; LLVM IR from stan-dev/math :: lib/sundials_6.1.1/src/kinsol (kinsol_ls)

; 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.KINMemRec = type { ptr, double, ptr, ptr, double, double, i32, i32, i64, i64, i64, i64, i32, i32, i32, i32, i32, i32, i32, i32, double, double, double, double, double, double, double, double, double, i32, double, i64, i64, i64, i64, i64, i64, i64, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, double, ptr, ptr, ptr, ptr, ptr, double, ptr, ptr, ptr, ptr, i64, i64, i32, ptr, ptr, i32, ptr, ptr, i64, i64, i64, i64, ptr, ptr, ptr, ptr, i32, ptr, double, double, double, double, double, i32, double, double, double, i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
%struct.KINLsMemRec = type { i32, i32, i32, ptr, ptr, ptr, ptr, double, i64, i64, i64, i64, i64, i64, i64, i32, i32, ptr, ptr, ptr, ptr, i32, ptr, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @kinLsFree(ptr noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %35

9:                                                ; preds = %1
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.KINMemRec, ptr %10, i32 0, i32 79
  %12 = load ptr, ptr %11, align 8, !tbaa !9
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %9
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %35

15:                                               ; preds = %9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.KINMemRec, ptr %16, i32 0, i32 79
  %18 = load ptr, ptr %17, align 8, !tbaa !9
  store ptr %18, ptr %4, align 8, !tbaa !5
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.KINLsMemRec, ptr %19, i32 0, i32 6
  store ptr null, ptr %20, align 8, !tbaa !14
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.KINLsMemRec, ptr %21, i32 0, i32 19
  %23 = load ptr, ptr %22, align 8, !tbaa !16
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %31

25:                                               ; preds = %15
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.KINLsMemRec, ptr %26, i32 0, i32 19
  %28 = load ptr, ptr %27, align 8, !tbaa !16
  %29 = load ptr, ptr %3, align 8, !tbaa !5
  %30 = call i32 %28(ptr noundef %29)
  br label %31

31:                                               ; preds = %25, %15
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.KINMemRec, ptr %32, i32 0, i32 79
  %34 = load ptr, ptr %33, align 8, !tbaa !9
  call void @free(ptr noundef %34) #3
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %35

35:                                               ; preds = %31, %14, %8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %36 = load i32, ptr %2, align 4
  ret i32 %36
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

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 "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 #3 = { 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, !6, i64 584}
!10 = !{!"KINMemRec", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !11, i64 32, !11, i64 40, !12, i64 48, !12, i64 52, !13, i64 56, !13, i64 64, !13, i64 72, !13, i64 80, !12, i64 88, !12, i64 92, !12, i64 96, !12, i64 100, !12, i64 104, !12, i64 108, !12, i64 112, !12, i64 116, !11, i64 120, !11, i64 128, !11, i64 136, !11, i64 144, !11, i64 152, !11, i64 160, !11, i64 168, !11, i64 176, !11, i64 184, !12, i64 192, !11, i64 200, !13, i64 208, !13, i64 216, !13, i64 224, !13, i64 232, !13, i64 240, !13, i64 248, !13, i64 256, !6, i64 264, !6, i64 272, !6, i64 280, !6, i64 288, !6, i64 296, !6, i64 304, !6, i64 312, !6, i64 320, !6, i64 328, !6, i64 336, !6, i64 344, !12, i64 352, !12, i64 356, !11, i64 360, !6, i64 368, !6, i64 376, !6, i64 384, !6, i64 392, !6, i64 400, !11, i64 408, !6, i64 416, !6, i64 424, !6, i64 432, !6, i64 440, !13, i64 448, !13, i64 456, !12, i64 464, !6, i64 472, !6, i64 480, !12, i64 488, !6, i64 496, !6, i64 504, !13, i64 512, !13, i64 520, !13, i64 528, !13, i64 536, !6, i64 544, !6, i64 552, !6, i64 560, !6, i64 568, !12, i64 576, !6, i64 584, !11, i64 592, !11, i64 600, !11, i64 608, !11, i64 616, !11, i64 624, !12, i64 632, !11, i64 640, !11, i64 648, !11, i64 656, !12, i64 664, !6, i64 672, !6, i64 680, !6, i64 688, !6, i64 696, !6, i64 704, !6, i64 712, !6, i64 720}
!11 = !{!"double", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"long", !7, i64 0}
!14 = !{!15, !6, i64 40}
!15 = !{!"KINLsMemRec", !12, i64 0, !12, i64 4, !12, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !11, i64 48, !13, i64 56, !13, i64 64, !13, i64 72, !13, i64 80, !13, i64 88, !13, i64 96, !13, i64 104, !12, i64 112, !12, i64 116, !6, i64 120, !6, i64 128, !6, i64 136, !6, i64 144, !12, i64 152, !6, i64 160, !6, i64 168, !6, i64 176}
!16 = !{!15, !6, i64 136}


; 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: nounwind uwtable
define dso_local noundef i32 @kinLsFree(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %15, label %3

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 584
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = icmp eq ptr %5, null
  br i1 %6, label %15, label %7

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %5, i64 40
  store ptr null, ptr %8, align 8, !tbaa !13
  %9 = getelementptr inbounds i8, ptr %5, i64 136
  %10 = load ptr, ptr %9, align 8, !tbaa !15
  %.not = icmp eq ptr %10, null
  br i1 %.not, label %13, label %11

11:                                               ; preds = %7
  %12 = tail call i32 %10(ptr noundef nonnull %0) #2
  %.pre = load ptr, ptr %4, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %11, %7
  %14 = phi ptr [ %.pre, %11 ], [ %5, %7 ]
  tail call void @free(ptr noundef %14) #2
  br label %15

15:                                               ; preds = %3, %1, %13
  ret i32 0
}

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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, !7, i64 584}
!6 = !{!"KINMemRec", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 24, !10, i64 32, !10, i64 40, !11, i64 48, !11, i64 52, !12, i64 56, !12, i64 64, !12, i64 72, !12, i64 80, !11, i64 88, !11, i64 92, !11, i64 96, !11, i64 100, !11, i64 104, !11, i64 108, !11, i64 112, !11, i64 116, !10, i64 120, !10, i64 128, !10, i64 136, !10, i64 144, !10, i64 152, !10, i64 160, !10, i64 168, !10, i64 176, !10, i64 184, !11, i64 192, !10, i64 200, !12, i64 208, !12, i64 216, !12, i64 224, !12, i64 232, !12, i64 240, !12, i64 248, !12, i64 256, !7, i64 264, !7, i64 272, !7, i64 280, !7, i64 288, !7, i64 296, !7, i64 304, !7, i64 312, !7, i64 320, !7, i64 328, !7, i64 336, !7, i64 344, !11, i64 352, !11, i64 356, !10, i64 360, !7, i64 368, !7, i64 376, !7, i64 384, !7, i64 392, !7, i64 400, !10, i64 408, !7, i64 416, !7, i64 424, !7, i64 432, !7, i64 440, !12, i64 448, !12, i64 456, !11, i64 464, !7, i64 472, !7, i64 480, !11, i64 488, !7, i64 496, !7, i64 504, !12, i64 512, !12, i64 520, !12, i64 528, !12, i64 536, !7, i64 544, !7, i64 552, !7, i64 560, !7, i64 568, !11, i64 576, !7, i64 584, !10, i64 592, !10, i64 600, !10, i64 608, !10, i64 616, !10, i64 624, !11, i64 632, !10, i64 640, !10, i64 648, !10, i64 656, !11, i64 664, !7, i64 672, !7, i64 680, !7, i64 688, !7, i64 696, !7, i64 704, !7, i64 712, !7, i64 720}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"double", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!"long", !8, i64 0}
!13 = !{!14, !7, i64 40}
!14 = !{!"KINLsMemRec", !11, i64 0, !11, i64 4, !11, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40, !10, i64 48, !12, i64 56, !12, i64 64, !12, i64 72, !12, i64 80, !12, i64 88, !12, i64 96, !12, i64 104, !11, i64 112, !11, i64 116, !7, i64 120, !7, i64 128, !7, i64 136, !7, i64 144, !11, i64 152, !7, i64 160, !7, i64 168, !7, i64 176}
!15 = !{!14, !7, i64 136}


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