llvm-6502/test/Transforms/DeadStoreElimination/byval.ll

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; RUN: llvm-as < %s | opt -dse | llvm-dis | not grep store
%struct.x = type { i32, i32, i32, i32 }
define i32 @foo(%struct.x* byval %a) nounwind {
entry:
%tmp2 = getelementptr %struct.x* %a, i32 0, i32 0
store i32 1, i32* %tmp2, align 4
ret i32 1
}