Alex Bradbury 7cb3cd34e8 [RISCV] Implement getExprForFDESymbol to ensure RISCV_32_PCREL is used for the FDE location
Follow binutils in using RISCV_32_PCREL for the FDE initial location. As
explained in the relevant binutils commit
<a6cbf936e3>,
the ADD/SUB pair of relocations is problematic in the presence of linker
relaxation.

This patch has the same end goal as D64715 but includes test changes and
avoids adding a new global VariantKind to MCExpr.h (preferring
RISCVMCExpr VKs like the rest of the RISC-V backend).

Differential Revision: https://reviews.llvm.org/D66419

llvm-svn: 369375
2019-08-20 12:32:31 +00:00

34 lines
1.0 KiB
C++

//===-- RISCVMCAsmInfo.h - RISCV Asm Info ----------------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the RISCVMCAsmInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCASMINFO_H
#define LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCASMINFO_H
#include "llvm/MC/MCAsmInfoELF.h"
namespace llvm {
class Triple;
class RISCVMCAsmInfo : public MCAsmInfoELF {
void anchor() override;
public:
explicit RISCVMCAsmInfo(const Triple &TargetTriple);
const MCExpr *getExprForFDESymbol(const MCSymbol *Sym, unsigned Encoding,
MCStreamer &Streamer) const override;
};
} // namespace llvm
#endif