1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
use crate::base;
use crate::traits::*;
use rustc_hir as hir;
use rustc_middle::mir::mono::{Linkage, Visibility};
use rustc_middle::ty::layout::HasTyCtxt;
use rustc_middle::mir::mono::MonoItem;
pub trait MonoItemExt<'a, 'tcx> {
fn define<Bx: BuilderMethods<'a, 'tcx>>(&self, cx: &'a Bx::CodegenCx);
fn predefine<Bx: BuilderMethods<'a, 'tcx>>(
&self,
cx: &'a Bx::CodegenCx,
linkage: Linkage,
visibility: Visibility,
);
fn to_raw_string(&self) -> String;
}
impl<'a, 'tcx: 'a> MonoItemExt<'a, 'tcx> for MonoItem<'tcx> {
fn define<Bx: BuilderMethods<'a, 'tcx>>(&self, cx: &'a Bx::CodegenCx) {
debug!(
"BEGIN IMPLEMENTING '{} ({})' in cgu {}",
self,
self.to_raw_string(),
cx.codegen_unit().name()
);
match *self {
MonoItem::Static(def_id) => {
cx.codegen_static(def_id, cx.tcx().is_mutable_static(def_id));
}
MonoItem::GlobalAsm(item_id) => {
let item = cx.tcx().hir().item(item_id);
if let hir::ItemKind::GlobalAsm(ref ga) = item.kind {
cx.codegen_global_asm(ga);
} else {
span_bug!(item.span, "Mismatch between hir::Item type and MonoItem type")
}
}
MonoItem::Fn(instance) => {
base::codegen_instance::<Bx>(&cx, instance);
}
}
debug!(
"END IMPLEMENTING '{} ({})' in cgu {}",
self,
self.to_raw_string(),
cx.codegen_unit().name()
);
}
fn predefine<Bx: BuilderMethods<'a, 'tcx>>(
&self,
cx: &'a Bx::CodegenCx,
linkage: Linkage,
visibility: Visibility,
) {
debug!(
"BEGIN PREDEFINING '{} ({})' in cgu {}",
self,
self.to_raw_string(),
cx.codegen_unit().name()
);
let symbol_name = self.symbol_name(cx.tcx()).name;
debug!("symbol {}", &symbol_name);
match *self {
MonoItem::Static(def_id) => {
cx.predefine_static(def_id, linkage, visibility, &symbol_name);
}
MonoItem::Fn(instance) => {
cx.predefine_fn(instance, linkage, visibility, &symbol_name);
}
MonoItem::GlobalAsm(..) => {}
}
debug!(
"END PREDEFINING '{} ({})' in cgu {}",
self,
self.to_raw_string(),
cx.codegen_unit().name()
);
}
fn to_raw_string(&self) -> String {
match *self {
MonoItem::Fn(instance) => {
format!("Fn({:?}, {})", instance.def, instance.substs.as_ptr() as usize)
}
MonoItem::Static(id) => format!("Static({:?})", id),
MonoItem::GlobalAsm(id) => format!("GlobalAsm({:?})", id),
}
}
}
|
