diff --git a/test/CodeGen/PowerPC/2006-12-07-LargeAlloca.ll b/test/CodeGen/PowerPC/2006-12-07-LargeAlloca.ll
new file mode 100644
index 00000000000..a45991c234a
--- /dev/null
+++ b/test/CodeGen/PowerPC/2006-12-07-LargeAlloca.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | llc -march=ppc64 &&
+; RUN: llvm-as < %s | llc -march=ppc32 &&
+; RUN: llvm-as < %s | llc 
+
+void %bitap() {
+entry:
+	%RMask.i = alloca [256 x uint], align 16		; <[256 x uint]*> [#uses=1]
+	%buffer = alloca [147456 x sbyte], align 16		; <[147456 x sbyte]*> [#uses=0]
+	br bool false, label %bb19, label %bb.preheader
+
+bb.preheader:		; preds = %entry
+	ret void
+
+bb19:		; preds = %entry
+	br bool false, label %bb12.i, label %cond_next39
+
+bb12.i:		; preds = %bb12.i, %bb19
+	%i.0.i = phi uint [ %tmp11.i, %bb12.i ], [ 0, %bb19 ]		; <uint> [#uses=2]
+	%tmp9.i = getelementptr [256 x uint]* %RMask.i, int 0, uint %i.0.i		; <uint*> [#uses=1]
+	store uint 0, uint* %tmp9.i
+	%tmp11.i = add uint %i.0.i, 1		; <uint> [#uses=1]
+	br label %bb12.i
+
+cond_next39:		; preds = %bb19
+	ret void
+}