From fe82c1180a3ccaa1abc198af90e679b2c2858dc0 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Sat, 27 Sep 2008 23:22:55 +0000
Subject: [PATCH] Add IRBuilder::{CreateIsNull, CreateIsNonNull} helper
 methods.  - I'm open to the idea that these could have better names. I think 
   these read better than CreateEQNull and CreateNENull.

llvm-svn: 56757
---
 include/llvm/Support/IRBuilder.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/llvm/Support/IRBuilder.h b/include/llvm/Support/IRBuilder.h
index 0be481bc101..1156825efb3 100644
--- a/include/llvm/Support/IRBuilder.h
+++ b/include/llvm/Support/IRBuilder.h
@@ -630,6 +630,23 @@ public:
                                             IdxBegin, IdxEnd - IdxBegin);
     return Insert(InsertValueInst::Create(Agg, Val, IdxBegin, IdxEnd), Name);
   }
+
+  //===--------------------------------------------------------------------===//
+  // Utility creation methods
+  //===--------------------------------------------------------------------===//
+
+  /// CreateIsNull - Return an i1 value testing if \arg Arg is null.
+  Value *CreateIsNull(Value *Arg, const char *Name = "") {
+    return CreateICmpEQ(Arg, llvm::Constant::getNullValue(Arg->getType()), 
+                        Name);
+  }
+
+  /// CreateIsNonNull - Return an i1 value testing if \arg Arg is not null.
+  Value *CreateIsNonNull(Value *Arg, const char *Name = "") {
+    return CreateICmpNE(Arg, llvm::Constant::getNullValue(Arg->getType()), 
+                        Name);
+  }
+  
 };
 
 }