TargetSchedModel interface. To be implemented...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163934 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/CodeGen/TargetSchedule.cpp b/lib/CodeGen/TargetSchedule.cpp
new file mode 100644
index 0000000000..42effb415b
--- /dev/null
+++ b/lib/CodeGen/TargetSchedule.cpp
@@ -0,0 +1,32 @@
+//===-- llvm/Target/TargetSchedule.cpp - Sched Machine Model ----*- 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 a wrapper around MCSchedModel that allows the interface
+// to benefit from information currently only available in TargetInstrInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/TargetSchedule.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
+#include "llvm/Support/CommandLine.h"
+
+using namespace llvm;
+
+static cl::opt<bool> EnableSchedModel("schedmodel", cl::Hidden, cl::init(false),
+  cl::desc("Use TargetSchedModel for latency lookup"));
+
+void TargetSchedModel::init(const MCSchedModel &sm,
+                            const TargetSubtargetInfo *sti,
+                            const TargetInstrInfo *tii) {
+  SchedModel = sm;
+  STI = sti;
+  TII = tii;
+  STI->initInstrItins(InstrItins);
+}