From 4f3c676102bc69f10920d05313ac71cb180ecc75 Mon Sep 17 00:00:00 2001
From: Nadav Rotem <nrotem@apple.com>
Date: Thu, 25 Oct 2012 21:52:52 +0000
Subject: Fix a crash in ValueTracking. Add support for vectors of pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166726 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/ValueTracking.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'lib/Analysis/ValueTracking.cpp')

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 1d7f0692cb..6e4457ed52 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -437,8 +437,9 @@ void llvm::ComputeMaskedBits(Value *V, APInt &KnownZero, APInt &KnownOne,
     if (SrcTy->isPointerTy())
       SrcBitWidth = TD->getTypeSizeInBits(SrcTy);
     else
-      SrcBitWidth = SrcTy->getScalarSizeInBits();
-    
+      SrcBitWidth = TD->getTypeSizeInBits(SrcTy->getScalarType());
+
+    assert(SrcBitWidth && "SrcBitWidth can't be zero");
     KnownZero = KnownZero.zextOrTrunc(SrcBitWidth);
     KnownOne = KnownOne.zextOrTrunc(SrcBitWidth);
     ComputeMaskedBits(I->getOperand(0), KnownZero, KnownOne, TD, Depth+1);
-- 
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