From: Dale Johannesen <dalej@apple.com>
Date: Wed, 12 Aug 2009 17:42:34 +0000 (+0000)
Subject: Fix a nondeterministic bug in APInt::roundToDouble;
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=39c177d8b7b03d5a851a3adf5ae816da1211c49e;p=oota-llvm.git

Fix a nondeterministic bug in APInt::roundToDouble;
when !isSingleWord() but getActiveBits() is small,
we were using the pointer value instead of the low
word of the integer value.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78821 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index a034fd1e797..6638fccfef5 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -897,10 +897,10 @@ double APInt::roundToDouble(bool isSigned) const {
   // Handle the simple case where the value is contained in one uint64_t.
   if (isSingleWord() || getActiveBits() <= APINT_BITS_PER_WORD) {
     if (isSigned) {
-      int64_t sext = (int64_t(VAL) << (64-BitWidth)) >> (64-BitWidth);
+      int64_t sext = (int64_t(getWord(0)) << (64-BitWidth)) >> (64-BitWidth);
       return double(sext);
     } else
-      return double(VAL);
+      return double(getWord(0));
   }
 
   // Determine if the value is negative.