[Parser] Match legacy parser block naming (#6504)

To reduce the size of the test output diff when switching to the new text
parser, update it to generate the same block names as the legacy parser.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/wasm/wasm-ir-builder.cpp b/src/wasm/wasm-ir-builder.cpp
index bee858435..78ce07f8d 100644
--- a/src/wasm/wasm-ir-builder.cpp
+++ b/src/wasm/wasm-ir-builder.cpp
@@ -1035,7 +1035,11 @@ Result<Name> IRBuilder::getLabelName(Index label) {
   auto& scopeLabel = (*scope)->label;
   if (!scopeLabel) {
     // The scope does not already have a name, so we need to create one.
-    scopeLabel = makeFresh("label");
+    if ((*scope)->getBlock()) {
+      scopeLabel = makeFresh("block");
+    } else {
+      scopeLabel = makeFresh("label");
+    }
   }
   (*scope)->labelUsed = true;
   return scopeLabel;