similar to: Debugging a issue in MachineFrameInfo?

I start my porting for picoblaze,the soft cpu for fpga ,which is designed by XILINX from MSP430 porting . After some day's work , somethinig looks good , for it can generate for some simple C program: eg : int f1(int a) { return a+1; } but it failed with this : char f() { char a; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++; a++;

I am new to the LLVM, and need some help with this points. 1. how can we add special code for the Prolog/Epilog for some certain functions, this should be done with machinefunction pass, rt? 2. Basically, I want to get the function stack frame, that is the size and the initial position. I found int64_t llvm::MachineFrameInfo::getObjectSize ( int *ObjectIdx* ) const[inline] This method is

I'm having trouble with virtual registers/register allocation in my back-end. Basically the FastRegAlloc pass is generating calls to storeToStackSlot and loadFromStackSlot, in which we build new machine instructions, which are then _not_ processed by the reg allocator. I understand that BuildMI is changing the list of MachInst. that the allocator is iterating over, but we need to have a new

Hello, In MachineFrameInfo::print (llvm-6.0.0) line 235, when printing SP offsets, shouldn't it be // -> consider stack growth direction int64_t Off = StackGrowsDown ? SO.SPOffset - ValOffset : SO.SPOffset + ValOffset; Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I found that is possible to introduce some changes in the stack layout; however, where I can find more information about how to use it (I am reading code). For example, how I can align the stack to the maximum size (what is the max size?), or how I can protect it? Can I set up the condiction using flags at compiler time or I need to change the code? -- Juan Carlos -------------- next

Hello All, I just svn update % svn info . Path: . URL: http://llvm.org/svn/llvm-project/llvm/trunk Repository Root: http://llvm.org/svn/llvm-project Repository UUID: 91177308-0d34-0410-b5e6-96231b3b80d8 Revision: 54012 Node Kind: directory Schedule: normal Last Changed Author: wangmp Last Changed Rev: 54007 Last Changed Date: 2008-07-25 03:30:26 +0200 (Fri, 25 Jul 2008) make[3]: Entering

The following problems happens with architectures, where stack alignment is smaller than the biggest preferred alignment for any data type SP pointer may point anywhere with alignment of stack alignment (4 in our case) SelectionDAGBuilder however calls CreateStackObject with preferred alignment is given data type(8 in our problemaric case. The ABI alignment for this data type is only 4) This

Hi, I have a problem getting a properly aligned stack for my LLVM backend. I've asked about this previously, but unfortunately only now could try the suggested solution. For reference, here's the original message from me: http://mail.cs.uiuc.edu/pipermail/llvmdev/2004-July/001388.html And here's reply from Chris: http://mail.cs.uiuc.edu/pipermail/llvmdev/2004-July/001390.html The

Hi, right at the moment, LLVM won't align the stack for leaf functions. So, if stack alignment is 8 bytes, and leaf function has 1 variable of 4 bytes, the size of frame will be computed as 4 bytes, making stack pointer inside function non-aligned. I've mentioned this before: http://lists.cs.uiuc.edu/pipermail/llvmdev/2005-March/003701.html but did not pursue the issue back then.

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I mentioned a ghost file. Here is the dump (less than 65M): http://dev.mccme.ru/~raskin/btrfs.dump ghost file is: 885dj1l4788pymp3bk2f3dz52ggcvw4v-empty/garbage-1/mwave.h.tmp-31838-1822528541 It has a name, but stat fails (so no inode, I guess). Also I can create another file with the same name in the directory. I cannot remove the file, or

On Tue, 22 Mar 2005, Vladimir Prus wrote: > The PrologEpilogInserter.cpp file aligns the stack only if > MachineFrameInfo::hasCalls returns true, which happens only if the function > has "call frame setup instruction" which my backend does not generate. > Chris suggested adding explicit MachineFrameInfo::setHasCalls call, which I've > tried, but it does not help. The

Hello, I'm trying to minimize the processing time for llc -O3 by using a three step compilation process of 1. llc input.bc -stopafter=targetlibinfo -o input.mir 2. llc -run-pass={....min passes...} input.mir -o opt.mir 3. llc -startafter=machine-opt-remark-emitter -filetype=obj opt.mir -o final.obj Examining the passes produced by llc for O1,O2,O3 I compared (with XXX = {1,2,3}): llc

I investigated the MachineFunctionPass (that is runOnMachineFunction, I believe). In my experimentation it didn't seem that the MachineFrameInfo was populated (it consistently said that the stack depth was 0, for example). I might have been doing something wrong? On Fri, Jul 8, 2011 at 5:21 PM, John Criswell <criswell at illinois.edu> wrote: > On 7/8/11 4:09 PM, Andrew Ruef wrote:

On 7/8/11 4:49 PM, Andrew Ruef wrote: > I investigated the MachineFunctionPass (that is runOnMachineFunction, > I believe). A MachineFunctionPass is a class that you inherit from to write a transform that operates on MachineInstrs (i.e., native code instructions generated from the LLVM IR instructions). The runOnMachineFunction() method is its entry point (i.e., the code generator

Something is adding a bogus comment string. Specifically " # %case^M18 ", where "^M" is a single ctrl-M character. The ^M is seen by the asm parser as an end-of-line, so the '18' is a new token at the start of a line, not part of the comment. Is your pass perhaps using label names which might include literal "^M" characters? -Jim On Jun 13, 2012, at

Can you tell us a bit more about what you're trying to accomplish? Changes to the IR performed during MachineFunctionPass::doInitialization will likely propagate down through code generation, but at that point what is the purpose of using a MachineFunctionPass? You won't have any analysis or instruction information available until runOnMachineFunction. On Mon, Aug 5, 2013 at 12:00 PM,

Hi, I'm having some problem with llvm-mc on a program after applying a pass: ../../../build/Release+Asserts/bin/clang -emit-llvm -c -I./testprof/ -I./src/headers/ -I../libtommath-0.42.0/ -Wall -Wsign-compare -W -Wshadow -Wno-unused-parameter -DLTC_SOURCE -O0 -DLTC_NO_ASM -DUSE_LTM -DLTM_DESC -o src/pk/asn1/der/sequence/der_encode_sequence_ex.bc

On Mon, Jul 27, 2009 at 8:25 AM, Rudskyy<tema13tema at yahoo.de> wrote: > But now I am looking for generation of machine code for my target. I have > seen, that “llc” has option "-filetype". > > It has default value "-filetype=asm", but has more values, as > "-filetype=obj" and "-filetype=dynlib". > > “obj” is very interesting, but

Hello! I am working with LLVM project to compile for specific processor (xPEC-processor from NetX chip, http://hilscher.com/ ). I have done support of this target successfully! Assembler code can be emitted with debug information. LLVM - great!) But now I am looking for generation of machine code for my target. I have seen, that "llc" has option "-filetype". It has

Micah, Thanks for your help. I will study on that code. Justin, Sorry for my misleading word. Local memory in OpenCL is the same as share memory in CUDA. What I mean is share memory, so MachineFrameInfo is not suitable to me. And I need codegen data, so FunctionPass is also not suitable. Anyway, thanks for the suggestion. Antony 2013/8/5 Justin Holewinski <justin.holewinski at