; LLVM IR from Mohammed-Shoaib/Coding-Problems :: Gulf Programming Contest/2017/pyramid (pyramid)

; 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.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::allocator.5" = type { i8 }

@.str = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7computeiiRSt6vectorIS_IxSaIxEESaIS1_EE(i32 noundef, i32 noundef, ptr noundef nonnull align 8 dereferenceable(24)) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7pyramidB5cxx11iRSt6vectorIS_IxSaIxEESaIS1_EE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i32 noundef %1, ptr noundef nonnull align 8 dereferenceable(24) %2) #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::allocator.5", align 1
  %12 = alloca i1, align 1
  %13 = alloca i1, align 1
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  store ptr %0, ptr %4, align 8
  store i32 %1, ptr %5, align 4, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 1, ptr %7, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %46, %3
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = icmp sle i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %49

21:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sub nsw i32 %22, 1
  store i32 %23, ptr %9, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %42, %21
  %25 = load i32, ptr %9, align 4, !tbaa !5
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %28, label %27

27:                                               ; preds = %24
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %45

28:                                               ; preds = %24
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %38, %28
  %30 = load i32, ptr %10, align 4, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !5
  %32 = icmp slt i32 %30, %31
  br i1 %32, label %34, label %33

33:                                               ; preds = %29
  store i32 8, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %41

34:                                               ; preds = %29
  %35 = load i32, ptr %9, align 4, !tbaa !5
  %36 = load i32, ptr %10, align 4, !tbaa !5
  %37 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_Z7computeiiRSt6vectorIS_IxSaIxEESaIS1_EE(i32 noundef %35, i32 noundef %36, ptr noundef nonnull align 8 dereferenceable(24) %37)
  br label %38

38:                                               ; preds = %34
  %39 = load i32, ptr %10, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %10, align 4, !tbaa !5
  br label %29, !llvm.loop !11

41:                                               ; preds = %33
  br label %42

42:                                               ; preds = %41
  %43 = load i32, ptr %9, align 4, !tbaa !5
  %44 = add nsw i32 %43, -1
  store i32 %44, ptr %9, align 4, !tbaa !5
  br label %24, !llvm.loop !13

45:                                               ; preds = %27
  br label %46

46:                                               ; preds = %45
  %47 = load i32, ptr %7, align 4, !tbaa !5
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %7, align 4, !tbaa !5
  br label %16, !llvm.loop !14

49:                                               ; preds = %20
  %50 = load ptr, ptr %6, align 8, !tbaa !9
  %51 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %50, i64 noundef 0) #4
  %52 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef 0) #4
  %53 = load i64, ptr %52, align 8, !tbaa !15
  %54 = icmp eq i64 %53, 9223372036854775807
  store i1 false, ptr %12, align 1
  store i1 false, ptr %13, align 1
  br i1 %54, label %55, label %57

55:                                               ; preds = %49
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #4
  store i1 true, ptr %12, align 1
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #4
  store i1 true, ptr %13, align 1
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str, ptr noundef nonnull align 1 dereferenceable(1) %11)
          to label %56 unwind label %70

56:                                               ; preds = %55
  br label %63

57:                                               ; preds = %49
  %58 = load ptr, ptr %6, align 8, !tbaa !9
  %59 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %58, i64 noundef 0) #4
  %60 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %59, i64 noundef 0) #4
  %61 = load i64, ptr %60, align 8, !tbaa !15
  invoke void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i64 noundef %61)
          to label %62 unwind label %70

62:                                               ; preds = %57
  br label %63

63:                                               ; preds = %62, %56
  %64 = load i1, ptr %13, align 1
  br i1 %64, label %65, label %66

65:                                               ; preds = %63
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #4
  br label %66

66:                                               ; preds = %65, %63
  %67 = load i1, ptr %12, align 1
  br i1 %67, label %68, label %69

68:                                               ; preds = %66
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #4
  br label %69

69:                                               ; preds = %68, %66
  ret void

70:                                               ; preds = %57, %55
  %71 = landingpad { ptr, i32 }
          cleanup
  %72 = extractvalue { ptr, i32 } %71, 0
  store ptr %72, ptr %14, align 8
  %73 = extractvalue { ptr, i32 } %71, 1
  store i32 %73, ptr %15, align 4
  %74 = load i1, ptr %13, align 1
  br i1 %74, label %75, label %76

75:                                               ; preds = %70
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %11) #4
  br label %76

76:                                               ; preds = %75, %70
  %77 = load i1, ptr %12, align 1
  br i1 %77, label %78, label %79

78:                                               ; preds = %76
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #4
  br label %79

79:                                               ; preds = %78, %76
  br label %80

80:                                               ; preds = %79
  %81 = load ptr, ptr %14, align 8
  %82 = load i32, ptr %15, align 4
  %83 = insertvalue { ptr, i32 } poison, ptr %81, 0
  %84 = insertvalue { ptr, i32 } %83, i32 %82, 1
  resume { ptr, i32 } %84
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

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 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !12}
!15 = !{!16, !16, i64 0}
!16 = !{!"long long", !7, i64 0}


; 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.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::allocator.5" = type { i8 }

@.str = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7computeiiRSt6vectorIS_IxSaIxEESaIS1_EE(i32 noundef, i32 noundef, ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7pyramidB5cxx11iRSt6vectorIS_IxSaIxEESaIS1_EE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i32 noundef %1, ptr noundef nonnull align 8 dereferenceable(24) %2) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::allocator.5", align 1
  %or.cond = icmp slt i32 %1, 2
  br i1 %or.cond, label %._crit_edge34, label %.preheader28.us

.preheader28.us:                                  ; preds = %3, %._crit_edge.us
  %.033.us = phi i32 [ %7, %._crit_edge.us ], [ 1, %3 ]
  br label %.lr.ph.us.preheader

.lr.ph.us:                                        ; preds = %.lr.ph.us.preheader, %.lr.ph.us
  %.02229.us = phi i32 [ %5, %.lr.ph.us ], [ 0, %.lr.ph.us.preheader ]
  tail call void @_Z7computeiiRSt6vectorIS_IxSaIxEESaIS1_EE(i32 noundef %.02331.us, i32 noundef %.02229.us, ptr noundef nonnull align 8 dereferenceable(24) %2)
  %5 = add nuw nsw i32 %.02229.us, 1
  %exitcond.not = icmp eq i32 %5, %indvars.iv
  br i1 %exitcond.not, label %.loopexit.us, label %.lr.ph.us, !llvm.loop !5

.lr.ph.us.preheader:                              ; preds = %.loopexit.us, %.preheader28.us
  %indvars.iv.in = phi i32 [ %1, %.preheader28.us ], [ %indvars.iv, %.loopexit.us ]
  %.02331.us.in = phi i32 [ %1, %.preheader28.us ], [ %.02331.us, %.loopexit.us ]
  %indvars.iv = add nsw i32 %indvars.iv.in, -1
  %.02331.us = add nsw i32 %.02331.us.in, -1
  br label %.lr.ph.us

.loopexit.us:                                     ; preds = %.lr.ph.us
  %6 = icmp sgt i32 %.02331.us.in, 2
  br i1 %6, label %.lr.ph.us.preheader, label %._crit_edge.us, !llvm.loop !7

._crit_edge.us:                                   ; preds = %.loopexit.us
  %7 = add nuw i32 %.033.us, 1
  %exitcond37.not = icmp eq i32 %.033.us, %1
  br i1 %exitcond37.not, label %._crit_edge34, label %.preheader28.us, !llvm.loop !8

._crit_edge34:                                    ; preds = %._crit_edge.us, %3
  %8 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef 0) #4
  %9 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %8, i64 noundef 0) #4
  %10 = load i64, ptr %9, align 8, !tbaa !9
  %11 = icmp eq i64 %10, 9223372036854775807
  br i1 %11, label %12, label %13

12:                                               ; preds = %._crit_edge34
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %17 unwind label %.critedge26

13:                                               ; preds = %._crit_edge34
  %14 = tail call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IxSaIxEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %2, i64 noundef 0) #4
  %15 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSt6vectorIxSaIxEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %14, i64 noundef 0) #4
  %16 = load i64, ptr %15, align 8, !tbaa !9
  tail call void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i64 noundef %16)
  br label %.critedge

17:                                               ; preds = %12
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  br label %.critedge

.critedge:                                        ; preds = %13, %17
  ret void

.critedge26:                                      ; preds = %12
  %18 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  resume { ptr, i32 } %18
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEx(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

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 = { 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = distinct !{!7, !6}
!8 = distinct !{!8, !6}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !11, i64 0}
!11 = !{!"omnipotent char", !12, i64 0}
!12 = !{!"Simple C++ TBAA"}


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