; LLVM IR from trustwallet/wallet-core :: trezor-crypto/crypto (bignum)

; 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.bignum256 = type { [9 x i32] }

; 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
declare dso_local void @bn_multiply_reduce_step(ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @bn_multiply_reduce(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 8, ptr %7, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %17, %3
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = icmp sge i32 %10, 0
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %20

13:                                               ; preds = %9
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !9
  call void @bn_multiply_reduce_step(ptr noundef %14, ptr noundef %15, i32 noundef %16)
  br label %17

17:                                               ; preds = %13
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %7, align 4, !tbaa !9
  br label %9, !llvm.loop !11

20:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %21

21:                                               ; preds = %36, %20
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = icmp slt i32 %22, 9
  br i1 %23, label %25, label %24

24:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %39

25:                                               ; preds = %21
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds i32, ptr %26, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.bignum256, ptr %31, i32 0, i32 0
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [9 x i32], ptr %32, i64 0, i64 %34
  store i32 %30, ptr %35, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %25
  %37 = load i32, ptr %8, align 4, !tbaa !9
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %8, align 4, !tbaa !9
  br label %21, !llvm.loop !13

39:                                               ; preds = %24
  ret void
}

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 }

!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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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: nounwind uwtable
declare dso_local void @bn_multiply_reduce_step(ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @bn_multiply_reduce(ptr nocapture noundef writeonly %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
.preheader.preheader:
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 8)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 7)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 6)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 5)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 4)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 3)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 2)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 1)
  tail call void @bn_multiply_reduce_step(ptr noundef %1, ptr noundef %2, i32 noundef 0)
  %3 = load i32, ptr %1, align 4, !tbaa !5
  store i32 %3, ptr %0, align 4, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %1, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 4
  store i32 %5, ptr %6, align 4, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 %8, ptr %9, align 4, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %1, i64 12
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %0, i64 12
  store i32 %11, ptr %12, align 4, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %1, i64 16
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %0, i64 16
  store i32 %14, ptr %15, align 4, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %1, i64 20
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %0, i64 20
  store i32 %17, ptr %18, align 4, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %1, i64 24
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 %20, ptr %21, align 4, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %1, i64 28
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %0, i64 28
  store i32 %23, ptr %24, align 4, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %1, i64 32
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = getelementptr inbounds i8, ptr %0, i64 32
  store i32 %26, ptr %27, align 4, !tbaa !5
  ret void
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


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