; LLVM IR from kajott/GIPS :: src/string_util.ll (ZN10StringUtil9Tokenizer4initEPKci)

; 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.StringUtil::Tokenizer" = type <{ ptr, i32, i32, [32 x i8], i32, [4 x i8] }>

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN10StringUtil9Tokenizer4initEPKci(ptr noundef nonnull align 8 dereferenceable(52) %0, ptr noundef %1, i32 noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  %9 = getelementptr inbounds %"class.StringUtil::Tokenizer", ptr %7, i32 0, i32 0
  store ptr %8, ptr %9, align 8, !tbaa !11
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %16

12:                                               ; preds = %3
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = call i64 @strlen(ptr noundef %13) #2
  %15 = trunc i64 %14 to i32
  br label %18

16:                                               ; preds = %3
  %17 = load i32, ptr %6, align 4, !tbaa !9
  br label %18

18:                                               ; preds = %16, %12
  %19 = phi i32 [ %15, %12 ], [ %17, %16 ]
  %20 = getelementptr inbounds %"class.StringUtil::Tokenizer", ptr %7, i32 0, i32 2
  store i32 %19, ptr %20, align 4, !tbaa !13
  %21 = getelementptr inbounds %"class.StringUtil::Tokenizer", ptr %7, i32 0, i32 4
  store i32 0, ptr %21, align 8, !tbaa !14
  %22 = getelementptr inbounds %"class.StringUtil::Tokenizer", ptr %7, i32 0, i32 1
  store i32 0, ptr %22, align 8, !tbaa !15
  %23 = getelementptr inbounds %"class.StringUtil::Tokenizer", ptr %7, i32 0, i32 3
  %24 = getelementptr inbounds [32 x i8], ptr %23, i64 0, i64 0
  store i8 0, ptr %24, align 8, !tbaa !16
  ret void
}

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #1

attributes #0 = { 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 #1 = { 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 #2 = { nounwind willreturn memory(read) }

!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 0}
!12 = !{!"_ZTSN10StringUtil9TokenizerE", !6, i64 0, !10, i64 8, !10, i64 12, !7, i64 16, !10, i64 48}
!13 = !{!12, !10, i64 12}
!14 = !{!12, !10, i64 48}
!15 = !{!12, !10, i64 8}
!16 = !{!7, !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"

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @_ZN10StringUtil9Tokenizer4initEPKci(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(52) %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  store ptr %1, ptr %0, align 8, !tbaa !5
  %4 = icmp slt i32 %2, 0
  br i1 %4, label %5, label %8

5:                                                ; preds = %3
  %6 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %1) #2
  %7 = trunc i64 %6 to i32
  br label %8

8:                                                ; preds = %3, %5
  %9 = phi i32 [ %7, %5 ], [ %2, %3 ]
  %10 = getelementptr inbounds i8, ptr %0, i64 12
  store i32 %9, ptr %10, align 4, !tbaa !11
  %11 = getelementptr inbounds i8, ptr %0, i64 48
  store i32 0, ptr %11, align 8, !tbaa !12
  %12 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 0, ptr %12, align 8, !tbaa !13
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  store i8 0, ptr %13, align 8, !tbaa !14
  ret void
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: readwrite) 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 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 #2 = { nounwind willreturn memory(read) }

!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, !7, i64 0}
!6 = !{!"_ZTSN10StringUtil9TokenizerE", !7, i64 0, !10, i64 8, !10, i64 12, !8, i64 16, !10, i64 48}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 12}
!12 = !{!6, !10, i64 48}
!13 = !{!6, !10, i64 8}
!14 = !{!8, !8, i64 0}


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