misched: handle on-the-fly regpressure queries better for 2-addr

[oota-llvm.git] / include / llvm / CodeGen / JITCodeEmitter.h

diff --git a/include/llvm/CodeGen/JITCodeEmitter.h b/include/llvm/CodeGen/JITCodeEmitter.h
index 5da4961dbd39674ed2bc2b0ce0ad8854032b3ee5..89f00e91f78ecf4aefd7539e4e90e0794c0abf65 100644 (file)
--- a/include/llvm/CodeGen/JITCodeEmitter.h
+++ b/include/llvm/CodeGen/JITCodeEmitter.h
@@ -18,11 +18,10 @@
 #define LLVM_CODEGEN_JITCODEEMITTER_H
 
 #include <string>
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/CodeGen/MachineCodeEmitter.h"
-
-using namespace std;
+#include "llvm/ADT/DenseMap.h"
 
 namespace llvm {
 
@@ -37,7 +36,7 @@ class GlobalValue;
 class Function;
   
 /// JITCodeEmitter - This class defines two sorts of methods: those for
-/// emitting the actual bytes of machine code, and those for emitting auxillary
+/// emitting the actual bytes of machine code, and those for emitting auxiliary
 /// structures, such as jump tables, relocations, etc.
 ///
 /// Emission of machine code is complicated by the fact that we don't (in
@@ -52,6 +51,7 @@ class Function;
 /// occurred, more memory is allocated, and we reemit the code into it.
 /// 
 class JITCodeEmitter : public MachineCodeEmitter {
+  virtual void anchor();
 public:
   virtual ~JITCodeEmitter() {}
 
@@ -173,13 +173,20 @@ public:
 
   /// emitULEB128Bytes - This callback is invoked when a ULEB128 needs to be
   /// written to the output stream.
-  void emitULEB128Bytes(uint64_t Value) {
+  void emitULEB128Bytes(uint64_t Value, unsigned PadTo = 0) {
     do {
       uint8_t Byte = Value & 0x7f;
       Value >>= 7;
-      if (Value) Byte |= 0x80;
+      if (Value || PadTo != 0) Byte |= 0x80;
       emitByte(Byte);
     } while (Value);
+
+    if (PadTo) {
+      do {
+        uint8_t Byte = (PadTo > 1) ? 0x80 : 0x0;
+        emitByte(Byte);
+      } while (--PadTo);
+    }
   }
   
   /// emitSLEB128Bytes - This callback is invoked when a SLEB128 needs to be
@@ -324,6 +331,10 @@ public:
   /// Specifies the MachineModuleInfo object. This is used for exception handling
   /// purposes.
   virtual void setModuleInfo(MachineModuleInfo* Info) = 0;
+
+  /// getLabelLocations - Return the label locations map of the label IDs to
+  /// their address.
+  virtual DenseMap<MCSymbol*, uintptr_t> *getLabelLocations() { return 0; }
 };
 
 } // End llvm namespace