; LLVM IR from intel/cryptography-primitives :: sources/ippcp (pcpbngetsize)

; 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: nounwind uwtable
define dso_local i32 @ippsBigNumGetSize(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  %7 = load ptr, ptr %5, align 8, !tbaa !9
  %8 = icmp eq ptr null, %7
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i32 -8, ptr %3, align 4
  br label %33

10:                                               ; preds = %2
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp slt i32 %11, 1
  br i1 %12, label %16, label %13

13:                                               ; preds = %10
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = icmp sgt i32 %14, 512
  br i1 %15, label %16, label %17

16:                                               ; preds = %13, %10
  store i32 -15, ptr %3, align 4
  br label %33

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = add nsw i32 %18, 2
  %20 = sub nsw i32 %19, 1
  %21 = sdiv i32 %20, 2
  store i32 %21, ptr %6, align 4, !tbaa !5
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %6, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = mul nsw i32 %24, 8
  %26 = add nsw i32 32, %25
  %27 = load i32, ptr %6, align 4, !tbaa !5
  %28 = mul nsw i32 %27, 8
  %29 = add nsw i32 %26, %28
  %30 = add nsw i32 %29, 8
  %31 = sub nsw i32 %30, 1
  %32 = load ptr, ptr %5, align 8, !tbaa !9
  store i32 %31, ptr %32, align 4, !tbaa !5
  store i32 0, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %33

33:                                               ; preds = %17, %16, %9
  %34 = load i32, ptr %3, align 4
  ret i32 %34
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!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 nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local range(i32 -15, 1) i32 @ippsBigNumGetSize(i32 noundef %0, ptr noundef writeonly %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %1, null
  br i1 %3, label %11, label %4

4:                                                ; preds = %2
  %5 = add i32 %0, -513
  %or.cond = icmp ult i32 %5, -512
  br i1 %or.cond, label %11, label %6

6:                                                ; preds = %4
  %7 = shl nuw nsw i32 %0, 3
  %8 = add nuw nsw i32 %7, 8
  %9 = and i32 %8, 16368
  %10 = add nuw nsw i32 %9, 55
  store i32 %10, ptr %1, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %4, %2, %6
  %.0 = phi i32 [ 0, %6 ], [ -8, %2 ], [ -15, %4 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass