; LLVM IR from o0o0o0o0o0o0o/image-processing-from-scratch :: ImageMatting/Eigen/bench/tensors/benchmark_main.ll (ZN7testing9Benchmark5RangeEii)

; 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.testing::Benchmark" = type { ptr, ptr, ptr, %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN7testing9Benchmark5RangeEii(ptr noundef nonnull align 8 dereferenceable(48) %0, i32 noundef %1, i32 noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 8, ptr %7, align 4, !tbaa !9
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %13, label %17

13:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %14 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %14, ptr %8, align 4, !tbaa !9
  %15 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %15, ptr %6, align 4, !tbaa !9
  %16 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %16, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %17

17:                                               ; preds = %13, %3
  br label %18

18:                                               ; preds = %22, %17
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = icmp slt i32 %19, %20
  br i1 %21, label %22, label %26

22:                                               ; preds = %18
  %23 = getelementptr inbounds %"class.testing::Benchmark", ptr %9, i32 0, i32 3
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %23, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = mul nsw i32 %24, 8
  store i32 %25, ptr %5, align 4, !tbaa !9
  br label %18, !llvm.loop !11

26:                                               ; preds = %18
  %27 = getelementptr inbounds %"class.testing::Benchmark", ptr %9, i32 0, i32 3
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %27, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret ptr %9
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"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 = distinct !{!11, !12}
!12 = !{!"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"

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull ptr @_ZN7testing9Benchmark5RangeEii(ptr noundef nonnull returned align 8 dereferenceable(48) %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %1, ptr %4, align 4, !tbaa !5
  store i32 %2, ptr %5, align 4, !tbaa !5
  %6 = icmp slt i32 %2, %1
  br i1 %6, label %7, label %8

7:                                                ; preds = %3
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %4, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %7, %3
  %9 = phi i32 [ %1, %7 ], [ %2, %3 ]
  %10 = phi i32 [ %2, %7 ], [ %1, %3 ]
  %11 = icmp slt i32 %10, %9
  br i1 %11, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %8
  %12 = getelementptr inbounds i8, ptr %0, i64 24
  br label %13

13:                                               ; preds = %.lr.ph, %13
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %12, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = shl nsw i32 %14, 3
  store i32 %15, ptr %4, align 4, !tbaa !5
  %16 = icmp slt i32 %15, %9
  br i1 %16, label %13, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %13, %8
  %17 = getelementptr inbounds i8, ptr %0, i64 24
  call void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef nonnull align 4 dereferenceable(4) %5)
  ret ptr %0
}

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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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