Merge changes from topic "separate_code"

* changes:
  soong: use -Wl,-z,separate-code w/ -Wl,--execute-only
  Revert "Revert "soong: upgrade Android platform to clang-r370808""

cc/config/clang.go

@@ -132,6 +132,10 @@ func init() {
 		// Disable -Winconsistent-missing-override until we can clean up the existing
 		// codebase for it.
 		"-Wno-inconsistent-missing-override",
+
+		// Warnings from clang-10
+		// Nested and array designated initialization is nice to have.
+		"-Wno-c99-designator",
 	}, " "))
 
 	pctx.StaticVariable("ClangExtraCppflags", strings.Join([]string{
@@ -161,6 +165,10 @@ func init() {
 		// new warnings are fixed.
 		"-Wno-tautological-constant-compare",
 		"-Wno-tautological-type-limit-compare",
+		// http://b/145210666
+		"-Wno-reorder-init-list",
+		// http://b/145211066
+		"-Wno-implicit-int-float-conversion",
 	}, " "))
 
 	// Extra cflags for external third-party projects to disable warnings that
@@ -176,6 +184,13 @@ func init() {
 		// Bug: http://b/29823425 Disable -Wnull-dereference until the
 		// new instances detected by this warning are fixed.
 		"-Wno-null-dereference",
+
+		// http://b/145211477
+		"-Wno-pointer-compare",
+		// http://b/145211022
+		"-Wno-xor-used-as-pow",
+		// http://b/145211022
+		"-Wno-final-dtor-non-final-class",
 	}, " "))
 }
 

cc/config/global.go

@@ -126,8 +126,8 @@ var (
 
 	// prebuilts/clang default settings.
 	ClangDefaultBase         = "prebuilts/clang/host"
-	ClangDefaultVersion      = "clang-r365631b"
-	ClangDefaultShortVersion = "9.0.7"
+	ClangDefaultVersion      = "clang-r370808"
+	ClangDefaultShortVersion = "10.0.1"
 
 	// Directories with warnings from Android.bp files.
 	WarningAllowedProjects = []string{

cc/ndk_library.go

@@ -261,6 +261,7 @@ func addStubLibraryCompilerFlags(flags Flags) Flags {
 		// We're knowingly doing some otherwise unsightly things with builtin
 		// functions here. We're just generating stub libraries, so ignore it.
 		"-Wno-incompatible-library-redeclaration",
+		"-Wno-incomplete-setjmp-declaration",
 		"-Wno-builtin-requires-header",
 		"-Wno-invalid-noreturn",
 		"-Wall",

cc/xom.go

@@ -68,7 +68,10 @@ func (xom *xom) flags(ctx ModuleContext, flags Flags) Flags {
 	if !disableXom || (xom.Properties.Xom != nil && *xom.Properties.Xom) {
 		// XOM is only supported on AArch64 when using lld.
 		if ctx.Arch().ArchType == android.Arm64 && ctx.useClangLld(ctx) {
-			flags.Local.LdFlags = append(flags.Local.LdFlags, "-Wl,-execute-only")
+			flags.Local.LdFlags = append(flags.Local.LdFlags,
+				"-Wl,--execute-only",
+				"-Wl,-z,separate-code",
+			)
 		}
 	}
 

rust/config/arm64_device.go

@@ -27,7 +27,8 @@ var (
 		"-Wl,--icf=safe",
 		"-Wl,-z,max-page-size=4096",
 
-		"-Wl,-execute-only",
+		"-Wl,--execute-only",
+		"-Wl,-z,separate-code",
 	}
 
 	Arm64ArchVariantRustFlags = map[string][]string{