; LLVM IR from WayneLin92/SSeqCpp :: thirdparty/fmt/test/gtest-extra.ll (ZN15output_redirect16restore_and_readB5cxx11Ev)

; 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.0 }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon.0 = type { i64, [8 x i8] }
%class.output_redirect = type { ptr, %"class.fmt::v10::file", %"class.fmt::v10::file" }
%"class.fmt::v10::file" = type { i32 }

declare i32 @__gxx_personality_v0(...)

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

; 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 @_ZN15output_redirect7restoreEv(ptr noundef nonnull align 8 dereferenceable(16)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK3fmt3v104file10descriptorEv(ptr noundef nonnull align 4 dereferenceable(4)) #2 align 2

declare void @_ZN3fmt3v104file5closeEv(ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN15output_redirect16restore_and_readB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(16) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca i32, align 4
  %7 = alloca [4096 x i8], align 16
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %11 = load ptr, ptr %4, align 8
  call void @_ZN15output_redirect7restoreEv(ptr noundef nonnull align 8 dereferenceable(16) %11)
  store i1 false, ptr %5, align 1
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %12 = getelementptr inbounds %class.output_redirect, ptr %11, i32 0, i32 2
  %13 = call noundef i32 @_ZNK3fmt3v104file10descriptorEv(ptr noundef nonnull align 4 dereferenceable(4) %12) #4
  %14 = icmp eq i32 %13, -1
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  store i1 true, ptr %5, align 1
  store i32 1, ptr %6, align 4
  br label %36

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4096, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %26, %16
  %18 = getelementptr inbounds %class.output_redirect, ptr %11, i32 0, i32 2
  %19 = getelementptr inbounds [4096 x i8], ptr %7, i64 0, i64 0
  %20 = invoke noundef i64 @_ZN3fmt3v104file4readEPvm(ptr noundef nonnull align 4 dereferenceable(4) %18, ptr noundef %19, i64 noundef 4096)
          to label %21 unwind label %32

21:                                               ; preds = %17
  store i64 %20, ptr %8, align 8, !tbaa !9
  %22 = getelementptr inbounds [4096 x i8], ptr %7, i64 0, i64 0
  %23 = load i64, ptr %8, align 8, !tbaa !9
  %24 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendEPKcm(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %22, i64 noundef %23)
          to label %25 unwind label %32

25:                                               ; preds = %21
  br label %26

26:                                               ; preds = %25
  %27 = load i64, ptr %8, align 8, !tbaa !9
  %28 = icmp ne i64 %27, 0
  br i1 %28, label %17, label %29, !llvm.loop !11

29:                                               ; preds = %26
  %30 = getelementptr inbounds %class.output_redirect, ptr %11, i32 0, i32 2
  invoke void @_ZN3fmt3v104file5closeEv(ptr noundef nonnull align 4 dereferenceable(4) %30)
          to label %31 unwind label %32

31:                                               ; preds = %29
  store i1 true, ptr %5, align 1
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr %7) #4
  br label %36

32:                                               ; preds = %29, %21, %17
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %9, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr %7) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  br label %40

36:                                               ; preds = %31, %15
  %37 = load i1, ptr %5, align 1
  br i1 %37, label %39, label %38

38:                                               ; preds = %36
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  br label %39

39:                                               ; preds = %38, %36
  ret void

40:                                               ; preds = %32
  %41 = load ptr, ptr %9, align 8
  %42 = load i32, ptr %10, align 4
  %43 = insertvalue { ptr, i32 } poison, ptr %41, 0
  %44 = insertvalue { ptr, i32 } %43, i32 %42, 1
  resume { ptr, i32 } %44
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

declare noundef i64 @_ZN3fmt3v104file4readEPvm(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef, i64 noundef) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendEPKcm(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 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 = { 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 = { "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 = !{!"long", !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"

%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon.0 }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon.0 = type { i64, [8 x i8] }

declare i32 @__gxx_personality_v0(...)

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

; 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 @_ZN15output_redirect7restoreEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK3fmt3v104file10descriptorEv(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2 align 2

declare void @_ZN3fmt3v104file5closeEv(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN15output_redirect16restore_and_readB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(16) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca [4096 x i8], align 16
  tail call void @_ZN15output_redirect7restoreEv(ptr noundef nonnull align 8 dereferenceable(16) %1)
  tail call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  %4 = getelementptr inbounds i8, ptr %1, i64 12
  %5 = tail call noundef i32 @_ZNK3fmt3v104file10descriptorEv(ptr noundef nonnull align 4 dereferenceable(4) %4) #4
  %6 = icmp eq i32 %5, -1
  br i1 %6, label %16, label %7

7:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4096, ptr nonnull %3) #4
  br label %8

8:                                                ; preds = %12, %7
  %9 = invoke noundef i64 @_ZN3fmt3v104file4readEPvm(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull %3, i64 noundef 4096)
          to label %10 unwind label %.loopexit

10:                                               ; preds = %8
  %11 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendEPKcm(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull %3, i64 noundef %9)
          to label %12 unwind label %.loopexit

12:                                               ; preds = %10
  %.not = icmp eq i64 %9, 0
  br i1 %.not, label %13, label %8, !llvm.loop !5

13:                                               ; preds = %12
  invoke void @_ZN3fmt3v104file5closeEv(ptr noundef nonnull align 4 dereferenceable(4) %4)
          to label %14 unwind label %.loopexit.split-lp

14:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %3) #4
  br label %16

.loopexit:                                        ; preds = %8, %10
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %15

.loopexit.split-lp:                               ; preds = %13
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %15

15:                                               ; preds = %.loopexit.split-lp, %.loopexit
  %lpad.phi = phi { ptr, i32 } [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %3) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #4
  resume { ptr, i32 } %lpad.phi

16:                                               ; preds = %14, %2
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 align 2

declare noundef i64 @_ZN3fmt3v104file4readEPvm(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendEPKcm(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 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 = { 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 = { "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,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,LoopSimplifyPass,SROAPass,SimplifyCFGPass,TailCallElimPass