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Layer the memory manager between the JIT and the runtime Dyld.

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The JITMemory manager references LLVM IR constructs directly, while the
runtime Dyld works at a lower level and can handle objects which may not
originate from LLVM IR. Introduce a new layer for the memory manager to
handle the interface between them. For the MCJIT, this layer will be almost
entirely simply a call-through w/ translation between the IR objects and
symbol names.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128851 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2011-04-04 23:04:39 +00:00
parent c15a91dfc8
commit fcbe5b7193
5 changed files with 64 additions and 25 deletions
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11
lib/ExecutionEngine/MCJIT/MCJIT.cpp
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@@ -8,6 +8,7 @@
//===----------------------------------------------------------------------===//
#include "MCJIT.h"
#include "MCJITMemoryManager.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/ExecutionEngine/GenericValue.h"
@@ -57,7 +58,8 @@ ExecutionEngine *MCJIT::createJIT(Module *M,
// If the target supports JIT code generation, create the JIT.
if (TargetJITInfo *TJ = TM->getJITInfo())
return new MCJIT(M, TM, *TJ, JMM, OptLevel, GVsWithCode);
return new MCJIT(M, TM, *TJ, new MCJITMemoryManager(JMM), OptLevel,
GVsWithCode);
if (ErrorStr)
*ErrorStr = "target does not support JIT code generation";
@@ -65,9 +67,9 @@ ExecutionEngine *MCJIT::createJIT(Module *M,
}
MCJIT::MCJIT(Module *m, TargetMachine *tm, TargetJITInfo &tji,
JITMemoryManager *JMM, CodeGenOpt::Level OptLevel,
RTDyldMemoryManager *MM, CodeGenOpt::Level OptLevel,
bool AllocateGVsWithCode)
: ExecutionEngine(m), TM(tm), M(m), OS(Buffer), Dyld(JMM) {
: ExecutionEngine(m), TM(tm), MemMgr(MM), M(m), OS(Buffer), Dyld(MM) {
PM.add(new TargetData(*TM->getTargetData()));
@@ -94,6 +96,7 @@ MCJIT::MCJIT(Module *m, TargetMachine *tm, TargetJITInfo &tji,
}
MCJIT::~MCJIT() {
delete MemMgr;
}
void *MCJIT::getPointerToBasicBlock(BasicBlock *BB) {
@@ -110,7 +113,7 @@ void *MCJIT::getPointerToFunction(Function *F) {
}
Twine Name = TM->getMCAsmInfo()->getGlobalPrefix() + F->getName();
return Dyld.getSymbolAddress(Name.str());
return (void*)Dyld.getSymbolAddress(Name.str());
}
void *MCJIT::recompileAndRelinkFunction(Function *F) {