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1; RUN: opt < %s -loop-reduce -S | grep mul | count 12; LSR should not make two copies of the Q*L expression in the preheader!3 4define i8 @test(ptr %A, ptr %B, i32 %L, i32 %Q, i32 %N.s) {5entry:6 %tmp.6 = mul i32 %Q, %L ; <i32> [#uses=1]7 %N = bitcast i32 %N.s to i32 ; <i32> [#uses=1]8 br label %no_exit9no_exit: ; preds = %no_exit, %entry10 %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, ptr %A, i32 %tmp.8 ; <ptr> [#uses=1]16 %tmp.10 = load i8, ptr %tmp.9 ; <i8> [#uses=1]17 %tmp.17 = getelementptr i8, ptr %B, i32 %tmp.8 ; <ptr> [#uses=1]18 %tmp.18 = load i8, ptr %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_exit24loopexit: ; preds = %no_exit25 ret i8 %tmp.2126}27 28