; LLVM IR from openssl/openssl :: crypto/ct (ct_sct)

; 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.sct_st = type { i32, ptr, i64, ptr, i64, i64, ptr, i64, i8, i8, ptr, i64, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local i32 @SCT_get_signature_nid(ptr noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.sct_st, ptr %4, i32 0, i32 0
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = icmp eq i32 %6, 0
  br i1 %7, label %8, label %23

8:                                                ; preds = %1
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.sct_st, ptr %9, i32 0, i32 8
  %11 = load i8, ptr %10, align 8, !tbaa !13
  %12 = zext i8 %11 to i32
  %13 = icmp eq i32 %12, 4
  br i1 %13, label %14, label %22

14:                                               ; preds = %8
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.sct_st, ptr %15, i32 0, i32 9
  %17 = load i8, ptr %16, align 1, !tbaa !14
  %18 = zext i8 %17 to i32
  switch i32 %18, label %21 [
    i32 3, label %19
    i32 1, label %20
  ]

19:                                               ; preds = %14
  store i32 794, ptr %2, align 4
  br label %24

20:                                               ; preds = %14
  store i32 668, ptr %2, align 4
  br label %24

21:                                               ; preds = %14
  store i32 0, ptr %2, align 4
  br label %24

22:                                               ; preds = %8
  br label %23

23:                                               ; preds = %22, %1
  store i32 0, ptr %2, align 4
  br label %24

24:                                               ; preds = %23, %21, %20, %19
  %25 = load i32, ptr %2, align 4
  ret i32 %25
}

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" }

!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, !11, i64 0}
!10 = !{!"sct_st", !11, i64 0, !6, i64 8, !12, i64 16, !6, i64 24, !12, i64 32, !12, i64 40, !6, i64 48, !12, i64 56, !7, i64 64, !7, i64 65, !6, i64 72, !12, i64 80, !11, i64 88, !11, i64 92, !11, i64 96}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!10, !7, i64 64}
!14 = !{!10, !7, i64 65}


; 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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local range(i32 0, 795) i32 @SCT_get_signature_nid(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %3 = icmp eq i32 %2, 0
  br i1 %3, label %4, label %11

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 64
  %6 = load i8, ptr %5, align 8, !tbaa !12
  %7 = icmp eq i8 %6, 4
  br i1 %7, label %8, label %11

8:                                                ; preds = %4
  %9 = getelementptr inbounds i8, ptr %0, i64 65
  %10 = load i8, ptr %9, align 1, !tbaa !13
  %switch.selectcmp = icmp eq i8 %10, 1
  %switch.select = select i1 %switch.selectcmp, i32 668, i32 0
  %switch.selectcmp3 = icmp eq i8 %10, 3
  %switch.select4 = select i1 %switch.selectcmp3, i32 794, i32 %switch.select
  br label %11

11:                                               ; preds = %1, %4, %8
  %.0 = phi i32 [ %switch.select4, %8 ], [ 0, %4 ], [ 0, %1 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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" }

!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 = !{!"sct_st", !7, i64 0, !10, i64 8, !11, i64 16, !10, i64 24, !11, i64 32, !11, i64 40, !10, i64 48, !11, i64 56, !8, i64 64, !8, i64 65, !10, i64 72, !11, i64 80, !7, i64 88, !7, i64 92, !7, i64 96}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !8, i64 64}
!13 = !{!6, !8, i64 65}


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