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Add additional flag required for Flow Sensitive AFDO

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It can be removed in the future once it becomes default.

Test: presubmit
Bug: 304282732
Change-Id: Ia7729593eff13ba5cc69fdb54519305295313b4d
This commit is contained in:
Yi Kong
2023-10-16 16:57:53 +09:00
parent f613da45db
commit bc2d02aa6a
1 changed files with 3 additions and 0 deletions
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3
cc/afdo.go
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@@ -84,7 +84,10 @@ func (afdo *afdo) flags(ctx ModuleContext, flags Flags) Flags {
// 3. Make the profile searchable by the build system. So it's used the next time the binary
// is built.
flags.Local.CFlags = append([]string{"-funique-internal-linkage-names"}, flags.Local.CFlags...)
// Flags for Flow Sensitive AutoFDO
flags.Local.CFlags = append([]string{"-mllvm", "-enable-fs-discriminator=true"}, flags.Local.CFlags...)
// 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 {
// The flags are prepended to allow overriding.