; LLVM IR from tezc/sc :: buffer (sc_buf)

; 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.sc_buf = type { ptr, i64, i64, i64, i64, i32, i8 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @sc_buf_valid(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i64 @sc_buf_get_64(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @sc_buf_get_str(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = call i64 @sc_buf_get_64(ptr noundef %7)
  store i64 %8, ptr %4, align 8, !tbaa !9
  %9 = load i64, ptr %4, align 8, !tbaa !9
  %10 = icmp eq i64 %9, -4097
  br i1 %10, label %11, label %12

11:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %47

12:                                               ; preds = %1
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = call zeroext i1 @sc_buf_valid(ptr noundef %13)
  br i1 %14, label %16, label %15

15:                                               ; preds = %12
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %47

16:                                               ; preds = %12
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.sc_buf, ptr %17, i32 0, i32 3
  %19 = load i64, ptr %18, align 8, !tbaa !11
  %20 = load i64, ptr %4, align 8, !tbaa !9
  %21 = add i64 %19, %20
  %22 = add i64 %21, 1
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.sc_buf, ptr %23, i32 0, i32 4
  %25 = load i64, ptr %24, align 8, !tbaa !15
  %26 = icmp ugt i64 %22, %25
  br i1 %26, label %27, label %32

27:                                               ; preds = %16
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.sc_buf, ptr %28, i32 0, i32 5
  %30 = load i32, ptr %29, align 8, !tbaa !16
  %31 = or i32 %30, 1
  store i32 %31, ptr %29, align 8, !tbaa !16
  store ptr null, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %47

32:                                               ; preds = %16
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.sc_buf, ptr %33, i32 0, i32 0
  %35 = load ptr, ptr %34, align 8, !tbaa !17
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.sc_buf, ptr %36, i32 0, i32 3
  %38 = load i64, ptr %37, align 8, !tbaa !11
  %39 = getelementptr inbounds i8, ptr %35, i64 %38
  store ptr %39, ptr %5, align 8, !tbaa !5
  %40 = load i64, ptr %4, align 8, !tbaa !9
  %41 = add i64 %40, 1
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.sc_buf, ptr %42, i32 0, i32 3
  %44 = load i64, ptr %43, align 8, !tbaa !11
  %45 = add i64 %44, %41
  store i64 %45, ptr %43, align 8, !tbaa !11
  %46 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %46, ptr %2, align 8
  store i32 1, ptr %6, align 4
  br label %47

47:                                               ; preds = %32, %27, %15, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %48 = load ptr, ptr %2, align 8
  ret ptr %48
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 24}
!12 = !{!"sc_buf", !6, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !13, i64 40, !14, i64 44}
!13 = !{!"int", !7, i64 0}
!14 = !{!"_Bool", !7, i64 0}
!15 = !{!12, !10, i64 32}
!16 = !{!12, !13, i64 40}
!17 = !{!12, !6, 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: nounwind uwtable
declare dso_local zeroext i1 @sc_buf_valid(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local i64 @sc_buf_get_64(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @sc_buf_get_str(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call i64 @sc_buf_get_64(ptr noundef %0)
  %3 = icmp eq i64 %2, -4097
  br i1 %3, label %21, label %4

4:                                                ; preds = %1
  %5 = tail call zeroext i1 @sc_buf_valid(ptr noundef %0)
  br i1 %5, label %6, label %21

6:                                                ; preds = %4
  %7 = getelementptr inbounds i8, ptr %0, i64 24
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %9 = add i64 %2, 1
  %10 = add i64 %9, %8
  %11 = getelementptr inbounds i8, ptr %0, i64 32
  %12 = load i64, ptr %11, align 8, !tbaa !13
  %13 = icmp ugt i64 %10, %12
  br i1 %13, label %14, label %18

14:                                               ; preds = %6
  %15 = getelementptr inbounds i8, ptr %0, i64 40
  %16 = load i32, ptr %15, align 8, !tbaa !14
  %17 = or i32 %16, 1
  store i32 %17, ptr %15, align 8, !tbaa !14
  br label %21

18:                                               ; preds = %6
  %19 = load ptr, ptr %0, align 8, !tbaa !15
  %20 = getelementptr inbounds i8, ptr %19, i64 %8
  store i64 %10, ptr %7, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %4, %1, %18, %14
  %.0 = phi ptr [ null, %14 ], [ %20, %18 ], [ null, %1 ], [ null, %4 ]
  ret ptr %.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, !10, i64 24}
!6 = !{!"sc_buf", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !11, i64 40, !12, i64 44}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!"_Bool", !8, i64 0}
!13 = !{!6, !10, i64 32}
!14 = !{!6, !11, i64 40}
!15 = !{!6, !7, i64 0}


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