; LLVM IR from lzyrapx/Competitive-Programming :: 51Nod/1265（计算几何）（四点共面）.ll (Z4subt6point3S_)

; 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.point3 = type { double, double, double }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z4subt6point3S_(ptr dead_on_unwind noalias writable sret(%struct.point3) align 8 %0, ptr noundef byval(%struct.point3) align 8 %1, ptr noundef byval(%struct.point3) align 8 %2) #0 {
  %4 = getelementptr inbounds %struct.point3, ptr %1, i32 0, i32 0
  %5 = load double, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.point3, ptr %2, i32 0, i32 0
  %7 = load double, ptr %6, align 8, !tbaa !5
  %8 = fsub double %5, %7
  %9 = getelementptr inbounds %struct.point3, ptr %0, i32 0, i32 0
  store double %8, ptr %9, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.point3, ptr %1, i32 0, i32 1
  %11 = load double, ptr %10, align 8, !tbaa !10
  %12 = getelementptr inbounds %struct.point3, ptr %2, i32 0, i32 1
  %13 = load double, ptr %12, align 8, !tbaa !10
  %14 = fsub double %11, %13
  %15 = getelementptr inbounds %struct.point3, ptr %0, i32 0, i32 1
  store double %14, ptr %15, align 8, !tbaa !10
  %16 = getelementptr inbounds %struct.point3, ptr %1, i32 0, i32 2
  %17 = load double, ptr %16, align 8, !tbaa !11
  %18 = getelementptr inbounds %struct.point3, ptr %2, i32 0, i32 2
  %19 = load double, ptr %18, align 8, !tbaa !11
  %20 = fsub double %17, %19
  %21 = getelementptr inbounds %struct.point3, ptr %0, i32 0, i32 2
  store double %20, ptr %21, align 8, !tbaa !11
  ret void
}

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" }

!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 = !{!"_ZTS6point3", !7, i64 0, !7, i64 8, !7, i64 16}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!6, !7, 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"

%struct.point3 = type { double, double, double }

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @_Z4subt6point3S_(ptr dead_on_unwind noalias nocapture writable writeonly sret(%struct.point3) align 8 %0, ptr nocapture noundef readonly byval(%struct.point3) align 8 %1, ptr nocapture noundef readonly byval(%struct.point3) align 8 %2) local_unnamed_addr #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
}

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" }

!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 = !{!"_ZTS6point3", !6, i64 0, !6, i64 8, !6, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,SLPVectorizerPass