; LLVM IR from vmartinv/eldiego :: string/suffix.automaton.ll (Z7sa_initv)

; 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"

%struct.state = type { i32, i32, %"class.std::map" }
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@st = external dso_local global [20020 x %struct.state], align 16
@sz = external dso_local global i32, align 4
@last = external dso_local global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7sa_initv() #0 {
  %1 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %2

2:                                                ; preds = %12, %0
  %3 = load i32, ptr %1, align 4, !tbaa !5
  %4 = load i32, ptr @sz, align 4, !tbaa !5
  %5 = icmp slt i32 %3, %4
  br i1 %5, label %7, label %6

6:                                                ; preds = %2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %15

7:                                                ; preds = %2
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [20020 x %struct.state], ptr @st, i64 0, i64 %9
  %11 = getelementptr inbounds %struct.state, ptr %10, i32 0, i32 2
  call void @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48) %11) #2
  br label %12

12:                                               ; preds = %7
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %1, align 4, !tbaa !5
  br label %2, !llvm.loop !9

15:                                               ; preds = %6
  store i32 0, ptr @last, align 4, !tbaa !5
  store i32 0, ptr @sz, align 4, !tbaa !5
  store i32 0, ptr @st, align 16, !tbaa !11
  store i32 -1, ptr getelementptr inbounds (%struct.state, ptr @st, i32 0, i32 1), align 4, !tbaa !23
  %16 = load i32, ptr @sz, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr @sz, align 4, !tbaa !5
  ret void
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48)) #0 align 2

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

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTS5state", !6, i64 0, !6, i64 4, !13, i64 8}
!13 = !{!"_ZTSSt3mapIciSt4lessIcESaISt4pairIKciEEE", !14, i64 0}
!14 = !{!"_ZTSSt8_Rb_treeIcSt4pairIKciESt10_Select1stIS2_ESt4lessIcESaIS2_EE", !15, i64 0}
!15 = !{!"_ZTSNSt8_Rb_treeIcSt4pairIKciESt10_Select1stIS2_ESt4lessIcESaIS2_EE13_Rb_tree_implIS6_Lb1EEE", !16, i64 0, !18, i64 8}
!16 = !{!"_ZTSSt20_Rb_tree_key_compareISt4lessIcEE", !17, i64 0}
!17 = !{!"_ZTSSt4lessIcE"}
!18 = !{!"_ZTSSt15_Rb_tree_header", !19, i64 0, !22, i64 32}
!19 = !{!"_ZTSSt18_Rb_tree_node_base", !20, i64 0, !21, i64 8, !21, i64 16, !21, i64 24}
!20 = !{!"_ZTSSt14_Rb_tree_color", !7, i64 0}
!21 = !{!"any pointer", !7, i64 0}
!22 = !{!"long", !7, i64 0}
!23 = !{!12, !6, i64 4}


; 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"

%struct.state = type { i32, i32, %"class.std::map" }
%"class.std::map" = type { %"class.std::_Rb_tree" }
%"class.std::_Rb_tree" = type { %"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" }
%"struct.std::_Rb_tree<char, std::pair<const char, int>, std::_Select1st<std::pair<const char, int>>, std::less<char>>::_Rb_tree_impl" = type { [8 x i8], %"struct.std::_Rb_tree_header" }
%"struct.std::_Rb_tree_header" = type { %"struct.std::_Rb_tree_node_base", i64 }
%"struct.std::_Rb_tree_node_base" = type { i32, ptr, ptr, ptr }

@st = external dso_local global [20020 x %struct.state], align 16
@sz = external dso_local local_unnamed_addr global i32, align 4
@last = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z7sa_initv() local_unnamed_addr #0 {
  %1 = load i32, ptr @sz, align 4, !tbaa !5
  %2 = icmp sgt i32 %1, 0
  br i1 %2, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  store i32 0, ptr @last, align 4, !tbaa !5
  store i32 0, ptr @st, align 16, !tbaa !9
  store i32 -1, ptr getelementptr inbounds (i8, ptr @st, i64 4), align 4, !tbaa !21
  store i32 1, ptr @sz, align 4, !tbaa !5
  ret void

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %3 = getelementptr inbounds [20020 x %struct.state], ptr @st, i64 0, i64 %indvars.iv, i32 2
  tail call void @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48) %3) #1
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %4 = load i32, ptr @sz, align 4, !tbaa !5
  %5 = sext i32 %4 to i64
  %6 = icmp slt i64 %indvars.iv.next, %5
  br i1 %6, label %.lr.ph, label %._crit_edge, !llvm.loop !22
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt3mapIciSt4lessIcESaISt4pairIKciEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(48)) local_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 = { 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, !6, i64 0}
!10 = !{!"_ZTS5state", !6, i64 0, !6, i64 4, !11, i64 8}
!11 = !{!"_ZTSSt3mapIciSt4lessIcESaISt4pairIKciEEE", !12, i64 0}
!12 = !{!"_ZTSSt8_Rb_treeIcSt4pairIKciESt10_Select1stIS2_ESt4lessIcESaIS2_EE", !13, i64 0}
!13 = !{!"_ZTSNSt8_Rb_treeIcSt4pairIKciESt10_Select1stIS2_ESt4lessIcESaIS2_EE13_Rb_tree_implIS6_Lb1EEE", !14, i64 0, !16, i64 8}
!14 = !{!"_ZTSSt20_Rb_tree_key_compareISt4lessIcEE", !15, i64 0}
!15 = !{!"_ZTSSt4lessIcE"}
!16 = !{!"_ZTSSt15_Rb_tree_header", !17, i64 0, !20, i64 32}
!17 = !{!"_ZTSSt18_Rb_tree_node_base", !18, i64 0, !19, i64 8, !19, i64 16, !19, i64 24}
!18 = !{!"_ZTSSt14_Rb_tree_color", !7, i64 0}
!19 = !{!"any pointer", !7, i64 0}
!20 = !{!"long", !7, i64 0}
!21 = !{!10, !6, i64 4}
!22 = distinct !{!22, !23}
!23 = !{!"llvm.loop.mustprogress"}


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