patch up mir-opt tests

Author: nikomatsakis

src/test/mir-opt/nll/named-lifetimes-basic.rs

@@ -34,15 +34,15 @@ fn main() {
 // | '_#4r    | Local    | ['_#4r]
 // |
 // | Inferred Region Values
-// | '_#0r    | {'_#0r, bb0[0..=1]}
-// | '_#1r    | {'_#1r, bb0[0..=1]}
-// | '_#2r    | {'_#2r, bb0[0..=1]}
-// | '_#3r    | {'_#3r, bb0[0..=1]}
-// | '_#4r    | {'_#4r, bb0[0..=1]}
-// | '_#5r    | {'_#1r, bb0[0..=1]}
-// | '_#6r    | {'_#2r, bb0[0..=1]}
-// | '_#7r    | {'_#1r, bb0[0..=1]}
-// | '_#8r    | {'_#3r, bb0[0..=1]}
+// | '_#0r    | U0 | {bb0[0..=127], '_#0r}
+// | '_#1r    | U0 | {bb0[0..=127], '_#1r}
+// | '_#2r    | U0 | {bb0[0..=127], '_#2r}
+// | '_#3r    | U0 | {bb0[0..=127], '_#3r}
+// | '_#4r    | U0 | {bb0[0..=127], '_#4r}
+// | '_#5r    | U0 | {bb0[0..=127], '_#1r}
+// | '_#6r    | U0 | {bb0[0..=127], '_#2r}
+// | '_#7r    | U0 | {bb0[0..=127], '_#1r}
+// | '_#8r    | U0 | {bb0[0..=127], '_#3r}
 // |
 // ...
 // fn use_x(_1: &'_#5r mut i32, _2: &'_#6r u32, _3: &'_#7r u32, _4: &'_#8r u32) -> bool {

src/test/mir-opt/nll/reborrow-basic.rs

@@ -28,9 +28,9 @@ fn main() {
 
 // END RUST SOURCE
 // START rustc.main.nll.0.mir
-// | '_#7r    | {bb0[4], bb0[8..=17]}
+// | '_#7r    | U0 | {bb0[4], bb0[8..=17]}
 // ...
-// | '_#9r    | {bb0[10], bb0[14..=17]}
+// | '_#9r    | U0 | {bb0[10], bb0[14..=17]}
 // ...
 // let _4: &'_#9r mut i32;
 // ...

src/test/mir-opt/nll/region-subtyping-basic.rs

@@ -32,9 +32,9 @@ fn main() {
 
 // END RUST SOURCE
 // START rustc.main.nll.0.mir
-// | '_#2r    | {bb2[0..=3], bb3[0..=1]}
-// | '_#3r    | {bb2[1..=3], bb3[0..=1]}
-// | '_#4r    | {bb2[3], bb3[0..=1]}
+// | '_#2r    | U0 | {bb2[0..=3], bb3[0..=1]}
+// | '_#3r    | U0 | {bb2[1..=3], bb3[0..=1]}
+// | '_#4r    | U0 | {bb2[3], bb3[0..=1]}
 // END rustc.main.nll.0.mir
 // START rustc.main.nll.0.mir
 // let _6: &'_#4r usize;