1*9880d681SAndroid Build Coastguard Worker; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; This loop has no preheader, multiple backedges, etc., but ScalarEvolution 4*9880d681SAndroid Build Coastguard Worker; should still be able to analyze it. 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; CHECK: %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] 7*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: --> {5,+,1}<%loop> 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine void @foo(i1 %p, i1 %q, i1 %s, i1 %u) { 10*9880d681SAndroid Build Coastguard Workerentry: 11*9880d681SAndroid Build Coastguard Worker br i1 %p, label %loop, label %alt 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workeralt: 14*9880d681SAndroid Build Coastguard Worker br i1 %s, label %loop, label %exit 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Workerloop: 17*9880d681SAndroid Build Coastguard Worker %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] 18*9880d681SAndroid Build Coastguard Worker %i.next = add i64 %i, 1 19*9880d681SAndroid Build Coastguard Worker br i1 %q, label %loop.a, label %loop.b 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerloop.a: 22*9880d681SAndroid Build Coastguard Worker br label %loop 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerloop.b: 25*9880d681SAndroid Build Coastguard Worker br i1 %u, label %loop, label %exit 26*9880d681SAndroid Build Coastguard Worker 27*9880d681SAndroid Build Coastguard Workerexit: 28*9880d681SAndroid Build Coastguard Worker ret void 29*9880d681SAndroid Build Coastguard Worker} 30