new is not a valid default anywhere, so make this pure virtual

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22542 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineCodeEmitter.h

@@ -94,11 +94,8 @@ public:
   //
   virtual uint64_t getConstantPoolEntryAddress(unsigned Index) = 0;
 
-  // allocateGlobal - Allocate some space for a global variable.  This is
-  // used by the JIT to allocate space in the global variable region.
-  virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment) {
-    return new unsigned char[(size_t)size];
-  }
+  // allocateGlobal - Allocate some space for a global variable.
+  virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment) = 0;
 
   /// createDebugEmitter - Return a dynamically allocated machine
   /// code emitter, which just prints the opcodes and fields out the cout.  This

lib/CodeGen/ELFWriter.cpp

@@ -85,6 +85,11 @@ namespace llvm {
       return 0;
     }
 
+    virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment) {
+      assert(0 && "Globals not implemented yet!");
+      return 0;
+    }
+
     /// JIT SPECIFIC FUNCTIONS - DO NOT IMPLEMENT THESE HERE!
     void startFunctionStub(unsigned StubSize) {
       assert(0 && "JIT specific function called!");

lib/CodeGen/MachineCodeEmitter.cpp

@@ -51,6 +51,9 @@ namespace {
       std::cout << "<relocation> ";
     }
 
+    virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment)
+    { return 0; }
+
     uint64_t getConstantPoolEntryAddress(unsigned Num) { return 0; }
     uint64_t getCurrentPCValue() { return 0; }
     uint64_t getCurrentPCOffset() { return 0; }
@@ -142,6 +145,10 @@ namespace {
     uint64_t getConstantPoolEntryAddress(unsigned Num) {
       return MCE.getConstantPoolEntryAddress(Num);
     }
+
+    virtual unsigned char* allocateGlobal(unsigned size, unsigned alignment)
+    { return MCE.allocateGlobal(size, alignment); }
+
     uint64_t getCurrentPCValue() {
       return MCE.getCurrentPCValue();
     }