From aa06410ccd112d6276e734f8413f2754d32a1f47 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Thu, 27 Oct 2016 11:28:35 -0700
Subject: recurse in optimizeBoolean (#809)

---
 src/passes/OptimizeInstructions.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src')

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;
   }
 
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