fix a bug I introduced with my 'instcombine builder' refactoring 
changes: SimplifyDemandedBits can't use the builder yet because it
has the wrong insertion point.  This fixes a crash building
MultiSource/Benchmarks/PAQ8p

llvm-svn: 80537
diff --git a/llvm/test/Transforms/InstCombine/crash.ll b/llvm/test/Transforms/InstCombine/crash.ll
new file mode 100644
index 0000000..03bad99
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/crash.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis
+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-f80:128:128"
+target triple = "i386-apple-darwin10.0"
+
+define i32 @_Z9model8bitR5Mixeri(i8 %tmp2) ssp {
+entry:
+  %tmp3 = zext i8 %tmp2 to i32
+  %tmp8 = lshr i32 %tmp3, 6 
+  %tmp9 = lshr i32 %tmp3, 7 
+  %tmp10 = xor i32 %tmp9, 67108858
+  %tmp11 = xor i32 %tmp10, %tmp8 
+  %tmp12 = xor i32 %tmp11, 0     
+  ret i32 %tmp12
+}