; LLVM IR from ramsdell/lineqpp :: lua (lauxlib)

; 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.luaL_Buffer = type { ptr, i32, ptr, [8192 x i8] }

; Function Attrs: nounwind uwtable
define dso_local void @luaL_addlstring(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %24, %3
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = add i64 %8, -1
  store i64 %9, ptr %6, align 8, !tbaa !9
  %10 = icmp ne i64 %8, 0
  br i1 %10, label %11, label %34

11:                                               ; preds = %7
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.luaL_Buffer, ptr %12, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.luaL_Buffer, ptr %15, i32 0, i32 3
  %17 = getelementptr inbounds [8192 x i8], ptr %16, i64 0, i64 0
  %18 = getelementptr inbounds i8, ptr %17, i64 8192
  %19 = icmp ult ptr %14, %18
  br i1 %19, label %24, label %20

20:                                               ; preds = %11
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = call ptr @luaL_prepbuffer(ptr noundef %21)
  %23 = icmp ne ptr %22, null
  br label %24

24:                                               ; preds = %20, %11
  %25 = phi i1 [ true, %11 ], [ %23, %20 ]
  %26 = zext i1 %25 to i32
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %27, i32 1
  store ptr %28, ptr %5, align 8, !tbaa !5
  %29 = load i8, ptr %27, align 1, !tbaa !14
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.luaL_Buffer, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr %31, align 8, !tbaa !11
  %33 = getelementptr inbounds i8, ptr %32, i32 1
  store ptr %33, ptr %31, align 8, !tbaa !11
  store i8 %29, ptr %32, align 1, !tbaa !14
  br label %7, !llvm.loop !15

34:                                               ; preds = %7
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @luaL_prepbuffer(ptr noundef) #0

attributes #0 = { 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" }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"luaL_Buffer", !6, i64 0, !13, i64 8, !6, i64 16, !7, i64 24}
!13 = !{!"int", !7, i64 0}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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"

; Function Attrs: nounwind uwtable
define dso_local void @luaL_addlstring(ptr noundef %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not6 = icmp eq i64 %2, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = getelementptr inbounds i8, ptr %0, i64 8216
  br label %5

5:                                                ; preds = %.lr.ph, %11
  %.in = phi i64 [ %2, %.lr.ph ], [ %6, %11 ]
  %.057 = phi ptr [ %1, %.lr.ph ], [ %13, %11 ]
  %6 = add i64 %.in, -1
  %7 = load ptr, ptr %0, align 8, !tbaa !5
  %8 = icmp ult ptr %7, %4
  br i1 %8, label %11, label %9

9:                                                ; preds = %5
  %10 = tail call ptr @luaL_prepbuffer(ptr noundef nonnull %0)
  %.pre = load ptr, ptr %0, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %9, %5
  %12 = phi ptr [ %.pre, %9 ], [ %7, %5 ]
  %13 = getelementptr inbounds i8, ptr %.057, i64 1
  %14 = load i8, ptr %.057, align 1, !tbaa !11
  %15 = getelementptr inbounds i8, ptr %12, i64 1
  store ptr %15, ptr %0, align 8, !tbaa !5
  store i8 %14, ptr %12, align 1, !tbaa !11
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %._crit_edge, label %5, !llvm.loop !12

._crit_edge:                                      ; preds = %11, %3
  ret void
}

; Function Attrs: nounwind uwtable
declare dso_local ptr @luaL_prepbuffer(ptr noundef) local_unnamed_addr #0

attributes #0 = { 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" }

!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 = !{!"luaL_Buffer", !7, i64 0, !10, i64 8, !7, i64 16, !8, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!8, !8, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass