; 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"

; 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 @Hacl_Bignum_ModInvLimb_mod_inv_uint32(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 -2147483648, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %13 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %13, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !5
  store i32 1, ptr %5, align 4, !tbaa !5
  store i32 0, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %42, %1
  %15 = load i32, ptr %7, align 4, !tbaa !5
  %16 = icmp ult i32 %15, 32
  br i1 %16, label %18, label %17

17:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %45

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %19 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %19, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %20 = load i32, ptr %6, align 4, !tbaa !5
  store i32 %20, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %21 = load i32, ptr %8, align 4, !tbaa !5
  %22 = and i32 %21, 1
  %23 = sub i32 0, %22
  store i32 %23, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = load i32, ptr %10, align 4, !tbaa !5
  %26 = and i32 %24, %25
  store i32 %26, ptr %11, align 4, !tbaa !5
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = load i32, ptr %11, align 4, !tbaa !5
  %29 = xor i32 %27, %28
  %30 = lshr i32 %29, 1
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = load i32, ptr %11, align 4, !tbaa !5
  %33 = and i32 %31, %32
  %34 = add i32 %30, %33
  store i32 %34, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = load i32, ptr %10, align 4, !tbaa !5
  %37 = and i32 %35, %36
  store i32 %37, ptr %12, align 4, !tbaa !5
  %38 = load i32, ptr %9, align 4, !tbaa !5
  %39 = lshr i32 %38, 1
  %40 = load i32, ptr %12, align 4, !tbaa !5
  %41 = add i32 %39, %40
  store i32 %41, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %42

42:                                               ; preds = %18
  %43 = load i32, ptr %7, align 4, !tbaa !5
  %44 = add i32 %43, 1
  store i32 %44, ptr %7, align 4, !tbaa !5
  br label %14, !llvm.loop !9

45:                                               ; preds = %17
  %46 = load i32, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %46
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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: nofree norecurse nosync nounwind memory(none) uwtable
define dso_local i32 @Hacl_Bignum_ModInvLimb_mod_inv_uint32(i32 noundef %0) local_unnamed_addr #0 {
  br label %3

2:                                                ; preds = %3
  ret i32 %22

3:                                                ; preds = %3, %1
  %.021 = phi i32 [ 1, %1 ], [ %17, %3 ]
  %.01720 = phi i32 [ 0, %1 ], [ %22, %3 ]
  %.01819 = phi i32 [ 0, %1 ], [ %23, %3 ]
  %4 = and i32 %.021, 1
  %5 = sub nsw i32 0, %4
  %6 = and i32 %5, %0
  %7 = xor i32 %6, %.021
  %8 = lshr i32 %7, 1
  %9 = and i32 %6, %.021
  %10 = add i32 %8, %9
  %11 = and i32 %10, 1
  %12 = sub nsw i32 0, %11
  %13 = and i32 %12, %0
  %14 = xor i32 %13, %10
  %15 = lshr i32 %14, 1
  %16 = and i32 %13, %10
  %17 = add i32 %15, %16
  %18 = and i32 %12, -2147483648
  %19 = lshr i32 %.01720, 2
  %20 = and i32 %5, 1073741824
  %21 = or disjoint i32 %19, %20
  %22 = or disjoint i32 %18, %21
  %23 = add nuw nsw i32 %.01819, 2
  %exitcond.not.1 = icmp eq i32 %23, 32
  br i1 %exitcond.not.1, label %2, label %3, !llvm.loop !5
}

attributes #0 = { nofree norecurse nosync nounwind memory(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" }

!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: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass