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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep icmp ; PR1678 @A = alias weak void ()* @B ; <void ()*> [#uses=1] declare extern_weak void @B() define i32 @active() { entry: %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] %tmp1 = icmp ne void ()* @A, null ; <i1> [#uses=1] %tmp12 = zext i1 %tmp1 to i32 ; <i32> [#uses=1] ret i32 %tmp12 }