; LLVM IR from ARMmbed/mbed-crypto :: library (entropy_poll)

; 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"

@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @mbedtls_platform_entropy_poll(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  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 ptr %3, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  store i32 -110, ptr %12, align 4, !tbaa !11
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  %16 = load i64, ptr %8, align 8, !tbaa !9
  %17 = call i32 @getrandom_wrapper(ptr noundef %15, i64 noundef %16, i32 noundef 0)
  store i32 %17, ptr %12, align 4, !tbaa !11
  %18 = load i32, ptr %12, align 4, !tbaa !11
  %19 = icmp sge i32 %18, 0
  br i1 %19, label %20, label %24

20:                                               ; preds = %4
  %21 = load i32, ptr %12, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = load ptr, ptr %9, align 8, !tbaa !5
  store i64 %22, ptr %23, align 8, !tbaa !9
  store i32 0, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %52

24:                                               ; preds = %4
  %25 = call ptr @__errno_location() #5
  %26 = load i32, ptr %25, align 4, !tbaa !11
  %27 = icmp ne i32 %26, 38
  br i1 %27, label %28, label %29

28:                                               ; preds = %24
  store i32 -60, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %52

29:                                               ; preds = %24
  br label %30

30:                                               ; preds = %29
  %31 = load ptr, ptr %9, align 8, !tbaa !5
  store i64 0, ptr %31, align 8, !tbaa !9
  %32 = call noalias ptr @fopen(ptr noundef @.str, ptr noundef @.str.1)
  store ptr %32, ptr %10, align 8, !tbaa !5
  %33 = load ptr, ptr %10, align 8, !tbaa !5
  %34 = icmp eq ptr %33, null
  br i1 %34, label %35, label %36

35:                                               ; preds = %30
  store i32 -60, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %52

36:                                               ; preds = %30
  %37 = load ptr, ptr %7, align 8, !tbaa !5
  %38 = load i64, ptr %8, align 8, !tbaa !9
  %39 = load ptr, ptr %10, align 8, !tbaa !5
  %40 = call i64 @fread(ptr noundef %37, i64 noundef 1, i64 noundef %38, ptr noundef %39)
  store i64 %40, ptr %11, align 8, !tbaa !9
  %41 = load i64, ptr %11, align 8, !tbaa !9
  %42 = load i64, ptr %8, align 8, !tbaa !9
  %43 = icmp ne i64 %41, %42
  br i1 %43, label %44, label %47

44:                                               ; preds = %36
  %45 = load ptr, ptr %10, align 8, !tbaa !5
  %46 = call i32 @fclose(ptr noundef %45)
  store i32 -60, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %52

47:                                               ; preds = %36
  %48 = load ptr, ptr %10, align 8, !tbaa !5
  %49 = call i32 @fclose(ptr noundef %48)
  %50 = load i64, ptr %8, align 8, !tbaa !9
  %51 = load ptr, ptr %9, align 8, !tbaa !5
  store i64 %50, ptr %51, align 8, !tbaa !9
  store i32 0, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %52

52:                                               ; preds = %47, %44, %35, %28, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  %53 = load i32, ptr %5, align 4
  ret i32 %53
}

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

; Function Attrs: nounwind uwtable
declare hidden i32 @getrandom_wrapper(ptr noundef, i64 noundef, i32 noundef) #0

; Function Attrs: nounwind willreturn memory(none)
declare ptr @__errno_location() #2

declare noalias ptr @fopen(ptr noundef, ptr noundef) #3

declare i64 @fread(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #3

declare i32 @fclose(ptr noundef) #3

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

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 = { nounwind willreturn memory(none) "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 = { "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 }
attributes #5 = { nounwind willreturn memory(none) }

!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}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !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"

@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -60, 1) i32 @mbedtls_platform_entropy_poll(ptr nocapture noundef readnone %0, ptr noundef %1, i64 noundef %2, ptr nocapture noundef writeonly %3) local_unnamed_addr #0 {
  %5 = tail call i32 @getrandom_wrapper(ptr noundef %1, i64 noundef %2, i32 noundef 0)
  %6 = icmp sgt i32 %5, -1
  br i1 %6, label %7, label %9

7:                                                ; preds = %4
  %8 = zext nneg i32 %5 to i64
  br label %.sink.split

9:                                                ; preds = %4
  %10 = tail call ptr @__errno_location() #3
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not = icmp eq i32 %11, 38
  br i1 %.not, label %12, label %18

12:                                               ; preds = %9
  store i64 0, ptr %3, align 8, !tbaa !9
  %13 = tail call noalias ptr @fopen(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1)
  %14 = icmp eq ptr %13, null
  br i1 %14, label %18, label %15

15:                                               ; preds = %12
  %16 = tail call i64 @fread(ptr noundef %1, i64 noundef 1, i64 noundef %2, ptr noundef nonnull %13)
  %.not20 = icmp eq i64 %16, %2
  %17 = tail call i32 @fclose(ptr noundef nonnull %13)
  br i1 %.not20, label %.sink.split, label %18

.sink.split:                                      ; preds = %15, %7
  %.sink = phi i64 [ %8, %7 ], [ %2, %15 ]
  store i64 %.sink, ptr %3, align 8, !tbaa !9
  br label %18

18:                                               ; preds = %.sink.split, %15, %12, %9
  %.0 = phi i32 [ -60, %9 ], [ -60, %12 ], [ -60, %15 ], [ 0, %.sink.split ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare hidden i32 @getrandom_wrapper(ptr noundef, i64 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
declare ptr @__errno_location() local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #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 = { mustprogress nofree nosync nounwind willreturn memory(none) "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 "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 willreturn memory(none) }

!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, !10, i64 0}
!10 = !{!"long", !7, i64 0}


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