; LLVM IR from albertobsd/keyhunt :: hash/sha256.ll (Z11sha256_filePKcPh)

; 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"

%class.CSHA256 = type { [8 x i32], [64 x i8], i64 }

@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1

; 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: mustprogress uwtable
declare dso_local void @_ZN7CSHA2565WriteEPKhm(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef, i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7CSHA2568FinalizeEPh(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z11sha256_filePKcPh(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %class.CSHA256, align 8
  %9 = alloca [8192 x i8], align 16
  %10 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call noalias ptr @fopen(ptr noundef %11, ptr noundef @.str.1)
  store ptr %12, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %15, label %18

15:                                               ; preds = %2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, ptr noundef %16)
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %31

18:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 104, ptr %8) #3
  call void @_ZN7CSHA256C1Ev(ptr noundef nonnull align 8 dereferenceable(104) %8)
  call void @llvm.lifetime.start.p0(i64 8192, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  br label %19

19:                                               ; preds = %24, %18
  %20 = getelementptr inbounds [8192 x i8], ptr %9, i64 0, i64 0
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = call i64 @fread(ptr noundef %20, i64 noundef 1, i64 noundef 8192, ptr noundef %21)
  store i64 %22, ptr %10, align 8, !tbaa !9
  %23 = icmp ugt i64 %22, 0
  br i1 %23, label %24, label %27

24:                                               ; preds = %19
  %25 = getelementptr inbounds [8192 x i8], ptr %9, i64 0, i64 0
  %26 = load i64, ptr %10, align 8, !tbaa !9
  call void @_ZN7CSHA2565WriteEPKhm(ptr noundef nonnull align 8 dereferenceable(104) %8, ptr noundef %25, i64 noundef %26)
  br label %19, !llvm.loop !11

27:                                               ; preds = %19
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZN7CSHA2568FinalizeEPh(ptr noundef nonnull align 8 dereferenceable(104) %8, ptr noundef %28)
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = call i32 @fclose(ptr noundef %29)
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8192, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 104, ptr %8) #3
  br label %31

31:                                               ; preds = %27, %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %32 = load i1, ptr %3, align 1
  ret i1 %32
}

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #2

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

declare i32 @fclose(ptr noundef) #2

declare void @_ZN7CSHA256C1Ev(ptr)

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 }

!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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !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"

%class.CSHA256 = type { [8 x i32], [64 x i8], i64 }

@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [25 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7CSHA2565WriteEPKhm(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef, i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7CSHA2568FinalizeEPh(ptr noundef nonnull align 8 dereferenceable(104), ptr noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z11sha256_filePKcPh(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca %class.CSHA256, align 8
  %4 = alloca [8192 x i8], align 16
  %5 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str.1)
  %6 = icmp ne ptr %5, null
  br i1 %6, label %9, label %7

7:                                                ; preds = %2
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, ptr noundef %0)
  br label %14

9:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 104, ptr nonnull %3) #3
  call void @_ZN7CSHA256C1Ev(ptr noundef nonnull align 8 dereferenceable(104) %3)
  call void @llvm.lifetime.start.p0(i64 8192, ptr nonnull %4) #3
  %10 = call i64 @fread(ptr noundef nonnull %4, i64 noundef 1, i64 noundef 8192, ptr noundef nonnull %5)
  %.not9 = icmp eq i64 %10, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %9, %.lr.ph
  %11 = phi i64 [ %12, %.lr.ph ], [ %10, %9 ]
  call void @_ZN7CSHA2565WriteEPKhm(ptr noundef nonnull align 8 dereferenceable(104) %3, ptr noundef nonnull %4, i64 noundef %11)
  %12 = call i64 @fread(ptr noundef nonnull %4, i64 noundef 1, i64 noundef 8192, ptr noundef nonnull %5)
  %.not = icmp eq i64 %12, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %9
  call void @_ZN7CSHA2568FinalizeEPh(ptr noundef nonnull align 8 dereferenceable(104) %3, ptr noundef %1)
  %13 = call i32 @fclose(ptr noundef nonnull %5)
  call void @llvm.lifetime.end.p0(i64 8192, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 104, ptr nonnull %3) #3
  br label %14

14:                                               ; preds = %._crit_edge, %7
  ret i1 %6
}

; 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 i32 @printf(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

declare void @_ZN7CSHA256C1Ev(ptr) local_unnamed_addr

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass