1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-22 12:33:33 +02:00
llvm-mirror/lib/Target/AMDGPU/AMDGPUTargetObjectFile.cpp
Yaxun Liu da52f0e643 [AMDGPU] Get address space mapping by target triple environment
As we introduced target triple environment amdgiz and amdgizcl, the address
space values are no longer enums. We have to decide the value by target triple.

The basic idea is to use struct AMDGPUAS to represent address space values.
For address space values which are not depend on target triple, use static
const members, so that they don't occupy extra memory space and is equivalent
to a compile time constant.

Since the struct is lightweight and cheap, it can be created on the fly at
the point of usage. Or it can be added as member to a pass and created at
the beginning of the run* function.

Differential Revision: https://reviews.llvm.org/D31284

llvm-svn: 298846
2017-03-27 14:04:01 +00:00

33 lines
1.2 KiB
C++

//===-- AMDGPUHSATargetObjectFile.cpp - AMDGPU Object Files ---------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "AMDGPUTargetMachine.h"
#include "AMDGPUTargetObjectFile.h"
#include "AMDGPU.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/Support/ELF.h"
#include "Utils/AMDGPUBaseInfo.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// Generic Object File
//===----------------------------------------------------------------------===//
MCSection *AMDGPUTargetObjectFile::SelectSectionForGlobal(
const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const {
auto AS = static_cast<const AMDGPUTargetMachine*>(&TM)->getAMDGPUAS();
if (Kind.isReadOnly() && AMDGPU::isReadOnlySegment(GO, AS) &&
AMDGPU::shouldEmitConstantsToTextSection(TM.getTargetTriple()))
return TextSection;
return TargetLoweringObjectFileELF::SelectSectionForGlobal(GO, Kind, TM);
}