From bd7f7ca58a93f438bd278e6ecb13afb685e5ed6e Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Fri, 28 Jul 2017 15:41:10 -0700
Subject: fix shl shift computation in getMaxBits

---
 src/passes/OptimizeInstructions.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/passes/OptimizeInstructions.cpp b/src/passes/OptimizeInstructions.cpp
index 43a8faa32..2a77b408a 100644
--- a/src/passes/OptimizeInstructions.cpp
+++ b/src/passes/OptimizeInstructions.cpp
@@ -188,7 +188,7 @@ Index getMaxBits(Expression* curr, LocalInfoProvider* localInfoProvider) {
       case OrInt32: case XorInt32: return std::max(getMaxBits(binary->left, localInfoProvider), getMaxBits(binary->right, localInfoProvider));
       case ShlInt32: {
         if (auto* shifts = binary->right->dynCast<Const>()) {
-          return std::min(Index(32), getMaxBits(binary->left, localInfoProvider) + shifts->value.geti32());
+          return std::min(Index(32), getMaxBits(binary->left, localInfoProvider) + (shifts->value.geti32() & 31));
         }
         return 32;
       }
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