; LLVM IR from cryspen/libcrux :: sys/hacl/c/src (Hacl_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"

@.str = external hidden unnamed_addr constant [70 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [78 x i8], align 1

declare i32 @printf(ptr noundef, ...) #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.stackrestore.p0(ptr) #2

; Function Attrs: nounwind uwtable
declare hidden void @bn_mont_reduction_u32(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef) #4

; Function Attrs: nounwind uwtable
define dso_local void @Hacl_Bignum_Montgomery_bn_from_mont_u32(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) #4 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  store i32 %0, ptr %6, align 4, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !9
  br label %13

13:                                               ; preds = %5
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = add i32 %14, %15
  %17 = zext i32 %16 to i64
  %18 = icmp ugt i64 %17, 4611686018427387903
  br i1 %18, label %19, label %21

19:                                               ; preds = %13
  %20 = call i32 (ptr, ...) @printf(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 966)
  call void @exit(i32 noundef 253) #6
  unreachable

21:                                               ; preds = %13
  br label %22

22:                                               ; preds = %21
  %23 = load i32, ptr %6, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = add i32 %23, %24
  %26 = zext i32 %25 to i64
  %27 = call ptr @llvm.stacksave.p0()
  store ptr %27, ptr %11, align 8
  %28 = alloca i32, i64 %26, align 16
  store i64 %26, ptr %12, align 8
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = add i32 %29, %30
  %32 = zext i32 %31 to i64
  %33 = mul i64 %32, 4
  call void @llvm.memset.p0.i64(ptr align 16 %28, i8 0, i64 %33, i1 false)
  %34 = load ptr, ptr %9, align 8, !tbaa !9
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = zext i32 %35 to i64
  %37 = mul i64 %36, 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %28, ptr align 4 %34, i64 %37, i1 false)
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load ptr, ptr %7, align 8, !tbaa !9
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = load ptr, ptr %10, align 8, !tbaa !9
  call void @bn_mont_reduction_u32(i32 noundef %38, ptr noundef %39, i32 noundef %40, ptr noundef %28, ptr noundef %41)
  %42 = load ptr, ptr %11, align 8
  call void @llvm.stackrestore.p0(ptr %42)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #5

attributes #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 = { noreturn nounwind "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 = { nocallback nofree nosync nounwind willreturn }
attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { 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 #5 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #6 = { noreturn 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}


; 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 nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
declare hidden void @bn_mont_reduction_u32(i32 noundef, ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @Hacl_Bignum_Montgomery_bn_from_mont_u32(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr nocapture noundef readonly %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = shl i32 %0, 1
  %7 = zext i32 %6 to i64
  %8 = alloca i32, i64 %7, align 16
  %9 = shl nuw nsw i64 %7, 2
  call void @llvm.memset.p0.i64(ptr nonnull align 16 %8, i8 0, i64 %9, i1 false)
  %10 = zext i32 %0 to i64
  %11 = shl nuw nsw i64 %10, 2
  call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 16 %8, ptr align 4 %3, i64 %11, i1 false)
  call void @bn_mont_reduction_u32(i32 noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef nonnull %8, ptr noundef %4)
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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)"}


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