search for: updateglobalmapping

Hello, I am using updateGlobalMapping to inform the JIT engine the address of some C helpers. Due to the nature of the analysis pass, there can be several calls to updateGlobalMapping with the same GlobalValue key and the same (or sometimes different) address. My problem is when the reverse mapping is enabled, the following fragment:...

..._dso_handle if it's declared in the module. You could module tools/lli/lli.cpp to add a global: char *dummy_dso_handle = 0; and tie it to __dso_handle via. if (GlobalVariable *DSO = Mod->getGlobalVariable("__dso_handle")) if (!DSO->hasInitializer()) EE->updateGlobalMapping(DSO, &dummy_dso_handle); somewhere in main(), say after disabling lazy compilation. Entirely untested though; we might need to give dummy_dso_handle a real value. Nick > tia > > On 5/21/2012 2:46 PM, Ashok Nalkund wrote: >> On 5/21/2012 11:15 AM, Nick Lewycky wrote: >>&...

...ant to check the ExecutionEngine::getPointerToGlobal method. You can just cast the void* to the appropriate pointer type, and write to it. If you really want to change the address of the GlobalValue (i.e. the mapping from GlobalValue to main memory address), you can use the addGlobalMapping or updateGlobalMapping methods, but this should only be done before JITting any function which uses the GlobalValue. Otherwise you have to call recompileAndRelinkFunction for each function that uses the GlobalValue. Cheers, Clemens

hello guys, recently, i successfully get and modify global variable by execution engine. the functions i used are listed here: int m=1; EE->updateGlobalMapping(p->M->getGlobalVariable("x",true),&m); EE->recompileAndRelinkFunction(EntryFn); x is the global variable in the module. but how to modify the local variable in the module? -- View this message in context: http://llvm.1065342.n5.nabble.com/how-to-get-and-modify-a-local-var...

hi Duncan Sands, i have tried the functions: GlobalValue * getNamedValue (StringRef Name) const GlobalVariable * getGlobalVariable (StringRef Name, bool AllowInternal=false) const GlobalVariable * getNamedGlobal (StringRef Name) const but i think these functions just return the ID or something else (not the Global Variable's main memory address, i am not sure) here is the thing. i

...clearAllGlobalMappings - Clear all global mappings and start over again > + /// use in dynamic compilation scenarios when you want to move globals > + void clearAllGlobalMappings() { > + GlobalAddressMap.clear(); > + GlobalAddressReverseMap.clear(); > + } > + > /// updateGlobalMapping - Replace an existing mapping for GV with a new > /// address. This updates both maps as required. > void updateGlobalMapping(const GlobalValue *GV, void *Addr) { > > ______________________________________________________________________ > ____________________________________...

Hi, here are some minor patches that for various reasons I've not submitted yet - I'm just trying to clear my list of differences before christmas... First of all the clear.patch file contains a patch that enables the JIT to drop all global mappings. I need this because when I have N threads I compile N different versions of my functions using different memory areas for global

...gt; > You could module tools/lli/lli.cpp to add a global: > > char *dummy_dso_handle = 0; > > and tie it to __dso_handle via. > > if (GlobalVariable *DSO = Mod->getGlobalVariable("__dso_handle")) > if (!DSO->hasInitializer()) > EE->updateGlobalMapping(DSO,&dummy_dso_handle); > > somewhere in main(), say after disabling lazy compilation. Entirely > untested though; we might need to give dummy_dso_handle a real value. this is already done in JIT.cpp, search for HAVE___DSO_HANDLE. Probably the interpreter and MCJIT just need to get t...

Resending :(. Any pointers? tia On 5/21/2012 2:46 PM, Ashok Nalkund wrote: > On 5/21/2012 11:15 AM, Nick Lewycky wrote: >> Ashok Nalkund wrote: >>> Resending, any pointers? I demangled the symbol and it turns out to be: >>> std::__1::locale::use_facet(std::__1::locale::id&) const >> >> My guess is that you've got a .bc file produced on a mac using

...          if (MR.isGlobalValue()) { > +                         void* ResultPtr = TheJIT->getPointerToGlobalIfAvailable(MR.getGlobalValue()); > +                         if (BufferBegin <= ResultPtr && ResultPtr < BufferEnd) { > +                                 TheJIT->updateGlobalMapping(MR.getGlobalValue(), 0); > +                         } > +                 } > +         } > +         retryWithMoreMemory(F); > +         ConstPoolAddresses.clear(); > +         return true; >   } else { >     // Now that we've succeeded in emitting the function, reset...

Dong Chen <jameschennerd at gmail.com> writes: > hello guys, > recently, i successfully get and modify global variable by execution engine. > the functions i used are listed here: > int m=1; > EE->updateGlobalMapping(p->M->getGlobalVariable("x",true),&m); > EE->recompileAndRelinkFunction(EntryFn); > x is the global variable in the module. > but how to modify the local variable in the module? A local variable does not exists until the function that defines it is executed, so pre...

>> You probably want replaceAllUsesWith. > > I am sorry I don't understand. Are you suggesting calling replaceAllUses of > the .str1? What I really want to do is to 'erase' the function. By erasing > I'd expect the uses of .str1 to 0 (because in the example I have it is used > only by f()) and I see they are not. To remove something, the normal idiom is

On 10/24/13 2:13 AM, Rafael Espíndola wrote: > On 23 October 2013 22:41, Vassil Vassilev <vvasilev at cern.ch> wrote: >> Hi, >> I have: >> ... >> @.str1 = private unnamed_addr constant [21 x i8] c"Now f is a >> function\0A\00", align 1 >> ; Function Attrs: ssp uwtable >> define i32 @_Z1fv() #2 { >> entry: >> %call =

On Jul 26, 2011, at 4:03 AM, Garrison Venn wrote: >> Hi Garrison, >> >> Do the other two threads answer the question here? >> >> -Chris > > Yes I believe the other threads concerning the same issue answer why the system, because > of the lack of type linkage, is lenient in "unioning" types. What I'm still uncomfortable with is, I >

Hi, That seems really simple... just changing the function pointer. But how to do it for the 'printd' function in the Kaleidoscope example? An example how to do this would be super-great. Any help will be much appreciated. Thanks! On Sat, Oct 9, 2010 at 3:55 PM, OvermindDL1 <overminddl1 at gmail.com> wrote: > 2010/10/9 António Saragga Seabra <antseabra at gmail.com>:

2010/10/9 António Saragga Seabra <antseabra at gmail.com>: > I'm on Windows using MinGW... > > 2010/10/9 OvermindDL1 <overminddl1 at gmail.com> >> >> 2010/10/5 António Saragga Seabra <antseabra at gmail.com>: >> > Hi >> > >> > Thank you for your help! Followed your suggestion closely and changed >> > the >> >

Thanks for the response Chris, On Jul 26, 2011, at 0:44, Chris Lattner wrote: > > On Jul 25, 2011, at 10:50 AM, Garrison Venn wrote: > >> Several people on this list have reported issues with the linker regarding a >> named StructType instance with the same name in two different modules >> being resolved into two StructTypes with different names due to StructType::

Hello! Working with LLVM JIT-compiler I found a small bug and I'd like to correct it. Namely, on some tests LLVM fails with message "JIT: Ran out of space for generated machine code!" This error emerges because the test creates big static array. Global variables are placed into memory block for function, that is first seen using given variable. Besides, during memory allocation

Hi everyone, vmkit requires to know the size of a jitted method before emitting the method. This allows to allocate the correct size for the method. The attached patch creates this functionality when the flag SizedMemoryCode is on. In order to implement this functionality, i had to virtualize some MachineCodeEmitter functions. Is it OK to commit the patch? Thanks, Nicolas --------------

...tPool()); >> + initJumpTableInfo(F.getJumpTableInfo()); >> + >> + // About to start emitting the machine code for the function. >> + emitAlignment(std::max(F.getFunction()->getAlignment(), 8U)); >> + >> + } >> + >> + >> TheJIT->updateGlobalMapping(F.getFunction(), CurBufferPtr); >> >> MBBLocations.clear(); >> @@ -579,12 +614,18 @@ >> DOUT << "Disassembled code:\n" >> << sys::disassembleBuffer(FnStart, FnEnd-FnStart, >> (uintptr_t)FnStart); >> #endif >> + &...