/soong/android"
	"android/soong/cc/config"
	)

	var (
	// Add flags to ignore warnings that profiles are old or missing for
	// some functions.
	profileUseOtherFlags = []string{
	"-Wno-backend-plugin",
	}

	globalPgoProfileProjects = []string{
	"toolchain/pgo-profiles",
	"vendor/google_data/pgo_profile",
	}
	)

	var pgoProfileProjectsConfigKey = android.NewOnceKey("PgoProfileProjects")

	const profileInstrumentFlag = "-fprofile-generate=/data/local/tmp"
	const profileUseInstrumentFormat = "-fprofile-use=%s"
	const profileUseSamplingFormat = "-fprofile-sample-accurate -fprofile-sample-use=%s"

	func getPgoProfileProjects(config android.DeviceConfig) []string {
	return config.OnceStringSlice(pgoProfileProjectsConfigKey, func() []string {
	return append(globalPgoProfileProjects, config.PgoAdditionalProfileDirs()...)
	})
	}

	func recordMissingProfileFile(ctx BaseModuleContext, missing string) {
	getNamedMapForConfig(ctx.Config(), modulesMissingProfileFileKey).Store(missing, true)
	}

	type PgoProperties struct {
	Pgo struct {
	Instrumentation *bool
	Sampling *bool
	Profile_file *string `android:"arch_variant"`
	Benchmarks []string
	Enable_profile_use *bool `android:"arch_variant"`
	// Additional compiler flags to use when building this module
	// for profiling (either instrumentation or sampling).
	Cflags []string `android:"arch_variant"`
	} `android:"arch_variant"`

	PgoPresent bool `blueprint:"mutated"`
	ShouldProfileModule bool `blueprint:"mutated"`
	PgoCompile bool `blueprint:"mutated"`
	PgoInstrLink bool `blueprint:"mutated"`
	}

	type pgo struct {
	Properties PgoProperties
	}

	func (props *PgoProperties) isInstrumentation() bool {
	return props.Pgo.Instrumentation != nil && *props.Pgo.Instrumentation == true
	}

	func (props *PgoProperties) isSampling() bool {
	return props.Pgo.Sampling != nil && *props.Pgo.Sampling == true
	}

	func (pgo *pgo) props() []interface{} {
	return []interface{}{&pgo.Properties}
	}

	func (props *PgoProperties) addInstrumentationProfileGatherFlags(ctx ModuleContext, flags Flags) Flags {
	// Add to C flags iff PGO is explicitly enabled for this module.
	if props.ShouldProfileModule {
	flags.Local.CFlags = append(flags.Local.CFlags, props.Pgo.Cflags...)
	flags.Local.CFlags = append(flags.Local.CFlags, profileInstrumentFlag)
	}
	flags.Local.LdFlags = append(flags.Local.LdFlags, profileInstrumentFlag)
	return flags
	}
	func (props *PgoProperties) addSamplingProfileGatherFlags(ctx ModuleContext, flags Flags) Flags {
	flags.Local.CFlags = append(flags.Local.CFlags, props.Pgo.Cflags...)
	return flags
	}

	func (props *PgoProperties) getPgoProfileFile(ctx BaseModuleContext) android.OptionalPath {
	profileFile := *props.Pgo.Profile_file

	// Test if the profile_file is present in any of the PGO profile projects
	for _, profileProject := range getPgoProfileProjects(ctx.DeviceConfig()) {
	// Bug: http://b/74395273 If the profile_file is unavailable,
	// use a versioned file named
	// <profile_file>.<arbitrary-version> when available. This
	// works around an issue where ccache serves stale cache
	// entries when the profile file has changed.
	globPattern := filepath.Join(profileProject, profileFile+".*")
	versionedProfiles, err := ctx.GlobWithDeps(globPattern, nil)
	if err != nil {
	ctx.ModuleErrorf("glob: %s", err.Error())
	}

	path := android.ExistentPathForSource(ctx, profileProject, profileFile)
	if path.Valid() {
	if len(versionedProfiles) != 0 {
	ctx.PropertyErrorf("pgo.profile_file", "Profile_file has multiple versions: "+filepath.Join(profileProject, profileFile)+", "+strings.Join(versionedProfiles, ", "))
	}
	return path
	}

	if len(versionedProfiles) > 1 {
	ctx.PropertyErrorf("pgo.profile_file", "Profile_file has multiple versions: "+strings.Join(versionedProfiles, ", "))
	} else if len(versionedProfiles) == 1 {
	return android.OptionalPathForPath(android.PathForSource(ctx, versionedProfiles[0]))
	}
	}

	// Record that this module's profile file is absent
	missing := *props.Pgo.Profile_file + ":" + ctx.ModuleDir() + "/Android.bp:" + ctx.ModuleName()
	recordMissingProfileFile(ctx, missing)

	return android.OptionalPathForPath(nil)
	}

	func (props *PgoProperties) profileUseFlag(ctx ModuleContext, file string) string {
	if props.isInstrumentation() {
	return fmt.Sprintf(profileUseInstrumentFormat, file)
	}
	if props.isSampling() {
	return fmt.Sprintf(profileUseSamplingFormat, file)
	}
	return ""
	}

	func (props *PgoProperties) profileUseFlags(ctx ModuleContext, file string) []string {
	flags := []string{props.profileUseFlag(ctx, file)}
	flags = append(flags, profileUseOtherFlags...)
	return flags
	}

	func (props *PgoProperties) addProfileUseFlags(ctx ModuleContext, flags Flags) Flags {
	// Return if 'pgo' property is not present in this module.
	if !props.PgoPresent {
	return flags
	}

	if props.PgoCompile {
	profileFile := props.getPgoProfileFile(ctx)
	profileFilePath := profileFile.Path()
	profileUseFlags := props.profileUseFlags(ctx, profileFilePath.String())

	flags.Local.CFlags = append(flags.Local.CFlags, profileUseFlags...)
	flags.Local.LdFlags = append(flags.Local.LdFlags, profileUseFlags...)

	// Update CFlagsDeps and LdFlagsDeps so the module is rebuilt
	// if profileFile gets updated
	flags.CFlagsDeps = append(flags.CFlagsDeps, profileFilePath)
	flags.LdFlagsDeps = append(flags.LdFlagsDeps, profileFilePath)

	if props.isSampling() {
	flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-mllvm,-no-warn-sample-unused=true")
	}
	}
	return flags
	}

	func (props *PgoProperties) isPGO(ctx BaseModuleContext) bool {
	isInstrumentation := props.isInstrumentation()
	isSampling := props.isSampling()

	profileKindPresent := isInstrumentation \|\| isSampling
	filePresent := props.Pgo.Profile_file != nil
	benchmarksPresent := len(props.Pgo.Benchmarks) > 0

	// If all three properties are absent, PGO is OFF for this module
	if !profileKindPresent && !filePresent && !benchmarksPresent {
	return false
	}

	// profileKindPresent and filePresent are mandatory properties.
	if !profileKindPresent \|\| !filePresent {
	var missing []string
	if !profileKindPresent {
	missing = append(missing, "profile kind (either \"instrumentation\" or \"sampling\" property)")
	}
	if !filePresent {
	missing = append(missing, "profile_file property")
	}
	missingProps := strings.Join(missing, ", ")
	ctx.ModuleErrorf("PGO specification is missing properties: " + missingProps)
	}

	// Benchmark property is mandatory for instrumentation PGO.
	if isInstrumentation && !benchmarksPresent {
	ctx.ModuleErrorf("Instrumentation PGO specification is missing benchmark property")
	}

	if isSampling && isInstrumentation {
	ctx.PropertyErrorf("pgo", "Exactly one of \"instrumentation\" and \"sampling\" properties must be set")
	}

	return true
	}

	func (pgo *pgo) begin(ctx BaseModuleContext) {
	// TODO Evaluate if we need to support PGO for host modules
	if ctx.Host() {
	return
	}

	// Check if PGO is needed for this module
	pgo.Properties.PgoPresent = pgo.Properties.isPGO(ctx)

	if !pgo.Properties.PgoPresent {
	return
	}

	// This module should be instrumented if ANDROID_PGO_INSTRUMENT is set
	// and includes 'all', 'ALL' or a benchmark listed for this module.
	//
	// TODO Validate that each benchmark instruments at least one module
	pgo.Properties.ShouldProfileModule = false
	pgoBenchmarks := ctx.Config().Getenv("ANDROID_PGO_INSTRUMENT")
	pgoBenchmarksMap := make(map[string]bool)
	for _, b := range strings.Split(pgoBenchmarks, ",") {
	pgoBenchmarksMap[b] = true
	}

	if pgoBenchmarksMap["all"] == true \|\| pgoBenchmarksMap["ALL"] == true {
	pgo.Properties.ShouldProfileModule = true
	pgo.Properties.PgoInstrLink = pgo.Properties.isInstrumentation()
	} else {
	for _, b := range pgo.Properties.Pgo.Benchmarks {
	if pgoBenchmarksMap[b] == true {
	pgo.Properties.ShouldProfileModule = true
	pgo.Properties.PgoInstrLink = pgo.Properties.isInstrumentation()
	break
	}
	}
	}

	// PGO profile use is not feasible for a Clang coverage build because
	// -fprofile-use and -fprofile-instr-generate are incompatible.
	if ctx.DeviceConfig().ClangCoverageEnabled() {
	return
	}

	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") &&
	proptools.BoolDefault(pgo.Properties.Pgo.Enable_profile_use, true) {
	if profileFile := pgo.Properties.getPgoProfileFile(ctx); profileFile.Valid() {
	pgo.Properties.PgoCompile = true
	}
	}
	}

	func (pgo *pgo) deps(ctx BaseModuleContext, deps Deps) Deps {
	if pgo.Properties.ShouldProfileModule {
	runtimeLibrary := config.ProfileRuntimeLibrary(ctx.toolchain())
	deps.LateStaticLibs = append(deps.LateStaticLibs, runtimeLibrary)
	}
	return deps
	}

	func (pgo *pgo) flags(ctx ModuleContext, flags Flags) Flags {
	if ctx.Host() {
	return flags
	}

	// Deduce PgoInstrLink property i.e. whether this module needs to be
	// linked with profile-generation flags. Here, we're setting it if any
	// dependency needs PGO instrumentation. It is initially set in
	// begin() if PGO is directly enabled for this module.
	if ctx.static() && !ctx.staticBinary() {
	// For static libraries, check if any whole_static_libs are
	// linked with profile generation
	ctx.VisitDirectDeps(func(m android.Module) {
	if depTag, ok := ctx.OtherModuleDependencyTag(m).(libraryDependencyTag); ok {
	if depTag.static() && depTag.wholeStatic {
	if cc, ok := m.(*Module); ok {
	if cc.pgo.Properties.PgoInstrLink {
	pgo.Properties.PgoInstrLink = true
	}
	}
	}
	}
	})
	} else {
	// For executables and shared libraries, check all static dependencies.
	ctx.VisitDirectDeps(func(m android.Module) {
	if depTag, ok := ctx.OtherModuleDependencyTag(m).(libraryDependencyTag); ok {
	if depTag.static() {
	if cc, ok := m.(*Module); ok {
	if cc.pgo.Properties.PgoInstrLink {
	pgo.Properties.PgoInstrLink = true
	}
	}
	}
	}
	})
	}

	props := pgo.Properties
	// Add flags to profile this module based on its profile_kind
	if (props.ShouldProfileModule && props.isInstrumentation()) \|\| props.PgoInstrLink {
	// Instrumentation PGO use and gather flags cannot coexist.
	return props.addInstrumentationProfileGatherFlags(ctx, flags)
	} else if props.ShouldProfileModule && props.isSampling() {
	flags = props.addSamplingProfileGatherFlags(ctx, flags)
	} else if ctx.DeviceConfig().SamplingPGO() {
	flags = props.addSamplingProfileGatherFlags(ctx, flags)
	}

	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
	flags = props.addProfileUseFlags(ctx, flags)
	}

	return flags
	}