; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (quadrature)

; 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.adaptive_integration_tree_node = type { double, double, ptr, ptr, i32, ptr, ptr }

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

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

; Function Attrs: nounwind uwtable
define dso_local double @get_integral(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca double, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  %7 = alloca double, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %9, i32 0, i32 4
  %11 = load i32, ptr %10, align 8, !tbaa !11
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp sle i32 %11, %12
  br i1 %13, label %14, label %18

14:                                               ; preds = %2
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %15, i32 0, i32 0
  %17 = load double, ptr %16, align 8, !tbaa !14
  store double %17, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %32

18:                                               ; preds = %2
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %19, i32 0, i32 5
  %21 = load ptr, ptr %20, align 8, !tbaa !15
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = call double @get_integral(ptr noundef %21, i32 noundef %22)
  store double %23, ptr %6, align 8, !tbaa !16
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.adaptive_integration_tree_node, ptr %24, i32 0, i32 6
  %26 = load ptr, ptr %25, align 8, !tbaa !17
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = call double @get_integral(ptr noundef %26, i32 noundef %27)
  store double %28, ptr %7, align 8, !tbaa !16
  %29 = load double, ptr %6, align 8, !tbaa !16
  %30 = load double, ptr %7, align 8, !tbaa !16
  %31 = fadd double %29, %30
  store double %31, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %32

32:                                               ; preds = %18, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %33 = load double, ptr %3, align 8
  ret double %33
}

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 = { 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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 32}
!12 = !{!"adaptive_integration_tree_node", !13, i64 0, !13, i64 8, !6, i64 16, !6, i64 24, !10, i64 32, !6, i64 40, !6, i64 48}
!13 = !{!"double", !7, i64 0}
!14 = !{!12, !13, i64 0}
!15 = !{!12, !6, i64 40}
!16 = !{!13, !13, i64 0}
!17 = !{!12, !6, i64 48}


; 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: nofree nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local double @get_integral(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 32
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %.not = icmp sgt i32 %4, %1
  br i1 %.not, label %6, label %common.ret

common.ret:                                       ; preds = %2
  %5 = load double, ptr %0, align 8, !tbaa !12
  br label %common.ret10

common.ret10:                                     ; preds = %6, %common.ret
  %common.ret10.op = phi double [ %5, %common.ret ], [ %13, %6 ]
  ret double %common.ret10.op

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 40
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  %9 = tail call double @get_integral(ptr noundef %8, i32 noundef %1)
  %10 = getelementptr inbounds i8, ptr %0, i64 48
  %11 = load ptr, ptr %10, align 8, !tbaa !14
  %12 = tail call double @get_integral(ptr noundef %11, i32 noundef %1)
  %13 = fadd double %9, %12
  br label %common.ret10
}

attributes #0 = { nofree nosync nounwind 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, !11, i64 32}
!6 = !{!"adaptive_integration_tree_node", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 24, !11, i64 32, !10, i64 40, !10, i64 48}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !7, i64 0}
!13 = !{!6, !10, i64 40}
!14 = !{!6, !10, i64 48}


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