; LLVM IR from rdguez-mariano/fast_imas_IPOL :: libNumerics/computeH.ll (ZNK11libNumerics8ComputeH6weightEv)

; 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"

%"class.libNumerics::ComputeH" = type { i32, i32, [64 x double], [8 x double], double }

; 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: mustprogress nounwind uwtable
define dso_local noundef float @_ZNK11libNumerics8ComputeH6weightEv(ptr noundef nonnull align 8 dereferenceable(592) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  %5 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %4, i32 0, i32 0
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = icmp eq i32 %6, 6
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  br label %12

9:                                                ; preds = %1
  %10 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %4, i32 0, i32 1
  %11 = load i32, ptr %10, align 4, !tbaa !14
  br label %12

12:                                               ; preds = %9, %8
  %13 = phi i32 [ 6, %8 ], [ %11, %9 ]
  store i32 %13, ptr %3, align 4, !tbaa !15
  %14 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %4, i32 0, i32 2
  %15 = load i32, ptr %3, align 4, !tbaa !15
  %16 = sub nsw i32 %15, 1
  %17 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %4, i32 0, i32 1
  %18 = load i32, ptr %17, align 4, !tbaa !14
  %19 = add nsw i32 %18, 1
  %20 = mul nsw i32 %16, %19
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [64 x double], ptr %14, i64 0, i64 %21
  %23 = load double, ptr %22, align 8, !tbaa !16
  %24 = fptrunc double %23 to float
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret float %24
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_ZTSN11libNumerics8ComputeHE", !11, i64 0, !12, i64 4, !7, i64 8, !7, i64 520, !13, i64 584}
!11 = !{!"_ZTSN11libNumerics8ComputeH4TypeE", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"double", !7, i64 0}
!14 = !{!10, !12, i64 4}
!15 = !{!12, !12, i64 0}
!16 = !{!13, !13, i64 0}


; 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(argmem: read) uwtable
define dso_local noundef float @_ZNK11libNumerics8ComputeH6weightEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(592) %0) local_unnamed_addr #0 align 2 {
  %2 = load i32, ptr %0, align 8, !tbaa !5
  %3 = icmp eq i32 %2, 6
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4
  %6 = add nsw i32 %5, -1
  %7 = select i1 %3, i32 5, i32 %6
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = add nsw i32 %5, 1
  %10 = mul nsw i32 %7, %9
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [64 x double], ptr %8, i64 0, i64 %11
  %13 = load double, ptr %12, align 8, !tbaa !12
  %14 = fptrunc double %13 to float
  ret float %14
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 0}
!6 = !{!"_ZTSN11libNumerics8ComputeHE", !7, i64 0, !10, i64 4, !8, i64 8, !8, i64 520, !11, i64 584}
!7 = !{!"_ZTSN11libNumerics8ComputeH4TypeE", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"double", !8, i64 0}
!12 = !{!11, !11, i64 0}


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