; LLVM IR from guanzhi/GmSSL :: src (sm2_key)

; 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 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [61 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [15 x i8], align 1
@__FUNCTION__.sm2_private_key_from_pem = external hidden unnamed_addr constant [25 x i8], align 1

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

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

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_from_der(ptr noundef, ptr noundef, ptr noundef) #2

declare i32 @pem_read(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local i32 @sm2_private_key_from_pem(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca [512 x i8], align 16
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca i32, align 4
  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 512, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %10 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  store ptr %10, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds [512 x i8], ptr %6, i64 0, i64 0
  %13 = call i32 @pem_read(ptr noundef %11, ptr noundef @.str.9, ptr noundef %12, ptr noundef %8, i64 noundef 512)
  %14 = icmp ne i32 %13, 1
  br i1 %14, label %15, label %21

15:                                               ; preds = %2
  br label %16

16:                                               ; preds = %15
  %17 = load ptr, ptr @stderr, align 8, !tbaa !5
  %18 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 466, ptr noundef @__FUNCTION__.sm2_private_key_from_pem) #4
  br label %19

19:                                               ; preds = %16
  br label %20

20:                                               ; preds = %19
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %35

21:                                               ; preds = %2
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = call i32 @sm2_private_key_from_der(ptr noundef %22, ptr noundef %7, ptr noundef %8)
  %24 = icmp ne i32 %23, 1
  br i1 %24, label %28, label %25

25:                                               ; preds = %21
  %26 = load i64, ptr %8, align 8, !tbaa !9
  %27 = icmp ugt i64 %26, 0
  br i1 %27, label %28, label %34

28:                                               ; preds = %25, %21
  br label %29

29:                                               ; preds = %28
  %30 = load ptr, ptr @stderr, align 8, !tbaa !5
  %31 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %30, ptr noundef @.str, ptr noundef @.str.1, i32 noundef 471, ptr noundef @__FUNCTION__.sm2_private_key_from_pem) #4
  br label %32

32:                                               ; preds = %29
  br label %33

33:                                               ; preds = %32
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %35

34:                                               ; preds = %25
  store i32 1, ptr %3, align 4
  store i32 1, ptr %9, align 4
  br label %35

35:                                               ; preds = %34, %33, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr %6) #4
  %36 = load i32, ptr %3, align 4
  ret i32 %36
}

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = !{!"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}


; 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 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [61 x i8], align 1
@.str.9 = external hidden unnamed_addr constant [15 x i8], align 1
@__FUNCTION__.sm2_private_key_from_pem = external hidden unnamed_addr constant [25 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @sm2_private_key_from_der(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

declare i32 @pem_read(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 2) i32 @sm2_private_key_from_pem(ptr noundef %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = alloca [512 x i8], align 16
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 512, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #4
  store ptr %3, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #4
  %6 = call i32 @pem_read(ptr noundef %1, ptr noundef nonnull @.str.9, ptr noundef nonnull %3, ptr noundef nonnull %5, i64 noundef 512) #4
  %.not = icmp eq i32 %6, 1
  br i1 %.not, label %7, label %.sink.split

7:                                                ; preds = %2
  %8 = call i32 @sm2_private_key_from_der(ptr noundef %0, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %9 = icmp ne i32 %8, 1
  %10 = load i64, ptr %5, align 8
  %11 = icmp ne i64 %10, 0
  %or.cond = select i1 %9, i1 true, i1 %11
  br i1 %or.cond, label %.sink.split, label %14

.sink.split:                                      ; preds = %7, %2
  %.sink3 = phi i32 [ 466, %2 ], [ 471, %7 ]
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef %.sink3, ptr noundef nonnull @__FUNCTION__.sm2_private_key_from_pem) #5
  br label %14

14:                                               ; preds = %.sink.split, %7
  %.0 = phi i32 [ 1, %7 ], [ -1, %.sink.split ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 512, ptr nonnull %3) #4
  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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = { 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"}


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