| ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s |
| |
| declare void @foo() |
| |
| define void @test1() nounwind { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %if.end, %entry |
| %i.0 = phi i32 [ 2, %entry ], [ %dec, %if.end ] |
| switch i32 %i.0, label %if.end [ |
| i32 0, label %for.end |
| i32 1, label %if.then |
| ] |
| |
| if.then: ; preds = %for.cond |
| tail call void @foo() |
| br label %if.end |
| |
| if.end: ; preds = %for.cond, %if.then |
| %dec = add nsw i32 %i.0, -1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| ret void |
| |
| ; CHECK-LABEL: @test1 |
| ; CHECK: Loop %for.cond: backedge-taken count is 2 |
| ; CHECK: Loop %for.cond: max backedge-taken count is 2 |
| } |
