; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R2Shapes/R2Draw.ll (ZNK10R2Polyline4DrawE7RNFlags)

; 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.RNFlags = type { i64 }
%class.R2Polyline = type { %class.R2Curve, ptr, i32, %class.R2Box }
%class.R2Curve = type { %class.R2Shape }
%class.R2Shape = type { ptr }
%class.R2Box = type { %class.R2Solid, %class.R2Point, %class.R2Point }
%class.R2Solid = type { %class.R2Shape }
%class.R2Point = type { [2 x double] }

; 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: inlinehint mustprogress uwtable
declare dso_local void @_Z11R2BeginLinev() #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z11R2LoadPointRK7R2Point(ptr noundef nonnull align 8 dereferenceable(16)) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z9R2EndLinev() #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK10R2Polyline4DrawE7RNFlags(ptr noundef nonnull align 8 dereferenceable(64) %0, i64 %1) unnamed_addr #2 align 2 {
  %3 = alloca %class.RNFlags, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = getelementptr inbounds %class.RNFlags, ptr %3, i32 0, i32 0
  store i64 %1, ptr %6, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8
  call void @_Z11R2BeginLinev()
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %8

8:                                                ; preds = %20, %2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = getelementptr inbounds %class.R2Polyline, ptr %7, i32 0, i32 2
  %11 = load i32, ptr %10, align 8, !tbaa !11
  %12 = icmp slt i32 %9, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %23

14:                                               ; preds = %8
  %15 = getelementptr inbounds %class.R2Polyline, ptr %7, i32 0, i32 1
  %16 = load ptr, ptr %15, align 8, !tbaa !18
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds %class.R2Point, ptr %16, i64 %18
  call void @_Z11R2LoadPointRK7R2Point(ptr noundef nonnull align 8 dereferenceable(16) %19)
  br label %20

20:                                               ; preds = %14
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %5, align 4, !tbaa !9
  br label %8, !llvm.loop !19

23:                                               ; preds = %13
  call void @_Z9R2EndLinev()
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 = { 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 #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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"_ZTS10R2Polyline", !13, i64 0, !6, i64 8, !10, i64 16, !15, i64 24}
!13 = !{!"_ZTS7R2Curve", !14, i64 0}
!14 = !{!"_ZTS7R2Shape"}
!15 = !{!"_ZTS5R2Box", !16, i64 0, !17, i64 8, !17, i64 24}
!16 = !{!"_ZTS7R2Solid", !14, i64 0}
!17 = !{!"_ZTS7R2Point", !7, i64 0}
!18 = !{!12, !6, i64 8}
!19 = distinct !{!19, !20}
!20 = !{!"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.R2Point = type { [2 x double] }

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z11R2BeginLinev() local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z11R2LoadPointRK7R2Point(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_Z9R2EndLinev() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK10R2Polyline4DrawE7RNFlags(ptr nocapture noundef nonnull readonly align 8 dereferenceable(64) %0, i64 %1) unnamed_addr #1 align 2 {
  tail call void @_Z11R2BeginLinev()
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i32, ptr %3, align 8, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  br label %7

._crit_edge:                                      ; preds = %7, %2
  tail call void @_Z9R2EndLinev()
  ret void

7:                                                ; preds = %.lr.ph, %7
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %7 ]
  %8 = load ptr, ptr %6, align 8, !tbaa !16
  %9 = getelementptr inbounds %class.R2Point, ptr %8, i64 %indvars.iv
  tail call void @_Z11R2LoadPointRK7R2Point(ptr noundef nonnull align 8 dereferenceable(16) %9)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = load i32, ptr %3, align 8, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = icmp slt i64 %indvars.iv.next, %11
  br i1 %12, label %7, label %._crit_edge, !llvm.loop !17
}

attributes #0 = { inlinehint 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 = { 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, !12, i64 16}
!6 = !{!"_ZTS10R2Polyline", !7, i64 0, !9, i64 8, !12, i64 16, !13, i64 24}
!7 = !{!"_ZTS7R2Curve", !8, i64 0}
!8 = !{!"_ZTS7R2Shape"}
!9 = !{!"any pointer", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"int", !10, i64 0}
!13 = !{!"_ZTS5R2Box", !14, i64 0, !15, i64 8, !15, i64 24}
!14 = !{!"_ZTS7R2Solid", !8, i64 0}
!15 = !{!"_ZTS7R2Point", !10, i64 0}
!16 = !{!6, !9, i64 8}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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