Revert "Switch to clang-4639204."

This reverts commit d4bc5562.

Reason for revert: PGO + LTO is broken with the new toolchain.

Change-Id: I5b84d933746a8facd536167c2b040fb08302790b

parent d4bc5562

cc/config/global.go

+1 −1

Original line number	Diff line number	Diff line
		@@ -116,7 +116,7 @@ var (

		// prebuilts/clang default settings.
		ClangDefaultBase = "prebuilts/clang/host"
		ClangDefaultVersion = "clang-4639204"
		ClangDefaultVersion = "clang-4630689"
		ClangDefaultShortVersion = "6.0.1"

		// Directories with warnings from Android.bp files.