From: Chris Lattner <sabre@nondot.org>
Date: Wed, 20 Jan 2010 17:57:50 +0000 (+0000)
Subject: don't send null pointers through the constantexpr codepath unneededly.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b0bedd6ebbbf0b9791291f37da5666dd456cf5b1;p=oota-llvm.git

don't send null pointers through the constantexpr codepath unneededly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94010 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 4c5e079f03b..32e9036af94 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1247,6 +1247,12 @@ void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
   if (const ConstantVector *V = dyn_cast<ConstantVector>(CV))
     return EmitGlobalConstantVector(V, AddrSpace, *this);
 
+  if (isa<ConstantPointerNull>(CV)) {
+    unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType());
+    OutStreamer.EmitIntValue(0, Size, AddrSpace);
+    return;
+  }
+  
   // Otherwise, it must be a ConstantExpr.  Emit the data directive, then emit
   // the expression value.
   switch (TM.getTargetData()->getTypeAllocSize(CV->getType())) {