Add FileCheck for early_otherwise_branch*.rs

Author: dianqk

tests/mir-opt/early_otherwise_branch.rs

@@ -1,10 +1,16 @@
-// skip-filecheck
 //@ unit-test: EarlyOtherwiseBranch
 //@ compile-flags: -Zmir-enable-passes=+UninhabitedEnumBranching
 
 // We can't optimize it because y may be an invalid value.
 // EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
 fn opt1(x: Option<u32>, y: Option<u32>) -> u32 {
+    // CHECK-LABEL: fn opt1(
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK-NOT: Ne
+    // CHECK-NOT: discriminant
+    // CHECK: switchInt(move [[LOCAL1]]) -> [
+    // CHECK-NEXT: }
     match (x, y) {
         (Some(a), Some(b)) => 0,
         _ => 1,
@@ -13,6 +19,14 @@ fn opt1(x: Option<u32>, y: Option<u32>) -> u32 {
 
 // EMIT_MIR early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
 fn opt2(x: Option<u32>, y: Option<u32>) -> u32 {
+    // CHECK-LABEL: fn opt2(
+    // CHECK: let mut [[CMP_LOCAL:_.*]]: bool;
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK: [[LOCAL2:_.*]] = discriminant({{.*}});
+    // CHECK: [[CMP_LOCAL]] = Ne([[LOCAL1]], move [[LOCAL2]]);
+    // CHECK: switchInt(move [[CMP_LOCAL]]) -> [
+    // CHECK-NEXT: }
     match (x, y) {
         (Some(a), Some(b)) => 0,
         (None, None) => 2,
@@ -23,6 +37,14 @@ fn opt2(x: Option<u32>, y: Option<u32>) -> u32 {
 // optimize despite different types
 // EMIT_MIR early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
 fn opt3(x: Option<u32>, y: Option<bool>) -> u32 {
+    // CHECK-LABEL: fn opt3(
+    // CHECK: let mut [[CMP_LOCAL:_.*]]: bool;
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK: [[LOCAL2:_.*]] = discriminant({{.*}});
+    // CHECK: [[CMP_LOCAL]] = Ne([[LOCAL1]], move [[LOCAL2]]);
+    // CHECK: switchInt(move [[CMP_LOCAL]]) -> [
+    // CHECK-NEXT: }
     match (x, y) {
         (Some(a), Some(b)) => 0,
         (None, None) => 2,

tests/mir-opt/early_otherwise_branch_3_element_tuple.rs

@@ -1,9 +1,16 @@
-// skip-filecheck
 //@ unit-test: EarlyOtherwiseBranch
 //@ compile-flags: -Zmir-enable-passes=+UninhabitedEnumBranching
 
 // EMIT_MIR early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
 fn opt1(x: Option<u32>, y: Option<u32>, z: Option<u32>) -> u32 {
+    // CHECK-LABEL: fn opt1(
+    // CHECK: let mut [[CMP_LOCAL:_.*]]: bool;
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK: [[LOCAL2:_.*]] = discriminant({{.*}});
+    // CHECK: [[CMP_LOCAL]] = Ne([[LOCAL1]], move [[LOCAL2]]);
+    // CHECK: switchInt(move [[CMP_LOCAL]]) -> [
+    // CHECK-NEXT: }
     match (x, y, z) {
         (Some(a), Some(b), Some(c)) => 0,
         (None, None, None) => 0,

tests/mir-opt/early_otherwise_branch_68867.rs

@@ -1,4 +1,3 @@
-// skip-filecheck
 //@ unit-test: EarlyOtherwiseBranch
 //@ compile-flags: -Zmir-enable-passes=+UninhabitedEnumBranching
 
@@ -20,6 +19,13 @@ pub extern "C" fn try_sum(
     x: &ViewportPercentageLength,
     other: &ViewportPercentageLength,
 ) -> Result<ViewportPercentageLength, ()> {
+    // CHECK-LABEL: fn try_sum(
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK-NOT: Ne
+    // CHECK-NOT: discriminant
+    // CHECK: switchInt(move [[LOCAL1]]) -> [
+    // CHECK-NEXT: }
     use self::ViewportPercentageLength::*;
     Ok(match (x, other) {
         (&Vw(one), &Vw(other)) => Vw(one + other),

tests/mir-opt/early_otherwise_branch_noopt.rs

@@ -1,4 +1,3 @@
-// skip-filecheck
 //@ unit-test: EarlyOtherwiseBranch
 //@ compile-flags: -Zmir-enable-passes=+UninhabitedEnumBranching
 
@@ -7,6 +6,13 @@
 
 // EMIT_MIR early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
 fn noopt1(x: Option<u32>, y: Option<u32>) -> u32 {
+    // CHECK-LABEL: fn noopt1(
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK-NOT: Ne
+    // CHECK-NOT: discriminant
+    // CHECK: switchInt(move [[LOCAL1]]) -> [
+    // CHECK-NEXT: }
     match (x, y) {
         (Some(a), Some(b)) => 0,
         (Some(a), None) => 1,

tests/mir-opt/early_otherwise_branch_soundness.rs

@@ -1,4 +1,3 @@
-// skip-filecheck
 //@ unit-test: EarlyOtherwiseBranch
 //@ compile-flags: -Zmir-enable-passes=+UninhabitedEnumBranching
 
@@ -12,12 +11,26 @@ enum E<'a> {
 
 // EMIT_MIR early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff
 fn no_downcast(e: &E) -> u32 {
+    // CHECK-LABEL: fn no_downcast(
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK-NOT: Ne
+    // CHECK-NOT: discriminant
+    // CHECK: switchInt(move [[LOCAL1]]) -> [
+    // CHECK-NEXT: }
     if let E::Some(E::Some(_)) = e { 1 } else { 2 }
 }
 
 // SAFETY: if `a` is `Some`, `b` must point to a valid, initialized value
 // EMIT_MIR early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff
 unsafe fn no_deref_ptr(a: Option<i32>, b: *const Option<i32>) -> i32 {
+    // CHECK-LABEL: fn no_deref_ptr(
+    // CHECK: bb0: {
+    // CHECK: [[LOCAL1:_.*]] = discriminant({{.*}});
+    // CHECK-NOT: Ne
+    // CHECK-NOT: discriminant
+    // CHECK: switchInt(move [[LOCAL1]]) -> [
+    // CHECK-NEXT: }
     match a {
         // `*b` being correct depends on `a == Some(_)`
         Some(_) => match *b {