1 ; RUN: opt < %s -loop-reduce -S | not grep mul 2 3 ; Provide legal integer types. 4 target datalayout = "n8:16:32:64" 5 6 ; Make sure we don't get a multiply by 6 in this loop. 7 8 define i32 @foo(i32 %A, i32 %B, i32 %C, i32 %D) { 9 entry: 10 %tmp.5 = icmp sgt i32 %C, 0 ; <i1> [#uses=1] 11 %tmp.25 = and i32 %A, 1 ; <i32> [#uses=1] 12 br label %loopentry.1 13 loopentry.1: ; preds = %loopexit.1, %entry 14 %indvar20 = phi i32 [ 0, %entry ], [ %indvar.next21, %loopexit.1 ] ; <i32> [#uses=2] 15 %k.1 = phi i32 [ 0, %entry ], [ %k.1.3, %loopexit.1 ] ; <i32> [#uses=2] 16 br i1 %tmp.5, label %no_exit.1.preheader, label %loopexit.1 17 no_exit.1.preheader: ; preds = %loopentry.1 18 %i.0.0 = bitcast i32 %indvar20 to i32 ; <i32> [#uses=1] 19 %tmp.9 = mul i32 %i.0.0, 6 ; <i32> [#uses=1] 20 br label %no_exit.1.outer 21 no_exit.1.outer: ; preds = %cond_true, %no_exit.1.preheader 22 %k.1.2.ph = phi i32 [ %k.1, %no_exit.1.preheader ], [ %k.09, %cond_true ] ; <i32> [#uses=2] 23 %j.1.2.ph = phi i32 [ 0, %no_exit.1.preheader ], [ %inc.1, %cond_true ] ; <i32> [#uses=1] 24 br label %no_exit.1 25 no_exit.1: ; preds = %cond_continue, %no_exit.1.outer 26 %indvar.ui = phi i32 [ 0, %no_exit.1.outer ], [ %indvar.next, %cond_continue ] ; <i32> [#uses=2] 27 %indvar = bitcast i32 %indvar.ui to i32 ; <i32> [#uses=1] 28 %j.1.2 = add i32 %indvar, %j.1.2.ph ; <i32> [#uses=2] 29 %tmp.11 = add i32 %j.1.2, %tmp.9 ; <i32> [#uses=1] 30 %tmp.12 = trunc i32 %tmp.11 to i8 ; <i8> [#uses=1] 31 %shift.upgrd.1 = zext i8 %tmp.12 to i32 ; <i32> [#uses=1] 32 %tmp.13 = shl i32 %D, %shift.upgrd.1 ; <i32> [#uses=2] 33 %tmp.15 = icmp eq i32 %tmp.13, %B ; <i1> [#uses=1] 34 %inc.1 = add i32 %j.1.2, 1 ; <i32> [#uses=3] 35 br i1 %tmp.15, label %cond_true, label %cond_continue 36 cond_true: ; preds = %no_exit.1 37 %tmp.26 = and i32 %tmp.25, %tmp.13 ; <i32> [#uses=1] 38 %k.09 = add i32 %tmp.26, %k.1.2.ph ; <i32> [#uses=2] 39 %tmp.517 = icmp slt i32 %inc.1, %C ; <i1> [#uses=1] 40 br i1 %tmp.517, label %no_exit.1.outer, label %loopexit.1 41 cond_continue: ; preds = %no_exit.1 42 %tmp.519 = icmp slt i32 %inc.1, %C ; <i1> [#uses=1] 43 %indvar.next = add i32 %indvar.ui, 1 ; <i32> [#uses=1] 44 br i1 %tmp.519, label %no_exit.1, label %loopexit.1 45 loopexit.1: ; preds = %cond_continue, %cond_true, %loopentry.1 46 %k.1.3 = phi i32 [ %k.1, %loopentry.1 ], [ %k.09, %cond_true ], [ %k.1.2.ph, %cond_continue ] ; <i32> [#uses=2] 47 %indvar.next21 = add i32 %indvar20, 1 ; <i32> [#uses=2] 48 %exitcond = icmp eq i32 %indvar.next21, 4 ; <i1> [#uses=1] 49 br i1 %exitcond, label %loopexit.0, label %loopentry.1 50 loopexit.0: ; preds = %loopexit.1 51 ret i32 %k.1.3 52 } 53
