; LLVM IR from imeplusplus/icpc-notebook :: geometry/basics.ll (Z9direction5pointS_S_)

; 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.point = type { x86_fp80, x86_fp80 }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z9direction5pointS_S_(ptr noundef byval(%struct.point) align 16 %0, ptr noundef byval(%struct.point) align 16 %1, ptr noundef byval(%struct.point) align 16 %2) #0 {
  %4 = alloca %struct.point, align 16
  %5 = alloca %struct.point, align 16
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %4, ptr align 16 %0, i64 32, i1 false), !tbaa.struct !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %5, ptr align 16 %2, i64 32, i1 false), !tbaa.struct !5
  %6 = call noundef i32 @_ZN5point3dirES_S_(ptr noundef nonnull align 16 dereferenceable(32) %1, ptr noundef byval(%struct.point) align 16 %4, ptr noundef byval(%struct.point) align 16 %5)
  ret i32 %6
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN5point3dirES_S_(ptr noundef nonnull align 16 dereferenceable(32), ptr noundef byval(%struct.point) align 16, ptr noundef byval(%struct.point) align 16) #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }

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


; 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.point = type { x86_fp80, x86_fp80 }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z9direction5pointS_S_(ptr nocapture noundef readonly byval(%struct.point) align 16 %0, ptr noundef nonnull byval(%struct.point) align 16 %1, ptr nocapture noundef readonly byval(%struct.point) align 16 %2) local_unnamed_addr #0 {
  %4 = call noundef i32 @_ZN5point3dirES_S_(ptr noundef nonnull align 16 dereferenceable(32) %1, ptr noundef nonnull byval(%struct.point) align 16 %0, ptr noundef nonnull byval(%struct.point) align 16 %2)
  ret i32 %4
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN5point3dirES_S_(ptr noundef nonnull align 16 dereferenceable(32), ptr noundef byval(%struct.point) align 16, ptr noundef byval(%struct.point) align 16) local_unnamed_addr #0 align 2

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)"}


; Effective O3 passes: DSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass