; LLVM IR from caryll/otfcc :: lib/support/buffer (buffer)

; 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.caryll_Buffer = type { i64, i64, i64, ptr }

; Function Attrs: nounwind uwtable
declare hidden void @bufbeforewrite(ptr noundef, i64 noundef) #0

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local void @bufwrite_bytes(ptr noundef %0, i64 noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %10, label %9

9:                                                ; preds = %3
  br label %31

10:                                               ; preds = %3
  %11 = load i64, ptr %5, align 8, !tbaa !9
  %12 = icmp ne i64 %11, 0
  br i1 %12, label %14, label %13

13:                                               ; preds = %10
  br label %31

14:                                               ; preds = %10
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = load i64, ptr %5, align 8, !tbaa !9
  call void @bufbeforewrite(ptr noundef %15, i64 noundef %16)
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.caryll_Buffer, ptr %17, i32 0, i32 3
  %19 = load ptr, ptr %18, align 8, !tbaa !11
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.caryll_Buffer, ptr %20, i32 0, i32 0
  %22 = load i64, ptr %21, align 8, !tbaa !13
  %23 = getelementptr inbounds i8, ptr %19, i64 %22
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %23, ptr align 1 %24, i64 %25, i1 false)
  %26 = load i64, ptr %5, align 8, !tbaa !9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.caryll_Buffer, ptr %27, i32 0, i32 0
  %29 = load i64, ptr %28, align 8, !tbaa !13
  %30 = add i64 %29, %26
  store i64 %30, ptr %28, align 8, !tbaa !13
  br label %31

31:                                               ; preds = %14, %13, %9
  ret void
}

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" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 24}
!12 = !{!"caryll_Buffer", !10, i64 0, !10, i64 8, !10, i64 16, !6, i64 24}
!13 = !{!12, !10, 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 hidden void @bufbeforewrite(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
define dso_local void @bufwrite_bytes(ptr noundef %0, i64 noundef %1, ptr noundef readonly %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %2, null
  %5 = icmp ne i64 %1, 0
  %or.cond = and i1 %5, %4
  br i1 %or.cond, label %6, label %13

6:                                                ; preds = %3
  tail call void @bufbeforewrite(ptr noundef %0, i64 noundef %1)
  %7 = getelementptr inbounds i8, ptr %0, i64 24
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %9 = load i64, ptr %0, align 8, !tbaa !11
  %10 = getelementptr inbounds i8, ptr %8, i64 %9
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %10, ptr nonnull align 1 %2, i64 %1, i1 false)
  %11 = load i64, ptr %0, align 8, !tbaa !11
  %12 = add i64 %11, %1
  store i64 %12, ptr %0, align 8, !tbaa !11
  br label %13

13:                                               ; preds = %3, %6
  ret void
}

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" }
attributes #1 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"caryll_Buffer", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}


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