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

; 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._SUNMemoryHelper = type { ptr, ptr, ptr }
%struct._SUNMemoryHelper_Ops = type { ptr, ptr, ptr, ptr, ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local i32 @SUNMemoryHelper_ImplementsRequiredOps(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 = getelementptr inbounds %struct._SUNMemoryHelper, ptr %4, i32 0, i32 1
  %6 = load ptr, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %struct._SUNMemoryHelper_Ops, ptr %6, i32 0, i32 0
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  %9 = icmp eq ptr %8, null
  br i1 %9, label %24, label %10

10:                                               ; preds = %1
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct._SUNMemoryHelper, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct._SUNMemoryHelper_Ops, ptr %13, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = icmp eq ptr %15, null
  br i1 %16, label %24, label %17

17:                                               ; preds = %10
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct._SUNMemoryHelper, ptr %18, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct._SUNMemoryHelper_Ops, ptr %20, i32 0, i32 2
  %22 = load ptr, ptr %21, align 8, !tbaa !14
  %23 = icmp eq ptr %22, null
  br i1 %23, label %24, label %25

24:                                               ; preds = %17, %10, %1
  store i32 0, ptr %2, align 4
  br label %26

25:                                               ; preds = %17
  store i32 1, ptr %2, align 4
  br label %26

26:                                               ; preds = %25, %24
  %27 = load i32, ptr %2, align 4
  ret i32 %27
}

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" }

!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 8}
!10 = !{!"_SUNMemoryHelper", !6, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!12, !6, i64 0}
!12 = !{!"_SUNMemoryHelper_Ops", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !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 nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @SUNMemoryHelper_ImplementsRequiredOps(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !10
  %5 = icmp eq ptr %4, null
  br i1 %5, label %14, label %6

6:                                                ; preds = %1
  %7 = getelementptr inbounds i8, ptr %3, i64 8
  %8 = load ptr, ptr %7, align 8, !tbaa !12
  %9 = icmp eq ptr %8, null
  br i1 %9, label %14, label %10

10:                                               ; preds = %6
  %11 = getelementptr inbounds i8, ptr %3, i64 16
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  %13 = icmp ne ptr %12, null
  %spec.select = zext i1 %13 to i32
  br label %14

14:                                               ; preds = %10, %1, %6
  %.0 = phi i32 [ 0, %6 ], [ 0, %1 ], [ %spec.select, %10 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: 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" }

!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 = !{!"_SUNMemoryHelper", !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 0}
!11 = !{!"_SUNMemoryHelper_Ops", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40}
!12 = !{!11, !7, i64 8}
!13 = !{!11, !7, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass