From 5e557123ad3779e540fc795e083bad6be5a1c764 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 23 Nov 2007 22:36:25 +0000 Subject: [PATCH] Fix APInt::countTrailingZeros to return BitWidth if the input is zero instead of returning some random large number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44294 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Support/APInt.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp index c5abf4bf163..7af0101ece8 100644 --- a/lib/Support/APInt.cpp +++ b/lib/Support/APInt.cpp @@ -782,14 +782,14 @@ uint32_t APInt::countLeadingOnes() const { uint32_t APInt::countTrailingZeros() const { if (isSingleWord()) - return CountTrailingZeros_64(VAL); + return std::min(CountTrailingZeros_64(VAL), BitWidth); uint32_t Count = 0; uint32_t i = 0; for (; i < getNumWords() && pVal[i] == 0; ++i) Count += APINT_BITS_PER_WORD; if (i < getNumWords()) Count += CountTrailingZeros_64(pVal[i]); - return Count; + return std::min(Count, BitWidth); } uint32_t APInt::countPopulation() const {