; LLVM IR from BrunoLevy/learn-fpga :: LiteX/software/Doom/mc1-doom/src (i_net_dummy)

; 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.doomcom_t = type { i64, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, i16, %struct.doomdata_t }
%struct.doomdata_t = type { i32, i8, i8, i8, i8, [12 x %struct.ticcmd_t] }
%struct.ticcmd_t = type { i8, i8, i16, i16, i8, i8 }

@doomcom = external global ptr, align 8
@netgame = external global i32, align 4

; Function Attrs: nounwind uwtable
define dso_local void @I_InitNetwork() #0 {
  %1 = call noalias ptr @malloc(i64 noundef 144) #3
  store ptr %1, ptr @doomcom, align 8, !tbaa !5
  %2 = load ptr, ptr @doomcom, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 8 %2, i8 0, i64 144, i1 false)
  %3 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.doomcom_t, ptr %3, i32 0, i32 6
  store i16 1, ptr %4, align 2, !tbaa !9
  %5 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %6 = getelementptr inbounds %struct.doomcom_t, ptr %5, i32 0, i32 7
  store i16 0, ptr %6, align 4, !tbaa !15
  store i32 0, ptr @netgame, align 4, !tbaa !16
  %7 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.doomcom_t, ptr %7, i32 0, i32 0
  store i64 305419896, ptr %8, align 8, !tbaa !17
  %9 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.doomcom_t, ptr %9, i32 0, i32 5
  store i16 1, ptr %10, align 8, !tbaa !18
  %11 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.doomcom_t, ptr %11, i32 0, i32 14
  store i16 1, ptr %12, align 2, !tbaa !19
  %13 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.doomcom_t, ptr %13, i32 0, i32 8
  store i16 0, ptr %14, align 2, !tbaa !20
  %15 = load ptr, ptr @doomcom, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.doomcom_t, ptr %15, i32 0, i32 13
  store i16 0, ptr %16, align 8, !tbaa !21
  ret void
}

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #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 = { nounwind allocsize(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) }
attributes #3 = { nounwind allocsize(0) }

!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, !12, i64 18}
!10 = !{!"", !11, i64 0, !12, i64 8, !12, i64 10, !12, i64 12, !12, i64 14, !12, i64 16, !12, i64 18, !12, i64 20, !12, i64 22, !12, i64 24, !12, i64 26, !12, i64 28, !12, i64 30, !12, i64 32, !12, i64 34, !12, i64 36, !12, i64 38, !13, i64 40}
!11 = !{!"long", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!"", !14, i64 0, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !7, i64 8}
!14 = !{!"int", !7, i64 0}
!15 = !{!10, !12, i64 20}
!16 = !{!14, !14, i64 0}
!17 = !{!10, !11, i64 0}
!18 = !{!10, !12, i64 16}
!19 = !{!10, !12, i64 34}
!20 = !{!10, !12, i64 22}
!21 = !{!10, !12, i64 32}


; 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"

@doomcom = external local_unnamed_addr global ptr, align 8
@netgame = external local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree nounwind willreturn memory(write, argmem: none, inaccessiblemem: readwrite) uwtable
define dso_local void @I_InitNetwork() local_unnamed_addr #0 {
  %calloc = tail call dereferenceable_or_null(144) ptr @calloc(i64 1, i64 144)
  store ptr %calloc, ptr @doomcom, align 8, !tbaa !5
  %1 = getelementptr inbounds i8, ptr %calloc, i64 18
  store i16 1, ptr %1, align 2, !tbaa !9
  store i32 0, ptr @netgame, align 4, !tbaa !15
  store i64 305419896, ptr %calloc, align 8, !tbaa !16
  %2 = getelementptr inbounds i8, ptr %calloc, i64 16
  store i16 1, ptr %2, align 8, !tbaa !17
  %3 = getelementptr inbounds i8, ptr %calloc, i64 34
  store i16 1, ptr %3, align 2, !tbaa !18
  ret void
}

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree nounwind willreturn memory(write, argmem: none, inaccessiblemem: readwrite) 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 = { nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }

!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, !12, i64 18}
!10 = !{!"", !11, i64 0, !12, i64 8, !12, i64 10, !12, i64 12, !12, i64 14, !12, i64 16, !12, i64 18, !12, i64 20, !12, i64 22, !12, i64 24, !12, i64 26, !12, i64 28, !12, i64 30, !12, i64 32, !12, i64 34, !12, i64 36, !12, i64 38, !13, i64 40}
!11 = !{!"long", !7, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = !{!"", !14, i64 0, !7, i64 4, !7, i64 5, !7, i64 6, !7, i64 7, !7, i64 8}
!14 = !{!"int", !7, i64 0}
!15 = !{!14, !14, i64 0}
!16 = !{!10, !11, i64 0}
!17 = !{!10, !12, i64 16}
!18 = !{!10, !12, i64 34}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,TailCallElimPass