Make codegen test more sophisticated

Author: oberien

src/test/codegen/repeat-trusted-len.rs

@@ -1,4 +1,4 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
@@ -25,7 +25,7 @@ pub fn repeat_take_collect() -> Vec<u8> {
 // CHECK-LABEL: @range_from_take_collect
 #[no_mangle]
 pub fn range_from_take_collect() -> Vec<u8> {
-// CHECK: %broadcast.splatinsert = insertelement <{{[0-9]+}} x i8> undef, i8 %{{.*}}, i32 0
-// CHECK: %broadcast.splat = shufflevector <[[WIDTH:[0-9]+]] x i8> %broadcast.splatinsert, <[[WIDTH]] x i8> undef, <[[WIDTH]] x i32> zeroinitializer
+// CHECK: %[[SPLATINSERT:.*]] = insertelement <{{[0-9]+}} x i8> undef, i8 %{{.*}}, i32 0
+// CHECK: %{{.*}} = shufflevector <[[WIDTH:[0-9]+]] x i8> %[[SPLATINSERT]], <[[WIDTH]] x i8> undef, <[[WIDTH]] x i32> zeroinitializer
     (0..).take(100000).collect()
 }