1 ; RUN: opt < %s -loop-reduce -S | FileCheck %s 2 ; rdar://7382068 3 4 define void @t(i32 %c) nounwind optsize { 5 entry: 6 br label %bb6 7 8 bb1: ; preds = %bb6 9 %tmp = icmp eq i32 %c_addr.1, 20 ; <i1> [#uses=1] 10 br i1 %tmp, label %bb2, label %bb3 11 12 bb2: ; preds = %bb1 13 %tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1] 14 br label %bb7 15 16 bb3: ; preds = %bb1 17 %tmp2 = icmp slt i32 %c_addr.1, 10 ; <i1> [#uses=1] 18 %tmp3 = add nsw i32 %c_addr.1, 1 ; <i32> [#uses=1] 19 %tmp4 = add i32 %c_addr.1, -1 ; <i32> [#uses=1] 20 %c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1] 21 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 22 ; CHECK: add i32 %lsr.iv, -1 23 br label %bb6 24 25 bb6: ; preds = %bb3, %entry 26 %indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2] 27 %c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7] 28 %tmp5 = icmp eq i32 %indvar, 9999 ; <i1> [#uses=1] 29 ; CHECK: icmp eq i32 %lsr.iv, 0 30 %tmp6 = icmp eq i32 %c_addr.1, 100 ; <i1> [#uses=1] 31 %or.cond = or i1 %tmp5, %tmp6 ; <i1> [#uses=1] 32 br i1 %or.cond, label %bb7, label %bb1 33 34 bb7: ; preds = %bb6, %bb2 35 %c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1] 36 tail call void @bar(i32 %c_addr.0) nounwind 37 ret void 38 } 39 40 declare i32 @f20(i32) 41 42 declare void @bar(i32) 43
