; 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_last = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @x509_cert_from_der(ptr noundef, ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @x509_certs_get_last(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  %10 = load i64, ptr %7, align 8, !tbaa !9
  %11 = icmp eq i64 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %4
  store i32 0, ptr %5, align 4
  br label %29

13:                                               ; preds = %4
  br label %14

14:                                               ; preds = %27, %13
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %16 = icmp ne i64 %15, 0
  br i1 %16, label %17, label %28

17:                                               ; preds = %14
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = load ptr, ptr %9, align 8, !tbaa !5
  %20 = call i32 @x509_cert_from_der(ptr noundef %18, ptr noundef %19, ptr noundef %6, ptr noundef %7)
  %21 = icmp ne i32 %20, 1
  br i1 %21, label %22, label %27

22:                                               ; preds = %17
  br label %23

23:                                               ; preds = %22
  %24 = load ptr, ptr @stderr, align 8, !tbaa !5
  %25 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %24, ptr noundef @.str.3, ptr noundef @.str.4, i32 noundef 1632, ptr noundef @__FUNCTION__.x509_certs_get_last) #2
  br label %26

26:                                               ; preds = %23
  store i32 -1, ptr %5, align 4
  br label %29

27:                                               ; preds = %17
  br label %14, !llvm.loop !11

28:                                               ; preds = %14
  store i32 1, ptr %5, align 4
  br label %29

29:                                               ; preds = %28, %26, %12
  %30 = load i32, ptr %5, align 4
  ret i32 %30
}

attributes #0 = { 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 = { 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"}


; 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_last = external hidden unnamed_addr constant [20 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_last(ptr noundef %0, i64 noundef %1, ptr noundef %2, ptr noundef %3) local_unnamed_addr #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  %7 = icmp eq i64 %1, 0
  br i1 %7, label %.loopexit, label %.preheader

thread-pre-split:                                 ; preds = %.preheader
  %.pr = load i64, ptr %6, align 8, !tbaa !9
  %.not = icmp eq i64 %.pr, 0
  br i1 %.not, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %4, %thread-pre-split
  %8 = call i32 @x509_cert_from_der(ptr noundef %2, ptr noundef %3, ptr noundef nonnull %5, ptr noundef nonnull %6)
  %.not2 = icmp eq i32 %8, 1
  br i1 %.not2, label %thread-pre-split, label %9, !llvm.loop !11

9:                                                ; preds = %.preheader
  %10 = load ptr, ptr @stderr, align 8, !tbaa !5
  %11 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %10, ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, i32 noundef 1632, ptr noundef nonnull @__FUNCTION__.x509_certs_get_last) #2
  br label %.loopexit

.loopexit:                                        ; preds = %thread-pre-split, %4, %9
  %.0 = phi i32 [ -1, %9 ], [ 0, %4 ], [ 1, %thread-pre-split ]
  ret i32 %.0
}

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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass