1 files changed, 51 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/MBlaze/MBlazeSubtarget.cpp b/contrib/llvm/lib/Target/MBlaze/MBlazeSubtarget.cpp
new file mode 100644
index 0000000..a80744a
--- /dev/null
+++ b/contrib/llvm/lib/Target/MBlaze/MBlazeSubtarget.cpp
@@ -0,0 +1,51 @@
+//===- MBlazeSubtarget.cpp - MBlaze 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 MBlaze specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MBlazeSubtarget.h"
+#include "MBlaze.h"
+#include "MBlazeRegisterInfo.h"
+#include "MBlazeGenSubtarget.inc"
+#include "llvm/Support/CommandLine.h"
+using namespace llvm;
+
+MBlazeSubtarget::MBlazeSubtarget(const std::string &TT, const std::string &FS):
+  HasBarrel(false), HasDiv(false), HasMul(false), HasPatCmp(false),
+  HasFPU(false), HasMul64(false), HasSqrt(false)
+{
+  // Parse features string.
+  std::string CPU = "mblaze";
+  CPU = ParseSubtargetFeatures(FS, CPU);
+
+  // Only use instruction scheduling if the selected CPU has an instruction
+  // itinerary (the default CPU is the only one that doesn't).
+  HasItin = CPU != "mblaze";
+  DEBUG(dbgs() << "CPU " << CPU << "(" << HasItin << ")\n");
+
+  // Compute the issue width of the MBlaze itineraries
+  computeIssueWidth();
+}
+
+void MBlazeSubtarget::computeIssueWidth() {
+  InstrItins.IssueWidth = 1;
+}
+
+bool MBlazeSubtarget::
+enablePostRAScheduler(CodeGenOpt::Level OptLevel,
+                      TargetSubtarget::AntiDepBreakMode& Mode,
+                      RegClassVector& CriticalPathRCs) const {
+  Mode = TargetSubtarget::ANTIDEP_CRITICAL;
+  CriticalPathRCs.clear();
+  CriticalPathRCs.push_back(&MBlaze::GPRRegClass);
+  return HasItin && OptLevel >= CodeGenOpt::Default;
+}
+