similar to: [LLVMdev] How to add a new target/toolchain to Clang ?

Thanks Tom for your help, it as indeed very easy to make the link with the linker (not sick joke). Unfortunately, clang generates object files for target x86_64, even though I try --target --triple, --arch, ... What is the trick to tell him which target to use ? -- Fred ps: not looked yet at inline assembly 2015-07-09 18:40 GMT+02:00 Tom Stellard <tom at stellard.net>: > On Thu, Jul

Dear all, I have been working on a new LLVM backend. Some instructions, like sub, can take an positive constante, encoded into 5 bits thus lower than 32, and a register, as operands. Unfortunately, DAGCombiner.cpp changes patterns like 'sub x, 5' into 'add x,-5'. Similarly, I found changes in some IR to IR passes, with no clear gain (at least not clear to me), and even penalty

Dear all, I don't get how llvm handles functions with __attribute__((noreturn)). It seems that LR register is backed up on the stack whilst it will never be used to return from a 'noreturn' function. I have this problem with a home-made backend but it seems that ARM flavour of clang has same behaviour. By the way, SP is also saved, I don't understand why. Is there a syntax error

I have an Access application that work with some shared database file. The file is ~ 3 Mb. Since I have a Linux system with Samba, this application work very slow. I have multiple user with win95 on this file. Is there an option for allowing multiple access without cache ? any other idea ? Thanks. ___________________________________________________________ S?bastien HEITZMANN

Dear LLVM crew, I have been writing a new LLVM backend with a very simple instruction set. moving a constant value to a register is selected as a load of the constant, with a PC-relative positive offset. Thus, the constant should be stored in .text section, after the load instruction, and offset should be computed at compile time (not link time). I struggle to find out : - how llvm handle

2015-07-08 17:58 GMT+02:00 escha <escha at apple.com>: > [...] > > If you want to “revert" this sort of thing, you can do it at Select() time > or PreprocessISelDAG(), which is what I did on an out-of-tree backend to > turn add X, -C into sub X, C on selection time. This still lets all the > intermediate optimizations take advantage of the canonicalization. > >

Hi all, I use llvm-clang with a MIPS target, and it seems that the backend generates wrong reloc info. I attach a very simple test case. * Compile test.c with 'clang -internal-as -g' * use mips-elf-objdump -S to get the generate assembly code (see test.lst) * use mips-elf-readelf -a to look for relocation info (see test.readelf) All relocations for static data are 0000 ?! I did not

> De : Joerg Sonnenberger [mailto:joerg at britannica.bec.de] > > Well, MCFixup is what a relocation is represented as internally. They get > resolved to a fixed value and replaced, if evaluateAsAbsolute is true. > Hi Joerg, Actually it fails to get resolved to a fixed value. When I compile to .o then objdump it I can see that a symbol holding the constant value was created in

Hi all, I work on an embedded target, in which function assert is an infinite while(1) loop. It is a common technique to set a breakpoint in the loop, in case some error occurs while debugging. It looks like clang simply *removes* any call to assert when compiling with -O1 (not -O0). note 1 : the name 'assert' is not the problem. note 2 : if the while(1) loop has some side effect,

> De : Joerg Sonnenberger [mailto:joerg at britannica.bec.de] > > The basic idea is to still create a relocation on the MC level, but fix it up later. > You didn't say if your ISA is fixed or variable length, the former, can simplify > this quite bit. The constant island pass generally tries to address two issues: > (1) Merging of identical constants. > (2) Splitting the

> ld-new works only with those objects which are compiled using native gcc but > doesn't work for cross-compiler gcc/arm. Ok, please show: ld --version and last few lines of the ld --help output -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

All, I am running xen3.0.2 and xen unstable on RHEL 4, and get this error when trying to boot Xen kernel(domain0) ...... Creating root device Mounting root filesystem mount: error 6 mounting ext3 mount: error 2 mounting none Switching to new root switchroot: mount failed: 22 umount /initrd/dev failed: 2 Kernel panic - not syncing: Attempting to kill init! Then system reboot.In grub.conf,I have

All, I am running xen3.0.2 and xen unstable on RHEL 4, and get this error when trying to boot Xen kernel(domain0) ...... Creating root device Mounting root filesystem mount: error 6 mounting ext3 mount: error 2 mounting none Switching to new root switchroot: mount failed: 22 umount /initrd/dev failed: 2 Kernel panic - not syncing: Attempting to kill init! Then system reboot.In grub.conf,I have

I was at http://rails.techno-weenie.net/ and I like what ajax does when you click on "login" how can I do this on my own website? Is this with the defualt JS libary? -- Posted via http://www.ruby-forum.com/.

Did you mean ld-new ? ld-new -v GNU gold (GNU Binutils 2.20.51.20100707) 1.9 ld-new --help ./ld-new: supported targets: elf32-i386 elf32-i386-freebsd elf64-x86-64 elf64-x86-64-freebsd elf64-sparc elf32-sparc elf64-powerpcle elf64-powerpc elf32-powerpcle elf32-powerpc elf32-bigarm elf32-littlearm On Mon, Jul 12, 2010 at 6:52 PM, Anton Korobeynikov <anton at korobeynikov.info > wrote:

Hello Leslie, I think we are going to need to know a bit more about the ELF ABI for what looks like the ArcCompact before we can help you. LLD's calculation of P (the place to be relocated) is as it is in the generic ELF specification. The Rel.Offset corresponds to the ELF r_offset field. This is covered by: "For a relocatable file, the value is the byte offset from the beginning of the

Hello everyone. How do I get R to ask users for data to be entered? Specifically I want to ask for a z score to be entered (the user would look this up in a table) and then use the entered data to compute a Dunn's post-hoc test (post kruskal.test). I've tried the "ask" function but it's not recognised - maybe I don't have to appropriate libary installed. A pointer

Hello Leslie, I don't know quite what to say as I don't know precisely what your question is? If I am not being precise enough please can you put some explicit questions in? From what I can see in the output, here are some comments. >From your arc mapfiles it looks like that in the output both linker's have given the .text output section the correct base address given the

When I compile klibc on little-endian mips, I get: KLIBCLD klibc/libc.so ld: klibc/arch/mips/crt0.o: compiled for a little endian system and target is big endian ld: klibc/arch/mips/crt0.o: endianness incompatible with that of the selected emulation ld: failed to merge target specific data of file klibc/arch/mips/crt0.o When I change "elf32-tradbigmips" to

We have NFS mounted drives. I first build an clang/llvm hosted compiler for Mips linux using the clang/llvm linux x86 compiler. Call this clang1. then in directory recurse on Mips host, I place this clang1 compiler and build clang2. then i rename recurse to recurse1 and create a new recurse directory. in recurse I copy clang2 from recurse1 to a recurse but name it clang1. then i build