; LLVM IR from specinfo-ua/UAPKI :: library/common/pkix (ba-utils)

; 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.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ba_free_many(i32 noundef %0, ...) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [1 x %struct.__va_list_tag], align 16
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #4
  %5 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %5)
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %6

6:                                                ; preds = %27, %1
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp slt i32 %7, %8
  br i1 %9, label %10, label %30

10:                                               ; preds = %6
  %11 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  %12 = getelementptr inbounds %struct.__va_list_tag, ptr %11, i32 0, i32 0
  %13 = load i32, ptr %12, align 16
  %14 = icmp ule i32 %13, 40
  br i1 %14, label %15, label %20

15:                                               ; preds = %10
  %16 = getelementptr inbounds %struct.__va_list_tag, ptr %11, i32 0, i32 3
  %17 = load ptr, ptr %16, align 16
  %18 = getelementptr i8, ptr %17, i32 %13
  %19 = add i32 %13, 8
  store i32 %19, ptr %12, align 16
  br label %24

20:                                               ; preds = %10
  %21 = getelementptr inbounds %struct.__va_list_tag, ptr %11, i32 0, i32 2
  %22 = load ptr, ptr %21, align 8
  %23 = getelementptr i8, ptr %22, i32 8
  store ptr %23, ptr %21, align 8
  br label %24

24:                                               ; preds = %20, %15
  %25 = phi ptr [ %18, %15 ], [ %22, %20 ]
  %26 = load ptr, ptr %25, align 8, !tbaa !9
  call void @ba_free(ptr noundef %26)
  br label %27

27:                                               ; preds = %24
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %3, align 4, !tbaa !5
  br label %6, !llvm.loop !11

30:                                               ; preds = %6
  %31 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %4, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %31)
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret void
}

; 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
declare void @llvm.va_start.p0(ptr) #2

declare void @ba_free(ptr noundef) #3

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

; 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 = { nocallback nofree nosync nounwind willreturn }
attributes #3 = { "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 #4 = { 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}
!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"

%struct.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @ba_free_many(i32 noundef %0, ...) local_unnamed_addr #0 {
  %2 = alloca [1 x %struct.__va_list_tag], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %2) #4
  call void @llvm.va_start.p0(ptr nonnull %2)
  %3 = icmp sgt i32 %0, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %2, i64 8
  %5 = getelementptr inbounds i8, ptr %2, i64 16
  br label %6

6:                                                ; preds = %.lr.ph, %17
  %.04 = phi i32 [ 0, %.lr.ph ], [ %20, %17 ]
  %7 = load i32, ptr %2, align 16
  %8 = icmp ult i32 %7, 41
  br i1 %8, label %9, label %14

9:                                                ; preds = %6
  %10 = load ptr, ptr %5, align 16
  %11 = zext nneg i32 %7 to i64
  %12 = getelementptr i8, ptr %10, i64 %11
  %13 = add nuw nsw i32 %7, 8
  store i32 %13, ptr %2, align 16
  br label %17

14:                                               ; preds = %6
  %15 = load ptr, ptr %4, align 8
  %16 = getelementptr i8, ptr %15, i64 8
  store ptr %16, ptr %4, align 8
  br label %17

17:                                               ; preds = %14, %9
  %18 = phi ptr [ %12, %9 ], [ %15, %14 ]
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  call void @ba_free(ptr noundef %19) #4
  %20 = add nuw nsw i32 %.04, 1
  %exitcond.not = icmp eq i32 %20, %0
  br i1 %exitcond.not, label %._crit_edge, label %6, !llvm.loop !9

._crit_edge:                                      ; preds = %17, %1
  call void @llvm.va_end.p0(ptr nonnull %2)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %2) #4
  ret void
}

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

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

declare void @ba_free(ptr noundef) local_unnamed_addr #3

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

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn }
attributes #3 = { "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 #4 = { 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass