1 ; RUN: opt < %s -loop-reduce -S | grep mul | count 1
2 ; LSR should not make two copies of the Q*L expression in the preheader!
4 define i8 @test(i8* %A, i8* %B, i32 %L, i32 %Q, i32 %N.s) {
6 %tmp.6 = mul i32 %Q, %L ; <i32> [#uses=1]
7 %N = bitcast i32 %N.s to i32 ; <i32> [#uses=1]
9 no_exit: ; preds = %no_exit, %entry
10 %indvar.ui = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=2]
11 %Sum.0.0 = phi i8 [ 0, %entry ], [ %tmp.21, %no_exit ] ; <i8> [#uses=1]
12 %indvar = bitcast i32 %indvar.ui to i32 ; <i32> [#uses=1]
13 %N_addr.0.0 = sub i32 %N.s, %indvar ; <i32> [#uses=1]
14 %tmp.8 = add i32 %N_addr.0.0, %tmp.6 ; <i32> [#uses=2]
15 %tmp.9 = getelementptr i8, i8* %A, i32 %tmp.8 ; <i8*> [#uses=1]
16 %tmp.10 = load i8, i8* %tmp.9 ; <i8> [#uses=1]
17 %tmp.17 = getelementptr i8, i8* %B, i32 %tmp.8 ; <i8*> [#uses=1]
18 %tmp.18 = load i8, i8* %tmp.17 ; <i8> [#uses=1]
19 %tmp.19 = sub i8 %tmp.10, %tmp.18 ; <i8> [#uses=1]
20 %tmp.21 = add i8 %tmp.19, %Sum.0.0 ; <i8> [#uses=2]
21 %indvar.next = add i32 %indvar.ui, 1 ; <i32> [#uses=2]
22 %exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1]
23 br i1 %exitcond, label %loopexit, label %no_exit
24 loopexit: ; preds = %no_exit