similar to: [LLVMdev] Activating MIPS Code Emitter.

I need to represent each instruction with its (32-bit) binary encoding, and I reached to a conclusion that I could get the encoding through the MipsCodeEmitter. What I’m trying to do exactly is write a scheduler which tries to minimize the switching activity between the scheduled instructions in each basic block. One way to do that is by representing each instruction with its complete binary

Yes your absolutely right, the Opcode and the Operands in each machine instruction are sufficient to generate the final binary representation of the MachineInstruction but not exactly. If you take a look at the format of each MIPS instruction, you’ll see that there are some fixed bits for each instruction which are not available inside the machine instruction object –From what I saw so far-.

What are you actually trying to do? The code emitters have nothing to do with the post-RA scheduler. -Jim On May 30, 2013, at 6:23 AM, Jafar J <pluck90 at hotmail.com> wrote: > Hello, > > Is it possible to activate the MIPS code emitter during Post-RA scheduler. I tried including both MipsCodeEmitter.cpp and JITCodeEmitter.h to PostRASchedulerList.cpp, but when I rebuild

Thanks, that helps. The code emitter is definitely not the way you want to go about solving this problem, though. Are the instruction opcode (MachineInstr::getOpcode()) and the operand values not sufficient? All the information present in the encoding should be inferable from those, as that’s where the encoding comes from. -Jim On May 30, 2013, at 10:12 AM, Jafar J <pluck90 at

Hi Jim, The idea of reducing the switching activity between the instructions works by reducing the hamming distance between tow consecutive binary strings across the basic block, or reducing the number of the different bits between two consecutive instructions. This is why I need the exact complete encoding in plain 0’s and 1’s, to be as precise as possible during the scheduling process. I did

Hi Jafar, That’s not quite what I meant. Why do you need to know the exact encoding at all? The instruction opcode+operands should have all the semantic information you need without ever looking at the actual encoding. -Jim On May 30, 2013, at 11:08 AM, Jafar J <pluck90 at hotmail.com> wrote: > Yes your absolutely right, the Opcode and the Operands in each machine instruction are

On May 30, 2013, at 11:35 AM, Jafar J <pluck90 at hotmail.com> wrote: > Hi Jim, > > The idea of reducing the switching activity between the instructions works by reducing the hamming distance between tow consecutive binary strings across the basic block, or reducing the number of the different bits between two consecutive instructions. This is why I need the exact complete

Hello, why LLVM does not define physical register limits for MIPS by overriding the TargetRegisterInfo::getRegPressureLimit function the way it’s done for X86 in x86RegisterInfo.cpp and ARM. Thanks in advance. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120818/a8e4f353/attachment.html>

What is the purpose of tablegen created files for fast-isel? If I make the following change to Makefile in lib/Target/Mips BUILT_SOURCES = MipsGenRegisterInfo.inc MipsGenInstrInfo.inc \ MipsGenAsmWriter.inc MipsGenCodeEmitter.inc \ MipsGenDAGISel.inc MipsGenCallingConv.inc \ - MipsGenSubtargetInfo.inc MipsGenMCCodeEmitter.inc \ +

I'm trying to generate MipsGenAsmMatcher.inc for MipsAsmParser.cpp. What added restrictions for the .td file contents are there for tblgen -gen-asm-matcher? For the Mips platform we create the following .inc files through tblgen. tablegen(LLVM MipsGenRegisterInfo.inc -gen-register-info) tablegen(LLVM MipsGenInstrInfo.inc -gen-instr-info) tablegen(LLVM MipsGenCodeEmitter.inc -gen-emitter)

Hi Jack, On Jan 25, 2012, at 6:45 PM, "Carter, Jack" <jcarter at mips.com> wrote: > I'm trying to generate MipsGenAsmMatcher.inc for MipsAsmParser.cpp. > > What added restrictions for the .td file contents are there for tblgen -gen-asm-matcher? > Lots, as you're finding, almost all of them completely undocumented. :( > For the Mips platform we create

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

Hi! There is some typo in MipsMCTargetDesc.h. I've found them and fix it. Thanks! --Liu -------------- next part -------------- A non-text attachment was scrubbed... Name: 0001-Fix-typo-in-MipsMCTargetDesc.h.patch Type: text/x-patch Size: 1289 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110830/bbdd67cc/attachment.bin>

Thanks for your reply Quentin. I do understand that the registers are allocated much later in the pipeline. I am assuming that the physical registers are allocated before MipsAsmPrinter class. I am doing something like if (MI->getOpcode() == Mips::OPCODE) { unsigned n = MI->getNumOperands(); for(unsigned i=0 ; i < n ; i++) { const MachineOperand &MO =

Dear llvm, Recently (approximately a week ago) Clang and LLVM started to failed at building. Assuming it was my incompetence, I cleared everything and started witha fresh checkout (not that I changed it though). I am on Ubuntu 10.04 LTS 64-Bit. And I configure and compile with CMake. The error message I get at approximatley 66% is as follows: Linking CXX executable ../../bin/llvm-mc

I am having an issue with MCJIT on the ppc64 machine architecture. The symptom is that for a particular IR function the target machine won't emit neither an object nor an assembly file and subsequent calling the pointer to function results in a segfault. My application generates on the fly several functions with the builder and executes them with the MCJIT engine. I came across this

> On Feb 27, 2015, at 1:59 AM, Ambuj Agrawal <ambujbwt at gmail.com> wrote: > > Is it possible to get a register number to which the value is allocated to in MIPS in DAGToDAG class? > > More Specifically: > SDValue Reg3 = Node->getOperand(3); > if (RegisterSDNode *R = dyn_cast<RegisterSDNode>(Reg3)) >

Hi, I purchashed a Telular Phonecell Fixed Cellular Terminal. I hooked it up to my wildcard fxo card. I can receive calls and these calls are passed on to the Asterisk Calling Card application. My problem is that i can't get DTMF to work properly. If a pin number is 484443543639 i get 4844444333544336639. how can i sort out this problem. Please would like ur urgent assistance.

Hi guys Has anyone have any workarounds with Internet Explorer 6 not displaying the mailbox on Outlook Web Access properly? My specs: Wine 0.9 on FC4, IE6 installed using ies4linux The problems (as I can see): the right-click context menu on the mailbox doesn't work (it doesn't display anything) and the compose email interface is missing the place where you can actually type your mail

hi all. was having problems with my phonecell connected to wildcard fxo port. i get problems with detecting DTMF. i have tried relaxDTMF but to no avail. i have asked this before but would like possible causes. is it to do with echo? problems with the GSM network? haven't updated my asterisk for a long time. could this be a problem that has been sorted out. please would appreciate ur input