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//===- AMDGPUDelayedMCExpr.cpp - Delayed MCExpr resolve ---------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "AMDGPUDelayedMCExpr.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCValue.h"
using namespace llvm;
static msgpack::DocNode getNode(msgpack::DocNode DN, msgpack::Type Type,
MCValue Val) {
msgpack::Document *Doc = DN.getDocument();
switch (Type) {
default:
return Doc->getEmptyNode();
case msgpack::Type::Int:
return Doc->getNode(static_cast<int64_t>(Val.getConstant()));
case msgpack::Type::UInt:
return Doc->getNode(static_cast<uint64_t>(Val.getConstant()));
case msgpack::Type::Boolean:
return Doc->getNode(static_cast<bool>(Val.getConstant()));
}
}
void DelayedMCExprs::assignDocNode(msgpack::DocNode &DN, msgpack::Type Type,
const MCExpr *ExprValue) {
MCValue Res;
if (ExprValue->evaluateAsRelocatable(Res, nullptr, nullptr)) {
if (Res.isAbsolute()) {
DN = getNode(DN, Type, Res);
return;
}
}
DelayedExprs.emplace_back(DN, Type, ExprValue);
}
bool DelayedMCExprs::resolveDelayedExpressions() {
while (!DelayedExprs.empty()) {
Expr DE = DelayedExprs.front();
MCValue Res;
if (!DE.ExprValue->evaluateAsRelocatable(Res, nullptr, nullptr) ||
!Res.isAbsolute())
return false;
DelayedExprs.pop_front();
DE.DN = getNode(DE.DN, DE.Type, Res);
}
return true;
}
void DelayedMCExprs::clear() { DelayedExprs.clear(); }
bool DelayedMCExprs::empty() { return DelayedExprs.empty(); }
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