; LLVM IR from dynexcoin/Dynex :: src/Common/StringView.ll (ZNK6Common10StringViewixEm)

; 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.Common::StringView" = type { ptr, i64 }

@.str = external hidden unnamed_addr constant [29 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [75 x i8], align 1
@__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm = external hidden unnamed_addr constant [69 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK6Common10StringViewixEm(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  %5 = load ptr, ptr %3, align 8
  %6 = getelementptr inbounds %"class.Common::StringView", ptr %5, i32 0, i32 0
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = icmp ne ptr %7, null
  br i1 %8, label %13, label %9

9:                                                ; preds = %2
  %10 = getelementptr inbounds %"class.Common::StringView", ptr %5, i32 0, i32 1
  %11 = load i64, ptr %10, align 8, !tbaa !13
  %12 = icmp eq i64 %11, 0
  br label %13

13:                                               ; preds = %9, %2
  %14 = phi i1 [ true, %2 ], [ %12, %9 ]
  br i1 %14, label %15, label %16

15:                                               ; preds = %13
  br label %18

16:                                               ; preds = %13
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.2, i32 noundef 100, ptr noundef @__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm) #2
  unreachable

17:                                               ; No predecessors!
  br label %18

18:                                               ; preds = %17, %15
  %19 = load i64, ptr %4, align 8, !tbaa !9
  %20 = getelementptr inbounds %"class.Common::StringView", ptr %5, i32 0, i32 1
  %21 = load i64, ptr %20, align 8, !tbaa !13
  %22 = icmp ult i64 %19, %21
  br i1 %22, label %23, label %24

23:                                               ; preds = %18
  br label %26

24:                                               ; preds = %18
  call void @__assert_fail(ptr noundef @.str.4, ptr noundef @.str.2, i32 noundef 101, ptr noundef @__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm) #2
  unreachable

25:                                               ; No predecessors!
  br label %26

26:                                               ; preds = %25, %23
  %27 = getelementptr inbounds %"class.Common::StringView", ptr %5, i32 0, i32 0
  %28 = load ptr, ptr %27, align 8, !tbaa !11
  %29 = load i64, ptr %4, align 8, !tbaa !9
  %30 = getelementptr inbounds i8, ptr %28, i64 %29
  ret ptr %30
}

attributes #0 = { noreturn 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 #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 = { noreturn 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 = !{!12, !6, i64 0}
!12 = !{!"_ZTSN6Common10StringViewE", !6, i64 0, !10, i64 8}
!13 = !{!12, !10, 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"

@.str = external hidden unnamed_addr constant [29 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [75 x i8], align 1
@__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm = external hidden unnamed_addr constant [69 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [13 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNK6Common10StringViewixEm(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0, i64 noundef %1) local_unnamed_addr #1 align 2 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %.not = icmp ne ptr %3, null
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i64, ptr %4, align 8
  %6 = icmp eq i64 %5, 0
  %or.cond = select i1 %.not, i1 true, i1 %6
  br i1 %or.cond, label %.critedge, label %7

7:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.2, i32 noundef 100, ptr noundef nonnull @__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm) #2
  unreachable

.critedge:                                        ; preds = %2
  %8 = icmp ugt i64 %5, %1
  br i1 %8, label %10, label %9

9:                                                ; preds = %.critedge
  tail call void @__assert_fail(ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.2, i32 noundef 101, ptr noundef nonnull @__PRETTY_FUNCTION__._ZNK6Common10StringViewixEm) #2
  unreachable

10:                                               ; preds = %.critedge
  %11 = getelementptr inbounds i8, ptr %3, i64 %1
  ret ptr %11
}

attributes #0 = { noreturn 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 #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 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTSN6Common10StringViewE", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"long", !8, i64 0}


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