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Commit bc2d02aa authored by Yi Kong's avatar Yi Kong
Browse files

Add additional flag required for Flow Sensitive AFDO 

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

Test: presubmit
Bug: 304282732
Change-Id: Ia7729593eff13ba5cc69fdb54519305295313b4d
parent f613da45

cc/afdo.go

+3 −0
Original line number Diff line number Diff line
@@ -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.