1 //===- AMDGPUDelayedMCExpr.cpp - Delayed MCExpr resolve ---------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "AMDGPUDelayedMCExpr.h"
10 #include "llvm/MC/MCExpr.h"
11 #include "llvm/MC/MCValue.h"
12
13 using namespace llvm;
14
getNode(msgpack::DocNode DN,msgpack::Type Type,MCValue Val)15 static msgpack::DocNode getNode(msgpack::DocNode DN, msgpack::Type Type,
16 MCValue Val) {
17 msgpack::Document *Doc = DN.getDocument();
18 switch (Type) {
19 default:
20 return Doc->getEmptyNode();
21 case msgpack::Type::Int:
22 return Doc->getNode(static_cast<int64_t>(Val.getConstant()));
23 case msgpack::Type::UInt:
24 return Doc->getNode(static_cast<uint64_t>(Val.getConstant()));
25 case msgpack::Type::Boolean:
26 return Doc->getNode(static_cast<bool>(Val.getConstant()));
27 }
28 }
29
assignDocNode(msgpack::DocNode & DN,msgpack::Type Type,const MCExpr * ExprValue)30 void DelayedMCExprs::assignDocNode(msgpack::DocNode &DN, msgpack::Type Type,
31 const MCExpr *ExprValue) {
32 MCValue Res;
33 if (ExprValue->evaluateAsRelocatable(Res, nullptr, nullptr)) {
34 if (Res.isAbsolute()) {
35 DN = getNode(DN, Type, Res);
36 return;
37 }
38 }
39
40 DelayedExprs.emplace_back(DN, Type, ExprValue);
41 }
42
resolveDelayedExpressions()43 bool DelayedMCExprs::resolveDelayedExpressions() {
44 while (!DelayedExprs.empty()) {
45 Expr DE = DelayedExprs.front();
46 MCValue Res;
47
48 if (!DE.ExprValue->evaluateAsRelocatable(Res, nullptr, nullptr) ||
49 !Res.isAbsolute())
50 return false;
51
52 DelayedExprs.pop_front();
53 DE.DN = getNode(DE.DN, DE.Type, Res);
54 }
55
56 return true;
57 }
58
clear()59 void DelayedMCExprs::clear() { DelayedExprs.clear(); }
60
empty()61 bool DelayedMCExprs::empty() { return DelayedExprs.empty(); }
62