; LLVM IR from ThePhysicsGuys/Physics3D :: graphics/legacy/shaderLexer.ll (ZN3P3D8Graphics10TokenStack6addAllERKS1_)

; 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.P3D::Graphics::Token" = type { %"struct.P3D::Graphics::TokenType", %"class.std::__cxx11::basic_string" }
%"struct.P3D::Graphics::TokenType" = type <{ i8, [7 x i8], %"class.std::__cxx11::basic_regex", i8, i8, [6 x i8] }>
%"class.std::__cxx11::basic_regex" = type { i32, %"class.std::locale", %"class.std::shared_ptr" }
%"class.std::locale" = type { ptr }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }
%"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] }

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

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3P3D8Graphics10TokenStack3addERKNS0_5TokenE(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(80)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3P3D8Graphics10TokenStack6addAllERKS1_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(40) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca %"struct.P3D::Graphics::Token", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %20, %2
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = call noundef zeroext i1 @_ZNK3P3D8Graphics10TokenStack9availableEm(ptr noundef nonnull align 8 dereferenceable(40) %11, i64 noundef %13)
  br i1 %14, label %15, label %25

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 80, ptr %6) #4
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %5, align 4, !tbaa !9
  %19 = sext i32 %17 to i64
  call void @_ZNK3P3D8Graphics10TokenStack4peekEm(ptr dead_on_unwind writable sret(%"struct.P3D::Graphics::Token") align 8 %6, ptr noundef nonnull align 8 dereferenceable(40) %16, i64 noundef %19)
  invoke void @_ZN3P3D8Graphics10TokenStack3addERKNS0_5TokenE(ptr noundef nonnull align 8 dereferenceable(40) %9, ptr noundef nonnull align 8 dereferenceable(80) %6)
          to label %20 unwind label %21

20:                                               ; preds = %15
  call void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80) %6) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %6) #4
  br label %10, !llvm.loop !11

21:                                               ; preds = %15
  %22 = landingpad { ptr, i32 }
          cleanup
  %23 = extractvalue { ptr, i32 } %22, 0
  store ptr %23, ptr %7, align 8
  %24 = extractvalue { ptr, i32 } %22, 1
  store i32 %24, ptr %8, align 4
  call void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80) %6) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %26

25:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  ret void

26:                                               ; preds = %21
  %27 = load ptr, ptr %7, align 8
  %28 = load i32, ptr %8, align 4
  %29 = insertvalue { ptr, i32 } poison, ptr %27, 0
  %30 = insertvalue { ptr, i32 } %29, i32 %28, 1
  resume { ptr, i32 } %30
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK3P3D8Graphics10TokenStack4peekEm(ptr dead_on_unwind noalias writable sret(%"struct.P3D::Graphics::Token") align 8, ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK3P3D8Graphics10TokenStack9availableEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 #3 = { 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 #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 = !{!"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"

%"struct.P3D::Graphics::Token" = type { %"struct.P3D::Graphics::TokenType", %"class.std::__cxx11::basic_string" }
%"struct.P3D::Graphics::TokenType" = type <{ i8, [7 x i8], %"class.std::__cxx11::basic_regex", i8, i8, [6 x i8] }>
%"class.std::__cxx11::basic_regex" = type { i32, %"class.std::locale", %"class.std::shared_ptr" }
%"class.std::locale" = type { ptr }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }
%"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] }

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

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3P3D8Graphics10TokenStack3addERKNS0_5TokenE(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3P3D8Graphics10TokenStack6addAllERKS1_(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(40) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"struct.P3D::Graphics::Token", align 8
  %4 = tail call noundef zeroext i1 @_ZNK3P3D8Graphics10TokenStack9availableEm(ptr noundef nonnull align 8 dereferenceable(40) %1, i64 noundef 0)
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %5
  %indvars.iv = phi i64 [ %indvars.iv.next, %5 ], [ 0, %2 ]
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %3) #4
  call void @_ZNK3P3D8Graphics10TokenStack4peekEm(ptr dead_on_unwind nonnull writable sret(%"struct.P3D::Graphics::Token") align 8 %3, ptr noundef nonnull align 8 dereferenceable(40) %1, i64 noundef %indvars.iv)
  invoke void @_ZN3P3D8Graphics10TokenStack3addERKNS0_5TokenE(ptr noundef nonnull align 8 dereferenceable(40) %0, ptr noundef nonnull align 8 dereferenceable(80) %3)
          to label %5 unwind label %7

5:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  call void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  %6 = call noundef zeroext i1 @_ZNK3P3D8Graphics10TokenStack9availableEm(ptr noundef nonnull align 8 dereferenceable(40) %1, i64 noundef %indvars.iv.next)
  br i1 %6, label %.lr.ph, label %._crit_edge, !llvm.loop !5

7:                                                ; preds = %.lr.ph
  %8 = landingpad { ptr, i32 }
          cleanup
  call void @_ZN3P3D8Graphics5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  resume { ptr, i32 } %8

._crit_edge:                                      ; preds = %5, %2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNK3P3D8Graphics10TokenStack4peekEm(ptr dead_on_unwind noalias writable sret(%"struct.P3D::Graphics::Token") align 8, ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNK3P3D8Graphics10TokenStack9availableEm(ptr noundef nonnull align 8 dereferenceable(40), i64 noundef) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 #3 = { 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 #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"}


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