Vendor import of llvm trunk r154661:

http://llvm.org/svn/llvm-project/llvm/trunk@r154661

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/Target/Mips/MipsMachineFunction.cpp b/lib/Target/Mips/MipsMachineFunction.cpp
new file mode 100644
index 0000000..b00c62b
--- /dev/null
+++ b/lib/Target/Mips/MipsMachineFunction.cpp
@@ -0,0 +1,50 @@
+//===-- MipsMachineFunctionInfo.cpp - Private data used for Mips ----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MipsMachineFunction.h"
+#include "MipsInstrInfo.h"
+#include "MipsSubtarget.h"
+#include "MCTargetDesc/MipsBaseInfo.h"
+#include "llvm/Function.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/Support/CommandLine.h"
+
+using namespace llvm;
+
+static cl::opt<bool>
+FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
+                 cl::desc("Always use $gp as the global base register."));
+
+bool MipsFunctionInfo::globalBaseRegFixed() const {
+  return FixGlobalBaseReg;
+}
+
+bool MipsFunctionInfo::globalBaseRegSet() const {
+  return GlobalBaseReg;
+}
+
+unsigned MipsFunctionInfo::getGlobalBaseReg() {
+  // Return if it has already been initialized.
+  if (GlobalBaseReg)
+    return GlobalBaseReg;
+
+  const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
+
+  if (FixGlobalBaseReg) // $gp is the global base register.
+    return GlobalBaseReg = ST.isABI_N64() ? Mips::GP_64 : Mips::GP;
+
+  const TargetRegisterClass *RC;
+  RC = ST.isABI_N64() ?
+    Mips::CPU64RegsRegisterClass : Mips::CPURegsRegisterClass;
+
+  return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
+}
+
+void MipsFunctionInfo::anchor() { }