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//===----------------------------------------------------------------------===//
//
// 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 "RuntimeLibcalls.h"
#include "llvm/TableGen/Error.h"
using namespace llvm;
RuntimeLibcalls::RuntimeLibcalls(const RecordKeeper &Records) {
ArrayRef<const Record *> AllRuntimeLibcalls =
Records.getAllDerivedDefinitions("RuntimeLibcall");
RuntimeLibcallDefList.reserve(AllRuntimeLibcalls.size());
size_t CallTypeEnumVal = 0;
for (const Record *RuntimeLibcallDef : AllRuntimeLibcalls) {
RuntimeLibcallDefList.emplace_back(RuntimeLibcallDef, CallTypeEnumVal++);
Def2RuntimeLibcall[RuntimeLibcallDef] = &RuntimeLibcallDefList.back();
}
for (RuntimeLibcall &LibCall : RuntimeLibcallDefList)
Def2RuntimeLibcall[LibCall.getDef()] = &LibCall;
ArrayRef<const Record *> AllRuntimeLibcallImplsRaw =
Records.getAllDerivedDefinitions("RuntimeLibcallImpl");
SmallVector<const Record *, 1024> AllRuntimeLibcallImpls(
AllRuntimeLibcallImplsRaw);
// Sort by libcall impl name and secondarily by the enum name.
sort(AllRuntimeLibcallImpls, [](const Record *A, const Record *B) {
return std::pair(A->getValueAsString("LibCallFuncName"), A->getName()) <
std::pair(B->getValueAsString("LibCallFuncName"), B->getName());
});
RuntimeLibcallImplDefList.reserve(AllRuntimeLibcallImpls.size());
size_t LibCallImplEnumVal = 1;
for (const Record *LibCallImplDef : AllRuntimeLibcallImpls) {
RuntimeLibcallImplDefList.emplace_back(LibCallImplDef, Def2RuntimeLibcall,
LibCallImplEnumVal++);
const RuntimeLibcallImpl &LibCallImpl = RuntimeLibcallImplDefList.back();
Def2RuntimeLibcallImpl[LibCallImplDef] = &LibCallImpl;
if (LibCallImpl.isDefault()) {
const RuntimeLibcall *Provides = LibCallImpl.getProvides();
if (!Provides)
PrintFatalError(LibCallImplDef->getLoc(),
"default implementations must provide a libcall");
LibCallToDefaultImpl[Provides] = &LibCallImpl;
}
}
}
void LibcallPredicateExpander::expand(SetTheory &ST, const Record *Def,
SetTheory::RecSet &Elts) {
assert(Def->isSubClassOf("LibcallImpls"));
SetTheory::RecSet TmpElts;
ST.evaluate(Def->getValueInit("MemberList"), TmpElts, Def->getLoc());
Elts.insert(TmpElts.begin(), TmpElts.end());
AvailabilityPredicate AP(Def->getValueAsDef("AvailabilityPredicate"));
const Record *CCClass = Def->getValueAsOptionalDef("CallingConv");
// This is assuming we aren't conditionally applying a calling convention to
// some subsets, and not another, but this doesn't appear to be used.
for (const Record *LibcallImplDef : TmpElts) {
const RuntimeLibcallImpl *LibcallImpl =
Libcalls.getRuntimeLibcallImpl(LibcallImplDef);
if (!AP.isAlwaysAvailable() || CCClass) {
auto [It, Inserted] = Func2Preds.insert({LibcallImpl, {{}, CCClass}});
if (!Inserted) {
PrintError(
Def,
"combining nested libcall set predicates currently unhandled: '" +
LibcallImpl->getLibcallFuncName() + "'");
}
It->second.first.push_back(AP.getDef());
It->second.second = CCClass;
}
}
}
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