1*9880d681SAndroid Build Coastguard Worker; REQUIRES: asserts 2*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -indvars -disable-output -stats -info-output-file - | FileCheck %s 3*9880d681SAndroid Build Coastguard Worker; Check that IndVarSimplify is not creating unnecessary canonical IVs 4*9880d681SAndroid Build Coastguard Worker; that will never be used. 5*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: indvars 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Worker@ue = external global i64 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdefine i32 @foo() nounwind { 12*9880d681SAndroid Build Coastguard Workerentry: 13*9880d681SAndroid Build Coastguard Worker br label %bb38.i 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Workerbb14.i27: 16*9880d681SAndroid Build Coastguard Worker %t0 = load i64, i64* @ue, align 8 17*9880d681SAndroid Build Coastguard Worker %t1 = sub i64 %t0, %i.0.i35 18*9880d681SAndroid Build Coastguard Worker %t2 = add i64 %t1, 1 19*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb15.i28, label %bb19.i31 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerbb15.i28: 22*9880d681SAndroid Build Coastguard Worker br label %bb19.i31 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerbb19.i31: 25*9880d681SAndroid Build Coastguard Worker %y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ] 26*9880d681SAndroid Build Coastguard Worker br label %bb35.i 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Workerbb35.i: 29*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb37.i, label %bb14.i27 30*9880d681SAndroid Build Coastguard Worker 31*9880d681SAndroid Build Coastguard Workerbb37.i: 32*9880d681SAndroid Build Coastguard Worker %t3 = add i64 %i.0.i35, 1 33*9880d681SAndroid Build Coastguard Worker br label %bb38.i 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Workerbb38.i: 36*9880d681SAndroid Build Coastguard Worker %i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ] 37*9880d681SAndroid Build Coastguard Worker br label %bb35.i 38*9880d681SAndroid Build Coastguard Worker} 39