; LLVM IR from albertobsd/keyhunt :: secp256k1/IntMod.ll (ZN3Int6ModExpEPS_)

; 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"

%class.Int = type { %union.anon }
%union.anon = type { [5 x i64] }

; 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

declare void @_ZN3IntC1EPS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef) unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3Int6ModExpEPS_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %class.Int, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr %5) #3
  call void @_ZN3IntC1EPS_(ptr noundef nonnull align 8 dereferenceable(40) %5, ptr noundef %8)
  call void @_ZN3Int8SetInt32Ej(ptr noundef nonnull align 8 dereferenceable(40) %8, i32 noundef 1)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call noundef i32 @_ZN3Int12GetBitLengthEv(ptr noundef nonnull align 8 dereferenceable(40) %9)
  store i32 %10, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %23, %2
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %26

16:                                               ; preds = %11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = call noundef i32 @_ZN3Int6GetBitEj(ptr noundef nonnull align 8 dereferenceable(40) %17, i32 noundef %18)
  %20 = icmp ne i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %16
  call void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40) %8, ptr noundef %5)
  br label %22

22:                                               ; preds = %21, %16
  call void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40) %5, ptr noundef %5)
  br label %23

23:                                               ; preds = %22
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %7, align 4, !tbaa !9
  br label %11, !llvm.loop !11

26:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 40, ptr %5) #3
  ret void
}

declare void @_ZN3Int8SetInt32Ej(ptr noundef nonnull align 8 dereferenceable(40), i32 noundef) #1

declare noundef i32 @_ZN3Int12GetBitLengthEv(ptr noundef nonnull align 8 dereferenceable(40)) #1

declare noundef i32 @_ZN3Int6GetBitEj(ptr noundef nonnull align 8 dereferenceable(40), i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { mustprogress 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 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%class.Int = type { %union.anon }
%union.anon = type { [5 x i64] }

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

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

declare void @_ZN3IntC1EPS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef) unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3Int6ModExpEPS_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef %1) local_unnamed_addr #2 align 2 {
  %3 = alloca %class.Int, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %3) #3
  call void @_ZN3IntC1EPS_(ptr noundef nonnull align 8 dereferenceable(40) %3, ptr noundef nonnull %0)
  call void @_ZN3Int8SetInt32Ej(ptr noundef nonnull align 8 dereferenceable(40) %0, i32 noundef 1)
  %4 = call noundef i32 @_ZN3Int12GetBitLengthEv(ptr noundef nonnull align 8 dereferenceable(40) %1)
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %8, %2
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %3) #3
  ret void

.lr.ph:                                           ; preds = %2, %8
  %.06 = phi i32 [ %9, %8 ], [ 0, %2 ]
  %6 = call noundef i32 @_ZN3Int6GetBitEj(ptr noundef nonnull align 8 dereferenceable(40) %1, i32 noundef %.06)
  %.not = icmp eq i32 %6, 0
  br i1 %.not, label %8, label %7

7:                                                ; preds = %.lr.ph
  call void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull %3)
  br label %8

8:                                                ; preds = %7, %.lr.ph
  call void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40) %3, ptr noundef nonnull %3)
  %9 = add nuw nsw i32 %.06, 1
  %exitcond.not = icmp eq i32 %9, %4
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5
}

declare void @_ZN3Int8SetInt32Ej(ptr noundef nonnull align 8 dereferenceable(40), i32 noundef) local_unnamed_addr #1

declare noundef i32 @_ZN3Int12GetBitLengthEv(ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #1

declare noundef i32 @_ZN3Int6GetBitEj(ptr noundef nonnull align 8 dereferenceable(40), i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3Int6ModMulEPS_(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef) local_unnamed_addr #2 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { mustprogress 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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass