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Add comment for afdo flag

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Change-Id: If80df0ac0527784b13158325589c29587db8d5f9
Test: N/A
This commit is contained in:
Vinh Tran 2023-06-27 14:03:25 +00:00
parent 222995b2c1
commit 056effb8b1
1 changed files with 3 additions and 2 deletions
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5
cc/afdo.go
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@ -34,7 +34,8 @@ var (
var afdoProfileProjectsConfigKey = android.NewOnceKey("AfdoProfileProjects")
const afdoCFlagsFormat = "-fprofile-sample-use=%s"
// This flag needs to be in both CFlags and LdFlags to ensure correct symbol ordering
const afdoFlagsFormat = "-fprofile-sample-use=%s"
func recordMissingAfdoProfileFile(ctx android.BaseModuleContext, missing string) {
getNamedMapForConfig(ctx.Config(), modulesMissingProfileFileKey).Store(missing, true)
@ -86,7 +87,7 @@ func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
}
if path := afdo.Properties.FdoProfilePath; path != nil {
// The flags are prepended to allow overriding.
profileUseFlag := fmt.Sprintf(afdoCFlagsFormat, *path)
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...)