search for: encodeinstruction

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2020 Feb 04
3
Reporting source errors from MCCodeEmitter::encodeInstruction() ?
...er it doesn't prevent generation of an incorrect output file or change the process exit code. We'd prefer not to resort to report_fatal_error() since that isn't a polite way to diagnose problems in the source. Is there a sensible way to properly signal a source error from the level of encodeInstruction()? Or is it expected that all such errors are reported earlier?
2015 Sep 14
2
TableGen MCInstrDesc Instruction Size Zero
...tern const MCInstrDesc TestInsts[] = {...{ 23, 3, 1, 0, 0, 0, 0x0ULL, nullptr, nullptr, OperandInfo13, 0, nullptr }, // Inst #23 = ADD8_rr...}* I parse the instruction successfully but I am not sure what I did wrong that the Size (as you can see in the line above is Zero for this instruction. (In EncodeInstruction, Desc.getSize() returns zero.) Any help is appreciated.... Cheers, ES -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150914/fab4931f/attachment.html>
2017 Aug 26
2
Error in generating Object Code for implemented assembly vector instructions
...b/x86_64-linux-gnu/libc.so.6+0x36eca) #7 0x000000000195f6c0 LLVMInstallFatalErrorHandler lib/Support/ErrorHandling.cpp:133:0 #8 0x0000000000c08966 llvm::X86II::getSizeOfImm(unsigned long) lib/Target/X86/MCTargetDesc/X86BaseInfo.h:577:29 #9 0x0000000000c04c2a (anonymous namespace)::X86MCCodeEmitter::encodeInstruction(llvm::MCInst const&, llvm::raw_ostream&, llvm::SmallVectorImpl<llvm::MCFixup>&, llvm::MCSubtargetInfo const&) const lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp:1512:67 #10 0x00000000015884b3 llvm::MCELFStreamer::EmitInstToData(llvm::MCInst const&, llvm::MCSubtargetInf...
2010 Nov 17
1
[LLVMdev] [llvm-commits] [patch] ARM/MC/ELF add new stub for movt/movw in ARMFixupKinds
...> On Nov 11, 2010, at 7:06 PM, Jason Kim wrote: > >> Is getBinaryCodeForInst the best place to place the case for >> supporting movt/movw fixup emission? >> The call stack seems to be: >> >> #0 ARMMCCodeEmitter::getBinaryCodeForInstr >> #1 ARMMCCodeEmitter::EncodeInstruction >> #2 MCELFStreamer::EmitInstToData >> #3 MCObjectStreamer::EmitInstruction >> #4 ARMAsmPrinter::EmitInstruction >> <arm-mc-elf-s08.patch>_______________________________________________ >> llvm-commits mailing list >> llvm-commits at cs.uiuc.edu >> ht...
2011 Dec 23
0
[LLVMdev] Proposal for -filetype=obj full big endian support
Well, not so flawlessly. Yes, I get hello world working, but the current place to fix up the instructions (EncodeInstruction) is too early and misses the final expression fixups. I also continue to struggle in the lib/Target/<local target>/MCTargetDesc area to get clean, easy and elegant access to the environment such as chip/instruction variants let alone endianess. Finally, I still shouldn't be worrying abou...
2018 Apr 06
0
wrong operand in getBinaryCodeForInstr
...lt;< 16;* * // op: imm16* * op = getMachineOpValue(MI, MI.getOperand(0), Fixups, STI); -> should be operand[1]* * Value |= op & UINT64_C(65535);* * break;* * }* I have added different encoder method for operand(1) but that operand is not even propagated in Encodeinstruction.. by the way,this is how I have defined BGEID.. *def : Pat<(brcond (setcc (i32 GR32:$L), (i32 GR32:$R), SETGE), bb:$T),* * (BGEID (CMP GR32:$L, GR32:$R), bb:$T)>;* *def BGEID : TBT<0b101110, (outs), (ins GR32:$ra, brtarget:$offset), "bgeid\t$ra,$offset", [], IIC_BRc...
2012 Nov 30
0
[LLVMdev] Support for bundles of MCInst?
...verything you need with the latter. > Those issues aside, it sounds like the streamer already understands how to > process and print sub-instructions, which is good. Actually, no. The streamer knows nothing at all about sub-instructions. It's the responsibility of the printInstruction/encodeInstruction methods in your printer or decoder know that they need to recurse onto the contents of the bundle. > Will the size of the > packet be properly accounted for by the MCObjectStreamer if we have to pad > the packet (mainly for fetch alignment)? The MC system (including relaxation) is capabl...
2012 Nov 30
3
[LLVMdev] Support for bundles of MCInst?
Hello Owen, > There should already be sufficient support for what you're trying to do. See > MCOperand::CreateInst(). The concept is that you'll build a composite MCInst in > your AsmPrinter::EmitInstruction() method, which uses Inst-type MCOperands to > hold a list of sub-instructions. Then you call AsmStreamer::EmitInstruction() on the > composite MCInst. Thanks for
2013 Oct 10
0
[LLVMdev] [PATCH] R600/SI: Embed disassembly in ELF object
...SmallVector<char, 16> CodeBytes; > + raw_svector_ostream CodeStream(CodeBytes); > + > + MCObjectStreamer &ObjStreamer = (MCObjectStreamer &)OutStreamer; > + MCCodeEmitter &InstEmitter = ObjStreamer.getAssembler().getEmitter(); > + InstEmitter.EncodeInstruction(TmpInst, CodeStream, Fixups); > + CodeStream.flush(); > + > + HexLines.resize(HexLines.size() + 1); > + std::string &HexLine = HexLines.back(); > + raw_string_ostream HexStream(HexLine); > + > + for (size_t i = 0; i < CodeBytes.size(); i += 4) {...
2013 Oct 10
2
[LLVMdev] [PATCH] R600/SI: Embed disassembly in ELF object
Hi, This patch adds R600/SI disassembly text to compiled object files, when a code dump is requested, to assist debugging in Mesa clients. Here's an example of the output in a Mesa client with a corresponding patch and RADEON_DUMP_SHADERS set: Shader Disassembly: S_WQM_B64 EXEC, EXEC ; BEFE0A7E S_MOV_B32 M0, SGPR6 ; BEFC0306
2017 Jan 13
2
NDS32 V3 backend
Hi all, On behalf of Andes Technology Corp, I am proposing a backend targeting the NDS32 V3 ISA. NDS32 V3 ISA is a 16/32 bit mixed instruction set architecture that developed By AndesTech. You can find more information at the Andes website <http://www.andestech.com/>, and reference AndeStar ISA Manual (V3 ISA) from document download page <http://www.andestech.com/product.php?cls=9>.
2010 Jul 16
0
[LLVMdev] Win32 COFF Support - Patch 3
...a()->setHasInstructions(true); > + > + // FIXME: Who owns this memory? > + MCInstFragment *Fragment = > + new MCInstFragment(Instruction, getSectionData()); > + > + { > + raw_svector_ostream VecOS(Fragment->getCode()); > + > + getAssembler().getEmitter().EncodeInstruction(Instruction, VecOS, Fragment->getFixups()); > + > + // VecOS's destructor calls flush. > + } The nested block here is unnecessary. > + > + AddFragment(Fragment); > } > > void WinCOFFStreamer::Finish() { -- Thanks again for your work, I'm please to see it...
2010 Jul 14
2
[LLVMdev] Win32 COFF Support - Patch 3
On Sun, Jul 11, 2010 at 6:10 PM, Chris Lattner <clattner at apple.com> wrote: > This probably needs to be slightly tweaked to work with mainline.  I don't see anything objectionable, but I think Daniel needs to review this one. Updated patch to work with mainline. http://github.com/Bigcheese/llvm-mirror/commit/d19a4c82c18afc4830c09b70f02d162292231c94 - Michael Spencer
2017 Sep 05
2
Issues in Vector Add Instruction Machine Code Emission
I was getting same error when i keep both EVEX/EVEX_4V and TA. So, i restored my original instructions and for that i have to include bool HasTA = TSFlags & X86II::TA; in x86MCCodeEmitter.cpp then used this condition; if(HasTA) ++SrcRegNum; in order to emit binary correctly. Is it right? On Tue, Sep 5, 2017 at 5:45 AM, Craig Topper <craig.topper at gmail.com> wrote: >