similar to: [LLVMdev] The new MCTargetStreamer interface

Hello Everyone , We have the legacy code ,that uses the .stabs directive quiet often in the source code like .stabs "symbol_name", 100, 0, 0, 0 + .label_one f; .label_one stmt and ,the above code is wrapped with the inline asm in the c source file . we are using clang 3.8(with lto) and as you know that builtin assembler / MC streamer don't have support fir .stabs

Introduce NOKPROBE_SYMBOL() macro which builds a kprobe blacklist in build time. The usage of this macro is similar to the EXPORT_SYMBOL, put the NOKPROBE_SYMBOL(function); just after the function definition. If CONFIG_KPROBES=y, the macro is expanded to the definition of a static data structure of kprobe_blackpoint which is initialized for the function and put the address of the data structure

Hello, I'm archiving a number of bitcode files via gold plugin based on LLVM 3.4. When I find a thumbv7 bitcode with a couple of module asms, I get a segfault in ARMAsmParser::parseDirectiveFnStart because getTargetStreamer returns NULL. Frankly, I don't see how this is supposed to work because as far as I understood LTOModule::addAsmGlobalSymbols only creates a RecordStreamer

Hi Craig and Rail, At Movidius, we have had to make a few changes to ‘MCAsmStreamer’ to support our assembler which is not ‘gas’ compliant. Earlier versions of LLVM (3.1 and 3.2) did have a separate header for ‘MCAsmStreamer’, and we had previously sub-classed this. The following are modifications that we have had to make because although ‘MCAsmStreamer’ does most of what we need,

Hello everyone, I'm a newbie of llvm. I'm trying to insert Intel MPX instruction BNDCU with BuildMI. I add my machinefunctionpass at addPreEmitPass2. Here is the code of insertion: BuildMI(MBB, MI, DL, TII->get(X86::BNDCU64rr)).addReg(X86::BND2, RegState::Define).addReg(X86::R10); And here is to stack track when I compiler program with modified llc:

Hi all, we have several features in Mips that are dependent on target abi. A recent commit(r224492) introduced a new -target-abi option to TargetOptions struct that provides access to abi string. This info is stored in MCSubtarget class(ARMSubratget in this case) and distributed to other libraries. Unfortunately, for Mips we need this info in other classes that don't have access to MCSubtarget

Hi, We have a lot of non-trivial logic accumulated in the implementation of llvm-symbolizer tool (tools/llvm-symbolizer/LLVMSymbolize.{h,cpp}), for instance: * dynamic dispatch between DWARF and PDB debug info; * building address->symbol_name mapping from object file (with special cases for PowerPC function descriptor section, and COFF export tables); * finding debug info stored in separate

Does anybody know if there is a particular reason why MCAsmStreamer doesn't have its own .h file? https://github.com/llvm-mirror/llvm/blob/0e66a5f53c74056f95d178c86531d7d9cfb23da9/lib/MC/MCAsmStreamer.cpp#L41 It seems like it is a good idea to have this class declared as its own module ( its own .cpp and .h files). That would make it easier to inherit from it if there is a need (like in my

I'd like to discuss the following change: https://reviews.llvm.org/D37526 For the context, there is a comment in compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp: // Implementation for Linux. This relies on the linker's support for weak // symbols. We don't use this approach on Apple platforms because it requires // clients of LibFuzzer to pass ``-U _<symbol_name>`` to the

Hi Eric, as I was working on the same issues that are covered in your patch I also made a change in clang driver to pass this option to the assembler. Could you please review it and tell me your opinion? http://reviews.llvm.org/D6091 Thanks Vladimir ________________________________ From: Daniel Sanders Sent: Wednesday, January 28, 2015 8:59 PM To: Eric Christopher; Vladimir Medic; llvmdev at

Hi Eric, The main thing we need to fix is that the selection between ELF32/ELF64 needs to depend on the ABI being N64 and not on whether we used a mips-linux-gnu triple versus a mips64-linux-gnu triple. So 'clang -target mips-linux-gnu' -mips64r2 -mabi=64' should produce an ELF64 and 'clang -target mips64-linux-gnu -mips32r2 -mabi=32' should produce an ELF32. In terms of code,

To create unit tests is a pretty good reason IMO :) That said, I'd be a fan of trying to encapsulate all of this behind an interface. I like that most of the tools are exceptionally light weight and it makes it much more obvious what's "wrapper" versus "functionality" in something like llvm-symbolize. That said, I'll be interested to see the library design :)

Really sorry I missed this. Just found it looking for something else in my inbox. I think we should support this but * We should still err on other identifiers ".cfi_startport bar" is invalid. * If I read the gas documentation correctly, the effect of "simple" is to skip the initial cfi instructions. We should test if that is the case and implement it too. Accepting and

On Wed, Oct 21, 2015 at 12:17 PM Alexey Samsonov <vonosmas at gmail.com> wrote: > We have out-of-tree implementation of llvm-symbolizer-as-a-library, and I > still hope to upstream it one day (unfortunately, its build process is > really complicated). > > Mike can probably comment on his plans for using symbolization in > coverage-related tools. > > On Wed, Oct 21,

On Wed, Oct 21, 2015 at 1:21 PM Alexey Samsonov <vonosmas at gmail.com> wrote: > On Wed, Oct 21, 2015 at 12:59 PM, Eric Christopher <echristo at gmail.com> > wrote: > >> >> >> On Wed, Oct 21, 2015 at 12:17 PM Alexey Samsonov <vonosmas at gmail.com> >> wrote: >> >>> We have out-of-tree implementation of llvm-symbolizer-as-a-library,

Hi, I've run Clang Static Analyzer checker alpha.cplusplus.NewDeleteLeaks over LLVM codebase to detect false-positives and at the same time eliminate memory leaks. The majority of leaks were detected in lib/Target/* and lib/MC/*. In all cases the similar trick was detected as a leak (example from lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp) : static MCStreamer

Hello everyone, In the file *lib/CodeGen/AsmPrinter/AsmPrinter.cpp*, I would like to obtain an MCInst corresponding to its MachineInstr. Can anyone tell me a way to do that? If that is not possible, then, I would like to know if a given MachineInstr is an *lea *instruction and I would like to know if the symbol involved with this lea instruction is a jump-table. For instance, given a

This is just a cosmetic change in MCAsmStreamer.cpp/EmitSymbolAttribute: all attributes have now a \t before and after, as done for '.type'. This makes the output look consistent, as well as help some third party assemblers expecting the attributes to be in the second column. The patch applies cleanly on the svn head. Best regards, -- Arnaud de Grandmaison -------------- next part

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. At this moment, I

Currently the blacklist is maintained by hand in kprobes.c which is separated from the function definition and is hard to catch up the kernel update. To solve this issue, I've tried to implement new NOKPROBE_SYMBOL() macro for making kprobe blacklist at build time. Since the NOKPROBE_SYMBOL() macros can be placed right after the function is defined, it is easy to maintain. At this moment, I