Main CellSPU backend files checked in. Intrinsics and autoconf files

remain.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44595 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 95 insertions, 0 deletions

diff --git a/lib/Target/CellSPU/SPUSubtarget.h b/lib/Target/CellSPU/SPUSubtarget.h
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+++ b/lib/Target/CellSPU/SPUSubtarget.h
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+//=====-- SPUSubtarget.h - Define Subtarget for the Cell SPU -----*- C++ -*--=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by a team from the Computer Systems Research
+// Department at The Aerospace Corporation.
+//
+// See README.txt for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the Cell SPU-specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef POWERPCSUBTARGET_H
+#define POWERPCSUBTARGET_H
+
+#include "llvm/Target/TargetInstrItineraries.h"
+#include "llvm/Target/TargetSubtarget.h"
+
+#include <string>
+
+namespace llvm {
+  class Module;
+  class GlobalValue;
+  class TargetMachine;
+
+  namespace SPU {
+    enum {
+      DEFAULT_PROC
+    };
+  }
+    
+  class SPUSubtarget : public TargetSubtarget {
+  protected:
+    const TargetMachine &TM;
+    
+    /// stackAlignment - The minimum alignment known to hold of the stack frame
+    /// on entry to the function and which must be maintained by every function.
+    unsigned StackAlignment;
+    
+    /// Selected instruction itineraries (one entry per itinerary class.)
+    InstrItineraryData InstrItins;
+
+    /// Which SPU processor (this isn't really used, but it's there to keep
+    /// the C compiler happy)
+    unsigned ProcDirective;
+
+    /// Use (assume) large memory -- effectively disables the LQA/STQA
+    /// instructions that assume 259K local store.
+    bool UseLargeMem;
+    
+  public:
+    /// This constructor initializes the data members to match that
+    /// of the specified module.
+    ///
+    SPUSubtarget(const TargetMachine &TM, const Module &M,
+                 const std::string &FS);
+    
+    /// ParseSubtargetFeatures - Parses features string setting specified 
+    /// subtarget options.  Definition of function is auto generated by tblgen.
+    void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
+    
+    /// SetJITMode - This is called to inform the subtarget info that we are
+    /// producing code for the JIT.
+    void SetJITMode();
+
+    /// getStackAlignment - Returns the minimum alignment known to hold of the
+    /// stack frame on entry to the function and which must be maintained by
+    /// every function for this subtarget.
+    unsigned getStackAlignment() const { return StackAlignment; }
+    
+    /// getInstrItins - Return the instruction itineraies based on subtarget 
+    /// selection.
+    const InstrItineraryData &getInstrItineraryData() const {
+      return InstrItins;
+    }
+
+    /// Use large memory addressing predicate
+    bool usingLargeMem() const {
+      return UseLargeMem;
+    }
+
+    /// getTargetDataString - Return the pointer size and type alignment
+    /// properties of this subtarget.
+    const char *getTargetDataString() const {
+      return "E-p:32:32:128-f64:64:128-f32:32:128-i64:32:128-i32:32:128"
+	     "-i16:16:128-i8:8:128-i1:8:128-a:0:128-v128:128:128"
+             "-s:128:128";
+    }
+  };
+} // End llvm namespace
+
+#endif