mirror of
https://github.com/opnsense/src.git
synced 2026-02-22 09:21:31 -05:00
f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//===-- SystemZSubtarget.cpp - SystemZ subtarget information --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "SystemZSubtarget.h"
|
|
#include "llvm/IR/GlobalValue.h"
|
|
#include "llvm/Support/Host.h"
|
|
#include "MCTargetDesc/SystemZMCTargetDesc.h"
|
|
|
|
#define GET_SUBTARGETINFO_TARGET_DESC
|
|
#define GET_SUBTARGETINFO_CTOR
|
|
#include "SystemZGenSubtargetInfo.inc"
|
|
|
|
using namespace llvm;
|
|
|
|
// Pin the vtabel to this file.
|
|
void SystemZSubtarget::anchor() {}
|
|
|
|
SystemZSubtarget::SystemZSubtarget(const std::string &TT,
|
|
const std::string &CPU,
|
|
const std::string &FS)
|
|
: SystemZGenSubtargetInfo(TT, CPU, FS), HasDistinctOps(false),
|
|
HasLoadStoreOnCond(false), HasHighWord(false), HasFPExtension(false),
|
|
TargetTriple(TT) {
|
|
std::string CPUName = CPU;
|
|
if (CPUName.empty())
|
|
CPUName = "generic";
|
|
#if defined(__linux__) && defined(__s390x__)
|
|
if (CPUName == "generic")
|
|
CPUName = sys::getHostCPUName();
|
|
#endif
|
|
|
|
// Parse features string.
|
|
ParseSubtargetFeatures(CPUName, FS);
|
|
}
|
|
|
|
// Return true if GV binds locally under reloc model RM.
|
|
static bool bindsLocally(const GlobalValue *GV, Reloc::Model RM) {
|
|
// For non-PIC, all symbols bind locally.
|
|
if (RM == Reloc::Static)
|
|
return true;
|
|
|
|
return GV->hasLocalLinkage() || !GV->hasDefaultVisibility();
|
|
}
|
|
|
|
bool SystemZSubtarget::isPC32DBLSymbol(const GlobalValue *GV,
|
|
Reloc::Model RM,
|
|
CodeModel::Model CM) const {
|
|
// PC32DBL accesses require the low bit to be clear. Note that a zero
|
|
// value selects the default alignment and is therefore OK.
|
|
if (GV->getAlignment() == 1)
|
|
return false;
|
|
|
|
// For the small model, all locally-binding symbols are in range.
|
|
if (CM == CodeModel::Small)
|
|
return bindsLocally(GV, RM);
|
|
|
|
// For Medium and above, assume that the symbol is not within the 4GB range.
|
|
// Taking the address of locally-defined text would be OK, but that
|
|
// case isn't easy to detect.
|
|
return false;
|
|
}
|