; LLVM IR from FSmallenburg/EDMD :: Grow (mdgrow)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@stop = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @init()
  %2 = load i32, ptr @stop, align 4, !tbaa !5
  %3 = icmp ne i32 %2, 0
  br i1 %3, label %4, label %5

4:                                                ; preds = %0
  store i32 1, ptr %1, align 4
  br label %13

5:                                                ; preds = %0
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  br label %7

7:                                                ; preds = %11, %5
  %8 = load i32, ptr @stop, align 4, !tbaa !5
  %9 = icmp ne i32 %8, 0
  %10 = xor i1 %9, true
  br i1 %10, label %11, label %12

11:                                               ; preds = %7
  call void @step()
  br label %7, !llvm.loop !9

12:                                               ; preds = %7
  call void @printstuff()
  store i32 0, ptr %1, align 4
  br label %13

13:                                               ; preds = %12, %4
  %14 = load i32, ptr %1, align 4
  ret i32 %14
}

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
declare dso_local void @printstuff() #0

; Function Attrs: nounwind uwtable
declare dso_local void @init() #0

; Function Attrs: nounwind uwtable
declare dso_local void @step() #0

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@stop = external dso_local local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [10 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main() local_unnamed_addr #0 {
  tail call void @init()
  %1 = load i32, ptr @stop, align 4, !tbaa !5
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %2, label %6

2:                                                ; preds = %0
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %4 = load i32, ptr @stop, align 4, !tbaa !5
  %.not12 = icmp eq i32 %4, 0
  br i1 %.not12, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  tail call void @step()
  %5 = load i32, ptr @stop, align 4, !tbaa !5
  %.not1 = icmp eq i32 %5, 0
  br i1 %.not1, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %2
  tail call void @printstuff()
  br label %6

6:                                                ; preds = %0, %._crit_edge
  %.0 = phi i32 [ 0, %._crit_edge ], [ 1, %0 ]
  ret i32 %.0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local void @printstuff() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @init() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @step() local_unnamed_addr #0

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass