; LLVM IR from sympiler/nasoq :: nasoq_driver/ZN6format11read_stringERSt14basic_ifstreamIcSt11char_traitsIcEERNSt7_0b5384f9/ZN6format11read_stringERSt14basic_ifstreamIcSt11char_traitsIcEERNSt7 (bde2c4c8)

; 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::fpos" = type { i64, %struct.__mbstate_t }
%struct.__mbstate_t = type { i32, %union.anon.55 }
%union.anon.55 = type { i32 }

@.str.102 = external hidden unnamed_addr constant [2 x i8], align 1

; 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZSt7getlineIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6format11read_stringERSt14basic_ifstreamIcSt11char_traitsIcEERNSt7__cxx1112basic_stringIcS2_SaIcEEES8_(ptr noundef nonnull align 8 dereferenceable(256) %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef %2) #3 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::fpos", align 8
  %11 = alloca i32, align 4
  %12 = alloca %"class.std::fpos", align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  br label %13

13:                                               ; preds = %70, %68, %3
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %14, align 8, !tbaa !9
  %16 = getelementptr i8, ptr %15, i64 -24
  %17 = load i64, ptr %16, align 8
  %18 = getelementptr inbounds i8, ptr %14, i64 %17
  %19 = invoke noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEE3eofEv(ptr noundef nonnull align 8 dereferenceable(264) %18)
          to label %20 unwind label %44

20:                                               ; preds = %13
  %21 = xor i1 %19, true
  br i1 %21, label %22, label %71

22:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 16, ptr %10) #6
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = invoke { i64, i64 } @_ZNSi5tellgEv(ptr noundef nonnull align 8 dereferenceable(16) %23)
          to label %25 unwind label %48

25:                                               ; preds = %22
  %26 = getelementptr inbounds { i64, i64 }, ptr %10, i32 0, i32 0
  %27 = extractvalue { i64, i64 } %24, 0
  store i64 %27, ptr %26, align 8
  %28 = getelementptr inbounds { i64, i64 }, ptr %10, i32 0, i32 1
  %29 = extractvalue { i64, i64 } %24, 1
  store i64 %29, ptr %28, align 8
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZSt7getlineIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) %30, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %32 unwind label %48

32:                                               ; preds = %25
  %33 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #6
  %34 = invoke noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEmmRKS4_(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef 0, i64 noundef %33, ptr noundef nonnull align 8 dereferenceable(32) %2)
          to label %35 unwind label %48

35:                                               ; preds = %32
  %36 = icmp ne i32 %34, 0
  br i1 %36, label %37, label %60

37:                                               ; preds = %35
  %38 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef 0)
          to label %39 unwind label %48

39:                                               ; preds = %37
  %40 = load i8, ptr %38, align 1, !tbaa !11
  %41 = sext i8 %40 to i32
  %42 = icmp eq i32 %41, 45
  br i1 %42, label %43, label %52

43:                                               ; preds = %39
  store i32 2, ptr %11, align 4
  br label %68, !llvm.loop !12

44:                                               ; preds = %13
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %8, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %9, align 4
  br label %72

48:                                               ; preds = %63, %61, %60, %52, %37, %32, %25, %22
  %49 = landingpad { ptr, i32 }
          cleanup
  %50 = extractvalue { ptr, i32 } %49, 0
  store ptr %50, ptr %8, align 8
  %51 = extractvalue { ptr, i32 } %49, 1
  store i32 %51, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #6
  br label %72

52:                                               ; preds = %39
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %12, ptr align 8 %10, i64 16, i1 false), !tbaa.struct !14
  %54 = getelementptr inbounds { i64, i64 }, ptr %12, i32 0, i32 0
  %55 = load i64, ptr %54, align 8
  %56 = getelementptr inbounds { i64, i64 }, ptr %12, i32 0, i32 1
  %57 = load i64, ptr %56, align 8
  %58 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi5seekgESt4fposI11__mbstate_tE(ptr noundef nonnull align 8 dereferenceable(16) %53, i64 %55, i64 %57)
          to label %59 unwind label %48

59:                                               ; preds = %52
  store i32 3, ptr %11, align 4
  br label %68

60:                                               ; preds = %35
  invoke void @_ZN6formatL5ltrimERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %61 unwind label %48

61:                                               ; preds = %60
  %62 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEPKc(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef @.str.102)
          to label %63 unwind label %48

63:                                               ; preds = %61
  %64 = load ptr, ptr %5, align 8, !tbaa !5
  %65 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %64, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %66 unwind label %48

66:                                               ; preds = %63
  br label %67

67:                                               ; preds = %66
  store i32 0, ptr %11, align 4
  br label %68

68:                                               ; preds = %67, %59, %43
  call void @llvm.lifetime.end.p0(i64 16, ptr %10) #6
  %69 = load i32, ptr %11, align 4
  switch i32 %69, label %78 [
    i32 0, label %70
    i32 2, label %13
    i32 3, label %71
  ]

70:                                               ; preds = %68
  br label %13, !llvm.loop !12

71:                                               ; preds = %68, %20
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  ret void

72:                                               ; preds = %48, %44
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #6
  br label %73

73:                                               ; preds = %72
  %74 = load ptr, ptr %8, align 8
  %75 = load i32, ptr %9, align 4
  %76 = insertvalue { ptr, i32 } poison, ptr %74, 0
  %77 = insertvalue { ptr, i32 } %76, i32 %75, 1
  resume { ptr, i32 } %77

78:                                               ; preds = %68
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEE3eofEv(ptr noundef nonnull align 8 dereferenceable(264)) #1 align 2

declare { i64, i64 } @_ZNSi5tellgEv(ptr noundef nonnull align 8 dereferenceable(16)) #4

declare noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEmmRKS4_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef, ptr noundef nonnull align 8 dereferenceable(32)) #4

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi5seekgESt4fposI11__mbstate_tE(ptr noundef nonnull align 8 dereferenceable(16), i64, i64) #4

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #5

; Function Attrs: inlinehint mustprogress uwtable
declare hidden void @_ZN6formatL5ltrimERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32)) #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEPKc(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 = { "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 #5 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #6 = { 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 = !{!"vtable pointer", !8, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = !{i64 0, i64 8, !15, i64 8, i64 4, !17, i64 12, i64 4, !11}
!15 = !{!16, !16, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = !{!18, !18, i64 0}
!18 = !{!"int", !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] }

@.str.102 = external hidden unnamed_addr constant [2 x i8], align 1

; 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(16) ptr @_ZSt7getlineIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6format11read_stringERSt14basic_ifstreamIcSt11char_traitsIcEERNSt7__cxx1112basic_stringIcS2_SaIcEEES8_(ptr noundef nonnull align 8 dereferenceable(256) %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef %2) local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  %6 = getelementptr i8, ptr %5, i64 -24
  %7 = load i64, ptr %6, align 8
  %8 = getelementptr inbounds i8, ptr %0, i64 %7
  %9 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEE3eofEv(ptr noundef nonnull align 8 dereferenceable(264) %8)
  br i1 %9, label %.thread, label %.lr.ph

.lr.ph:                                           ; preds = %3, %31
  %10 = invoke { i64, i64 } @_ZNSi5tellgEv(ptr noundef nonnull align 8 dereferenceable(16) %0)
          to label %11 unwind label %.loopexit

11:                                               ; preds = %.lr.ph
  %12 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZSt7getlineIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %13 unwind label %.loopexit

13:                                               ; preds = %11
  %14 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #5
  %15 = invoke noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEmmRKS4_(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef 0, i64 noundef %14, ptr noundef nonnull align 8 dereferenceable(32) %2)
          to label %16 unwind label %.loopexit

16:                                               ; preds = %13
  %.not = icmp eq i32 %15, 0
  br i1 %.not, label %26, label %17

17:                                               ; preds = %16
  %18 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef 0)
  %19 = load i8, ptr %18, align 1, !tbaa !8
  %20 = icmp eq i8 %19, 45
  br i1 %20, label %31, label %22, !llvm.loop !10

.loopexit:                                        ; preds = %.lr.ph, %11, %13, %26, %27, %29
  %lpad.loopexit = landingpad { ptr, i32 }
          cleanup
  br label %21

.loopexit.split-lp:                               ; preds = %22
  %lpad.loopexit.split-lp = landingpad { ptr, i32 }
          cleanup
  br label %21

21:                                               ; preds = %.loopexit.split-lp, %.loopexit
  %lpad.phi = phi { ptr, i32 } [ %lpad.loopexit, %.loopexit ], [ %lpad.loopexit.split-lp, %.loopexit.split-lp ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #5
  resume { ptr, i32 } %lpad.phi

22:                                               ; preds = %17
  %23 = extractvalue { i64, i64 } %10, 0
  %24 = extractvalue { i64, i64 } %10, 1
  %25 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi5seekgESt4fposI11__mbstate_tE(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 %23, i64 %24)
          to label %.thread unwind label %.loopexit.split-lp

26:                                               ; preds = %16
  invoke void @_ZN6formatL5ltrimERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %27 unwind label %.loopexit

27:                                               ; preds = %26
  %28 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEPKc(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef nonnull @.str.102)
          to label %29 unwind label %.loopexit

29:                                               ; preds = %27
  %30 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %4)
          to label %31 unwind label %.loopexit

31:                                               ; preds = %29, %17
  %32 = load ptr, ptr %0, align 8, !tbaa !5
  %33 = getelementptr i8, ptr %32, i64 -24
  %34 = load i64, ptr %33, align 8
  %35 = getelementptr inbounds i8, ptr %0, i64 %34
  %36 = call noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEE3eofEv(ptr noundef nonnull align 8 dereferenceable(264) %35)
  br i1 %36, label %.thread, label %.lr.ph

.thread:                                          ; preds = %31, %3, %22
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #5
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare noundef zeroext i1 @_ZNKSt9basic_iosIcSt11char_traitsIcEE3eofEv(ptr noundef nonnull align 8 dereferenceable(264)) local_unnamed_addr #1 align 2

declare { i64, i64 } @_ZNSi5tellgEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #4

declare noundef i32 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE7compareEmmRKS4_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef, ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSi5seekgESt4fposI11__mbstate_tE(ptr noundef nonnull align 8 dereferenceable(16), i64, i64) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress uwtable
declare hidden void @_ZN6formatL5ltrimERNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLEPKc(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) local_unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6appendERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 = { "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 #5 = { 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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"omnipotent char", !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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