; LLVM IR from Aeternum-Veritas/Merry :: merry (merry_nreader)

; 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"

@stderr = external global ptr, align 8
@.str.35 = external hidden unnamed_addr constant [51 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

declare i32 @fseek(ptr noundef, i64 noundef, i32 noundef) #1

declare i64 @fread(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local zeroext i8 @merry_read_data(ptr noundef %0, ptr noundef %1, i64 noundef %2, i64 noundef %3) #2 {
  %5 = alloca i8, align 1
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !9
  store i64 %3, ptr %9, align 8, !tbaa !9
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = load i64, ptr %8, align 8, !tbaa !9
  %12 = call i32 @fseek(ptr noundef %10, i64 noundef %11, i32 noundef 0)
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %21, label %14

14:                                               ; preds = %4
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = load i64, ptr %9, align 8, !tbaa !9
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call i64 @fread(ptr noundef %15, i64 noundef 1, i64 noundef %16, ptr noundef %17)
  %19 = load i64, ptr %9, align 8, !tbaa !9
  %20 = icmp ne i64 %18, %19
  br i1 %20, label %21, label %24

21:                                               ; preds = %14, %4
  %22 = load ptr, ptr @stderr, align 8, !tbaa !5
  %23 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %22, ptr noundef @.str.35) #3
  store i8 1, ptr %5, align 1
  br label %25

24:                                               ; preds = %14
  store i8 0, ptr %5, align 1
  br label %25

25:                                               ; preds = %24, %21
  %26 = load i8, ptr %5, align 1
  ret i8 %26
}

attributes #0 = { 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 #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" }
attributes #2 = { 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 #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 = !{!"long", !7, i64 0}


; 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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.35 = external hidden unnamed_addr constant [51 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fseek(ptr nocapture noundef, i64 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind uwtable
define dso_local zeroext range(i8 0, 2) i8 @merry_read_data(ptr nocapture noundef %0, ptr nocapture noundef %1, i64 noundef %2, i64 noundef %3) local_unnamed_addr #1 {
  %5 = tail call i32 @fseek(ptr noundef %0, i64 noundef %2, i32 noundef 0)
  %.not = icmp eq i32 %5, 0
  br i1 %.not, label %6, label %8

6:                                                ; preds = %4
  %7 = tail call i64 @fread(ptr noundef %1, i64 noundef 1, i64 noundef %3, ptr noundef %0)
  %.not6 = icmp eq i64 %7, %3
  br i1 %.not6, label %11, label %8

8:                                                ; preds = %6, %4
  %9 = load ptr, ptr @stderr, align 8, !tbaa !5
  %10 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %9, ptr noundef nonnull @.str.35) #2
  br label %11

11:                                               ; preds = %6, %8
  %.0 = phi i8 [ 1, %8 ], [ 0, %6 ]
  ret i8 %.0
}

attributes #0 = { 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 #1 = { nofree 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 = { cold 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"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass