recurse in optimizeBoolean (#809)

1 files changed, 10 insertions, 0 deletions

diff --git a/src/passes/OptimizeInstructions.cpp b/src/passes/OptimizeInstructions.cpp
index 6454d3510..6ba34990f 100644
--- a/src/passes/OptimizeInstructions.cpp
+++ b/src/passes/OptimizeInstructions.cpp
@@ -371,7 +371,17 @@ private:
           }
         }
       }
+    } else if (auto* block = boolean->dynCast<Block>()) {
+      if (block->type == i32 && block->list.size() > 0) {
+        block->list.back() = optimizeBoolean(block->list.back());
+      }
+    } else if (auto* iff = boolean->dynCast<If>()) {
+      if (iff->type == i32) {
+        iff->ifTrue = optimizeBoolean(iff->ifTrue);
+        iff->ifFalse = optimizeBoolean(iff->ifFalse);
+      }
     }
+    // TODO: recurse into br values?
     return boolean;
   }