; LLVM IR from square/subzero :: core/trezor-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
define dso_local void @bn_addi(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %7 = load i32, ptr %4, align 4, !tbaa !9
  store i32 %7, ptr %6, align 4, !tbaa !9
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %29, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp slt i32 %9, 9
  br i1 %10, label %11, label %32

11:                                               ; preds = %8
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.bignum256, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [9 x i32], ptr %13, i64 0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = add i32 %18, %17
  store i32 %19, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = and i32 %20, 1073741823
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.bignum256, ptr %22, i32 0, i32 0
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [9 x i32], ptr %23, i64 0, i64 %25
  store i32 %21, ptr %26, align 4, !tbaa !9
  %27 = load i32, ptr %6, align 4, !tbaa !9
  %28 = lshr i32 %27, 30
  store i32 %28, ptr %6, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %11
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !11

32:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  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"}


; 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: readwrite) uwtable
define dso_local void @bn_addi(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr %0, align 4, !tbaa !5
  %4 = add i32 %3, %1
  %5 = and i32 %4, 1073741823
  store i32 %5, ptr %0, align 4, !tbaa !5
  %6 = lshr i32 %4, 30
  %7 = getelementptr inbounds i8, ptr %0, i64 4
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = add i32 %8, %6
  %10 = and i32 %9, 1073741823
  store i32 %10, ptr %7, align 4, !tbaa !5
  %11 = lshr i32 %9, 30
  %12 = getelementptr inbounds i8, ptr %0, i64 8
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = add i32 %13, %11
  %15 = and i32 %14, 1073741823
  store i32 %15, ptr %12, align 4, !tbaa !5
  %16 = lshr i32 %14, 30
  %17 = getelementptr inbounds i8, ptr %0, i64 12
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = add i32 %18, %16
  %20 = and i32 %19, 1073741823
  store i32 %20, ptr %17, align 4, !tbaa !5
  %21 = lshr i32 %19, 30
  %22 = getelementptr inbounds i8, ptr %0, i64 16
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add i32 %23, %21
  %25 = and i32 %24, 1073741823
  store i32 %25, ptr %22, align 4, !tbaa !5
  %26 = lshr i32 %24, 30
  %27 = getelementptr inbounds i8, ptr %0, i64 20
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = add i32 %28, %26
  %30 = and i32 %29, 1073741823
  store i32 %30, ptr %27, align 4, !tbaa !5
  %31 = lshr i32 %29, 30
  %32 = getelementptr inbounds i8, ptr %0, i64 24
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = add i32 %33, %31
  %35 = and i32 %34, 1073741823
  store i32 %35, ptr %32, align 4, !tbaa !5
  %36 = lshr i32 %34, 30
  %37 = getelementptr inbounds i8, ptr %0, i64 28
  %38 = load i32, ptr %37, align 4, !tbaa !5
  %39 = add i32 %38, %36
  %40 = and i32 %39, 1073741823
  store i32 %40, ptr %37, align 4, !tbaa !5
  %41 = lshr i32 %39, 30
  %42 = getelementptr inbounds i8, ptr %0, i64 32
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = add i32 %43, %41
  %45 = and i32 %44, 1073741823
  store i32 %45, ptr %42, align 4, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass