1 files changed, 40 insertions, 0 deletions
diff --git a/test/lit/debug/replace-keep.wat b/test/lit/debug/replace-keep.wat
new file mode 100644
index 000000000..1418d13dd
--- /dev/null
+++ b/test/lit/debug/replace-keep.wat
@@ -0,0 +1,40 @@
+;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
+
+;; RUN: env BINARYEN_PRINT_FULL=1 wasm-opt %s --merge-blocks -S -o - | filecheck %s
+
+;; The optimization below will replace the local.set with the block it contains
+;; (i.e. it reorders them). While doing so we should keep the debug info of the
+;; local.set.
+
+(module
+  ;; CHECK:      (func $test
+  ;; CHECK-NEXT:  (local $temp i32)
+  ;; CHECK-NEXT:  [none] ;;@ src.cpp:200:2
+  ;; CHECK-NEXT:  [none](block
+  ;; CHECK-NEXT:   [none] ;;@ src.cpp:200:2
+  ;; CHECK-NEXT:   (call $test)
+  ;; CHECK-NEXT:   [none] ;;@ src.cpp:200:2
+  ;; CHECK-NEXT:   (local.set $temp
+  ;; CHECK-NEXT:    [i32] ;;@ src.cpp:200:2
+  ;; CHECK-NEXT:    (i32.const 1)
+  ;; CHECK-NEXT:   )
+  ;; CHECK-NEXT:  ) ;; end block
+  ;; CHECK-NEXT: )
+  (func $test
+    (local $temp i32)
+
+    ;; Everything here should stay with 200 as their debug info, while we
+    ;; optimize (we can remove the inner block, move the call up to before
+    ;; the local.set, and merge the outer blocks).
+
+    ;;@ src.cpp:200:2
+    (block
+      (local.set $temp
+        (block (result i32)
+          (call $test)
+          (i32.const 1)
+        )
+      )
+    )
+  )
+)