| ; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s |
| ; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s |
| |
| ; This loop has no preheader, multiple backedges, etc., but ScalarEvolution |
| ; should still be able to analyze it. |
| |
| ; CHECK: %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] |
| ; CHECK-NEXT: --> {5,+,1}<%loop> |
| |
| define void @foo(i1 %p, i1 %q, i1 %s, i1 %u) { |
| entry: |
| br i1 %p, label %loop, label %alt |
| |
| alt: |
| br i1 %s, label %loop, label %exit |
| |
| loop: |
| %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ] |
| %i.next = add i64 %i, 1 |
| br i1 %q, label %loop.a, label %loop.b |
| |
| loop.a: |
| br label %loop |
| |
| loop.b: |
| br i1 %u, label %loop, label %exit |
| |
| exit: |
| ret void |
| } |