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