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author | Reid Kleckner <reid@kleckner.net> | 2009-07-23 01:40:54 +0000 |
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committer | Reid Kleckner <reid@kleckner.net> | 2009-07-23 01:40:54 +0000 |
commit | 4bf370698a456bcc96d26184785eb4f5fab396f2 (patch) | |
tree | 30f156c6f9fbe2faa7faf0dbbf047dd053dd1d23 /include/llvm/ExecutionEngine/JITMemoryManager.h | |
parent | 54e650f2c7bfcaec159ae41b2d79ce4a9a45edf8 (diff) | |
download | llvm-4bf370698a456bcc96d26184785eb4f5fab396f2.tar.gz llvm-4bf370698a456bcc96d26184785eb4f5fab396f2.tar.bz2 llvm-4bf370698a456bcc96d26184785eb4f5fab396f2.tar.xz |
Reverting r76825 and r76828, since they caused clang runtime errors and some build failure involving memset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76838 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/ExecutionEngine/JITMemoryManager.h')
-rw-r--r-- | include/llvm/ExecutionEngine/JITMemoryManager.h | 69 |
1 files changed, 9 insertions, 60 deletions
diff --git a/include/llvm/ExecutionEngine/JITMemoryManager.h b/include/llvm/ExecutionEngine/JITMemoryManager.h index 4539011571..02ec1c3a50 100644 --- a/include/llvm/ExecutionEngine/JITMemoryManager.h +++ b/include/llvm/ExecutionEngine/JITMemoryManager.h @@ -15,12 +15,9 @@ #define LLVM_EXECUTION_ENGINE_JIT_MEMMANAGER_H #include "llvm/Support/DataTypes.h" -#include <string> namespace llvm { - class Function; - class GlobalValue; /// JITMemoryManager - This interface is used by the JIT to allocate and manage /// memory for the code generated by the JIT. This can be reimplemented by @@ -91,19 +88,16 @@ public: //===--------------------------------------------------------------------===// // Main Allocation Functions //===--------------------------------------------------------------------===// - - /// startFunctionBody - When we start JITing a function, the JIT calls this + + /// startFunctionBody - When we start JITing a function, the JIT calls this /// method to allocate a block of free RWX memory, which returns a pointer to - /// it. If the JIT wants to request a block of memory of at least a certain - /// size, it passes that value as ActualSize, and this method returns a block - /// with at least that much space. If the JIT doesn't know ahead of time how - /// much space it will need to emit the function, it passes 0 for the - /// ActualSize. In either case, this method is required to pass back the size - /// of the allocated block through ActualSize. The JIT will be careful to - /// not write more than the returned ActualSize bytes of memory. - virtual uint8_t *startFunctionBody(const Function *F, + /// it. The JIT doesn't know ahead of time how much space it will need to + /// emit the function, so it doesn't pass in the size. Instead, this method + /// is required to pass back a "valid size". The JIT will be careful to not + /// write more than the returned ActualSize bytes of memory. + virtual uint8_t *startFunctionBody(const Function *F, uintptr_t &ActualSize) = 0; - + /// allocateStub - This method is called by the JIT to allocate space for a /// function stub (used to handle limited branch displacements) while it is /// JIT compiling a function. For example, if foo calls bar, and if bar @@ -124,12 +118,10 @@ public: virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart, uint8_t *FunctionEnd) = 0; - /// allocateSpace - Allocate a memory block of the given size. This method - /// cannot be called between calls to startFunctionBody and endFunctionBody. + /// allocateSpace - Allocate a memory block of the given size. virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) = 0; /// allocateGlobal - Allocate memory for a global. - /// virtual uint8_t *allocateGlobal(uintptr_t Size, unsigned Alignment) = 0; /// deallocateMemForFunction - Free JIT memory for the specified function. @@ -145,49 +137,6 @@ public: /// the exception table. virtual void endExceptionTable(const Function *F, uint8_t *TableStart, uint8_t *TableEnd, uint8_t* FrameRegister) = 0; - - /// CheckInvariants - For testing only. Return true if all internal - /// invariants are preserved, or return false and set ErrorStr to a helpful - /// error message. - virtual bool CheckInvariants(std::string &ErrorStr) { - return true; - } - - /// GetDefaultCodeSlabSize - For testing only. Returns DefaultCodeSlabSize - /// from DefaultJITMemoryManager. - virtual size_t GetDefaultCodeSlabSize() { - return 0; - } - - /// GetDefaultDataSlabSize - For testing only. Returns DefaultCodeSlabSize - /// from DefaultJITMemoryManager. - virtual size_t GetDefaultDataSlabSize() { - return 0; - } - - /// GetDefaultStubSlabSize - For testing only. Returns DefaultCodeSlabSize - /// from DefaultJITMemoryManager. - virtual size_t GetDefaultStubSlabSize() { - return 0; - } - - /// GetNumCodeSlabs - For testing only. Returns the number of MemoryBlocks - /// allocated for code. - virtual unsigned GetNumCodeSlabs() { - return 0; - } - - /// GetNumDataSlabs - For testing only. Returns the number of MemoryBlocks - /// allocated for data. - virtual unsigned GetNumDataSlabs() { - return 0; - } - - /// GetNumStubSlabs - For testing only. Returns the number of MemoryBlocks - /// allocated for function stubs. - virtual unsigned GetNumStubSlabs() { - return 0; - } }; } // end namespace llvm. |