1; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s 2; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s 3 4; This loop has no preheader, multiple backedges, etc., but ScalarEvolution 5; should still be able to analyze it. 6 7; CHECK: %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] 8; CHECK-NEXT: --> {5,+,1}<%loop> 9 10define void @foo(i1 %p, i1 %q, i1 %s, i1 %u) { 11entry: 12 br i1 %p, label %loop, label %alt 13 14alt: 15 br i1 %s, label %loop, label %exit 16 17loop: 18 %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] 19 %i.next = add i64 %i, 1 20 br i1 %q, label %loop.a, label %loop.b 21 22loop.a: 23 br label %loop 24 25loop.b: 26 br i1 %u, label %loop, label %exit 27 28exit: 29 ret void 30} 31