// #target: linux-x64
module overlap;
import std::io;

interface TestProto
{
	fn void tesT();
}

interface TestProto2
{
	fn void tesT();
}

fn void Test.tesT(&self) @dynamic
{
}

fn void Test.foo(&self) @dynamic {}

struct Test (TestProto, TestProto2)
{
	void* abc;
}

fn void main()
{
	TestProto z = mem::alloc(Test);
	z.tesT();
	TestProto2 w = (TestProto2)z;
	w.tesT();
}

/* #expect: overlap.ll

%.introspect = type { i8, i64, ptr, i64, i64, i64, [0 x i64] }
%any = type { ptr, i64 }

@"$ct.overlap.Test" = linkonce global %.introspect { i8 10, i64 0, ptr null, i64 8, i64 0, i64 1, [0 x i64] zeroinitializer }, comdat, align 8
@"$sel.tesT" = linkonce_odr constant [5 x i8] c"tesT\00", comdat, align 1
@.panic_msg = internal constant [42 x i8] c"No method 'tesT' could be found on target\00", align 1
@.file = internal constant [30 x i8] c"overlapping_function_linux.c3\00", align 1
@.func = internal constant [5 x i8] c"main\00", align 1
@std.core.builtin.panic = extern_weak global ptr, align 8
@"$ct.dyn.overlap.Test.tesT" = weak global { ptr, ptr, ptr } { ptr @overlap.Test.tesT, ptr @"$sel.tesT", ptr inttoptr (i64 -1 to ptr) }, comdat, align 8
@"$ct.dyn.overlap.Test.foo" = weak global { ptr, ptr, ptr } { ptr @overlap.Test.foo, ptr @"$sel.foo", ptr inttoptr (i64 -1 to ptr) }, comdat, align 8
@"$sel.foo" = linkonce_odr constant [4 x i8] c"foo\00", comdat, align 1
@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 1, ptr @.c3_dynamic_register, ptr null }]

; Function Attrs: nounwind uwtable
define void @overlap.Test.tesT(ptr %0) #0 {
entry:
  ret void
}

define void @overlap.Test.foo(ptr %0) #0 {
entry:
  ret void
}

define void @overlap.main() #0 {
entry:
  %z = alloca %any, align 8
  %.inlinecache = alloca ptr, align 8
  %.cachedtype = alloca ptr, align 8
  %w = alloca %any, align 8
  %.inlinecache2 = alloca ptr, align 8
  %.cachedtype3 = alloca ptr, align 8
  store ptr null, ptr %.cachedtype3, align 8
  store ptr null, ptr %.cachedtype, align 8
  %0 = call ptr @std.core.mem.malloc(i64 8) #1
  %1 = insertvalue %any undef, ptr %0, 0
  %2 = insertvalue %any %1, i64 ptrtoint (ptr @"$ct.overlap.Test" to i64), 1
  store %any %2, ptr %z, align 8
  %ptradd = getelementptr inbounds i8, ptr %z, i64 8
  %3 = load i64, ptr %ptradd, align 8
  %4 = inttoptr i64 %3 to ptr
  %5 = load ptr, ptr %.cachedtype, align 8
  %6 = icmp eq ptr %4, %5
  br i1 %6, label %cache_hit, label %cache_miss

cache_miss:                                       ; preds = %entry
  %7 = call ptr @.dyn_search(ptr %4, ptr @"$sel.tesT")
  store ptr %7, ptr %.inlinecache, align 8
  store ptr %4, ptr %.cachedtype, align 8
  br label %9

cache_hit:                                        ; preds = %entry
  %8 = load ptr, ptr %.inlinecache, align 8
  br label %9

9:                                                ; preds = %cache_hit, %cache_miss
  %fn_phi = phi ptr [ %8, %cache_hit ], [ %7, %cache_miss ]
  %10 = icmp eq ptr %fn_phi, null
  br i1 %10, label %missing_function, label %match

missing_function:                                 ; preds = %9
  %11 = load ptr, ptr @std.core.builtin.panic, align 8
  call void %11(ptr @.panic_msg, i64 41, ptr @.file
  unreachable

match:                                            ; preds = %9
  %12 = load ptr, ptr %z, align 8
  call void %fn_phi(ptr %12)
  %13 = load %any, ptr %z, align 8
  store %any %13, ptr %w, align 8
  %ptradd1 = getelementptr inbounds i8, ptr %w, i64 8
  %14 = load i64, ptr %ptradd1, align 8
  %15 = inttoptr i64 %14 to ptr
  %16 = load ptr, ptr %.cachedtype3, align 8
  %17 = icmp eq ptr %15, %16
  br i1 %17, label %cache_hit5, label %cache_miss4

cache_miss4:                                      ; preds = %match
  %18 = call ptr @.dyn_search(ptr %15, ptr @"$sel.tesT")
  store ptr %18, ptr %.inlinecache2, align 8
  store ptr %15, ptr %.cachedtype3, align 8
  br label %20

cache_hit5:                                       ; preds = %match
  %19 = load ptr, ptr %.inlinecache2, align 8
  br label %20

20:                                               ; preds = %cache_hit5, %cache_miss4
  %fn_phi6 = phi ptr [ %19, %cache_hit5 ], [ %18, %cache_miss4 ]
  %21 = icmp eq ptr %fn_phi6, null
  br i1 %21, label %missing_function7, label %match8

missing_function7:                                ; preds = %20
  %22 = load ptr, ptr @std.core.builtin.panic, align 8
  call void %22(ptr @.panic_msg, i64 41, ptr @.file
  unreachable

match8:                                           ; preds = %20
  %23 = load ptr, ptr %w, align 8
  call void %fn_phi6(ptr %23)
  ret void
}

define i32 @main(i32 %0, ptr %1) #0 {
entry:
  call void @overlap.main()
  ret i32 0
}
define weak ptr @.dyn_search(ptr %0, ptr %1) unnamed_addr comdat {
entry:
  br label %get_dtable

get_dtable:                                       ; preds = %next_parent, %entry
  %typeid = phi ptr [ %0, %entry ], [ %parent_ptr, %next_parent ]
  %dtable_ref = getelementptr inbounds
  %dtable = load ptr, ptr %dtable_ref, align 8
  br label %check

check:                                            ; preds = %no_match, %get_dtable
  %2 = phi ptr [ %dtable, %get_dtable ], [ %10, %no_match ]
  %3 = icmp eq ptr %2, null
  br i1 %3, label %next_parent, label %compare

next_parent:                                      ; preds = %check
  %parent_ref = getelementptr inbounds
  %parent = load i64, ptr %parent_ref, align 8
  %parent_ptr = inttoptr i64 %parent to ptr
  %4 = icmp eq ptr %parent_ptr, null
  br i1 %4, label %missing_function, label %get_dtable

missing_function:                                 ; preds = %next_parent
  ret ptr null

compare:                                          ; preds = %check
  %5 = getelementptr inbounds
  %6 = load ptr, ptr %5, align 8
  %7 = icmp eq ptr %6, %1
  br i1 %7, label %match, label %no_match

match:                                            ; preds = %compare
  %8 = load ptr, ptr %2, align 8
  ret ptr %8

no_match:                                         ; preds = %compare
  %9 = getelementptr inbounds
  %10 = load ptr, ptr %9, align 8
  br label %check
}

define internal void @.c3_dynamic_register() align 8 {
entry:
  %next_val = load ptr, ptr getelementptr inbounds
  %0 = icmp eq ptr %next_val, inttoptr (i64 -1 to ptr)
  br i1 %0, label %dtable_check, label %dtable_skip
dtable_check:                                     ; preds = %dtable_check, %entry
  %dtable_ref = phi ptr [ getelementptr inbounds
  %dtable_ptr = load ptr, ptr %dtable_ref, align 8
  %1 = icmp eq ptr %dtable_ptr, null
  %next_dtable_ref = getelementptr inbounds
  br i1 %1, label %dtable_found, label %dtable_check
dtable_found:                                     ; preds = %dtable_check
  store ptr @"$ct.dyn.overlap.Test.tesT", ptr %dtable_ref, align 8
  store ptr null, ptr getelementptr inbounds
  br label %dtable_skip
dtable_skip:                                      ; preds = %dtable_found, %entry
  %next_val1 = load ptr, ptr getelementptr inbounds
  %2 = icmp eq ptr %next_val1, inttoptr (i64 -1 to ptr)
  br i1 %2, label %dtable_check2, label %dtable_skip7
dtable_check2:                                    ; preds = %dtable_check2, %dtable_skip
  %dtable_ref3 = phi ptr [ getelementptr inbounds
  %dtable_ptr4 = load ptr, ptr %dtable_ref3, align 8
  %3 = icmp eq ptr %dtable_ptr4, null
  %next_dtable_ref5 = getelementptr inbounds
  br i1 %3, label %dtable_found6, label %dtable_check2
dtable_found6:                                    ; preds = %dtable_check2
  store ptr @"$ct.dyn.overlap.Test.foo", ptr %dtable_ref3, align 8
  store ptr null, ptr getelementptr inbounds
  br label %dtable_skip7
dtable_skip7:                                     ; preds = %dtable_found6, %dtable_skip
  ret void
}