It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 62 insertions, 0 deletions

diff --git a/utils/TableGen/SubtargetEmitter.h b/utils/TableGen/SubtargetEmitter.h
new file mode 100644
index 0000000000..69feeb2d0f
--- /dev/null
+++ b/utils/TableGen/SubtargetEmitter.h
@@ -0,0 +1,62 @@
+//===- SubtargetEmitter.h - Generate subtarget enumerations -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by James M. Laskey and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tablegen backend emits subtarget enumerations.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBTARGET_EMITTER_H
+#define SUBTARGET_EMITTER_H
+
+#include "TableGenBackend.h"
+#include "llvm/Target/TargetInstrItineraries.h"
+#include <vector>
+#include <map>
+#include <string>
+
+
+namespace llvm {
+
+class SubtargetEmitter : public TableGenBackend {
+  
+  RecordKeeper &Records;
+  std::string Target;
+  bool HasItineraries;
+  
+  void Enumeration(std::ostream &OS, const char *ClassName, bool isBits);
+  void FeatureKeyValues(std::ostream &OS);
+  void CPUKeyValues(std::ostream &OS);
+  unsigned CollectAllItinClasses(std::ostream &OS,
+                               std::map<std::string, unsigned> &ItinClassesMap);
+  void FormItineraryString(Record *ItinData, std::string &ItinString,
+                           unsigned &NStages);
+  void EmitStageData(std::ostream &OS, unsigned NItinClasses,
+                     std::map<std::string, unsigned> &ItinClassesMap,
+                     std::vector<std::vector<InstrItinerary> > &ProcList);
+  void EmitProcessorData(std::ostream &OS,
+                       std::vector<std::vector<InstrItinerary> > &ProcList);
+  void EmitProcessorLookup(std::ostream &OS);
+  void EmitData(std::ostream &OS);
+  void ParseFeaturesFunction(std::ostream &OS);
+  
+public:
+  SubtargetEmitter(RecordKeeper &R) : Records(R), HasItineraries(false) {}
+
+  // run - Output the subtarget enumerations, returning true on failure.
+  void run(std::ostream &o);
+
+};
+
+
+} // End llvm namespace
+
+#endif
+
+
+