; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ/1007.ll (Z8compare1RK5pointS1_)

; 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 { double, double }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z8compare1RK5pointS1_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.point, ptr %6, i32 0, i32 0
  %8 = load double, ptr %7, align 8, !tbaa !9
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.point, ptr %9, i32 0, i32 0
  %11 = load double, ptr %10, align 8, !tbaa !9
  %12 = fsub double %8, %11
  %13 = call double @llvm.fabs.f64(double %12)
  %14 = fcmp olt double %13, 1.000000e-08
  br i1 %14, label %15, label %23

15:                                               ; preds = %2
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.point, ptr %16, i32 0, i32 1
  %18 = load double, ptr %17, align 8, !tbaa !12
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.point, ptr %19, i32 0, i32 1
  %21 = load double, ptr %20, align 8, !tbaa !12
  %22 = fcmp olt double %18, %21
  store i1 %22, ptr %3, align 1
  br label %31

23:                                               ; preds = %2
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.point, ptr %24, i32 0, i32 0
  %26 = load double, ptr %25, align 8, !tbaa !9
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.point, ptr %27, i32 0, i32 0
  %29 = load double, ptr %28, align 8, !tbaa !9
  %30 = fcmp olt double %26, %29
  store i1 %30, ptr %3, align 1
  br label %31

31:                                               ; preds = %23, %15
  %32 = load i1, ptr %3, align 1
  ret i1 %32
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #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 nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"_ZTS5point", !11, i64 0, !11, i64 8}
!11 = !{!"double", !7, i64 0}
!12 = !{!10, !11, i64 8}


; 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 zeroext i1 @_Z8compare1RK5pointS1_(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %1) local_unnamed_addr #0 {
  %3 = load double, ptr %0, align 8, !tbaa !5
  %4 = load double, ptr %1, align 8, !tbaa !5
  %5 = fsub double %3, %4
  %6 = tail call double @llvm.fabs.f64(double %5)
  %7 = fcmp olt double %6, 1.000000e-08
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load double, ptr %8, align 8
  %10 = getelementptr inbounds i8, ptr %1, i64 8
  %11 = load double, ptr %10, align 8
  %12 = fcmp olt double %9, %11
  %13 = fcmp olt double %3, %4
  %.0 = select i1 %7, i1 %12, i1 %13
  ret i1 %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fabs.f64(double) #1

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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 = !{!"_ZTS5point", !7, i64 0, !7, i64 8}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}


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