; LLVM IR from stan-dev/math :: lib/sundials_6.1.1/src/sunlinsol/band (sunlinsol_band)

; 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._generic_SUNLinearSolver = type { ptr, ptr, ptr }
%struct._SUNLinearSolverContent_Band = type { i64, ptr, i64 }

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

6:                                                ; preds = %1
  store i32 0, ptr %2, align 4
  br label %48

7:                                                ; preds = %1
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %35

12:                                               ; preds = %7
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = getelementptr inbounds %struct._SUNLinearSolverContent_Band, ptr %15, i32 0, i32 1
  %17 = load ptr, ptr %16, align 8, !tbaa !11
  %18 = icmp ne ptr %17, null
  br i1 %18, label %19, label %29

19:                                               ; preds = %12
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct._SUNLinearSolverContent_Band, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  call void @free(ptr noundef %24) #2
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !9
  %28 = getelementptr inbounds %struct._SUNLinearSolverContent_Band, ptr %27, i32 0, i32 1
  store ptr null, ptr %28, align 8, !tbaa !11
  br label %29

29:                                               ; preds = %19, %12
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  call void @free(ptr noundef %32) #2
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %33, i32 0, i32 0
  store ptr null, ptr %34, align 8, !tbaa !9
  br label %35

35:                                               ; preds = %29, %7
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  %39 = icmp ne ptr %38, null
  br i1 %39, label %40, label %46

40:                                               ; preds = %35
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %41, i32 0, i32 1
  %43 = load ptr, ptr %42, align 8, !tbaa !14
  call void @free(ptr noundef %43) #2
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %44, i32 0, i32 1
  store ptr null, ptr %45, align 8, !tbaa !14
  br label %46

46:                                               ; preds = %40, %35
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  call void @free(ptr noundef %47) #2
  store ptr null, ptr %3, align 8, !tbaa !5
  store i32 0, ptr %2, align 4
  br label %48

48:                                               ; preds = %46, %6
  %49 = load i32, ptr %2, align 4
  ret i32 %49
}

; Function Attrs: nounwind
declare void @free(ptr noundef) #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 = { 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 = { 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 0}
!10 = !{!"_generic_SUNLinearSolver", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!12, !6, i64 8}
!12 = !{!"_SUNLinearSolverContent_Band", !13, i64 0, !6, i64 8, !13, i64 16}
!13 = !{!"long", !7, i64 0}
!14 = !{!10, !6, i64 8}


; 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 nounwind willreturn uwtable
define dso_local noundef i32 @SUNLinSolFree_Band(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %18, label %3

3:                                                ; preds = %1
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %13, label %5

5:                                                ; preds = %3
  %6 = getelementptr inbounds i8, ptr %4, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !10
  %.not14 = icmp eq ptr %7, null
  br i1 %.not14, label %11, label %8

8:                                                ; preds = %5
  tail call void @free(ptr noundef nonnull %7) #2
  %9 = load ptr, ptr %0, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  store ptr null, ptr %10, align 8, !tbaa !10
  br label %11

11:                                               ; preds = %8, %5
  %12 = phi ptr [ %9, %8 ], [ %4, %5 ]
  tail call void @free(ptr noundef nonnull %12) #2
  store ptr null, ptr %0, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %11, %3
  %14 = getelementptr inbounds i8, ptr %0, i64 8
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %.not15 = icmp eq ptr %15, null
  br i1 %.not15, label %17, label %16

16:                                               ; preds = %13
  tail call void @free(ptr noundef nonnull %15) #2
  br label %17

17:                                               ; preds = %16, %13
  tail call void @free(ptr noundef nonnull %0) #2
  br label %18

18:                                               ; preds = %1, %17
  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 = { mustprogress nounwind willreturn 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 0}
!6 = !{!"_generic_SUNLinearSolver", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 8}
!11 = !{!"_SUNLinearSolverContent_Band", !12, i64 0, !7, i64 8, !12, i64 16}
!12 = !{!"long", !8, i64 0}
!13 = !{!6, !7, i64 8}


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