2 ;; Load up the native codegen.
3 (cffi:defcfun
("CLLLVM_LLVMInitializeNativeTarget" CLLLVM_LLVMInitializeNativeTarget
) :int
)
4 (cffi:defcfun
("CLLLVM_LLVMModuleProviderGetModule" CLLLVM_LLVMModuleProviderGetModule
) :pointer
5 (modprovider :pointer
))
6 (cffi:defcfun
("CLLLVM_LLVMParseAssemblyString" CLLLVM_LLVMParseAssemblyString
) :pointer
11 (CLLLVM_LLVMInitializeNativeTarget)
13 ;; A global context. Most of LLVM is only thread-safe within a single "context". There is an
14 ;; internal-to-LLVM C default global context, implicitly used by a number of functions like
15 ;; LLVM*Type (without InContext on the end), but I make a lisp-side global context here for clarity.
17 ;; Delete with LLVMContextDispose when done.
19 ;; ...FIXME...or not. For some reason making a custom context makes things fail to verify, stating
20 ;; that I've mixed contexts. Need to figure out if this is my fault or a bug in LLVM.
22 ;; So just use the standard global context
23 ;; (defvar *llvm-context* (LLVMContextCreate))
24 (defvar *llvm-context
* (LLVMGetGlobalContext))
26 ;; Top-level LLVM module for running the JIT in. Other modules can be made for codegen-to-disk, but
27 ;; only a single module for JIT execution can exist in the process.
28 (defvar *jit-module
* (LLVMModuleCreateWithName "jit-module"))
30 ;; Module provider...dunno what the purpose of this is, it wraps the module
31 ;; Delete with LLVMDisposeModuleProvider; don't delete the wrapped module
32 (defvar *jit-module-provider
* (LLVMCreateModuleProviderForExistingModule *jit-module
*))
34 ;; Create the JIT compiler, optimization level 2 (whatever that means). This call fails if you run
35 ;; it twice in a process. (which is why we can have only one module for JIT code)
36 (defvar *jit-execution-engine
* (LLVMCreateJITCompiler *jit-module-provider
* 2))
38 ;; Optimization passes. Cleanup with LLVMDisposePassManager.
39 (defvar *jit-pass-manager
* (LLVMCreateFunctionPassManager *jit-module-provider
*))
40 (let ((pass *jit-pass-manager
*))
41 (LLVMAddTargetData (LLVMGetExecutionEngineTargetData *jit-execution-engine
*) pass
)
42 (LLVMAddConstantPropagationPass pass
)
43 (LLVMAddInstructionCombiningPass pass
)
44 (LLVMAddPromoteMemoryToRegisterPass pass
)
46 (LLVMAddCFGSimplificationPass pass
))