Use opt -S instead of piping bitcode output through llvm-dis.

llvm-svn: 81257
diff --git a/llvm/test/Transforms/InstCombine/malloc2.ll b/llvm/test/Transforms/InstCombine/malloc2.ll
index 3275311..102422e 100644
--- a/llvm/test/Transforms/InstCombine/malloc2.ll
+++ b/llvm/test/Transforms/InstCombine/malloc2.ll
@@ -1,5 +1,5 @@
-; RUN: opt %s -instcombine | llvm-dis | grep {ret i32 0}
-; RUN: opt %s -instcombine | llvm-dis | not grep malloc
+; RUN: opt < %s -instcombine -S | grep {ret i32 0}
+; RUN: opt < %s -instcombine -S | not grep malloc
 ; PR1313
 
 define i32 @test1(i32 %argc, i8* %argv, i8* %envp) {