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

; 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_N_Vector = type { ptr, ptr, ptr }
%struct._N_VectorContent_SensWrapper = type { ptr, i32, i32 }

; 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 double @N_VDotProd_SensWrapper(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store double 0.000000e+00, ptr %6, align 8, !tbaa !9
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %7

7:                                                ; preds = %37, %2
  %8 = load i32, ptr %5, align 4, !tbaa !11
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct._generic_N_Vector, ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  %12 = getelementptr inbounds %struct._N_VectorContent_SensWrapper, ptr %11, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !15
  %14 = icmp slt i32 %8, %13
  br i1 %14, label %15, label %40

15:                                               ; preds = %7
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct._generic_N_Vector, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  %19 = getelementptr inbounds %struct._N_VectorContent_SensWrapper, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !17
  %21 = load i32, ptr %5, align 4, !tbaa !11
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds ptr, ptr %20, i64 %22
  %24 = load ptr, ptr %23, align 8, !tbaa !5
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct._generic_N_Vector, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = getelementptr inbounds %struct._N_VectorContent_SensWrapper, ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !17
  %30 = load i32, ptr %5, align 4, !tbaa !11
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds ptr, ptr %29, i64 %31
  %33 = load ptr, ptr %32, align 8, !tbaa !5
  %34 = call double @N_VDotProd(ptr noundef %24, ptr noundef %33)
  %35 = load double, ptr %6, align 8, !tbaa !9
  %36 = fadd double %35, %34
  store double %36, ptr %6, align 8, !tbaa !9
  br label %37

37:                                               ; preds = %15
  %38 = load i32, ptr %5, align 4, !tbaa !11
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %5, align 4, !tbaa !11
  br label %7, !llvm.loop !18

40:                                               ; preds = %7
  %41 = load double, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret double %41
}

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

declare double @N_VDotProd(ptr noundef, ptr noundef) #2

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 = { "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, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 0}
!14 = !{!"_generic_N_Vector", !6, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!16, !12, i64 8}
!16 = !{!"_N_VectorContent_SensWrapper", !6, i64 0, !12, i64 8, !12, i64 12}
!17 = !{!16, !6, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"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"

; Function Attrs: nounwind uwtable
define dso_local double @N_VDotProd_SensWrapper(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %3, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !10
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %2 ]
  %7 = phi ptr [ %17, %.lr.ph ], [ %3, %2 ]
  %.010 = phi double [ %16, %.lr.ph ], [ 0.000000e+00, %2 ]
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  %9 = getelementptr inbounds ptr, ptr %8, i64 %indvars.iv
  %10 = load ptr, ptr %9, align 8, !tbaa !14
  %11 = load ptr, ptr %1, align 8, !tbaa !5
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  %13 = getelementptr inbounds ptr, ptr %12, i64 %indvars.iv
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %15 = tail call double @N_VDotProd(ptr noundef %10, ptr noundef %14) #2
  %16 = fadd double %.010, %15
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %17 = load ptr, ptr %0, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 8
  %19 = load i32, ptr %18, align 8, !tbaa !10
  %20 = sext i32 %19 to i64
  %21 = icmp slt i64 %indvars.iv.next, %20
  br i1 %21, label %.lr.ph, label %._crit_edge, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph, %2
  %.0.lcssa = phi double [ 0.000000e+00, %2 ], [ %16, %.lr.ph ]
  ret double %.0.lcssa
}

declare double @N_VDotProd(ptr noundef, ptr 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 = { "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_N_Vector", !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, !12, i64 8}
!11 = !{!"_N_VectorContent_SensWrapper", !7, i64 0, !12, i64 8, !12, i64 12}
!12 = !{!"int", !8, i64 0}
!13 = !{!11, !7, i64 0}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass