; LLVM IR from dbry/wavpack-stream :: cli (utils)

; 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"

; 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
define dso_local i32 @DoReadFile(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %10 = load ptr, ptr %8, align 8, !tbaa !5
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %36, %4
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %37

14:                                               ; preds = %11
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load ptr, ptr %8, align 8, !tbaa !5
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = zext i32 %17 to i64
  %19 = getelementptr inbounds i8, ptr %15, i64 %18
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = zext i32 %20 to i64
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = call i64 @fread(ptr noundef %19, i64 noundef 1, i64 noundef %21, ptr noundef %22)
  %24 = trunc i64 %23 to i32
  store i32 %24, ptr %9, align 4, !tbaa !9
  %25 = load i32, ptr %9, align 4, !tbaa !9
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %35

27:                                               ; preds = %14
  %28 = load i32, ptr %9, align 4, !tbaa !9
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = add i32 %30, %28
  store i32 %31, ptr %29, align 4, !tbaa !9
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = sub i32 %33, %32
  store i32 %34, ptr %7, align 4, !tbaa !9
  br label %36

35:                                               ; preds = %14
  br label %37

36:                                               ; preds = %27
  br label %11, !llvm.loop !11

37:                                               ; preds = %35, %11
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = call i32 @ferror(ptr noundef %38) #4
  %40 = icmp ne i32 %39, 0
  %41 = xor i1 %40, true
  %42 = zext i1 %41 to i32
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  ret i32 %42
}

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

; Function Attrs: nounwind
declare i32 @ferror(ptr noundef) #3

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 = { "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 "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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"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"

; Function Attrs: nofree nounwind uwtable
define dso_local range(i32 0, 2) i32 @DoReadFile(ptr nocapture noundef %0, ptr nocapture noundef %1, i32 noundef %2, ptr nocapture noundef %3) local_unnamed_addr #0 {
  store i32 0, ptr %3, align 4, !tbaa !5
  %.not14 = icmp eq i32 %2, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %11
  %5 = phi i32 [ %13, %11 ], [ 0, %4 ]
  %.015 = phi i32 [ %14, %11 ], [ %2, %4 ]
  %6 = zext i32 %5 to i64
  %7 = getelementptr inbounds i8, ptr %1, i64 %6
  %8 = zext i32 %.015 to i64
  %9 = tail call i64 @fread(ptr noundef %7, i64 noundef 1, i64 noundef %8, ptr noundef %0)
  %10 = trunc i64 %9 to i32
  %.not12 = icmp eq i32 %10, 0
  br i1 %.not12, label %._crit_edge, label %11

11:                                               ; preds = %.lr.ph
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = add i32 %12, %10
  store i32 %13, ptr %3, align 4, !tbaa !5
  %14 = sub i32 %.015, %10
  %.not = icmp eq i32 %14, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %11, %.lr.ph, %4
  %15 = tail call i32 @ferror(ptr noundef %0) #3
  %.not13 = icmp eq i32 %15, 0
  %16 = zext i1 %.not13 to i32
  ret i32 %16
}

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind memory(read)
declare noundef i32 @ferror(ptr nocapture noundef) local_unnamed_addr #2

attributes #0 = { 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 #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" }
attributes #2 = { nofree nounwind memory(read) "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 = !{!"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: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass