; 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_VL1Norm_SensWrapper(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca double, align 8
  %5 = alloca double, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store double 0.000000e+00, ptr %4, align 8, !tbaa !9
  store i32 0, ptr %3, align 4, !tbaa !11
  br label %6

6:                                                ; preds = %31, %1
  %7 = load i32, ptr %3, align 4, !tbaa !11
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct._generic_N_Vector, ptr %8, i32 0, i32 0
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = getelementptr inbounds %struct._N_VectorContent_SensWrapper, ptr %10, i32 0, i32 1
  %12 = load i32, ptr %11, align 8, !tbaa !15
  %13 = icmp slt i32 %7, %12
  br i1 %13, label %14, label %34

14:                                               ; preds = %6
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct._generic_N_Vector, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  %18 = getelementptr inbounds %struct._N_VectorContent_SensWrapper, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !17
  %20 = load i32, ptr %3, align 4, !tbaa !11
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds ptr, ptr %19, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = call double @N_VL1Norm(ptr noundef %23)
  store double %24, ptr %5, align 8, !tbaa !9
  %25 = load double, ptr %5, align 8, !tbaa !9
  %26 = load double, ptr %4, align 8, !tbaa !9
  %27 = fcmp ogt double %25, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %14
  %29 = load double, ptr %5, align 8, !tbaa !9
  store double %29, ptr %4, align 8, !tbaa !9
  br label %30

30:                                               ; preds = %28, %14
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %3, align 4, !tbaa !11
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %3, align 4, !tbaa !11
  br label %6, !llvm.loop !18

34:                                               ; preds = %6
  %35 = load double, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret double %35
}

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

declare double @N_VL1Norm(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_VL1Norm_SensWrapper(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %2, i64 8
  %4 = load i32, ptr %3, align 8, !tbaa !10
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %6 = phi ptr [ %12, %.lr.ph ], [ %2, %1 ]
  %.0810 = phi double [ %.1, %.lr.ph ], [ 0.000000e+00, %1 ]
  %7 = load ptr, ptr %6, align 8, !tbaa !13
  %8 = getelementptr inbounds ptr, ptr %7, i64 %indvars.iv
  %9 = load ptr, ptr %8, align 8, !tbaa !14
  %10 = tail call double @N_VL1Norm(ptr noundef %9) #2
  %11 = fcmp ogt double %10, %.0810
  %.1 = select i1 %11, double %10, double %.0810
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %12 = load ptr, ptr %0, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %12, i64 8
  %14 = load i32, ptr %13, align 8, !tbaa !10
  %15 = sext i32 %14 to i64
  %16 = icmp slt i64 %indvars.iv.next, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !15

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.08.lcssa = phi double [ 0.000000e+00, %1 ], [ %.1, %.lr.ph ]
  ret double %.08.lcssa
}

declare double @N_VL1Norm(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