; LLVM IR from chachaxw/data-structure-and-algorithm :: cpp_basics/operator_overload.ll (ZN16OperatorOverloadmiERKS_)

; 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.OperatorOverload = type { double, double, double }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN16OperatorOverloadmiERKS_(ptr dead_on_unwind noalias writable sret(%class.OperatorOverload) align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i1, align 1
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8
  store i1 false, ptr %7, align 1
  call void @_ZN16OperatorOverloadC1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %9 = getelementptr inbounds %class.OperatorOverload, ptr %8, i32 0, i32 0
  %10 = load double, ptr %9, align 8, !tbaa !9
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = getelementptr inbounds %class.OperatorOverload, ptr %11, i32 0, i32 0
  %13 = load double, ptr %12, align 8, !tbaa !9
  %14 = fsub double %10, %13
  %15 = getelementptr inbounds %class.OperatorOverload, ptr %0, i32 0, i32 0
  store double %14, ptr %15, align 8, !tbaa !9
  %16 = getelementptr inbounds %class.OperatorOverload, ptr %8, i32 0, i32 1
  %17 = load double, ptr %16, align 8, !tbaa !12
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds %class.OperatorOverload, ptr %18, i32 0, i32 1
  %20 = load double, ptr %19, align 8, !tbaa !12
  %21 = fsub double %17, %20
  %22 = getelementptr inbounds %class.OperatorOverload, ptr %0, i32 0, i32 1
  store double %21, ptr %22, align 8, !tbaa !12
  %23 = getelementptr inbounds %class.OperatorOverload, ptr %8, i32 0, i32 2
  %24 = load double, ptr %23, align 8, !tbaa !13
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = getelementptr inbounds %class.OperatorOverload, ptr %25, i32 0, i32 2
  %27 = load double, ptr %26, align 8, !tbaa !13
  %28 = fsub double %24, %27
  %29 = getelementptr inbounds %class.OperatorOverload, ptr %0, i32 0, i32 2
  store double %28, ptr %29, align 8, !tbaa !13
  store i1 true, ptr %7, align 1
  %30 = load i1, ptr %7, align 1
  br i1 %30, label %32, label %31

31:                                               ; preds = %3
  call void @_ZN16OperatorOverloadD1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  br label %32

32:                                               ; preds = %31, %3
  ret void
}

declare void @_ZN16OperatorOverloadC1Ev(ptr)

declare void @_ZN16OperatorOverloadD1Ev(ptr)

attributes #0 = { mustprogress 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 = { 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 = !{!"_ZTS16OperatorOverload", !11, i64 0, !11, i64 8, !11, i64 16}
!11 = !{!"double", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!10, !11, i64 16}


; 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"

%class.OperatorOverload = type { double, double, double }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN16OperatorOverloadmiERKS_(ptr dead_on_unwind noalias writable sret(%class.OperatorOverload) align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %1, ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %2) local_unnamed_addr #0 align 2 {
  tail call void @_ZN16OperatorOverloadC1Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %4 = load <2 x double>, ptr %1, align 8, !tbaa !5
  %5 = load <2 x double>, ptr %2, align 8, !tbaa !5
  %6 = fsub <2 x double> %4, %5
  store <2 x double> %6, ptr %0, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 16
  %8 = load double, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds i8, ptr %2, i64 16
  %10 = load double, ptr %9, align 8, !tbaa !9
  %11 = fsub double %8, %10
  %12 = getelementptr inbounds i8, ptr %0, i64 16
  store double %11, ptr %12, align 8, !tbaa !9
  ret void
}

declare void @_ZN16OperatorOverloadC1Ev(ptr) local_unnamed_addr

attributes #0 = { mustprogress 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, !6, i64 0}
!6 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 16}
!10 = !{!"_ZTS16OperatorOverload", !6, i64 0, !6, i64 8, !6, i64 16}


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