; LLVM IR from openssl/openssl :: crypto/evp (ec_support)

; 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.ec_name2nid_st = type { ptr, i32 }

@nist_curves = external hidden constant [15 x %struct.ec_name2nid_st], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @ossl_ec_curve_nist2nid_int(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %23, %1
  %7 = load i64, ptr %4, align 8, !tbaa !9
  %8 = icmp ult i64 %7, 15
  br i1 %8, label %9, label %26

9:                                                ; preds = %6
  %10 = load i64, ptr %4, align 8, !tbaa !9
  %11 = getelementptr inbounds [15 x %struct.ec_name2nid_st], ptr @nist_curves, i64 0, i64 %10
  %12 = getelementptr inbounds %struct.ec_name2nid_st, ptr %11, i32 0, i32 0
  %13 = load ptr, ptr %12, align 16, !tbaa !11
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = call i32 @strcmp(ptr noundef %13, ptr noundef %14) #4
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %17, label %22

17:                                               ; preds = %9
  %18 = load i64, ptr %4, align 8, !tbaa !9
  %19 = getelementptr inbounds [15 x %struct.ec_name2nid_st], ptr @nist_curves, i64 0, i64 %18
  %20 = getelementptr inbounds %struct.ec_name2nid_st, ptr %19, i32 0, i32 1
  %21 = load i32, ptr %20, align 8, !tbaa !14
  store i32 %21, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %27

22:                                               ; preds = %9
  br label %23

23:                                               ; preds = %22
  %24 = load i64, ptr %4, align 8, !tbaa !9
  %25 = add i64 %24, 1
  store i64 %25, ptr %4, align 8, !tbaa !9
  br label %6, !llvm.loop !15

26:                                               ; preds = %6
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %27

27:                                               ; preds = %26, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %28 = load i32, ptr %2, align 4
  ret i32 %28
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { nounwind }
attributes #4 = { nounwind willreturn memory(read) }

!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, !6, i64 0}
!12 = !{!"ec_name2nid_st", !6, i64 0, !13, i64 8}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !13, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"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.ec_name2nid_st = type { ptr, i32 }

@nist_curves = external hidden local_unnamed_addr constant [15 x %struct.ec_name2nid_st], align 16

; Function Attrs: mustprogress nofree nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @ossl_ec_curve_nist2nid_int(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr @nist_curves, align 16, !tbaa !5
  %3 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %2, ptr noundef nonnull dereferenceable(1) %0) #2
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %61, label %5

5:                                                ; preds = %1
  %6 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 16), align 16, !tbaa !5
  %7 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %6, ptr noundef nonnull dereferenceable(1) %0) #2
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %61, label %9

9:                                                ; preds = %5
  %10 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 32), align 16, !tbaa !5
  %11 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %10, ptr noundef nonnull dereferenceable(1) %0) #2
  %12 = icmp eq i32 %11, 0
  br i1 %12, label %61, label %13

13:                                               ; preds = %9
  %14 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 48), align 16, !tbaa !5
  %15 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %14, ptr noundef nonnull dereferenceable(1) %0) #2
  %16 = icmp eq i32 %15, 0
  br i1 %16, label %61, label %17

17:                                               ; preds = %13
  %18 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 64), align 16, !tbaa !5
  %19 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %18, ptr noundef nonnull dereferenceable(1) %0) #2
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %61, label %21

21:                                               ; preds = %17
  %22 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 80), align 16, !tbaa !5
  %23 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %22, ptr noundef nonnull dereferenceable(1) %0) #2
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %61, label %25

25:                                               ; preds = %21
  %26 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 96), align 16, !tbaa !5
  %27 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %26, ptr noundef nonnull dereferenceable(1) %0) #2
  %28 = icmp eq i32 %27, 0
  br i1 %28, label %61, label %29

29:                                               ; preds = %25
  %30 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 112), align 16, !tbaa !5
  %31 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %30, ptr noundef nonnull dereferenceable(1) %0) #2
  %32 = icmp eq i32 %31, 0
  br i1 %32, label %61, label %33

33:                                               ; preds = %29
  %34 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 128), align 16, !tbaa !5
  %35 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %34, ptr noundef nonnull dereferenceable(1) %0) #2
  %36 = icmp eq i32 %35, 0
  br i1 %36, label %61, label %37

37:                                               ; preds = %33
  %38 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 144), align 16, !tbaa !5
  %39 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %38, ptr noundef nonnull dereferenceable(1) %0) #2
  %40 = icmp eq i32 %39, 0
  br i1 %40, label %61, label %41

41:                                               ; preds = %37
  %42 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 160), align 16, !tbaa !5
  %43 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %42, ptr noundef nonnull dereferenceable(1) %0) #2
  %44 = icmp eq i32 %43, 0
  br i1 %44, label %61, label %45

45:                                               ; preds = %41
  %46 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 176), align 16, !tbaa !5
  %47 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %46, ptr noundef nonnull dereferenceable(1) %0) #2
  %48 = icmp eq i32 %47, 0
  br i1 %48, label %61, label %49

49:                                               ; preds = %45
  %50 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 192), align 16, !tbaa !5
  %51 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %50, ptr noundef nonnull dereferenceable(1) %0) #2
  %52 = icmp eq i32 %51, 0
  br i1 %52, label %61, label %53

53:                                               ; preds = %49
  %54 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 208), align 16, !tbaa !5
  %55 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %54, ptr noundef nonnull dereferenceable(1) %0) #2
  %56 = icmp eq i32 %55, 0
  br i1 %56, label %61, label %57

57:                                               ; preds = %53
  %58 = load ptr, ptr getelementptr inbounds (i8, ptr @nist_curves, i64 224), align 16, !tbaa !5
  %59 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %58, ptr noundef nonnull dereferenceable(1) %0) #2
  %60 = icmp eq i32 %59, 0
  br i1 %60, label %61, label %.loopexit

61:                                               ; preds = %57, %53, %49, %45, %41, %37, %33, %29, %25, %21, %17, %13, %9, %5, %1
  %.lcssa = phi ptr [ @nist_curves, %1 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 16), %5 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 32), %9 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 48), %13 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 64), %17 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 80), %21 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 96), %25 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 112), %29 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 128), %33 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 144), %37 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 160), %41 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 176), %45 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 192), %49 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 208), %53 ], [ getelementptr inbounds (i8, ptr @nist_curves, i64 224), %57 ]
  %62 = getelementptr inbounds i8, ptr %.lcssa, i64 8
  %63 = load i32, ptr %62, align 8, !tbaa !11
  br label %.loopexit

.loopexit:                                        ; preds = %57, %61
  %.05 = phi i32 [ %63, %61 ], [ 0, %57 ]
  ret i32 %.05
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(read, inaccessiblemem: none) 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 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 #2 = { nounwind willreturn memory(read) }

!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 = !{!"ec_name2nid_st", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 8}


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