From d049ae31248fd3db11717a3ea006c5d1f59c913d Mon Sep 17 00:00:00 2001
From: JF Bastien <jfb@chromium.org>
Date: Wed, 23 Dec 2015 16:07:43 -0800
Subject: bits: return 32 on ctz32/clz32 of 0 instead of -1

---
 src/bits.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/bits.h')

diff --git a/src/bits.h b/src/bits.h
index 0ae83db3f..98bb96a4f 100644
--- a/src/bits.h
+++ b/src/bits.h
@@ -81,7 +81,7 @@ template<> inline int CountTrailingZeroes<uint32_t>(uint32_t v) {
   };
   return v ?
       (int)tbl[((uint32_t)((v & -(int32_t)v) * 0x077CB531U)) >> 27] :
-      -1;
+      32;
 }
 
 template<> inline int CountLeadingZeroes<uint32_t>(uint32_t v) {
@@ -99,7 +99,7 @@ template<> inline int CountLeadingZeroes<uint32_t>(uint32_t v) {
   v = v | (v >> 16);
   return v ?
       (int)tbl[((uint32_t)(v * 0x07C4ACDDU)) >> 27] :
-      -1;
+      32;
 }
 
 } // namespace wasm
-- 
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