From: Kostya Serebryany <kcc@google.com>
Date: Tue, 16 Aug 2016 21:28:05 +0000 (+0000)
Subject: [libFuzzer] minor speed improvement
X-Git-Tag: llvmorg-4.0.0-rc1~12280
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3044390af140b3c7a86d75aaa3b0ca7ee03432bf;p=platform%2Fupstream%2Fllvm.git

[libFuzzer] minor speed improvement

llvm-svn: 278856
---

diff --git a/llvm/lib/Fuzzer/FuzzerValueBitMap.h b/llvm/lib/Fuzzer/FuzzerValueBitMap.h
index 493afc5..65659f2 100644
--- a/llvm/lib/Fuzzer/FuzzerValueBitMap.h
+++ b/llvm/lib/Fuzzer/FuzzerValueBitMap.h
@@ -26,7 +26,7 @@ struct ValueBitMap {
 
   // Computed a hash function of Value and sets the corresponding bit.
   void AddValue(uintptr_t Value) {
-    uintptr_t Idx = Value % kMapSizeInBits;
+    uintptr_t Idx = Value < kMapSizeInBits ? Value : Value % kMapSizeInBits;
     uintptr_t WordIdx = Idx / kBitsInWord;
     uintptr_t BitIdx = Idx % kBitsInWord;
     Map[WordIdx] |= 1UL << BitIdx;