; LLVM IR from aws/s2n-tls :: crypto (s2n_fips_rules)

; 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.s2n_debug_info = type { ptr, ptr }
%struct.s2n_result = type { i32 }

@fips_hash_algs = external dso_local constant [4 x i32], align 16
@.str = external hidden unnamed_addr constant [93 x i8], align 1
@_s2n_debug_info = external thread_local global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local i32 @s2n_fips_validate_hash_algorithm(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca %struct.s2n_result, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  br label %8

8:                                                ; preds = %2
  %9 = load ptr, ptr %5, align 8, !tbaa !9
  %10 = icmp ne ptr %9, null
  br i1 %10, label %43, label %11

11:                                               ; preds = %8
  br label %12

12:                                               ; preds = %11
  br label %13

13:                                               ; preds = %12
  %14 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %15 = getelementptr inbounds %struct.s2n_debug_info, ptr %14, i32 0, i32 0
  store ptr @.str, ptr %15, align 8, !tbaa !11
  %16 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %17 = getelementptr inbounds %struct.s2n_debug_info, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !11
  %19 = getelementptr inbounds i8, ptr %18, i64 21
  %20 = call ptr @strrchr(ptr noundef %19, i32 noundef 47) #5
  %21 = icmp ne ptr %20, null
  br i1 %21, label %22, label %29

22:                                               ; preds = %13
  %23 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %24 = getelementptr inbounds %struct.s2n_debug_info, ptr %23, i32 0, i32 0
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  %26 = getelementptr inbounds i8, ptr %25, i64 21
  %27 = call ptr @strrchr(ptr noundef %26, i32 noundef 47) #5
  %28 = getelementptr inbounds i8, ptr %27, i64 1
  br label %34

29:                                               ; preds = %13
  %30 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %31 = getelementptr inbounds %struct.s2n_debug_info, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !11
  %33 = getelementptr inbounds i8, ptr %32, i64 21
  br label %34

34:                                               ; preds = %29, %22
  %35 = phi ptr [ %28, %22 ], [ %33, %29 ]
  %36 = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  %37 = getelementptr inbounds %struct.s2n_debug_info, ptr %36, i32 0, i32 1
  store ptr %35, ptr %37, align 8, !tbaa !13
  %38 = call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %38, align 4, !tbaa !5
  %39 = call i32 @s2n_calculate_stacktrace()
  br label %40

40:                                               ; preds = %34
  %41 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 -1, ptr %41, align 4, !tbaa !14
  br label %67

42:                                               ; No predecessors!
  br label %43

43:                                               ; preds = %42, %8
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr %5, align 8, !tbaa !9
  store i8 0, ptr %45, align 1, !tbaa !16
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  store i64 0, ptr %6, align 8, !tbaa !18
  br label %46

46:                                               ; preds = %60, %44
  %47 = load i64, ptr %6, align 8, !tbaa !18
  %48 = icmp ult i64 %47, 4
  br i1 %48, label %50, label %49

49:                                               ; preds = %46
  store i32 8, ptr %7, align 4
  br label %63

50:                                               ; preds = %46
  %51 = load i64, ptr %6, align 8, !tbaa !18
  %52 = getelementptr inbounds [4 x i32], ptr @fips_hash_algs, i64 0, i64 %51
  %53 = load i32, ptr %52, align 4, !tbaa !5
  %54 = load i32, ptr %4, align 4, !tbaa !5
  %55 = icmp eq i32 %53, %54
  br i1 %55, label %56, label %59

56:                                               ; preds = %50
  %57 = load ptr, ptr %5, align 8, !tbaa !9
  store i8 1, ptr %57, align 1, !tbaa !16
  %58 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 0, ptr %58, align 4, !tbaa !14
  store i32 1, ptr %7, align 4
  br label %63

59:                                               ; preds = %50
  br label %60

60:                                               ; preds = %59
  %61 = load i64, ptr %6, align 8, !tbaa !18
  %62 = add i64 %61, 1
  store i64 %62, ptr %6, align 8, !tbaa !18
  br label %46, !llvm.loop !20

63:                                               ; preds = %56, %49
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  %64 = load i32, ptr %7, align 4
  switch i32 %64, label %70 [
    i32 8, label %65
    i32 1, label %67
  ]

65:                                               ; preds = %63
  %66 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  store i32 0, ptr %66, align 4, !tbaa !14
  br label %67

67:                                               ; preds = %65, %63, %40
  %68 = getelementptr inbounds %struct.s2n_result, ptr %3, i32 0, i32 0
  %69 = load i32, ptr %68, align 4
  ret i32 %69

70:                                               ; preds = %63
  unreachable
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1

; Function Attrs: nounwind willreturn memory(read)
declare ptr @strrchr(ptr noundef, i32 noundef) #2

declare i32 @s2n_calculate_stacktrace() #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4

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 speculatable willreturn memory(none) }
attributes #2 = { nounwind willreturn memory(read) "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nounwind willreturn memory(read) }
attributes #6 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"s2n_debug_info", !10, i64 0, !10, i64 8}
!13 = !{!12, !10, i64 8}
!14 = !{!15, !6, i64 0}
!15 = !{!"", !6, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"_Bool", !7, i64 0}
!18 = !{!19, !19, i64 0}
!19 = !{!"long", !7, i64 0}
!20 = distinct !{!20, !21}
!21 = !{!"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"

%struct.s2n_debug_info = type { ptr, ptr }

@fips_hash_algs = external dso_local local_unnamed_addr constant [4 x i32], align 16
@.str = external hidden unnamed_addr constant [93 x i8], align 1
@_s2n_debug_info = external thread_local local_unnamed_addr global %struct.s2n_debug_info, align 8
@s2n_errno = external thread_local local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @s2n_fips_validate_hash_algorithm(i32 noundef %0, ptr noundef writeonly %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %1, null
  br i1 %.not, label %3, label %11

3:                                                ; preds = %2
  %4 = tail call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @_s2n_debug_info)
  store ptr @.str, ptr %4, align 8, !tbaa !5
  %5 = tail call ptr @strrchr(ptr noundef nonnull dereferenceable(1) getelementptr inbounds (i8, ptr @.str, i64 21), i32 noundef 47) #4
  %.not10 = icmp eq ptr %5, null
  %6 = getelementptr inbounds i8, ptr %5, i64 1
  %7 = select i1 %.not10, ptr getelementptr inbounds (i8, ptr @.str, i64 21), ptr %6
  %8 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %7, ptr %8, align 8, !tbaa !10
  %9 = tail call align 4 ptr @llvm.threadlocal.address.p0(ptr align 4 @s2n_errno)
  store i32 402653193, ptr %9, align 4, !tbaa !11
  %10 = tail call i32 @s2n_calculate_stacktrace() #5
  br label %.loopexit

11:                                               ; preds = %2
  store i8 0, ptr %1, align 1, !tbaa !13
  %12 = load <4 x i32>, ptr @fips_hash_algs, align 16
  %13 = insertelement <4 x i32> poison, i32 %0, i64 0
  %14 = shufflevector <4 x i32> %13, <4 x i32> poison, <4 x i32> zeroinitializer
  %15 = icmp eq <4 x i32> %12, %14
  %16 = freeze <4 x i1> %15
  %17 = bitcast <4 x i1> %16 to i4
  %.not17 = icmp eq i4 %17, 0
  %spec.store.select = select i1 %.not17, i8 0, i8 1
  store i8 %spec.store.select, ptr %1, align 1
  br label %.loopexit

.loopexit:                                        ; preds = %11, %3
  %.sroa.0.1 = phi i32 [ -1, %3 ], [ 0, %11 ]
  ret i32 %.sroa.0.1
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare ptr @strrchr(ptr noundef, i32 noundef) local_unnamed_addr #2

declare i32 @s2n_calculate_stacktrace() local_unnamed_addr #3

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 speculatable willreturn memory(none) }
attributes #2 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 willreturn memory(read) }
attributes #5 = { 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, !7, i64 0}
!6 = !{!"s2n_debug_info", !7, i64 0, !7, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"_Bool", !8, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalDCEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass