commit 489393d7b92107cc3de17d8dbe7dd11ab7395fdc
author Jeffrey Yasskin <jyasskin@google.com> Wed Jul 08 21:59:57 2009 +0000
committer Jeffrey Yasskin <jyasskin@google.com> Wed Jul 08 21:59:57 2009 +0000
tree c71a1374a4b25820422f596ca8e686c01514596a
parent e41dec60fa1ad6a46ec46c848ae1a8f2f7497e12

Add an option to allocate JITed global data separately from code.  By
default, this option is not enabled to support clients who rely on
this behavior.

Fixes http://llvm.org/PR4483

A patch to allocate additional memory for globals after we run out is
forthcoming.

Patch by Reid Kleckner!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75059 91177308-0d34-0410-b5e6-96231b3b80d8

lib/ExecutionEngine/JIT/JIT.h

diff --git a/lib/ExecutionEngine/JIT/JIT.h b/lib/ExecutionEngine/JIT/JIT.h
index 66417a7..c992509 100644
--- a/lib/ExecutionEngine/JIT/JIT.h
+++ b/lib/ExecutionEngine/JIT/JIT.h
@@ -55,10 +55,16 @@
   JITCodeEmitter *JCE;     // JCE object
   std::vector<JITEventListener*> EventListeners;
 
+  /// AllocateGVsWithCode - Some applications require that global variables and
+  /// code be allocated into the same region of memory, in which case this flag
+  /// should be set to true.  Doing so breaks freeMachineCodeForFunction.
+  bool AllocateGVsWithCode;
+
   JITState *jitstate;
 
-  JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji, 
-      JITMemoryManager *JMM, CodeGenOpt::Level OptLevel);
+  JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji,
+      JITMemoryManager *JMM, CodeGenOpt::Level OptLevel,
+      bool AllocateGVsWithCode);
 public:
   ~JIT();
 
@@ -75,8 +81,9 @@
   ///
   static ExecutionEngine *create(ModuleProvider *MP, std::string *Err,
                                  CodeGenOpt::Level OptLevel =
-                                   CodeGenOpt::Default) {
-    return createJIT(MP, Err, 0, OptLevel);
+                                   CodeGenOpt::Default,
+                                 bool AllocateGVsWithCode = true) {
+    return createJIT(MP, Err, 0, OptLevel, AllocateGVsWithCode);
   }
 
   virtual void addModuleProvider(ModuleProvider *MP);
@@ -151,9 +158,11 @@
   /// getCodeEmitter - Return the code emitter this JIT is emitting into.
   JITCodeEmitter *getCodeEmitter() const { return JCE; }
   
-  static ExecutionEngine *createJIT(ModuleProvider *MP, std::string *Err,
+  static ExecutionEngine *createJIT(ModuleProvider *MP,
+                                    std::string *Err,
                                     JITMemoryManager *JMM,
-                                    CodeGenOpt::Level OptLevel);
+                                    CodeGenOpt::Level OptLevel,
+                                    bool AllocateGVsWithCode);
 
 
   // Run the JIT on F and return information about the generated code