; LLVM IR from guanzhi/GmSSL :: src (x509_cer)

; 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.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [62 x i8], align 1
@__FUNCTION__.x509_certs_get_cert_by_index = external hidden unnamed_addr constant [29 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: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; 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
declare dso_local i32 @x509_cert_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local i32 @x509_certs_get_cert_by_index(ptr noundef %0, i64 noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) #2 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i64 %1, ptr %8, align 8, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !11
  store ptr %3, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  store i32 0, ptr %12, align 4, !tbaa !11
  %14 = load i32, ptr %9, align 4, !tbaa !11
  %15 = icmp slt i32 %14, 0
  br i1 %15, label %16, label %22

16:                                               ; preds = %5
  br label %17

17:                                               ; preds = %16
  %18 = load ptr, ptr @stderr, align 8, !tbaa !5
  %19 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %18, ptr noundef @.str.3, ptr noundef @.str.4, i32 noundef 1608, ptr noundef @__FUNCTION__.x509_certs_get_cert_by_index) #3
  br label %20

20:                                               ; preds = %17
  br label %21

21:                                               ; preds = %20
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %47

22:                                               ; preds = %5
  br label %23

23:                                               ; preds = %43, %22
  %24 = load i64, ptr %8, align 8, !tbaa !9
  %25 = icmp ne i64 %24, 0
  br i1 %25, label %26, label %44

26:                                               ; preds = %23
  %27 = load ptr, ptr %10, align 8, !tbaa !5
  %28 = load ptr, ptr %11, align 8, !tbaa !5
  %29 = call i32 @x509_cert_from_der(ptr noundef %27, ptr noundef %28, ptr noundef %7, ptr noundef %8)
  %30 = icmp ne i32 %29, 1
  br i1 %30, label %31, label %37

31:                                               ; preds = %26
  br label %32

32:                                               ; preds = %31
  %33 = load ptr, ptr @stderr, align 8, !tbaa !5
  %34 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %33, ptr noundef @.str.3, ptr noundef @.str.4, i32 noundef 1613, ptr noundef @__FUNCTION__.x509_certs_get_cert_by_index) #3
  br label %35

35:                                               ; preds = %32
  br label %36

36:                                               ; preds = %35
  store i32 -1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %47

37:                                               ; preds = %26
  %38 = load i32, ptr %12, align 4, !tbaa !11
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %12, align 4, !tbaa !11
  %40 = load i32, ptr %9, align 4, !tbaa !11
  %41 = icmp eq i32 %38, %40
  br i1 %41, label %42, label %43

42:                                               ; preds = %37
  store i32 1, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %47

43:                                               ; preds = %37
  br label %23, !llvm.loop !13

44:                                               ; preds = %23
  %45 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr null, ptr %45, align 8, !tbaa !5
  %46 = load ptr, ptr %11, align 8, !tbaa !5
  store i64 0, ptr %46, align 8, !tbaa !9
  store i32 0, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %47

47:                                               ; preds = %44, %42, %36, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  %48 = load i32, ptr %6, align 4
  ret i32 %48
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str.3 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [62 x i8], align 1
@__FUNCTION__.x509_certs_get_cert_by_index = external hidden unnamed_addr constant [29 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: nounwind uwtable
declare dso_local i32 @x509_cert_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @x509_certs_get_cert_by_index(ptr noundef %0, i64 noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  %8 = icmp slt i32 %2, 0
  br i1 %8, label %9, label %.preheader

.preheader:                                       ; preds = %5
  %.not9 = icmp eq i64 %1, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

9:                                                ; preds = %5
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, i32 noundef 1608, ptr noundef nonnull @__FUNCTION__.x509_certs_get_cert_by_index) #2
  br label %.loopexit

thread-pre-split:                                 ; preds = %17
  %12 = add nuw nsw i32 %.010, 1
  %.pr = load i64, ptr %7, align 8, !tbaa !9
  %.not = icmp eq i64 %.pr, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %thread-pre-split
  %.010 = phi i32 [ %12, %thread-pre-split ], [ 0, %.preheader ]
  %13 = call i32 @x509_cert_from_der(ptr noundef %3, ptr noundef %4, ptr noundef nonnull %6, ptr noundef nonnull %7)
  %.not8 = icmp eq i32 %13, 1
  br i1 %.not8, label %17, label %14

14:                                               ; preds = %.lr.ph
  %15 = load ptr, ptr @stderr, align 8, !tbaa !5
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %15, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, i32 noundef 1613, ptr noundef nonnull @__FUNCTION__.x509_certs_get_cert_by_index) #2
  br label %.loopexit

17:                                               ; preds = %.lr.ph
  %18 = icmp eq i32 %.010, %2
  br i1 %18, label %.loopexit, label %thread-pre-split, !llvm.loop !11

._crit_edge:                                      ; preds = %thread-pre-split, %.preheader
  store ptr null, ptr %3, align 8, !tbaa !5
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %.loopexit

.loopexit:                                        ; preds = %17, %._crit_edge, %14, %9
  %.07 = phi i32 [ -1, %9 ], [ -1, %14 ], [ 0, %._crit_edge ], [ 1, %17 ]
  ret i32 %.07
}

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 = { 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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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