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

; 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"

%struct.hmac_ctx_st = type { ptr, %struct.DIGEST_CTX, %struct.DIGEST_CTX, %struct.DIGEST_CTX }
%struct.DIGEST_CTX = type { %union.anon, ptr }
%union.anon = type { %struct.SM3_CTX }
%struct.SM3_CTX = type { [8 x i32], i64, [64 x i8], i64 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @hmac_init(ptr noundef, ptr noundef, ptr noundef, i64 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 nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; 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 @hmac_update(ptr noundef, ptr noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @hmac_finish(ptr noundef, ptr noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @hmac(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, ptr noundef %5, ptr noundef %6) #0 {
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i64, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  %13 = alloca ptr, align 8
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca %struct.hmac_ctx_st, align 8
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store i64 %2, ptr %10, align 8, !tbaa !9
  store ptr %3, ptr %11, align 8, !tbaa !5
  store i64 %4, ptr %12, align 8, !tbaa !9
  store ptr %5, ptr %13, align 8, !tbaa !5
  store ptr %6, ptr %14, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #3
  store i32 0, ptr %15, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 368, ptr %16) #3
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = load ptr, ptr %9, align 8, !tbaa !5
  %19 = load i64, ptr %10, align 8, !tbaa !9
  %20 = call i32 @hmac_init(ptr noundef %16, ptr noundef %17, ptr noundef %18, i64 noundef %19)
  %21 = icmp ne i32 %20, 1
  br i1 %21, label %32, label %22

22:                                               ; preds = %7
  %23 = load ptr, ptr %11, align 8, !tbaa !5
  %24 = load i64, ptr %12, align 8, !tbaa !9
  %25 = call i32 @hmac_update(ptr noundef %16, ptr noundef %23, i64 noundef %24)
  %26 = icmp ne i32 %25, 1
  br i1 %26, label %32, label %27

27:                                               ; preds = %22
  %28 = load ptr, ptr %13, align 8, !tbaa !5
  %29 = load ptr, ptr %14, align 8, !tbaa !5
  %30 = call i32 @hmac_finish(ptr noundef %16, ptr noundef %28, ptr noundef %29)
  %31 = icmp ne i32 %30, 1
  br i1 %31, label %32, label %33

32:                                               ; preds = %27, %22, %7
  br label %34

33:                                               ; preds = %27
  store i32 1, ptr %15, align 4, !tbaa !11
  br label %34

34:                                               ; preds = %33, %32
  call void @llvm.memset.p0.i64(ptr align 8 %16, i8 0, i64 368, i1 false)
  %35 = load i32, ptr %15, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 368, ptr %16) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #3
  ret i32 %35
}

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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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}


; 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"

%struct.hmac_ctx_st = type { ptr, %struct.DIGEST_CTX, %struct.DIGEST_CTX, %struct.DIGEST_CTX }
%struct.DIGEST_CTX = type { %union.anon, ptr }
%union.anon = type { %struct.SM3_CTX }
%struct.SM3_CTX = type { [8 x i32], i64, [64 x i8], i64 }

; Function Attrs: nounwind uwtable
declare dso_local i32 @hmac_init(ptr noundef, ptr noundef, ptr noundef, i64 noundef) 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 @hmac_update(ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i32 @hmac_finish(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @hmac(ptr noundef %0, ptr noundef %1, i64 noundef %2, ptr noundef %3, i64 noundef %4, ptr noundef %5, ptr noundef %6) local_unnamed_addr #0 {
  %8 = alloca %struct.hmac_ctx_st, align 8
  call void @llvm.lifetime.start.p0(i64 368, ptr nonnull %8) #2
  %9 = call i32 @hmac_init(ptr noundef nonnull %8, ptr noundef %0, ptr noundef %1, i64 noundef %2)
  %.not = icmp eq i32 %9, 1
  br i1 %.not, label %10, label %14

10:                                               ; preds = %7
  %11 = call i32 @hmac_update(ptr noundef nonnull %8, ptr noundef %3, i64 noundef %4)
  %.not7 = icmp eq i32 %11, 1
  br i1 %.not7, label %12, label %14

12:                                               ; preds = %10
  %13 = call i32 @hmac_finish(ptr noundef nonnull %8, ptr noundef %5, ptr noundef %6)
  %.not8 = icmp eq i32 %13, 1
  %spec.select = zext i1 %.not8 to i32
  br label %14

14:                                               ; preds = %12, %7, %10
  %.0 = phi i32 [ 0, %7 ], [ 0, %10 ], [ %spec.select, %12 ]
  call void @llvm.lifetime.end.p0(i64 368, ptr nonnull %8) #2
  ret i32 %.0
}

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


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