; LLVM IR from LeoVen/C-Macro-Collections :: examples (sac_example)

; 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.cmc_alloc_node = type { ptr, ptr, ptr, ptr }
%struct.list = type { [100 x i32], i64, i32, ptr, ptr }

@cmc_alloc_node_default = external hidden global %struct.cmc_alloc_node, align 8

; Function Attrs: nounwind uwtable
define dso_local ptr @l_new_custom(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = 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
  %10 = load ptr, ptr %7, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %3
  store ptr @cmc_alloc_node_default, ptr %6, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %13, %3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.cmc_alloc_node, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = call ptr %17(i64 noundef 432)
  store ptr %18, ptr %8, align 8, !tbaa !5
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = icmp ne ptr %19, null
  br i1 %20, label %22, label %21

21:                                               ; preds = %14
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %37

22:                                               ; preds = %14
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.list, ptr %23, i32 0, i32 0
  %25 = getelementptr inbounds [100 x i32], ptr %24, i64 0, i64 0
  call void @llvm.memset.p0.i64(ptr align 8 %25, i8 0, i64 400, i1 false)
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.list, ptr %26, i32 0, i32 1
  store i64 0, ptr %27, align 8, !tbaa !11
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.list, ptr %28, i32 0, i32 2
  store i32 0, ptr %29, align 8, !tbaa !15
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.list, ptr %31, i32 0, i32 3
  store ptr %30, ptr %32, align 8, !tbaa !16
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.list, ptr %34, i32 0, i32 4
  store ptr %33, ptr %35, align 8, !tbaa !17
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %36, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %37

37:                                               ; preds = %22, %21
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %38 = load ptr, ptr %4, align 8
  ret ptr %38
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

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

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { 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, !6, i64 0}
!10 = !{!"cmc_alloc_node", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!11 = !{!12, !13, i64 400}
!12 = !{!"list", !7, i64 0, !13, i64 400, !14, i64 408, !6, i64 416, !6, i64 424}
!13 = !{!"long", !7, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!12, !14, i64 408}
!16 = !{!12, !6, i64 416}
!17 = !{!12, !6, i64 424}


; 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"

%struct.cmc_alloc_node = type { ptr, ptr, ptr, ptr }

@cmc_alloc_node_default = external hidden global %struct.cmc_alloc_node, align 8

; Function Attrs: nounwind uwtable
define dso_local ptr @l_new_custom(ptr noundef %0, ptr noundef %1, ptr nocapture noundef readnone %2) local_unnamed_addr #0 {
  %.not = icmp eq ptr %1, null
  %spec.store.select = select i1 %.not, ptr @cmc_alloc_node_default, ptr %1
  %4 = load ptr, ptr %spec.store.select, align 8, !tbaa !5
  %5 = tail call ptr %4(i64 noundef 432) #2
  %.not14 = icmp eq ptr %5, null
  br i1 %.not14, label %9, label %6

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %5, i64 416
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(412) %5, i8 0, i64 412, i1 false)
  store ptr %0, ptr %7, align 8, !tbaa !10
  %8 = getelementptr inbounds i8, ptr %5, i64 424
  store ptr %spec.store.select, ptr %8, align 8, !tbaa !14
  br label %9

9:                                                ; preds = %3, %6
  ret ptr %5
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
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, !7, i64 0}
!6 = !{!"cmc_alloc_node", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!11, !7, i64 416}
!11 = !{!"list", !8, i64 0, !12, i64 400, !13, i64 408, !7, i64 416, !7, i64 424}
!12 = !{!"long", !8, i64 0}
!13 = !{!"int", !8, i64 0}
!14 = !{!11, !7, i64 424}


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