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//===- RuntimeLibcalls.cpp - Interface for runtime libcalls -----*- 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 "llvm/IR/RuntimeLibcalls.h"
#include "llvm/ADT/StringTable.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/xxhash.h"
#include "llvm/TargetParser/ARMTargetParser.h"
#define DEBUG_TYPE "runtime-libcalls-info"
using namespace llvm;
using namespace RTLIB;
#define GET_INIT_RUNTIME_LIBCALL_NAMES
#define GET_SET_TARGET_RUNTIME_LIBCALL_SETS
#define DEFINE_GET_LOOKUP_LIBCALL_IMPL_NAME
#include "llvm/IR/RuntimeLibcalls.inc"
#undef GET_INIT_RUNTIME_LIBCALL_NAMES
#undef GET_SET_TARGET_RUNTIME_LIBCALL_SETS
#undef DEFINE_GET_LOOKUP_LIBCALL_IMPL_NAME
/// Set default libcall names. If a target wants to opt-out of a libcall it
/// should be placed here.
void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,
ExceptionHandling ExceptionModel,
FloatABI::ABIType FloatABI,
EABI EABIVersion, StringRef ABIName) {
setTargetRuntimeLibcallSets(TT, ExceptionModel, FloatABI, EABIVersion,
ABIName);
}
LLVM_ATTRIBUTE_ALWAYS_INLINE
iota_range<RTLIB::LibcallImpl>
RuntimeLibcallsInfo::libcallImplNameHit(uint16_t NameOffsetEntry,
uint16_t StrOffset) {
int NumAliases = 1;
for (uint16_t Entry : ArrayRef(RuntimeLibcallNameOffsetTable)
.drop_front(NameOffsetEntry + 1)) {
if (Entry != StrOffset)
break;
++NumAliases;
}
RTLIB::LibcallImpl ImplStart = static_cast<RTLIB::LibcallImpl>(
&RuntimeLibcallNameOffsetTable[NameOffsetEntry] -
&RuntimeLibcallNameOffsetTable[0]);
return enum_seq(ImplStart,
static_cast<RTLIB::LibcallImpl>(ImplStart + NumAliases));
}
bool RuntimeLibcallsInfo::isAAPCS_ABI(const Triple &TT, StringRef ABIName) {
const ARM::ARMABI TargetABI = ARM::computeTargetABI(TT, ABIName);
return TargetABI == ARM::ARM_ABI_AAPCS || TargetABI == ARM::ARM_ABI_AAPCS16;
}
bool RuntimeLibcallsInfo::darwinHasExp10(const Triple &TT) {
switch (TT.getOS()) {
case Triple::MacOSX:
return !TT.isMacOSXVersionLT(10, 9);
case Triple::IOS:
return !TT.isOSVersionLT(7, 0);
case Triple::DriverKit:
case Triple::TvOS:
case Triple::WatchOS:
case Triple::XROS:
case Triple::BridgeOS:
return true;
default:
return false;
}
}
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