; LLVM IR from osmart/hole2 :: src/retired_routines (surface)

; 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"

@tri_count = external dso_local global i32, align 4
@tri = external dso_local global [30000 x [5 x i32]], align 16

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

; Function Attrs: nounwind uwtable
define dso_local i32 @check_point(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %31, %1
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr @tri_count, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %11, label %34

11:                                               ; preds = %7
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %27, %11
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 3
  br i1 %14, label %15, label %30

15:                                               ; preds = %12
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [30000 x [5 x i32]], ptr @tri, i64 0, i64 %18
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [5 x i32], ptr %19, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = icmp eq i32 %16, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %15
  store i32 1, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %35

26:                                               ; preds = %15
  br label %27

27:                                               ; preds = %26
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %5, align 4, !tbaa !5
  br label %12, !llvm.loop !9

30:                                               ; preds = %12
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %4, align 4, !tbaa !5
  br label %7, !llvm.loop !11

34:                                               ; preds = %7
  store i32 0, ptr %2, align 4
  store i32 1, ptr %6, align 4
  br label %35

35:                                               ; preds = %34, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %36 = load i32, ptr %2, align 4
  ret i32 %36
}

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@tri_count = external dso_local local_unnamed_addr global i32, align 4
@tri = external dso_local local_unnamed_addr global [30000 x [5 x i32]], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local range(i32 0, 2) i32 @check_point(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @tri_count, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.preheader.preheader, label %.loopexit

.preheader.preheader:                             ; preds = %1
  %wide.trip.count = zext nneg i32 %2 to i64
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %15
  %indvars.iv = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next, %15 ]
  %4 = getelementptr inbounds [30000 x [5 x i32]], ptr @tri, i64 0, i64 %indvars.iv, i64 0
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = icmp eq i32 %5, %0
  br i1 %6, label %.loopexit, label %7

7:                                                ; preds = %.preheader
  %8 = getelementptr inbounds [30000 x [5 x i32]], ptr @tri, i64 0, i64 %indvars.iv, i64 1
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = icmp eq i32 %9, %0
  br i1 %10, label %.loopexit, label %11

11:                                               ; preds = %7
  %12 = getelementptr inbounds [30000 x [5 x i32]], ptr @tri, i64 0, i64 %indvars.iv, i64 2
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = icmp eq i32 %13, %0
  br i1 %14, label %.loopexit, label %15

15:                                               ; preds = %11
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.loopexit, label %.preheader, !llvm.loop !9

.loopexit:                                        ; preds = %15, %.preheader, %7, %11, %1
  %.09 = phi i32 [ 0, %1 ], [ 0, %15 ], [ 1, %.preheader ], [ 1, %7 ], [ 1, %11 ]
  ret i32 %.09
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: none, inaccessiblemem: none) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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