; LLVM IR from alekras/ao.rtos.cpp :: Library/Display/formatter.ll (ZN12FormatParser6formatEPcPKcz)

; 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.__va_list_tag = type { i32, i32, ptr, ptr }
%class.FormatParser = type { %class.Fsm, ptr, ptr, i32, i32, [1 x %struct.__va_list_tag] }
%class.Fsm = type { { i64, i64 } }

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN12FormatParser7initialEPKc(ptr noundef nonnull align 8 dereferenceable(64), ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3FsmIKcE4tranEMS1_FiPS0_E(ptr noundef nonnull align 8 dereferenceable(16), i64, i64) #1 align 2

; 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 uwtable
define dso_local void @_ZN12FormatParser6formatEPcPKcz(ptr noundef nonnull align 8 dereferenceable(64) %0, ptr noundef %1, ptr noundef %2, ...) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca [1 x %struct.__va_list_tag], align 16
  %8 = alloca { i64, i64 }, 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
  %9 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 24, ptr %7) #4
  %10 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %7, i64 0, i64 0
  call void @llvm.va_start.p0(ptr %10)
  %11 = getelementptr inbounds %class.FormatParser, ptr %9, i32 0, i32 5
  %12 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %11, i64 0, i64 0
  %13 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %7, i64 0, i64 0
  call void @llvm.va_copy.p0(ptr %12, ptr %13)
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds %class.FormatParser, ptr %9, i32 0, i32 1
  store ptr %14, ptr %15, align 8, !tbaa !9
  store { i64, i64 } { i64 ptrtoint (ptr @_ZN12FormatParser7initialEPKc to i64), i64 0 }, ptr %8, align 8, !tbaa !13
  %16 = getelementptr inbounds { i64, i64 }, ptr %8, i32 0, i32 0
  %17 = load i64, ptr %16, align 8
  %18 = getelementptr inbounds { i64, i64 }, ptr %8, i32 0, i32 1
  %19 = load i64, ptr %18, align 8
  call void @_ZN3FsmIKcE4tranEMS1_FiPS0_E(ptr noundef nonnull align 8 dereferenceable(16) %9, i64 %17, i64 %19)
  %20 = call noundef i32 @_ZN3FsmIKcE4initEv(ptr noundef nonnull align 8 dereferenceable(16) %9)
  br label %21

21:                                               ; preds = %30, %3
  %22 = call noundef i32 @_ZN12FormatParser8isFinishEv(ptr noundef nonnull align 8 dereferenceable(64) %9)
  %23 = icmp ne i32 %22, 0
  br i1 %23, label %28, label %24

24:                                               ; preds = %21
  %25 = call noundef i32 @_ZN12FormatParser7isErrorEv(ptr noundef nonnull align 8 dereferenceable(64) %9)
  %26 = icmp ne i32 %25, 0
  %27 = xor i1 %26, true
  br label %28

28:                                               ; preds = %24, %21
  %29 = phi i1 [ false, %21 ], [ %27, %24 ]
  br i1 %29, label %30, label %34

30:                                               ; preds = %28
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i32 1
  store ptr %32, ptr %6, align 8, !tbaa !5
  %33 = call noundef i32 @_ZN3FsmIKcE8dispatchEPS0_(ptr noundef nonnull align 8 dereferenceable(16) %9, ptr noundef %31)
  br label %21, !llvm.loop !14

34:                                               ; preds = %28
  %35 = getelementptr inbounds [1 x %struct.__va_list_tag], ptr %7, i64 0, i64 0
  call void @llvm.va_end.p0(ptr %35)
  call void @llvm.lifetime.end.p0(i64 24, ptr %7) #4
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_copy.p0(ptr, ptr) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3FsmIKcE4initEv(ptr noundef nonnull align 8 dereferenceable(16)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN12FormatParser8isFinishEv(ptr noundef nonnull align 8 dereferenceable(64)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN12FormatParser7isErrorEv(ptr noundef nonnull align 8 dereferenceable(64)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3FsmIKcE8dispatchEPS0_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #3

attributes #0 = { 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 #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nocallback nofree nosync nounwind willreturn }
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, !6, i64 16}
!10 = !{!"_ZTS12FormatParser", !11, i64 0, !6, i64 16, !6, i64 24, !12, i64 32, !12, i64 36, !7, i64 40}
!11 = !{!"_ZTS3FsmIKcE", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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.__va_list_tag = type { i32, i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN12FormatParser7initialEPKc(ptr noundef nonnull align 8 dereferenceable(64), ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3FsmIKcE4tranEMS1_FiPS0_E(ptr noundef nonnull align 8 dereferenceable(16), i64, i64) local_unnamed_addr #1 align 2

; 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 uwtable
define dso_local void @_ZN12FormatParser6formatEPcPKcz(ptr noundef nonnull align 8 dereferenceable(64) %0, ptr noundef %1, ptr noundef %2, ...) local_unnamed_addr #0 align 2 {
  %4 = alloca [1 x %struct.__va_list_tag], align 16
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #4
  call void @llvm.va_start.p0(ptr nonnull %4)
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  call void @llvm.va_copy.p0(ptr nonnull %5, ptr nonnull %4)
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  store ptr %1, ptr %6, align 8, !tbaa !5
  call void @_ZN3FsmIKcE4tranEMS1_FiPS0_E(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 ptrtoint (ptr @_ZN12FormatParser7initialEPKc to i64), i64 0)
  %7 = call noundef i32 @_ZN3FsmIKcE4initEv(ptr noundef nonnull align 8 dereferenceable(16) %0)
  %8 = call noundef i32 @_ZN12FormatParser8isFinishEv(ptr noundef nonnull align 8 dereferenceable(64) %0)
  %.not4 = icmp eq i32 %8, 0
  br i1 %.not4, label %.lr.ph, label %.critedge

.lr.ph:                                           ; preds = %3, %10
  %.05 = phi ptr [ %11, %10 ], [ %2, %3 ]
  %9 = call noundef i32 @_ZN12FormatParser7isErrorEv(ptr noundef nonnull align 8 dereferenceable(64) %0)
  %.not3 = icmp eq i32 %9, 0
  br i1 %.not3, label %10, label %.critedge

10:                                               ; preds = %.lr.ph
  %11 = getelementptr inbounds i8, ptr %.05, i64 1
  %12 = call noundef i32 @_ZN3FsmIKcE8dispatchEPS0_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %.05)
  %13 = call noundef i32 @_ZN12FormatParser8isFinishEv(ptr noundef nonnull align 8 dereferenceable(64) %0)
  %.not = icmp eq i32 %13, 0
  br i1 %.not, label %.lr.ph, label %.critedge, !llvm.loop !12

.critedge:                                        ; preds = %.lr.ph, %10, %3
  call void @llvm.va_end.p0(ptr nonnull %4)
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_start.p0(ptr) #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_copy.p0(ptr, ptr) #3

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3FsmIKcE4initEv(ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN12FormatParser8isFinishEv(ptr noundef nonnull align 8 dereferenceable(64)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN12FormatParser7isErrorEv(ptr noundef nonnull align 8 dereferenceable(64)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN3FsmIKcE8dispatchEPS0_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn
declare void @llvm.va_end.p0(ptr) #3

attributes #0 = { 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 #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { mustprogress nocallback nofree nosync nounwind willreturn }
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, !10, i64 16}
!6 = !{!"_ZTS12FormatParser", !7, i64 0, !10, i64 16, !10, i64 24, !11, i64 32, !11, i64 36, !8, i64 40}
!7 = !{!"_ZTS3FsmIKcE", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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