; LLVM IR from octu0/blurry :: buffer (init_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.halide_buffer_t = type { i64, ptr, ptr, i64, %struct.halide_type_t, i32, ptr, ptr }
%struct.halide_type_t = type { i8, i8, i16 }

; Function Attrs: nounwind uwtable
define dso_local void @init_buf(ptr noundef %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !9
  %9 = load i32, ptr %8, align 4, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.halide_buffer_t, ptr %10, i32 0, i32 5
  store i32 %9, ptr %11, align 4, !tbaa !11
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.halide_buffer_t, ptr %13, i32 0, i32 6
  store ptr %12, ptr %14, align 8, !tbaa !16
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.halide_buffer_t, ptr %15, i32 0, i32 0
  store i64 0, ptr %16, align 8, !tbaa !17
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.halide_buffer_t, ptr %17, i32 0, i32 1
  store ptr null, ptr %18, align 8, !tbaa !18
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.halide_buffer_t, ptr %20, i32 0, i32 2
  store ptr %19, ptr %21, align 8, !tbaa !19
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.halide_buffer_t, ptr %22, i32 0, i32 3
  store i64 1, ptr %23, align 8, !tbaa !20
  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" }

!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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 36}
!12 = !{!"halide_buffer_t", !13, i64 0, !6, i64 8, !6, i64 16, !13, i64 24, !14, i64 32, !10, i64 36, !6, i64 40, !6, i64 48}
!13 = !{!"long", !7, i64 0}
!14 = !{!"halide_type_t", !7, i64 0, !7, i64 1, !15, i64 2}
!15 = !{!"short", !7, i64 0}
!16 = !{!12, !6, i64 40}
!17 = !{!12, !13, i64 0}
!18 = !{!12, !6, i64 8}
!19 = !{!12, !6, i64 16}
!20 = !{!12, !13, i64 24}


; 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 norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @init_buf(ptr nocapture noundef writeonly %0, ptr noundef %1, ptr noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = getelementptr inbounds i8, ptr %0, i64 36
  store i32 %3, ptr %5, align 4, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 40
  store ptr %1, ptr %6, align 8, !tbaa !14
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %0, i8 0, i64 16, i1 false)
  store ptr %2, ptr %7, align 8, !tbaa !15
  %8 = getelementptr inbounds i8, ptr %0, i64 24
  store i64 1, ptr %8, align 8, !tbaa !16
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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: write) }

!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, !13, i64 36}
!6 = !{!"halide_buffer_t", !7, i64 0, !10, i64 8, !10, i64 16, !7, i64 24, !11, i64 32, !13, i64 36, !10, i64 40, !10, i64 48}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"halide_type_t", !8, i64 0, !8, i64 1, !12, i64 2}
!12 = !{!"short", !8, i64 0}
!13 = !{!"int", !8, i64 0}
!14 = !{!6, !10, i64 40}
!15 = !{!6, !10, i64 16}
!16 = !{!6, !7, i64 24}


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