Mechanically add end-of-function markers.

llvm-svn: 200005
diff --git a/compiler-rt/lib/arm/sync_synchronize.S b/compiler-rt/lib/arm/sync_synchronize.S
index 06dade9..aa18f04 100644
--- a/compiler-rt/lib/arm/sync_synchronize.S
+++ b/compiler-rt/lib/arm/sync_synchronize.S
@@ -27,6 +27,7 @@
 	add		r7, sp, #0
 	bl		_OSMemoryBarrier
 	ldmfd	sp!, {r7, pc}
+END_COMPILERRT_FUNCTION(__sync_synchronize)
 
 	// tell linker it can break up file at label boundaries
 	.subsections_via_symbols