//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Bruno Cardoso Lopes and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#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) :
- IsMipsIII(false)
+ 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 = "generic";
+ std::string CPU = "mips1";
+ MipsArchVersion = 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;
}