1c5b1501ca
Previously libcall lowering decisions were made directly in the TargetLowering constructor. Pull these into the subtarget to facilitate turning LibcallLoweringInfo into a separate analysis in the future.
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
//===- LibcallLoweringInfo.cpp - Interface for runtime libcalls -----------===//
|
|
//
|
|
// 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 "llvm/CodeGen/LibcallLoweringInfo.h"
|
|
#include "llvm/CodeGen/TargetSubtargetInfo.h"
|
|
|
|
using namespace llvm;
|
|
|
|
LibcallLoweringInfo::LibcallLoweringInfo(
|
|
const RTLIB::RuntimeLibcallsInfo &RTLCI,
|
|
const TargetSubtargetInfo &Subtarget)
|
|
: RTLCI(RTLCI) {
|
|
// TODO: This should be generated with lowering predicates, and assert the
|
|
// call is available.
|
|
for (RTLIB::LibcallImpl Impl : RTLIB::libcall_impls()) {
|
|
if (RTLCI.isAvailable(Impl)) {
|
|
RTLIB::Libcall LC = RTLIB::RuntimeLibcallsInfo::getLibcallFromImpl(Impl);
|
|
// FIXME: Hack, assume the first available libcall wins.
|
|
if (LibcallImpls[LC] == RTLIB::Unsupported)
|
|
LibcallImpls[LC] = Impl;
|
|
}
|
|
}
|
|
|
|
Subtarget.initLibcallLoweringInfo(*this);
|
|
}
|