Use unique'ed types for varargs expansion instead of non-unique named types.

test/Transforms/NaCl/expand-varargs-struct.ll

Index: test/Transforms/NaCl/expand-varargs-struct.ll
diff --git a/test/Transforms/NaCl/expand-varargs-struct.ll b/test/Transforms/NaCl/expand-varargs-struct.ll
index f147d7006fe5594acb44ab37b2eeb642ade62c9c..7bb310fd40d11f5d22b44801edc46d4df3eb5df3 100644
--- a/test/Transforms/NaCl/expand-varargs-struct.ll
+++ b/test/Transforms/NaCl/expand-varargs-struct.ll
@@ -5,8 +5,6 @@ declare i32 @varargs_func(i32 %arg, ...)
 
 %MyStruct = type { i64, i64 }
 
-; CHECK: %vararg_call = type <{ i64, %MyStruct }>
-
 ; Test passing a struct by value.
 define i32 @varargs_call_struct(%MyStruct* %ptr) {
   %result = call i32 (i32, ...)* @varargs_func(i32 111, i64 222, %MyStruct* byval %ptr)
@@ -14,5 +12,5 @@ define i32 @varargs_call_struct(%MyStruct* %ptr) {
 }
 ; CHECK: define i32 @varargs_call_struct(%MyStruct* %ptr) {
 ; CHECK: %vararg_struct_copy = load %MyStruct* %ptr
-; CHECK: %vararg_ptr1 = getelementptr %vararg_call* %vararg_buffer, i32 0, i32 1
+; CHECK: %vararg_ptr1 = getelementptr <{ i64, %MyStruct }>* %vararg_buffer, i32 0, i32 1
 ; CHECK: store %MyStruct %vararg_struct_copy, %MyStruct* %vararg_ptr1