; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Shapes/R3Grid.ll (ZNK6R3Grid5RangeEv)

; 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.RNInterval = type { double, double }
%class.R3Grid = type { %class.R3Affine, %class.R3Affine, double, double, ptr, [3 x i32], i32, i32, i32 }
%class.R3Affine = type { %class.R3Transformation, %class.R4Matrix, %class.R4Matrix, %class.RNFlags }
%class.R3Transformation = type { ptr }
%class.R4Matrix = type { [4 x [4 x double]] }
%class.RNFlags = type { i64 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK6R3Grid5RangeEv(ptr dead_on_unwind noalias writable sret(%class.RNInterval) align 8 %0, ptr noundef nonnull align 8 dereferenceable(592) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca double, align 8
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store double 0x47EFFFFFE0000000, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store double 0xC7EFFFFFE0000000, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %10 = getelementptr inbounds %class.R3Grid, ptr %9, i32 0, i32 4
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  store ptr %11, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !19
  br label %12

12:                                               ; preds = %37, %2
  %13 = load i32, ptr %8, align 4, !tbaa !19
  %14 = getelementptr inbounds %class.R3Grid, ptr %9, i32 0, i32 8
  %15 = load i32, ptr %14, align 4, !tbaa !20
  %16 = icmp slt i32 %13, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %40

18:                                               ; preds = %12
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = load double, ptr %19, align 8, !tbaa !9
  %21 = load double, ptr %5, align 8, !tbaa !9
  %22 = fcmp olt double %20, %21
  br i1 %22, label %23, label %26

23:                                               ; preds = %18
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = load double, ptr %24, align 8, !tbaa !9
  store double %25, ptr %5, align 8, !tbaa !9
  br label %26

26:                                               ; preds = %23, %18
  %27 = load ptr, ptr %7, align 8, !tbaa !5
  %28 = load double, ptr %27, align 8, !tbaa !9
  %29 = load double, ptr %6, align 8, !tbaa !9
  %30 = fcmp ogt double %28, %29
  br i1 %30, label %31, label %34

31:                                               ; preds = %26
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = load double, ptr %32, align 8, !tbaa !9
  store double %33, ptr %6, align 8, !tbaa !9
  br label %34

34:                                               ; preds = %31, %26
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = getelementptr inbounds double, ptr %35, i32 1
  store ptr %36, ptr %7, align 8, !tbaa !5
  br label %37

37:                                               ; preds = %34
  %38 = load i32, ptr %8, align 4, !tbaa !19
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %8, align 4, !tbaa !19
  br label %12, !llvm.loop !21

40:                                               ; preds = %17
  %41 = load double, ptr %5, align 8, !tbaa !9
  %42 = load double, ptr %6, align 8, !tbaa !9
  call void @_ZN10RNIntervalC1Edd(ptr noundef nonnull align 8 dereferenceable(16) %0, double noundef %41, double noundef %42)
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

declare void @_ZN10RNIntervalC1Edd(ptr noundef nonnull align 8 dereferenceable(16), double noundef, double noundef) unnamed_addr #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 #3 = { 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, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = !{!12, !6, i64 560}
!12 = !{!"_ZTS6R3Grid", !13, i64 0, !13, i64 272, !10, i64 544, !10, i64 552, !6, i64 560, !7, i64 568, !18, i64 580, !18, i64 584, !18, i64 588}
!13 = !{!"_ZTS8R3Affine", !14, i64 0, !15, i64 8, !15, i64 136, !16, i64 264}
!14 = !{!"_ZTS16R3Transformation"}
!15 = !{!"_ZTS8R4Matrix", !7, i64 0}
!16 = !{!"_ZTS7RNFlags", !17, i64 0}
!17 = !{!"long", !7, i64 0}
!18 = !{!"int", !7, i64 0}
!19 = !{!18, !18, i64 0}
!20 = !{!12, !18, i64 588}
!21 = distinct !{!21, !22}
!22 = !{!"llvm.loop.mustprogress"}


; 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.RNInterval = type { double, double }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK6R3Grid5RangeEv(ptr dead_on_unwind noalias writable sret(%class.RNInterval) align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(592) %1) local_unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %1, i64 588
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %6 = getelementptr inbounds i8, ptr %1, i64 560
  %7 = load ptr, ptr %6, align 8, !tbaa !17
  %xtraiter = and i32 %4, 1
  %8 = icmp eq i32 %4, 1
  br i1 %8, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %4, 2147483646
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.114.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %.114.1, %.lr.ph ]
  %.1.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %.1.1, %.lr.ph ]
  %.01119.unr = phi ptr [ %7, %.lr.ph.preheader ], [ %19, %.lr.ph ]
  %.01218.unr = phi double [ 0xC7EFFFFFE0000000, %.lr.ph.preheader ], [ %.1.1, %.lr.ph ]
  %.01317.unr = phi double [ 0x47EFFFFFE0000000, %.lr.ph.preheader ], [ %.114.1, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa
  %9 = load double, ptr %.01119.unr, align 8, !tbaa !18
  %10 = fcmp olt double %9, %.01317.unr
  %.114.epil = select i1 %10, double %9, double %.01317.unr
  %11 = fcmp ogt double %9, %.01218.unr
  %.1.epil = select i1 %11, double %9, double %.01218.unr
  br label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.loopexit.unr-lcssa, %2
  %.013.lcssa = phi double [ 0x47EFFFFFE0000000, %2 ], [ %.114.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.114.epil, %.lr.ph.epil ]
  %.012.lcssa = phi double [ 0xC7EFFFFFE0000000, %2 ], [ %.1.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %.1.epil, %.lr.ph.epil ]
  tail call void @_ZN10RNIntervalC1Edd(ptr noundef nonnull align 8 dereferenceable(16) %0, double noundef %.013.lcssa, double noundef %.012.lcssa)
  ret void

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.01119 = phi ptr [ %7, %.lr.ph.preheader.new ], [ %19, %.lr.ph ]
  %.01218 = phi double [ 0xC7EFFFFFE0000000, %.lr.ph.preheader.new ], [ %.1.1, %.lr.ph ]
  %.01317 = phi double [ 0x47EFFFFFE0000000, %.lr.ph.preheader.new ], [ %.114.1, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.1, %.lr.ph ]
  %12 = load double, ptr %.01119, align 8, !tbaa !18
  %13 = fcmp olt double %12, %.01317
  %.114 = select i1 %13, double %12, double %.01317
  %14 = fcmp ogt double %12, %.01218
  %.1 = select i1 %14, double %12, double %.01218
  %15 = getelementptr inbounds i8, ptr %.01119, i64 8
  %16 = load double, ptr %15, align 8, !tbaa !18
  %17 = fcmp olt double %16, %.114
  %.114.1 = select i1 %17, double %16, double %.114
  %18 = fcmp ogt double %16, %.1
  %.1.1 = select i1 %18, double %16, double %.1
  %19 = getelementptr inbounds i8, ptr %.01119, i64 16
  %niter.next.1 = add i32 %niter, 2
  %niter.ncmp.1 = icmp eq i32 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !19
}

declare void @_ZN10RNIntervalC1Edd(ptr noundef nonnull align 8 dereferenceable(16), double noundef, double noundef) unnamed_addr #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 = { "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, !16, i64 588}
!6 = !{!"_ZTS6R3Grid", !7, i64 0, !7, i64 272, !14, i64 544, !14, i64 552, !15, i64 560, !10, i64 568, !16, i64 580, !16, i64 584, !16, i64 588}
!7 = !{!"_ZTS8R3Affine", !8, i64 0, !9, i64 8, !9, i64 136, !12, i64 264}
!8 = !{!"_ZTS16R3Transformation"}
!9 = !{!"_ZTS8R4Matrix", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"_ZTS7RNFlags", !13, i64 0}
!13 = !{!"long", !10, i64 0}
!14 = !{!"double", !10, i64 0}
!15 = !{!"any pointer", !10, i64 0}
!16 = !{!"int", !10, i64 0}
!17 = !{!6, !15, i64 560}
!18 = !{!14, !14, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass