695c81e8a6
According to the [[ https://loongson.github.io/LoongArch-Documentation/LoongArch-toolchain-conventions-EN.html | LoongArch Toolchain Conventions ]] it is possible to specify the ABI modifier (the "D" part of "LP64D") via the environment field in the target triple. This is needed for proper support for Debian-style multiarch tuples as well, so add triple awareness to `LoongArchSubtarget` via addition of `LoongArchABI::computeTargetABI`. Let the explicit `--target-abi` argument intuitively take precedence over the triple-implied ABI. Reviewed By: SixWeining Differential Revision: https://reviews.llvm.org/D142685
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
//===-- LoongArchSubtarget.cpp - LoongArch Subtarget Information -*- 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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//
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// This file implements the LoongArch specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#include "LoongArchSubtarget.h"
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#include "LoongArchFrameLowering.h"
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#include "MCTargetDesc/LoongArchBaseInfo.h"
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using namespace llvm;
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#define DEBUG_TYPE "loongarch-subtarget"
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#define GET_SUBTARGETINFO_TARGET_DESC
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#define GET_SUBTARGETINFO_CTOR
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#include "LoongArchGenSubtargetInfo.inc"
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void LoongArchSubtarget::anchor() {}
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LoongArchSubtarget &LoongArchSubtarget::initializeSubtargetDependencies(
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const Triple &TT, StringRef CPU, StringRef TuneCPU, StringRef FS,
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StringRef ABIName) {
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bool Is64Bit = TT.isArch64Bit();
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if (CPU.empty() || CPU == "generic")
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CPU = Is64Bit ? "generic-la64" : "generic-la32";
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if (TuneCPU.empty())
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TuneCPU = CPU;
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ParseSubtargetFeatures(CPU, TuneCPU, FS);
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if (Is64Bit) {
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GRLenVT = MVT::i64;
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GRLen = 64;
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}
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if (HasLA32 == HasLA64)
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report_fatal_error("Please use one feature of 32bit and 64bit.");
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if (Is64Bit && HasLA32)
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report_fatal_error("Feature 32bit should be used for loongarch32 target.");
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if (!Is64Bit && HasLA64)
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report_fatal_error("Feature 64bit should be used for loongarch64 target.");
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TargetABI = LoongArchABI::computeTargetABI(TT, ABIName);
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return *this;
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}
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LoongArchSubtarget::LoongArchSubtarget(const Triple &TT, StringRef CPU,
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StringRef TuneCPU, StringRef FS,
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StringRef ABIName,
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const TargetMachine &TM)
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: LoongArchGenSubtargetInfo(TT, CPU, TuneCPU, FS),
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FrameLowering(
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initializeSubtargetDependencies(TT, CPU, TuneCPU, FS, ABIName)),
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InstrInfo(*this), RegInfo(getHwMode()), TLInfo(TM, *this) {}
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