dc69b00b0a
Previously we had a table of entries for every Libcall for the comparison to use against an integer 0 if it was a soft float compare function. This was only relevant to a handful of opcodes, so it was wasteful. Now that we can distinguish the abstract libcall for the compare with the concrete implementation, we can just directly hardcode the comparison against the libcall impl without this configuration system.
359 lines
15 KiB
C++
359 lines
15 KiB
C++
//===- RuntimeLibcalls.cpp - Interface for runtime libcalls -----*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/RuntimeLibcalls.h"
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#include "llvm/Support/CommandLine.h"
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using namespace llvm;
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using namespace RTLIB;
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#define GET_INIT_RUNTIME_LIBCALL_NAMES
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#define GET_SET_TARGET_RUNTIME_LIBCALL_SETS
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#include "llvm/IR/RuntimeLibcalls.inc"
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#undef GET_INIT_RUNTIME_LIBCALL_NAMES
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#undef GET_SET_TARGET_RUNTIME_LIBCALL_SETS
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static cl::opt<bool>
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HexagonEnableFastMathRuntimeCalls("hexagon-fast-math", cl::Hidden,
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cl::desc("Enable Fast Math processing"));
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static void setARMLibcallNames(RuntimeLibcallsInfo &Info, const Triple &TT,
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FloatABI::ABIType FloatABIType,
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EABI EABIVersion) {
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if (!TT.isOSDarwin() && !TT.isiOS() && !TT.isWatchOS() && !TT.isDriverKit()) {
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CallingConv::ID DefaultCC = FloatABIType == FloatABI::Hard
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? CallingConv::ARM_AAPCS_VFP
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: CallingConv::ARM_AAPCS;
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for (RTLIB::LibcallImpl LC : RTLIB::libcall_impls())
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Info.setLibcallImplCallingConv(LC, DefaultCC);
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}
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// Register based DivRem for AEABI (RTABI 4.2)
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if (TT.isTargetAEABI() || TT.isAndroid() || TT.isTargetGNUAEABI() ||
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TT.isTargetMuslAEABI() || TT.isOSWindows()) {
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if (TT.isOSWindows()) {
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const struct {
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const RTLIB::Libcall Op;
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const RTLIB::LibcallImpl Impl;
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const CallingConv::ID CC;
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} LibraryCalls[] = {
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{RTLIB::SDIVREM_I32, RTLIB::__rt_sdiv, CallingConv::ARM_AAPCS},
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{RTLIB::SDIVREM_I64, RTLIB::__rt_sdiv64, CallingConv::ARM_AAPCS},
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{RTLIB::UDIVREM_I32, RTLIB::__rt_udiv, CallingConv::ARM_AAPCS},
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{RTLIB::UDIVREM_I64, RTLIB::__rt_udiv64, CallingConv::ARM_AAPCS},
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};
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for (const auto &LC : LibraryCalls) {
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Info.setLibcallImpl(LC.Op, LC.Impl);
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Info.setLibcallImplCallingConv(LC.Impl, LC.CC);
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}
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} else {
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const struct {
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const RTLIB::Libcall Op;
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const RTLIB::LibcallImpl Impl;
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const CallingConv::ID CC;
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} LibraryCalls[] = {
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{RTLIB::SDIVREM_I32, RTLIB::__aeabi_idivmod, CallingConv::ARM_AAPCS},
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{RTLIB::SDIVREM_I64, RTLIB::__aeabi_ldivmod, CallingConv::ARM_AAPCS},
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{RTLIB::UDIVREM_I32, RTLIB::__aeabi_uidivmod, CallingConv::ARM_AAPCS},
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{RTLIB::UDIVREM_I64, RTLIB::__aeabi_uldivmod, CallingConv::ARM_AAPCS},
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};
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for (const auto &LC : LibraryCalls) {
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Info.setLibcallImpl(LC.Op, LC.Impl);
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Info.setLibcallImplCallingConv(LC.Impl, LC.CC);
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}
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}
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}
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if (TT.isOSWindows()) {
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static const struct {
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const RTLIB::Libcall Op;
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const RTLIB::LibcallImpl Impl;
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const CallingConv::ID CC;
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} LibraryCalls[] = {
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{RTLIB::FPTOSINT_F32_I64, RTLIB::__stoi64, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::FPTOSINT_F64_I64, RTLIB::__dtoi64, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::FPTOUINT_F32_I64, RTLIB::__stou64, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::FPTOUINT_F64_I64, RTLIB::__dtou64, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::SINTTOFP_I64_F32, RTLIB::__i64tos, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::SINTTOFP_I64_F64, RTLIB::__i64tod, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::UINTTOFP_I64_F32, RTLIB::__u64tos, CallingConv::ARM_AAPCS_VFP},
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{RTLIB::UINTTOFP_I64_F64, RTLIB::__u64tod, CallingConv::ARM_AAPCS_VFP},
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};
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for (const auto &LC : LibraryCalls) {
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Info.setLibcallImpl(LC.Op, LC.Impl);
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Info.setLibcallImplCallingConv(LC.Impl, LC.CC);
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}
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}
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// Use divmod compiler-rt calls for iOS 5.0 and later.
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if (TT.isOSBinFormatMachO() && (!TT.isiOS() || !TT.isOSVersionLT(5, 0))) {
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Info.setLibcallImpl(RTLIB::SDIVREM_I32, RTLIB::__divmodsi4);
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Info.setLibcallImpl(RTLIB::UDIVREM_I32, RTLIB::__udivmodsi4);
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}
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}
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static void setLongDoubleIsF128Libm(RuntimeLibcallsInfo &Info,
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bool FiniteOnlyFuncs = false) {
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Info.setLibcallImpl(RTLIB::REM_F128, RTLIB::fmodf128);
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Info.setLibcallImpl(RTLIB::FMA_F128, RTLIB::fmaf128);
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Info.setLibcallImpl(RTLIB::SQRT_F128, RTLIB::sqrtf128);
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Info.setLibcallImpl(RTLIB::CBRT_F128, RTLIB::cbrtf128);
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Info.setLibcallImpl(RTLIB::LOG_F128, RTLIB::logf128);
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Info.setLibcallImpl(RTLIB::LOG2_F128, RTLIB::log2f128);
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Info.setLibcallImpl(RTLIB::LOG10_F128, RTLIB::log10f128);
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Info.setLibcallImpl(RTLIB::EXP_F128, RTLIB::expf128);
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Info.setLibcallImpl(RTLIB::EXP2_F128, RTLIB::exp2f128);
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Info.setLibcallImpl(RTLIB::EXP10_F128, RTLIB::exp10f128);
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Info.setLibcallImpl(RTLIB::SIN_F128, RTLIB::sinf128);
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Info.setLibcallImpl(RTLIB::COS_F128, RTLIB::cosf128);
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Info.setLibcallImpl(RTLIB::TAN_F128, RTLIB::tanf128);
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Info.setLibcallImpl(RTLIB::SINCOS_F128, RTLIB::sincosf128);
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Info.setLibcallImpl(RTLIB::ASIN_F128, RTLIB::asinf128);
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Info.setLibcallImpl(RTLIB::ACOS_F128, RTLIB::acosf128);
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Info.setLibcallImpl(RTLIB::ATAN_F128, RTLIB::atanf128);
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Info.setLibcallImpl(RTLIB::ATAN2_F128, RTLIB::atan2f128);
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Info.setLibcallImpl(RTLIB::SINH_F128, RTLIB::sinhf128);
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Info.setLibcallImpl(RTLIB::COSH_F128, RTLIB::coshf128);
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Info.setLibcallImpl(RTLIB::TANH_F128, RTLIB::tanhf128);
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Info.setLibcallImpl(RTLIB::POW_F128, RTLIB::powf128);
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Info.setLibcallImpl(RTLIB::CEIL_F128, RTLIB::ceilf128);
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Info.setLibcallImpl(RTLIB::TRUNC_F128, RTLIB::truncf128);
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Info.setLibcallImpl(RTLIB::RINT_F128, RTLIB::rintf128);
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Info.setLibcallImpl(RTLIB::NEARBYINT_F128, RTLIB::nearbyintf128);
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Info.setLibcallImpl(RTLIB::ROUND_F128, RTLIB::roundf128);
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Info.setLibcallImpl(RTLIB::ROUNDEVEN_F128, RTLIB::roundevenf128);
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Info.setLibcallImpl(RTLIB::FLOOR_F128, RTLIB::floorf128);
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Info.setLibcallImpl(RTLIB::COPYSIGN_F128, RTLIB::copysignf128);
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Info.setLibcallImpl(RTLIB::FMIN_F128, RTLIB::fminf128);
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Info.setLibcallImpl(RTLIB::FMAX_F128, RTLIB::fmaxf128);
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Info.setLibcallImpl(RTLIB::FMINIMUM_F128, RTLIB::fminimumf128);
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Info.setLibcallImpl(RTLIB::FMAXIMUM_F128, RTLIB::fmaximumf128);
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Info.setLibcallImpl(RTLIB::FMINIMUM_NUM_F128, RTLIB::fminimum_numf128);
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Info.setLibcallImpl(RTLIB::FMAXIMUM_NUM_F128, RTLIB::fmaximum_numf128);
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Info.setLibcallImpl(RTLIB::LROUND_F128, RTLIB::lroundf128);
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Info.setLibcallImpl(RTLIB::LLROUND_F128, RTLIB::llroundf128);
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Info.setLibcallImpl(RTLIB::LRINT_F128, RTLIB::lrintf128);
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Info.setLibcallImpl(RTLIB::LLRINT_F128, RTLIB::llrintf128);
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Info.setLibcallImpl(RTLIB::LDEXP_F128, RTLIB::ldexpf128);
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Info.setLibcallImpl(RTLIB::FREXP_F128, RTLIB::frexpf128);
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Info.setLibcallImpl(RTLIB::MODF_F128, RTLIB::modff128);
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if (FiniteOnlyFuncs) {
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Info.setLibcallImpl(RTLIB::LOG_FINITE_F128, RTLIB::__logf128_finite);
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Info.setLibcallImpl(RTLIB::LOG2_FINITE_F128, RTLIB::__log2f128_finite);
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Info.setLibcallImpl(RTLIB::LOG10_FINITE_F128, RTLIB::__log10f128_finite);
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Info.setLibcallImpl(RTLIB::EXP_FINITE_F128, RTLIB::__expf128_finite);
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Info.setLibcallImpl(RTLIB::EXP2_FINITE_F128, RTLIB::__exp2f128_finite);
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Info.setLibcallImpl(RTLIB::POW_FINITE_F128, RTLIB::__powf128_finite);
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} else {
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Info.setLibcallImpl(RTLIB::LOG_FINITE_F128, RTLIB::Unsupported);
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Info.setLibcallImpl(RTLIB::LOG2_FINITE_F128, RTLIB::Unsupported);
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Info.setLibcallImpl(RTLIB::LOG10_FINITE_F128, RTLIB::Unsupported);
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Info.setLibcallImpl(RTLIB::EXP_FINITE_F128, RTLIB::Unsupported);
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Info.setLibcallImpl(RTLIB::EXP2_FINITE_F128, RTLIB::Unsupported);
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Info.setLibcallImpl(RTLIB::POW_FINITE_F128, RTLIB::Unsupported);
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}
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}
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void RTLIB::RuntimeLibcallsInfo::initDefaultLibCallImpls() {
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std::memcpy(LibcallImpls, DefaultLibcallImpls, sizeof(LibcallImpls));
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static_assert(sizeof(LibcallImpls) == sizeof(DefaultLibcallImpls),
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"libcall array size should match");
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}
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/// Set default libcall names. If a target wants to opt-out of a libcall it
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/// should be placed here.
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void RuntimeLibcallsInfo::initLibcalls(const Triple &TT,
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ExceptionHandling ExceptionModel,
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FloatABI::ABIType FloatABI,
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EABI EABIVersion, StringRef ABIName) {
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setTargetRuntimeLibcallSets(TT);
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// Use the f128 variants of math functions on x86
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if (TT.isX86() && TT.isGNUEnvironment())
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setLongDoubleIsF128Libm(*this, /*FiniteOnlyFuncs=*/true);
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if (TT.isX86() || TT.isVE() || TT.isARM() || TT.isThumb()) {
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if (ExceptionModel == ExceptionHandling::SjLj)
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setLibcallImpl(RTLIB::UNWIND_RESUME, RTLIB::_Unwind_SjLj_Resume);
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}
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// A few names are different on particular architectures or environments.
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if (TT.isOSDarwin()) {
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// For f16/f32 conversions, Darwin uses the standard naming scheme,
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// instead of the gnueabi-style __gnu_*_ieee.
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// FIXME: What about other targets?
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setLibcallImpl(RTLIB::FPEXT_F16_F32, RTLIB::__extendhfsf2);
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setLibcallImpl(RTLIB::FPROUND_F32_F16, RTLIB::__truncsfhf2);
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// Some darwins have an optimized __bzero/bzero function.
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if (TT.isX86()) {
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if (TT.isMacOSX() && !TT.isMacOSXVersionLT(10, 6))
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setLibcallImpl(RTLIB::BZERO, RTLIB::__bzero);
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}
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if (darwinHasSinCosStret(TT)) {
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setLibcallImpl(RTLIB::SINCOS_STRET_F32, RTLIB::__sincosf_stret);
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setLibcallImpl(RTLIB::SINCOS_STRET_F64, RTLIB::__sincos_stret);
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if (TT.isWatchABI()) {
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setLibcallImplCallingConv(RTLIB::__sincosf_stret,
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CallingConv::ARM_AAPCS_VFP);
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setLibcallImplCallingConv(RTLIB::__sincos_stret,
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CallingConv::ARM_AAPCS_VFP);
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}
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}
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if (darwinHasExp10(TT)) {
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setLibcallImpl(RTLIB::EXP10_F32, RTLIB::__exp10f);
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setLibcallImpl(RTLIB::EXP10_F64, RTLIB::__exp10);
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} else {
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setLibcallImpl(RTLIB::EXP10_F32, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::EXP10_F64, RTLIB::Unsupported);
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}
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}
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if (hasSinCos(TT)) {
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setLibcallImpl(RTLIB::SINCOS_F32, RTLIB::sincosf);
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setLibcallImpl(RTLIB::SINCOS_F64, RTLIB::sincos);
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setLibcallImpl(RTLIB::SINCOS_F80, RTLIB::sincos_f80);
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setLibcallImpl(RTLIB::SINCOS_F128, RTLIB::sincos_f128);
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setLibcallImpl(RTLIB::SINCOS_PPCF128, RTLIB::sincos_ppcf128);
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}
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if (TT.isPS()) {
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setLibcallImpl(RTLIB::SINCOS_F32, RTLIB::sincosf);
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setLibcallImpl(RTLIB::SINCOS_F64, RTLIB::sincos);
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}
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if (TT.isOSOpenBSD()) {
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setLibcallImpl(RTLIB::STACKPROTECTOR_CHECK_FAIL, RTLIB::Unsupported);
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}
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if (TT.isOSWindows() && !TT.isOSCygMing()) {
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setLibcallImpl(RTLIB::LDEXP_F32, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::LDEXP_F80, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::LDEXP_F128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::LDEXP_PPCF128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::FREXP_F32, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::FREXP_F80, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::FREXP_F128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::FREXP_PPCF128, RTLIB::Unsupported);
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}
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if (TT.isOSMSVCRT()) {
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// MSVCRT doesn't have powi; fall back to pow
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setLibcallImpl(RTLIB::POWI_F32, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::POWI_F64, RTLIB::Unsupported);
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}
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// Setup Windows compiler runtime calls.
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if (TT.getArch() == Triple::x86 &&
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(TT.isWindowsMSVCEnvironment() || TT.isWindowsItaniumEnvironment())) {
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static const struct {
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const RTLIB::Libcall Op;
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const RTLIB::LibcallImpl Impl;
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const CallingConv::ID CC;
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} LibraryCalls[] = {
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{RTLIB::SDIV_I64, RTLIB::_alldiv, CallingConv::X86_StdCall},
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{RTLIB::UDIV_I64, RTLIB::_aulldiv, CallingConv::X86_StdCall},
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{RTLIB::SREM_I64, RTLIB::_allrem, CallingConv::X86_StdCall},
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{RTLIB::UREM_I64, RTLIB::_aullrem, CallingConv::X86_StdCall},
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{RTLIB::MUL_I64, RTLIB::_allmul, CallingConv::X86_StdCall},
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};
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for (const auto &LC : LibraryCalls) {
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setLibcallImpl(LC.Op, LC.Impl);
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setLibcallImplCallingConv(LC.Impl, LC.CC);
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}
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}
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if (TT.isARM() || TT.isThumb())
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setARMLibcallNames(*this, TT, FloatABI, EABIVersion);
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if (!TT.isWasm()) {
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// These libcalls are only available in compiler-rt, not libgcc.
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if (TT.isArch32Bit()) {
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setLibcallImpl(RTLIB::SHL_I128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::SRL_I128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::SRA_I128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::MUL_I128, RTLIB::Unsupported);
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setLibcallImpl(RTLIB::MULO_I64, RTLIB::Unsupported);
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}
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setLibcallImpl(RTLIB::MULO_I128, RTLIB::Unsupported);
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}
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if (TT.getArch() == Triple::ArchType::hexagon) {
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setLibcallImpl(RTLIB::SDIV_I32, RTLIB::__hexagon_divsi3);
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setLibcallImpl(RTLIB::SDIV_I64, RTLIB::__hexagon_divdi3);
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setLibcallImpl(RTLIB::UDIV_I32, RTLIB::__hexagon_udivsi3);
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setLibcallImpl(RTLIB::UDIV_I64, RTLIB::__hexagon_udivdi3);
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setLibcallImpl(RTLIB::SREM_I32, RTLIB::__hexagon_modsi3);
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setLibcallImpl(RTLIB::SREM_I64, RTLIB::__hexagon_moddi3);
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setLibcallImpl(RTLIB::UREM_I32, RTLIB::__hexagon_umodsi3);
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setLibcallImpl(RTLIB::UREM_I64, RTLIB::__hexagon_umoddi3);
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const bool FastMath = HexagonEnableFastMathRuntimeCalls;
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// This is the only fast library function for sqrtd.
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if (FastMath)
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setLibcallImpl(RTLIB::SQRT_F64, RTLIB::__hexagon_fast2_sqrtdf2);
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// Prefix is: nothing for "slow-math",
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// "fast2_" for V5+ fast-math double-precision
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// (actually, keep fast-math and fast-math2 separate for now)
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if (FastMath) {
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setLibcallImpl(RTLIB::ADD_F64, RTLIB::__hexagon_fast_adddf3);
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setLibcallImpl(RTLIB::SUB_F64, RTLIB::__hexagon_fast_subdf3);
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setLibcallImpl(RTLIB::MUL_F64, RTLIB::__hexagon_fast_muldf3);
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setLibcallImpl(RTLIB::DIV_F64, RTLIB::__hexagon_fast_divdf3);
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setLibcallImpl(RTLIB::DIV_F32, RTLIB::__hexagon_fast_divsf3);
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} else {
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setLibcallImpl(RTLIB::ADD_F64, RTLIB::__hexagon_adddf3);
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setLibcallImpl(RTLIB::SUB_F64, RTLIB::__hexagon_subdf3);
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setLibcallImpl(RTLIB::MUL_F64, RTLIB::__hexagon_muldf3);
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setLibcallImpl(RTLIB::DIV_F64, RTLIB::__hexagon_divdf3);
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setLibcallImpl(RTLIB::DIV_F32, RTLIB::__hexagon_divsf3);
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}
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if (FastMath)
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setLibcallImpl(RTLIB::SQRT_F32, RTLIB::__hexagon_fast2_sqrtf);
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else
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setLibcallImpl(RTLIB::SQRT_F32, RTLIB::__hexagon_sqrtf);
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setLibcallImpl(
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RTLIB::HEXAGON_MEMCPY_LIKELY_ALIGNED_MIN32BYTES_MULT8BYTES,
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RTLIB::__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes);
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}
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if (TT.getArch() == Triple::ArchType::msp430) {
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setLibcallImplCallingConv(RTLIB::__mspabi_mpyll,
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CallingConv::MSP430_BUILTIN);
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}
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}
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bool RuntimeLibcallsInfo::darwinHasExp10(const Triple &TT) {
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switch (TT.getOS()) {
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case Triple::MacOSX:
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return !TT.isMacOSXVersionLT(10, 9);
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case Triple::IOS:
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return !TT.isOSVersionLT(7, 0);
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case Triple::DriverKit:
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case Triple::TvOS:
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case Triple::WatchOS:
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case Triple::XROS:
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case Triple::BridgeOS:
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return true;
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default:
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return false;
|
|
}
|
|
}
|