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...ion or in IR passes. AFAIK, there is no target which has some better encoding with a negative value than with a positive one. And "sub" looks as costly as "add" to me. Is there some other practical reason to perform this kind of change ? Thanks for your highlights. -- Frederic Heitzmann -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150708/ecb42c7e/attachment.html>

...h clang. Note that my backend is rather simple, generates elf32, and I do not need about linux, libary paths, ... Can someone give me a pointer to a readme, an article, or maybe a good (i.e. simple) example ? Note :on a second step, I would like to support inline assembly in C code.. -- Frederic Heitzmann -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150709/4098d925/attachment.html>

...e 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 s.heitzmann@intranet.yellow.net ICQ 12519951 Tel : 03 89 329 328

...iles 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 09, 2015 at 03:57:53PM +0200, Frédéric Heitzmann wrote: > > Hi all, > > > > I have been developping a out-of-tree backend. > > I would like to integrate it with clang. > > Note that my backend is rather simple, generates elf32, and I do not need > > about linux, libary paths, ... > > > > Can someone...

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. > >

...2 4} !1 = !{i32 1, !"min_enum_size", i32 4} !2 = !{!"clang version 3.8.0 (git at git-lialp.intra.cea.fr:IL222352/wuc-clang.git d8f7ebf3bc146bce1b1b5e567484a56b60f2ec44) (git at git-lialp.intra.cea.fr:IL222352/wuc-llvm.git d2234a333ed3f101488a33ed3f58e2769cb8fda6)"} -- Frédéric Heitzmann

...sing is really needed, at least for simple case (i.e. small enough offset). Handling this with relocations and linker-hacking seems odd, I'd prefer to avoid it. Thanks for you help, either with some advice on the implementation strategy, or with and example in an existing backend. -- Frederic Heitzmann

> 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 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

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,

...ER%@green.kiwi-backup.com ls /mnt/data1/%USER%/snapshot goto begin It work fine but sometime, the ssh ls hang for exactelly 2 hour. I think that it's the tcp timeout of the socket. I use this sort of connection in some automatic scripts and it's really annoyoing. Any idea ? S?bastien HEITZMANN

> 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