Separate test cases into bbs.

Author: cjgillot

tests/mir-opt/reference_prop.dominate_storage.ReferencePropagation.diff

@@ -24,7 +24,7 @@
           _5 = (*_2);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
           _0 = opaque::<i32>(_5) -> bb3;   // scope 0 at $DIR/reference_prop.rs:+16:13: +16:38
                                            // mir::Constant
-                                           // + span: $DIR/reference_prop.rs:357:28: 357:34
+                                           // + span: $DIR/reference_prop.rs:382:28: 382:34
                                            // + literal: Const { ty: fn(i32) {opaque::<i32>}, val: Value(<ZST>) }
       }
 

tests/mir-opt/reference_prop.maybe_dead.ReferencePropagation.diff

@@ -9,6 +9,7 @@
       let mut _5: &mut i32;                // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
       let mut _6: i32;                     // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
       let mut _7: i32;                     // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+      let mut _8: i32;                     // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
 
       bb0: {
           StorageLive(_2);                 // scope 0 at $DIR/reference_prop.rs:+7:13: +7:27
@@ -18,33 +19,38 @@
           _4 = &_2;                        // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
           _5 = &mut _3;                    // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
           (*_5) = const 7_i32;             // scope 0 at $DIR/reference_prop.rs:+14:13: +14:19
-          switchInt(_1) -> [1: bb1, otherwise: bb2]; // scope 0 at $DIR/reference_prop.rs:+15:13: +15:46
+-         _6 = (*_4);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
++         _6 = _2;                         // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+          switchInt(_1) -> [1: bb1, otherwise: bb2]; // scope 0 at $DIR/reference_prop.rs:+17:13: +17:46
       }
 
       bb1: {
-          StorageDead(_2);                 // scope 0 at $DIR/reference_prop.rs:+18:13: +18:27
-          StorageDead(_3);                 // scope 0 at $DIR/reference_prop.rs:+19:13: +19:27
-          goto -> bb2;                     // scope 0 at $DIR/reference_prop.rs:+20:13: +20:22
+          StorageDead(_2);                 // scope 0 at $DIR/reference_prop.rs:+20:13: +20:27
+          StorageDead(_3);                 // scope 0 at $DIR/reference_prop.rs:+21:13: +21:27
+          _0 = opaque::<i32>(_6) -> bb2;   // scope 0 at $DIR/reference_prop.rs:+22:13: +22:38
+                                           // mir::Constant
+                                           // + span: $DIR/reference_prop.rs:416:28: 416:34
+                                           // + literal: Const { ty: fn(i32) {opaque::<i32>}, val: Value(<ZST>) }
       }
 
       bb2: {
-          _6 = (*_4);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
-          _0 = opaque::<i32>(_6) -> bb3;   // scope 0 at $DIR/reference_prop.rs:+25:13: +25:38
+          _7 = (*_4);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+          _0 = opaque::<i32>(_7) -> bb3;   // scope 0 at $DIR/reference_prop.rs:+27:13: +27:38
                                            // mir::Constant
-                                           // + span: $DIR/reference_prop.rs:394:28: 394:34
+                                           // + span: $DIR/reference_prop.rs:421:28: 421:34
                                            // + literal: Const { ty: fn(i32) {opaque::<i32>}, val: Value(<ZST>) }
       }
 
       bb3: {
-          _7 = (*_5);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
-          _0 = opaque::<i32>(_7) -> bb4;   // scope 0 at $DIR/reference_prop.rs:+31:13: +31:43
+          _8 = (*_5);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+          _0 = opaque::<i32>(_8) -> bb4;   // scope 0 at $DIR/reference_prop.rs:+33:13: +33:43
                                            // mir::Constant
-                                           // + span: $DIR/reference_prop.rs:400:33: 400:39
+                                           // + span: $DIR/reference_prop.rs:427:33: 427:39
                                            // + literal: Const { ty: fn(i32) {opaque::<i32>}, val: Value(<ZST>) }
       }
 
       bb4: {
-          return;                          // scope 0 at $DIR/reference_prop.rs:+34:13: +34:21
+          return;                          // scope 0 at $DIR/reference_prop.rs:+36:13: +36:21
       }
   }
 

tests/mir-opt/reference_prop.multiple_storage.ReferencePropagation.diff

@@ -16,7 +16,7 @@
           _3 = (*_2);                      // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
           _0 = opaque::<i32>(_3) -> bb1;   // scope 0 at $DIR/reference_prop.rs:+14:13: +14:43
                                            // mir::Constant
-                                           // + span: $DIR/reference_prop.rs:331:33: 331:39
+                                           // + span: $DIR/reference_prop.rs:356:33: 356:39
                                            // + literal: Const { ty: fn(i32) {opaque::<i32>}, val: Value(<ZST>) }
       }