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

; 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_Ops = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr }
%struct._generic_SUNLinearSolver = type { ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @SUNLinSolNewEmpty(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %61

10:                                               ; preds = %1
  store ptr null, ptr %4, align 8, !tbaa !5
  %11 = call noalias ptr @malloc(i64 noundef 24) #5
  store ptr %11, ptr %4, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = icmp eq ptr %12, null
  br i1 %13, label %14, label %15

14:                                               ; preds = %10
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %61

15:                                               ; preds = %10
  store ptr null, ptr %5, align 8, !tbaa !5
  %16 = call noalias ptr @malloc(i64 noundef 120) #5
  store ptr %16, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = icmp eq ptr %17, null
  br i1 %18, label %19, label %21

19:                                               ; preds = %15
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  call void @free(ptr noundef %20) #4
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %61

21:                                               ; preds = %15
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %22, i32 0, i32 0
  store ptr null, ptr %23, align 8, !tbaa !9
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %24, i32 0, i32 1
  store ptr null, ptr %25, align 8, !tbaa !11
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %26, i32 0, i32 2
  store ptr null, ptr %27, align 8, !tbaa !12
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %28, i32 0, i32 3
  store ptr null, ptr %29, align 8, !tbaa !13
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %30, i32 0, i32 4
  store ptr null, ptr %31, align 8, !tbaa !14
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %32, i32 0, i32 5
  store ptr null, ptr %33, align 8, !tbaa !15
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %34, i32 0, i32 6
  store ptr null, ptr %35, align 8, !tbaa !16
  %36 = load ptr, ptr %5, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %36, i32 0, i32 7
  store ptr null, ptr %37, align 8, !tbaa !17
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %38, i32 0, i32 8
  store ptr null, ptr %39, align 8, !tbaa !18
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %40, i32 0, i32 9
  store ptr null, ptr %41, align 8, !tbaa !19
  %42 = load ptr, ptr %5, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %42, i32 0, i32 10
  store ptr null, ptr %43, align 8, !tbaa !20
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %44, i32 0, i32 13
  store ptr null, ptr %45, align 8, !tbaa !21
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  %47 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %46, i32 0, i32 11
  store ptr null, ptr %47, align 8, !tbaa !22
  %48 = load ptr, ptr %5, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %48, i32 0, i32 12
  store ptr null, ptr %49, align 8, !tbaa !23
  %50 = load ptr, ptr %5, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct._generic_SUNLinearSolver_Ops, ptr %50, i32 0, i32 14
  store ptr null, ptr %51, align 8, !tbaa !24
  %52 = load ptr, ptr %5, align 8, !tbaa !5
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %53, i32 0, i32 1
  store ptr %52, ptr %54, align 8, !tbaa !25
  %55 = load ptr, ptr %4, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %55, i32 0, i32 0
  store ptr null, ptr %56, align 8, !tbaa !27
  %57 = load ptr, ptr %3, align 8, !tbaa !5
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct._generic_SUNLinearSolver, ptr %58, i32 0, i32 2
  store ptr %57, ptr %59, align 8, !tbaa !28
  %60 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %60, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %61

61:                                               ; preds = %21, %19, %14, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #4
  %62 = load ptr, ptr %2, align 8
  ret ptr %62
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

; 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 allocsize(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 #3 = { 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 #4 = { nounwind }
attributes #5 = { nounwind allocsize(0) }

!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_Ops", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88, !6, i64 96, !6, i64 104, !6, i64 112}
!11 = !{!10, !6, i64 8}
!12 = !{!10, !6, i64 16}
!13 = !{!10, !6, i64 24}
!14 = !{!10, !6, i64 32}
!15 = !{!10, !6, i64 40}
!16 = !{!10, !6, i64 48}
!17 = !{!10, !6, i64 56}
!18 = !{!10, !6, i64 64}
!19 = !{!10, !6, i64 72}
!20 = !{!10, !6, i64 80}
!21 = !{!10, !6, i64 104}
!22 = !{!10, !6, i64 88}
!23 = !{!10, !6, i64 96}
!24 = !{!10, !6, i64 112}
!25 = !{!26, !6, i64 8}
!26 = !{!"_generic_SUNLinearSolver", !6, i64 0, !6, i64 8, !6, i64 16}
!27 = !{!26, !6, i64 0}
!28 = !{!26, !6, i64 16}


; 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 memory(readwrite, argmem: none) uwtable
define dso_local noalias noundef ptr @SUNLinSolNewEmpty(ptr noundef %0) local_unnamed_addr #0 {
  %2 = icmp eq ptr %0, null
  br i1 %2, label %12, label %3

3:                                                ; preds = %1
  %4 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #4
  %5 = icmp eq ptr %4, null
  br i1 %5, label %12, label %6

6:                                                ; preds = %3
  %calloc = tail call dereferenceable_or_null(120) ptr @calloc(i64 1, i64 120)
  %7 = icmp eq ptr %calloc, null
  br i1 %7, label %8, label %9

8:                                                ; preds = %6
  tail call void @free(ptr noundef nonnull %4) #5
  br label %12

9:                                                ; preds = %6
  %10 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %calloc, ptr %10, align 8, !tbaa !5
  store ptr null, ptr %4, align 8, !tbaa !10
  %11 = getelementptr inbounds i8, ptr %4, i64 16
  store ptr %0, ptr %11, align 8, !tbaa !11
  br label %12

12:                                               ; preds = %3, %1, %9, %8
  %.0 = phi ptr [ null, %8 ], [ %4, %9 ], [ null, %1 ], [ null, %3 ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #3

attributes #0 = { mustprogress nounwind willreturn memory(readwrite, argmem: 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" }
attributes #1 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(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 = { 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 #3 = { nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { 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 8}
!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 = !{!6, !7, i64 0}
!11 = !{!6, !7, i64 16}


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