; LLVM IR from mkazhdan/DMG :: Util/CmdLineParser.ll (ZN13cmdLineString4readEPPci)

; 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.cmdLineString = type { %class.cmdLineReadable, ptr }
%class.cmdLineReadable = type { ptr, i8, ptr }

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #0

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) #1

; Function Attrs: nounwind
declare ptr @strcpy(ptr noundef, ptr noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN13cmdLineString4readEPPci(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %1, i32 noundef %2) unnamed_addr #3 align 2 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %8 = load ptr, ptr %5, align 8
  %9 = load i32, ptr %7, align 4, !tbaa !9
  %10 = icmp sgt i32 %9, 0
  br i1 %10, label %11, label %26

11:                                               ; preds = %3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds ptr, ptr %12, i64 0
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = call i64 @strlen(ptr noundef %14) #4
  %16 = add i64 %15, 1
  %17 = call noalias noundef nonnull ptr @_Znam(i64 noundef %16) #5
  %18 = getelementptr inbounds %class.cmdLineString, ptr %8, i32 0, i32 1
  store ptr %17, ptr %18, align 8, !tbaa !11
  %19 = getelementptr inbounds %class.cmdLineString, ptr %8, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = getelementptr inbounds ptr, ptr %21, i64 0
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = call ptr @strcpy(ptr noundef %20, ptr noundef %23) #6
  %25 = getelementptr inbounds %class.cmdLineReadable, ptr %8, i32 0, i32 1
  store i8 1, ptr %25, align 8, !tbaa !15
  store i32 1, ptr %4, align 4
  br label %27

26:                                               ; preds = %3
  store i32 0, ptr %4, align 4
  br label %27

27:                                               ; preds = %26, %11
  %28 = load i32, ptr %4, align 4
  ret i32 %28
}

attributes #0 = { nounwind willreturn memory(read) "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 = { nobuiltin allocsize(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 = { nounwind "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 = { nounwind willreturn memory(read) }
attributes #5 = { builtin allocsize(0) }
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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 24}
!12 = !{!"_ZTS13cmdLineString", !13, i64 0, !6, i64 24}
!13 = !{!"_ZTS15cmdLineReadable", !14, i64 8, !6, i64 16}
!14 = !{!"bool", !7, i64 0}
!15 = !{!13, !14, i64 8}


; 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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znam(i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: readwrite)
declare ptr @strcpy(ptr noalias noundef returned writeonly, ptr noalias nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
define dso_local noundef range(i32 0, 2) i32 @_ZN13cmdLineString4readEPPci(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(32) %0, ptr nocapture noundef readonly %1, i32 noundef %2) unnamed_addr #3 align 2 {
  %4 = icmp sgt i32 %2, 0
  br i1 %4, label %5, label %14

5:                                                ; preds = %3
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %6) #4
  %8 = add i64 %7, 1
  %9 = tail call noalias noundef nonnull ptr @_Znam(i64 noundef %8) #5
  %10 = getelementptr inbounds i8, ptr %0, i64 24
  store ptr %9, ptr %10, align 8, !tbaa !9
  %11 = load ptr, ptr %1, align 8, !tbaa !5
  %12 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %9, ptr noundef nonnull dereferenceable(1) %11) #6
  %13 = getelementptr inbounds i8, ptr %0, i64 8
  store i8 1, ptr %13, align 8, !tbaa !13
  br label %14

14:                                               ; preds = %3, %5
  %.0 = phi i32 [ 1, %5 ], [ 0, %3 ]
  ret i32 %.0
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { nobuiltin allocsize(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 nofree nounwind willreturn memory(argmem: readwrite) "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 = { nounwind willreturn memory(read) }
attributes #5 = { builtin allocsize(0) }
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, !6, i64 24}
!10 = !{!"_ZTS13cmdLineString", !11, i64 0, !6, i64 24}
!11 = !{!"_ZTS15cmdLineReadable", !12, i64 8, !6, i64 16}
!12 = !{!"bool", !7, i64 0}
!13 = !{!11, !12, i64 8}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass