; LLVM IR from brewlin/garbage-collect :: gc-python (gc)

; 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"

@.str.23 = external hidden unnamed_addr constant [16 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @gc_malloc(i64 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @gc_realloc(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %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
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %17, label %9

9:                                                ; preds = %2
  %10 = load i64, ptr %5, align 8, !tbaa !9
  %11 = icmp ult i64 %10, 0
  br i1 %11, label %12, label %14

12:                                               ; preds = %9
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.23)
  call void @exit(i32 noundef 1) #5
  unreachable

14:                                               ; preds = %9
  %15 = load i64, ptr %5, align 8, !tbaa !9
  %16 = call ptr @gc_malloc(i64 noundef %15)
  store ptr %16, ptr %3, align 8
  br label %30

17:                                               ; preds = %2
  %18 = load i64, ptr %5, align 8, !tbaa !9
  %19 = icmp ult i64 %18, 0
  br i1 %19, label %20, label %22

20:                                               ; preds = %17
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  call void @gc_free(ptr noundef %21)
  store ptr null, ptr %3, align 8
  br label %30

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %23 = load i64, ptr %5, align 8, !tbaa !9
  %24 = call ptr @gc_malloc(i64 noundef %23)
  store ptr %24, ptr %6, align 8, !tbaa !5
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = load i64, ptr %5, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %25, ptr align 1 %26, i64 %27, i1 false)
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  call void @gc_free(ptr noundef %28)
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %29, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  br label %30

30:                                               ; preds = %22, %20, %14
  %31 = load ptr, ptr %3, align 8
  ret ptr %31
}

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #3

; Function Attrs: nounwind uwtable
declare dso_local void @gc_free(ptr noundef) #1

; 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) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { "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 #3 = { noreturn nounwind "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 #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { noreturn nounwind }
attributes #6 = { 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, !10, i64 0}
!10 = !{!"long", !7, 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 dso_local ptr @gc_malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @gc_realloc(ptr noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq ptr %0, null
  %3 = tail call ptr @gc_malloc(i64 noundef %1)
  br i1 %.not, label %5, label %4

4:                                                ; preds = %2
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %3, ptr nonnull align 1 %0, i64 %1, i1 false)
  tail call void @gc_free(ptr noundef nonnull %0)
  br label %5

5:                                                ; preds = %2, %4
  ret ptr %3
}

; Function Attrs: nounwind uwtable
declare dso_local void @gc_free(ptr 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

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)"}


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