; LLVM IR from freakout42/macrocalc :: mc/nro (nrotxt)

; 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"

%struct.docctl = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i8, i8, i32, i32, i32, [26 x i32] }

@dc = external global %struct.docctl, align 4
@pout = external global ptr, align 8

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @prchar(i32 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @skip(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %4 = load i32, ptr getelementptr inbounds (%struct.docctl, ptr @dc, i32 0, i32 14), align 4, !tbaa !9
  %5 = icmp eq i32 %4, 1
  br i1 %5, label %6, label %20

6:                                                ; preds = %1
  %7 = load i32, ptr %2, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %9, label %20

9:                                                ; preds = %6
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %16, %9
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %14, label %19

14:                                               ; preds = %10
  %15 = load ptr, ptr @pout, align 8, !tbaa !11
  call void @prchar(i32 noundef 10, ptr noundef %15)
  br label %16

16:                                               ; preds = %14
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %3, align 4, !tbaa !5
  br label %10, !llvm.loop !13

19:                                               ; preds = %10
  br label %20

20:                                               ; preds = %19, %6, %1
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nounwind }

!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 = !{!10, !6, i64 52}
!10 = !{!"docctl", !6, i64 0, !6, i64 4, !6, i64 8, !6, i64 12, !6, i64 16, !6, i64 20, !6, i64 24, !6, i64 28, !6, i64 32, !6, i64 36, !6, i64 40, !6, i64 44, !7, i64 48, !7, i64 49, !6, i64 52, !6, i64 56, !6, i64 60, !7, i64 64}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%struct.docctl = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i8, i8, i32, i32, i32, [26 x i32] }

@dc = external local_unnamed_addr global %struct.docctl, align 4
@pout = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
declare dso_local void @prchar(i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @skip(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr getelementptr inbounds (i8, ptr @dc, i64 52), align 4, !tbaa !5
  %3 = icmp eq i32 %2, 1
  %4 = icmp sgt i32 %0, 0
  %or.cond = and i1 %4, %3
  br i1 %or.cond, label %.preheader, label %.loopexit

.preheader:                                       ; preds = %1, %.preheader
  %.06 = phi i32 [ %6, %.preheader ], [ 0, %1 ]
  %5 = load ptr, ptr @pout, align 8, !tbaa !10
  tail call void @prchar(i32 noundef 10, ptr noundef %5)
  %6 = add nuw nsw i32 %.06, 1
  %exitcond.not = icmp eq i32 %6, %0
  br i1 %exitcond.not, label %.loopexit, label %.preheader, !llvm.loop !12

.loopexit:                                        ; preds = %.preheader, %1
  ret void
}

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" }

!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, !7, i64 52}
!6 = !{!"docctl", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12, !7, i64 16, !7, i64 20, !7, i64 24, !7, i64 28, !7, i64 32, !7, i64 36, !7, i64 40, !7, i64 44, !8, i64 48, !8, i64 49, !7, i64 52, !7, i64 56, !7, i64 60, !8, i64 64}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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