; LLVM IR from rdguez-mariano/fast_imas_IPOL :: libNumerics/computeH.ll (ZN11libNumerics8ComputeH5clearEv)

; 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: mustprogress nounwind uwtable
define dso_local void @_ZN11libNumerics8ComputeH5clearEv(ptr noundef nonnull align 8 dereferenceable(592) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 2
  %5 = getelementptr inbounds [64 x double], ptr %4, i64 0, i64 0
  %6 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 1
  %7 = load i32, ptr %6, align 4, !tbaa !9
  %8 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 1
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = mul nsw i32 %7, %9
  %11 = sext i32 %10 to i64
  %12 = mul i64 %11, 8
  call void @llvm.memset.p0.i64(ptr align 8 %5, i8 0, i64 %12, i1 false)
  %13 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 3
  %14 = getelementptr inbounds [8 x double], ptr %13, i64 0, i64 0
  %15 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 1
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = mul i64 %17, 8
  call void @llvm.memset.p0.i64(ptr align 8 %14, i8 0, i64 %18, i1 false)
  %19 = getelementptr inbounds %"class.libNumerics::ComputeH", ptr %3, i32 0, i32 4
  store double 0.000000e+00, ptr %19, align 8, !tbaa !14
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { 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 #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !12, i64 4}
!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, !13, i64 584}


; 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: readwrite) uwtable
define dso_local void @_ZN11libNumerics8ComputeH5clearEv(ptr nocapture noundef nonnull align 8 dereferenceable(592) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = getelementptr inbounds i8, ptr %0, i64 4
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = mul nsw i32 %4, %4
  %6 = zext nneg i32 %5 to i64
  %7 = shl nuw nsw i64 %6, 3
  tail call void @llvm.memset.p0.i64(ptr nonnull align 8 %2, i8 0, i64 %7, i1 false)
  %8 = getelementptr inbounds i8, ptr %0, i64 520
  %9 = sext i32 %4 to i64
  %10 = shl nsw i64 %9, 3
  tail call void @llvm.memset.p0.i64(ptr nonnull align 8 %8, i8 0, i64 %10, i1 false)
  %11 = getelementptr inbounds i8, ptr %0, i64 584
  store double 0.000000e+00, ptr %11, align 8, !tbaa !12
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !10, i64 4}
!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 = !{!6, !11, i64 584}


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