mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-18 12:29:27 +00:00
b3d7299694
http://llvm.org/bugs/show_bug.cgi?id=2751 Abicall was enabled even when static code model was provided in the command line. The correct behavior is to disable abicall when static is specified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56228 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
//===- MipsSubtarget.cpp - Mips Subtarget Information -----------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the Mips specific subclass of TargetSubtarget.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MipsSubtarget.h"
|
|
#include "Mips.h"
|
|
#include "MipsGenSubtarget.inc"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
using namespace llvm;
|
|
|
|
static cl::opt<bool>
|
|
NotABICall("disable-mips-abicall", cl::Hidden,
|
|
cl::desc("Disable code for SVR4-style dynamic objects"));
|
|
static cl::opt<bool>
|
|
AbsoluteCall("enable-mips-absolute-call", cl::Hidden,
|
|
cl::desc("Enable absolute call within abicall"));
|
|
static cl::opt<unsigned>
|
|
SSThreshold("mips-ssection-threshold", cl::Hidden,
|
|
cl::desc("Small data and bss section threshold size (default=8)"),
|
|
cl::init(8));
|
|
|
|
MipsSubtarget::MipsSubtarget(const TargetMachine &TM, const Module &M,
|
|
const std::string &FS, bool little) :
|
|
MipsArchVersion(Mips1), MipsABI(O32), IsLittle(little), IsSingleFloat(false),
|
|
IsFP64bit(false), IsGP64bit(false), HasVFPU(false), HasABICall(true),
|
|
HasAbsoluteCall(false), IsLinux(true), HasSEInReg(false), HasCondMov(false),
|
|
HasMulDivAdd(false), HasMinMax(false), HasSwap(false), HasBitCount(false)
|
|
{
|
|
std::string CPU = "mips1";
|
|
|
|
// Parse features string.
|
|
ParseSubtargetFeatures(FS, CPU);
|
|
const std::string& TT = M.getTargetTriple();
|
|
|
|
// Small section size threshold
|
|
SSectionThreshold = SSThreshold;
|
|
|
|
// Is the target system Linux ?
|
|
if (TT.find("linux") == std::string::npos)
|
|
IsLinux = false;
|
|
|
|
// When only the target triple is specified and is
|
|
// a allegrex target, set the features. We also match
|
|
// big and little endian allegrex cores (dont really
|
|
// know if a big one exists)
|
|
if (TT.find("mipsallegrex") != std::string::npos ||
|
|
TT.find("psp") != std::string::npos) {
|
|
MipsABI = EABI;
|
|
IsSingleFloat = true;
|
|
MipsArchVersion = Mips2;
|
|
HasVFPU = true; // Enables Allegrex Vector FPU (not supported yet)
|
|
HasSEInReg = true;
|
|
HasBitCount = true;
|
|
HasSwap = true;
|
|
HasCondMov = true;
|
|
}
|
|
|
|
// Abicall is the default for O32 ABI, but is disabled within EABI and in
|
|
// static code.
|
|
if (NotABICall || isABI_EABI() || (TM.getRelocationModel() == Reloc::Static))
|
|
HasABICall = false;
|
|
|
|
// TODO: disable when handling 64 bit symbols in the future.
|
|
if (HasABICall && AbsoluteCall)
|
|
HasAbsoluteCall = true;
|
|
}
|