1 ; RUN: llvm-upgrade < %s | llvm-as | opt -loop-reduce | llvm-dis | grep mul | wc -l | grep 1
2 ; LSR should not make two copies of the Q*L expression in the preheader!
4 sbyte %test(sbyte* %A, sbyte* %B, int %L, int %Q, int %N) {
6 %tmp.6 = mul int %Q, %L ; <int> [#uses=1]
7 %N = cast int %N to uint ; <uint> [#uses=1]
10 no_exit: ; preds = %no_exit, %no_exit.preheader
11 %indvar = phi uint [ 0, %entry], [ %indvar.next, %no_exit ] ; <uint> [#uses=2]
12 %Sum.0.0 = phi sbyte [ 0, %entry], [ %tmp.21, %no_exit ] ; <sbyte> [#uses=1]
13 %indvar = cast uint %indvar to int ; <int> [#uses=1]
14 %N_addr.0.0 = sub int %N, %indvar ; <int> [#uses=1]
15 %tmp.8 = add int %N_addr.0.0, %tmp.6 ; <int> [#uses=2]
16 %tmp.9 = getelementptr sbyte* %A, int %tmp.8 ; <sbyte*> [#uses=1]
17 %tmp.10 = load sbyte* %tmp.9 ; <sbyte> [#uses=1]
18 %tmp.17 = getelementptr sbyte* %B, int %tmp.8 ; <sbyte*> [#uses=1]
19 %tmp.18 = load sbyte* %tmp.17 ; <sbyte> [#uses=1]
20 %tmp.19 = sub sbyte %tmp.10, %tmp.18 ; <sbyte> [#uses=1]
21 %tmp.21 = add sbyte %tmp.19, %Sum.0.0 ; <sbyte> [#uses=2]
22 %indvar.next = add uint %indvar, 1 ; <uint> [#uses=2]
23 %exitcond = seteq uint %indvar.next, %N ; <bool> [#uses=1]
24 br bool %exitcond, label %loopexit, label %no_exit