From 85d2c4ffdaf3934f7e529cc43842a03c3304107b Mon Sep 17 00:00:00 2001
From: "Alon Zakai (kripken)" <alonzakai@gmail.com>
Date: Sat, 11 Feb 2017 22:04:22 -0800
Subject: handle tee_local in getMaxBits

---
 src/passes/OptimizeInstructions.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/passes/OptimizeInstructions.cpp b/src/passes/OptimizeInstructions.cpp
index cf5ad982e..d28bf21a5 100644
--- a/src/passes/OptimizeInstructions.cpp
+++ b/src/passes/OptimizeInstructions.cpp
@@ -228,6 +228,9 @@ static Index getMaxBits(Expression* curr) {
       case WrapInt64: return std::min(Index(32), getMaxBits(unary->value));
       default: {}
     }
+  } else if (auto* set = curr->dynCast<SetLocal>()) {
+    // a tee passes through the value
+    return getMaxBits(set->value);
   }
   switch (curr->type) {
     case i32: return 32;
-- 
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