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Revert "Remove fdoProfileMutator"

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Revert submission 2925209

Reason for revert: b/323975183

Reverted changes: /q/submissionid:2925209

Change-Id: I33b2e71ba7b36e12e5c491e0ad14a7f7df3edd78
This commit is contained in:
Ke-Yu Lu
2024-02-06 02:15:03 +00:00
committed by Gerrit Code Review
parent 943aa5c862
commit 351d36490d
3 changed files with 93 additions and 37 deletions
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102
cc/afdo.go
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@@ -21,6 +21,7 @@ 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
@@ -31,7 +32,7 @@ type AfdoProperties struct {
// automatic feedback-directed optimization using profile data.
Afdo bool
AfdoDep bool `blueprint:"mutated"`
FdoProfilePath *string `blueprint:"mutated"`
}
type afdo struct {
@@ -56,7 +57,7 @@ func (afdo *afdo) afdoEnabled() bool {
}
func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
if afdo.Properties.Afdo || afdo.Properties.AfdoDep {
if afdo.Properties.Afdo {
// 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
@@ -74,39 +75,61 @@ 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...)
}
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()
if path := afdo.Properties.FdoProfilePath; path != nil {
// The flags are prepended to allow overriding.
profileUseFlag := fmt.Sprintf(afdoFlagsFormat, *path)
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...)
// The flags are prepended to allow overriding.
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, fdoProfilePath)
flags.CFlagsDeps = append(flags.CFlagsDeps, pathForSrc)
flags.LdFlagsDeps = append(flags.LdFlagsDeps, pathForSrc)
}
// Update CFlagsDeps and LdFlagsDeps so the module is rebuilt
// if profileFile gets updated
pathForSrc := android.PathForSource(ctx, *path)
flags.CFlagsDeps = append(flags.CFlagsDeps, pathForSrc)
flags.LdFlagsDeps = append(flags.LdFlagsDeps, pathForSrc)
}
return flags
}
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)
// 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
}
if c, ok := ctx.Module().(*Module); ok && c.Enabled() {
if fdoProfileName, err := ctx.DeviceConfig().AfdoProfile(ctx.ModuleName()); 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 {
c.afdo.Properties.FdoProfilePath = proptools.StringPtr(info.Path.String())
}
}
}
}
}
var _ FdoProfileMutatorInterface = (*Module)(nil)
func afdoPropagateViaDepTag(tag blueprint.DependencyTag) bool {
libTag, isLibTag := tag.(libraryDependencyTag)
// Do not recurse down non-static dependencies
@@ -149,16 +172,27 @@ func (a *afdoTransitionMutator) IncomingTransition(ctx android.IncomingTransitio
}
func (a *afdoTransitionMutator) Mutate(ctx android.BottomUpMutatorContext, variation string) {
if variation == "" {
return
}
if m, ok := ctx.Module().(*Module); ok && m.afdo != nil {
if variation == "" {
if m.afdo.afdoEnabled() && !(m.static() && !m.staticBinary()) && !m.Host() {
m.afdo.addDep(ctx, ctx.ModuleName())
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())
}
}
} else {
m.Properties.PreventInstall = true
m.Properties.HideFromMake = true
m.afdo.Properties.AfdoDep = true
m.afdo.addDep(ctx, decodeTarget(variation))
}
}
}