llvm-6502/test/Transforms/TailDup/MergeTest.ll

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; RUN: llvm-as < %s | opt -tailduplicate -taildup-threshold=2 | llvm-dis | grep add | not grep uses=1
define i32 @test1(i1 %C, i32 %A, i32* %P) {
entry:
br i1 %C, label %L1, label %L2
L1: ; preds = %entry
store i32 1, i32* %P
br label %L2
L2: ; preds = %L1, %entry
%X = add i32 %A, 17 ; <i32> [#uses=1]
ret i32 %X
}
define i32 @test2(i1 %C, i32 %A, i32* %P) {
entry:
br i1 %C, label %L1, label %L2
L1: ; preds = %entry
store i32 1, i32* %P
br label %L3
L2: ; preds = %entry
store i32 7, i32* %P
br label %L3
L3: ; preds = %L2, %L1
%X = add i32 %A, 17 ; <i32> [#uses=1]
ret i32 %X
}