1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; PR1597 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; CHECK: Loop %bb: backedge-taken count is (-1 + (-1 * %x) + %y) 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine i32 @f(i32 %x, i32 %y) { 7*9880d681SAndroid Build Coastguard Workerentry: 8*9880d681SAndroid Build Coastguard Worker %tmp63 = icmp ult i32 %x, %y ; <i1> [#uses=1] 9*9880d681SAndroid Build Coastguard Worker br i1 %tmp63, label %bb.preheader, label %bb8 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerbb.preheader: ; preds = %entry 12*9880d681SAndroid Build Coastguard Worker br label %bb 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerbb: ; preds = %bb3, %bb.preheader 15*9880d681SAndroid Build Coastguard Worker %x_addr.0 = phi i32 [ %tmp2, %bb3 ], [ %x, %bb.preheader ] ; <i32> [#uses=1] 16*9880d681SAndroid Build Coastguard Worker %tmp2 = add i32 %x_addr.0, 1 ; <i32> [#uses=3] 17*9880d681SAndroid Build Coastguard Worker br label %bb3 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workerbb3: ; preds = %bb 20*9880d681SAndroid Build Coastguard Worker %tmp6 = icmp ult i32 %tmp2, %y ; <i1> [#uses=1] 21*9880d681SAndroid Build Coastguard Worker br i1 %tmp6, label %bb, label %bb8.loopexit 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerbb8.loopexit: ; preds = %bb3 24*9880d681SAndroid Build Coastguard Worker br label %bb8 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Workerbb8: ; preds = %bb8.loopexit, %entry 27*9880d681SAndroid Build Coastguard Worker %x_addr.1 = phi i32 [ %x, %entry ], [ %tmp2, %bb8.loopexit ] ; <i32> [#uses=1] 28*9880d681SAndroid Build Coastguard Worker br label %return 29*9880d681SAndroid Build Coastguard Worker 30*9880d681SAndroid Build Coastguard Workerreturn: ; preds = %bb8 31*9880d681SAndroid Build Coastguard Worker ret i32 %x_addr.1 32*9880d681SAndroid Build Coastguard Worker} 33