; LLVM IR from aagdev/mlimgsynth :: src/ccommon (stream)

; 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.Stream = type { ptr, ptr, ptr, ptr, ptr, %struct.StreamInt, i64, i32 }
%struct.StreamInt = type { [3 x ptr] }

@g_allocator = external global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @stream_buffer_free(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.Stream, ptr %3, i32 0, i32 7
  %5 = load i32, ptr %4, align 8, !tbaa !9
  %6 = and i32 %5, 8
  %7 = icmp ne i32 %6, 0
  br i1 %7, label %8, label %17

8:                                                ; preds = %1
  %9 = load ptr, ptr @g_allocator, align 8, !tbaa !5
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.Stream, ptr %10, i32 0, i32 2
  %12 = load ptr, ptr %11, align 8, !tbaa !14
  call void @alloc_free(ptr noundef %9, ptr noundef %12)
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.Stream, ptr %13, i32 0, i32 7
  %15 = load i32, ptr %14, align 8, !tbaa !9
  %16 = and i32 %15, -9
  store i32 %16, ptr %14, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %8, %1
  %18 = load ptr, ptr %2, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Stream, ptr %18, i32 0, i32 3
  store ptr null, ptr %19, align 8, !tbaa !15
  %20 = load ptr, ptr %2, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.Stream, ptr %20, i32 0, i32 2
  store ptr null, ptr %21, align 8, !tbaa !14
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @alloc_free(ptr noundef, ptr noundef) #1

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 = { inlinehint 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, !13, i64 72}
!10 = !{!"Stream", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !11, i64 40, !12, i64 64, !13, i64 72}
!11 = !{!"StreamInt", !7, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!10, !6, i64 16}
!15 = !{!10, !6, 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"

@g_allocator = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @stream_buffer_free(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 72
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = and i32 %3, 8
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %11, label %5

5:                                                ; preds = %1
  %6 = load ptr, ptr @g_allocator, align 8, !tbaa !13
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load ptr, ptr %7, align 8, !tbaa !14
  tail call void @alloc_free(ptr noundef %6, ptr noundef %8)
  %9 = load i32, ptr %2, align 8, !tbaa !5
  %10 = and i32 %9, -9
  store i32 %10, ptr %2, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %5, %1
  %12 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %12, i8 0, i64 16, i1 false)
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @alloc_free(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

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 = { inlinehint 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 = { 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, !12, i64 72}
!6 = !{!"Stream", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !10, i64 40, !11, i64 64, !12, i64 72}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"StreamInt", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!"int", !8, i64 0}
!13 = !{!7, !7, i64 0}
!14 = !{!6, !7, i64 16}


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