; LLVM IR from aap/pdp6 :: test (dtconv)

; 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"

@datbuf = external dso_local global [73984 x i64], align 16
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local ptr @mustopen(ptr noundef, ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local void @prerecord(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca [922512 x i8], align 16
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 922512, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store ptr @datbuf, ptr %6, align 8, !tbaa !5
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %24, %0
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 578
  br i1 %9, label %10, label %27

10:                                               ; preds = %7
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %20, %10
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp slt i32 %12, 128
  br i1 %13, label %14, label %23

14:                                               ; preds = %11
  %15 = load i32, ptr %4, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = call i64 @fw(i32 noundef %15, i32 noundef %16)
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds i64, ptr %18, i32 1
  store ptr %19, ptr %6, align 8, !tbaa !5
  store i64 %17, ptr %18, align 8, !tbaa !11
  br label %20

20:                                               ; preds = %14
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %5, align 4, !tbaa !9
  br label %11, !llvm.loop !13

23:                                               ; preds = %11
  br label %24

24:                                               ; preds = %23
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %4, align 4, !tbaa !9
  br label %7, !llvm.loop !15

27:                                               ; preds = %7
  %28 = getelementptr inbounds [922512 x i8], ptr %3, i64 0, i64 0
  call void @prerecord(ptr noundef %28)
  %29 = call ptr @mustopen(ptr noundef @.str.1, ptr noundef @.str.2)
  store ptr %29, ptr %2, align 8, !tbaa !5
  %30 = getelementptr inbounds [922512 x i8], ptr %3, i64 0, i64 0
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = call i64 @fwrite(ptr noundef %30, i64 noundef 1, i64 noundef 922512, ptr noundef %31)
  %33 = load ptr, ptr %2, align 8, !tbaa !5
  %34 = call i32 @fclose(ptr noundef %33)
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 922512, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

declare i64 @fw(i32 noundef, i32 noundef) #2

declare i64 @fwrite(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #2

declare i32 @fclose(ptr noundef) #2

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

@datbuf = external dso_local local_unnamed_addr global [73984 x i64], align 16
@.str.1 = external hidden unnamed_addr constant [8 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1

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

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca [922512 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 922512, ptr nonnull %1) #4
  br label %.preheader

.preheader:                                       ; preds = %0, %6
  %.013 = phi ptr [ @datbuf, %0 ], [ %4, %6 ]
  %.0912 = phi i32 [ 0, %0 ], [ %7, %6 ]
  br label %2

2:                                                ; preds = %.preheader, %2
  %.111 = phi ptr [ %.013, %.preheader ], [ %4, %2 ]
  %.0810 = phi i32 [ 0, %.preheader ], [ %5, %2 ]
  %3 = tail call i64 @fw(i32 noundef %.0912, i32 noundef %.0810) #4
  %4 = getelementptr inbounds i8, ptr %.111, i64 8
  store i64 %3, ptr %.111, align 8, !tbaa !5
  %5 = add nuw nsw i32 %.0810, 1
  %exitcond.not = icmp eq i32 %5, 128
  br i1 %exitcond.not, label %6, label %2, !llvm.loop !9

6:                                                ; preds = %2
  %7 = add nuw nsw i32 %.0912, 1
  %exitcond14.not = icmp eq i32 %7, 578
  br i1 %exitcond14.not, label %8, label %.preheader, !llvm.loop !11

8:                                                ; preds = %6
  call void @prerecord(ptr noundef nonnull %1)
  %9 = call ptr @mustopen(ptr noundef nonnull @.str.1, ptr noundef nonnull @.str.2)
  %10 = call i64 @fwrite(ptr noundef nonnull %1, i64 noundef 1, i64 noundef 922512, ptr noundef %9)
  %11 = call i32 @fclose(ptr noundef %9)
  call void @llvm.lifetime.end.p0(i64 922512, ptr nonnull %1) #4
  ret i32 0
}

declare i64 @fw(i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i64 @fwrite(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #3

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { 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" }
attributes #4 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass