vendor/llvm/llvm-r72732

1 files changed, 43 insertions, 0 deletions

diff --git a/lib/Target/Sparc/SparcSubtarget.cpp b/lib/Target/Sparc/SparcSubtarget.cpp
new file mode 100644
index 0000000000000..aaddbff073ad5
--- /dev/null
+++ b/lib/Target/Sparc/SparcSubtarget.cpp
@@ -0,0 +1,43 @@
+//===- SparcSubtarget.cpp - SPARC Subtarget Information -------------------===//
+//
+//                     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 SPARC specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#include "SparcSubtarget.h"
+#include "SparcGenSubtarget.inc"
+using namespace llvm;
+
+// FIXME: temporary.
+#include "llvm/Support/CommandLine.h"
+namespace {
+  cl::opt<bool> EnableV9("enable-sparc-v9-insts", cl::Hidden,
+                          cl::desc("Enable V9 instructions in the V8 target"));
+}
+
+SparcSubtarget::SparcSubtarget(const Module &M, const std::string &FS) {
+  // Set the default features.
+  IsV9 = false;
+  V8DeprecatedInsts = false;
+  IsVIS = false;
+  
+  // Determine default and user specified characteristics
+  std::string CPU = "generic";
+
+  // FIXME: autodetect host here!
+  CPU = "v9";   // What is a good way to detect V9?
+  
+  // Parse features string.
+  ParseSubtargetFeatures(FS, CPU);
+
+  // Unless explicitly enabled, disable the V9 instructions.
+  if (!EnableV9)
+    IsV9 = false;
+}