1 files changed, 61 insertions, 0 deletions
diff --git a/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir
new file mode 100644
index 000000000..98c267e8e
--- /dev/null
+++ b/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir
@@ -0,0 +1,61 @@
+// MIR for `step_forward` after PreCodegen
+
+fn step_forward(_1: u32, _2: usize) -> u32 {
+    debug x => _1;
+    debug n => _2;
+    let mut _0: u32;
+    scope 1 (inlined <u32 as Step>::forward) {
+        debug start => _1;
+        debug n => _2;
+        let _3: std::option::Option<u32>;
+        let mut _4: &std::option::Option<u32>;
+        let mut _7: bool;
+        let mut _8: u32;
+        scope 2 {
+        }
+        scope 3 (inlined Option::<u32>::is_none) {
+            debug self => _4;
+            let mut _6: bool;
+            scope 4 (inlined Option::<u32>::is_some) {
+                debug self => _4;
+                let mut _5: isize;
+            }
+        }
+        scope 5 (inlined core::num::<impl u32>::wrapping_add) {
+            debug self => _1;
+            debug rhs => _8;
+        }
+    }
+
+    bb0: {
+        StorageLive(_7);
+        StorageLive(_4);
+        StorageLive(_3);
+        _3 = <u32 as Step>::forward_checked(_1, _2) -> [return: bb1, unwind continue];
+    }
+
+    bb1: {
+        _4 = &_3;
+        StorageLive(_6);
+        _5 = discriminant((*_4));
+        _6 = Eq(_5, const 1_isize);
+        _7 = Not(move _6);
+        StorageDead(_6);
+        StorageDead(_3);
+        StorageDead(_4);
+        switchInt(move _7) -> [0: bb3, otherwise: bb2];
+    }
+
+    bb2: {
+        assert(!const true, "attempt to compute `{} + {}`, which would overflow", const _, const 1_u32) -> [success: bb3, unwind continue];
+    }
+
+    bb3: {
+        StorageDead(_7);
+        StorageLive(_8);
+        _8 = _2 as u32 (IntToInt);
+        _0 = Add(_1, _8);
+        StorageDead(_8);
+        return;
+    }
+}