Update aosp/master LLVM for rebase to r275480

Bug: http://b/31320715

This merges commit 7dcf7f03e005379ef2f06db96aa93f06186b66d5 from
aosp/dev.

Test: Build AOSP and run RenderScript tests (host tests for slang and
libbcc, RsTest, CTS)

Change-Id: Iaf3738f74312d875e69f61d604ac058f381a2a1a

test/CodeGen/PowerPC/fast-isel-ret.ll

diff --git a/test/CodeGen/PowerPC/fast-isel-ret.ll b/test/CodeGen/PowerPC/fast-isel-ret.ll
index e05ef7d..0adb5a9 100644
--- a/test/CodeGen/PowerPC/fast-isel-ret.ll
+++ b/test/CodeGen/PowerPC/fast-isel-ret.ll
@@ -186,3 +186,12 @@
 ; ELF64: blr
   ret i32 -1
 }
+
+define zeroext i16 @ret20() nounwind {
+entry:
+; ELF64-LABEL: ret20
+; ELF64: lis{{.*}}0
+; ELF64: ori{{.*}}32768
+; ELF64: blr
+  ret i16 32768
+}