diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 21108c6..599a6f6 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -687,7 +687,7 @@
         if (isa<ConstantInt>(GEP1Ops[i]) && 
             !cast<ConstantInt>(GEP1Ops[i])->isZero()) {
           // Yup, there's a constant in the tail.  Set all variables to
-          // constants in the GEP instruction to make it suiteable for
+          // constants in the GEP instruction to make it suitable for
           // TargetData::getIndexedOffset.
           for (i = 0; i != MaxOperands; ++i)
             if (!isa<ConstantInt>(GEP1Ops[i]))
@@ -702,9 +702,15 @@
           int64_t Offset2 = TD.getIndexedOffset(GEPPointerTy, GEP1Ops,
                                                 MinOperands);
 
+          // Make sure we compare the absolute difference.
+          if (Offset1 > Offset2)
+            std::swap(Offset1, Offset2);
+
           // If the tail provided a bit enough offset, return noalias!
           if ((uint64_t)(Offset2-Offset1) >= SizeMax)
             return NoAlias;
+          // Otherwise break - we don't look for another constant in the tail.
+          break;
         }
     }
 
diff --git a/test/Analysis/BasicAA/2008-06-02-GEPTailCrash.ll b/test/Analysis/BasicAA/2008-06-02-GEPTailCrash.ll
new file mode 100644
index 0000000..40d1e32
--- /dev/null
+++ b/test/Analysis/BasicAA/2008-06-02-GEPTailCrash.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | opt -gvn -disable-output
+; PR2395
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
+target triple = "i686-pc-linux-gnu"
+	%struct.S291 = type <{ %union.anon, i32 }>
+	%union.anon = type {  }
+@a291 = external global [5 x %struct.S291]		; <[5 x %struct.S291]*> [#uses=2]
+
+define void @test291() nounwind  {
+entry:
+	store i32 1138410269, i32* getelementptr ([5 x %struct.S291]* @a291, i32 0, i32 2, i32 1)
+	%tmp54 = load i32* bitcast (%struct.S291* getelementptr ([5 x %struct.S291]* @a291, i32 0, i32 2) to i32*), align 4		; <i32> [#uses=0]
+	unreachable
+}