Add FileCheck to reborrow.rs

Author: Shunpoco

tests/mir-opt/copy-prop/reborrow.rs

@@ -1,4 +1,3 @@
-// skip-filecheck
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
 // Check that CopyProp considers reborrows as not mutating the pointer.
 //@ test-mir-pass: CopyProp
@@ -8,6 +7,9 @@ fn opaque(_: impl Sized) {}
 
 // EMIT_MIR reborrow.remut.CopyProp.diff
 fn remut(mut x: u8) {
+    // CHECK-LABEL: fn remut(
+    // CHECK: debug a => [[a:_.*]];
+    // CHECK: debug c => [[a]];
     let a = &mut x;
     let b = &mut *a; //< this cannot mutate a.
     let c = a; //< so `c` and `a` can be merged.
@@ -16,6 +18,9 @@ fn remut(mut x: u8) {
 
 // EMIT_MIR reborrow.reraw.CopyProp.diff
 fn reraw(mut x: u8) {
+    // CHECK-LABEL: fn reraw(
+    // CHECK: debug a => [[a:_.*]];
+    // CHECK: debug c => [[a]];
     let a = &mut x;
     let b = &raw mut *a; //< this cannot mutate a.
     let c = a; //< so `c` and `a` can be merged.
@@ -24,6 +29,9 @@ fn reraw(mut x: u8) {
 
 // EMIT_MIR reborrow.miraw.CopyProp.diff
 fn miraw(mut x: u8) {
+    // CHECK-LABEL: fn miraw(
+    // CHECK: debug a => [[a:_.*]];
+    // CHECK: debug c => [[a]];
     let a = &raw mut x;
     let b = unsafe { &raw mut *a }; //< this cannot mutate a.
     let c = a; //< so `c` and `a` can be merged.
@@ -32,6 +40,9 @@ fn miraw(mut x: u8) {
 
 // EMIT_MIR reborrow.demiraw.CopyProp.diff
 fn demiraw(mut x: u8) {
+    // CHECK-LABEL: fn demiraw(
+    // CHECK: debug a => [[a:_.*]];
+    // CHECK: debug c => [[a]];
     let a = &raw mut x;
     let b = unsafe { &mut *a }; //< this cannot mutate a.
     let c = a; //< so `c` and `a` can be merged.