-; RUN: opt %s -constprop | llvm-dis | \
-; RUN: grep {i32 -1}
-; RUN: opt %s -constprop | llvm-dis | \
+; RUN: opt < %s -constprop -S | \
+; RUN: grep "i32 -1"
+; RUN: opt < %s -constprop -S | \
; RUN: not grep zeroinitializer
define <4 x i32> @test() {