; LLVM IR from openssl/openssl :: demos/digest (EVP_MD_stdin)

; 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"

@stdin = external global ptr, align 8
@stderr = external global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 1, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %4 = load ptr, ptr @stdin, align 8, !tbaa !9
  %5 = call i32 @fileno(ptr noundef %4) #4
  %6 = call ptr @BIO_new_fd(i32 noundef %5, i32 noundef 1)
  store ptr %6, ptr %3, align 8, !tbaa !9
  %7 = load ptr, ptr %3, align 8, !tbaa !9
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %17

9:                                                ; preds = %0
  %10 = load ptr, ptr %3, align 8, !tbaa !9
  %11 = call i32 @demonstrate_digest(ptr noundef %10)
  %12 = icmp ne i32 %11, 0
  %13 = zext i1 %12 to i64
  %14 = select i1 %12, i32 0, i32 1
  store i32 %14, ptr %2, align 4, !tbaa !5
  %15 = load ptr, ptr %3, align 8, !tbaa !9
  %16 = call i32 @BIO_free(ptr noundef %15)
  br label %17

17:                                               ; preds = %9, %0
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = icmp ne i32 %18, 0
  br i1 %19, label %20, label %22

20:                                               ; preds = %17
  %21 = load ptr, ptr @stderr, align 8, !tbaa !9
  call void @ERR_print_errors_fp(ptr noundef %21)
  br label %22

22:                                               ; preds = %20, %17
  %23 = load i32, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  ret i32 %23
}

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

declare ptr @BIO_new_fd(i32 noundef, i32 noundef) #2

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

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

declare i32 @BIO_free(ptr noundef) #2

declare void @ERR_print_errors_fp(ptr noundef) #2

; 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 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

@stdin = external local_unnamed_addr global ptr, align 8
@stderr = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main() local_unnamed_addr #0 {
  %1 = load ptr, ptr @stdin, align 8, !tbaa !5
  %2 = tail call i32 @fileno(ptr noundef %1) #3
  %3 = tail call ptr @BIO_new_fd(i32 noundef %2, i32 noundef 1) #3
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %.thread, label %4

4:                                                ; preds = %0
  %5 = tail call i32 @demonstrate_digest(ptr noundef nonnull %3)
  %.not5.not = icmp eq i32 %5, 0
  %6 = tail call i32 @BIO_free(ptr noundef nonnull %3) #3
  br i1 %.not5.not, label %.thread, label %8

.thread:                                          ; preds = %0, %4
  %7 = load ptr, ptr @stderr, align 8, !tbaa !5
  tail call void @ERR_print_errors_fp(ptr noundef %7) #3
  br label %8

8:                                                ; preds = %.thread, %4
  %.010 = phi i32 [ 1, %.thread ], [ 0, %4 ]
  ret i32 %.010
}

declare ptr @BIO_new_fd(i32 noundef, i32 noundef) local_unnamed_addr #1

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

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

declare i32 @BIO_free(ptr noundef) local_unnamed_addr #1

declare void @ERR_print_errors_fp(ptr noundef) local_unnamed_addr #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 = { "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 }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,SROAPass,TailCallElimPass