From: Bill Wendling <isanbard@gmail.com>
Date: Wed, 5 Nov 2008 00:54:27 +0000 (+0000)
Subject: Simplify the allocated size calculation.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fa75dc647cbe09c43169658106713a57409d0faf;p=oota-llvm.git

Simplify the allocated size calculation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58740 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/StackProtector.cpp b/lib/CodeGen/StackProtector.cpp
index 36ae2846a81..631760ad822 100644
--- a/lib/CodeGen/StackProtector.cpp
+++ b/lib/CodeGen/StackProtector.cpp
@@ -201,9 +201,9 @@ bool StackProtector::RequiresStackProtector() const {
              II = BB->begin(), IE = BB->end(); II != IE; ++II)
         if (AllocaInst *AI = dyn_cast<AllocaInst>(II)) {
           if (ConstantInt *CI = dyn_cast<ConstantInt>(AI->getArraySize())) {
-            uint64_t Bytes = TD->getTypeSizeInBits(AI->getAllocatedType()) / 8;
-            const APInt &Size = CI->getValue();
-            StackSize += Bytes * Size.getZExtValue();
+            const Type *Ty = AI->getAllocatedType();
+            uint64_t TySize = TD->getABITypeSize(Ty);
+            StackSize += TySize * CI->getZExtValue(); // Total allocated size.
 
             if (SSPBufferSize <= StackSize)
               return true;