similar to: [LLVMdev] ld with gold-plugin can do this?

zhunan wrote: > Hi,all > > I have installed the gold-plugin and it can run correctly,but I still > have another two questions: > > 1.Can gold-plugin generate a bitcode file: No. The task of linking many .bc files into a single .bc file falls on llvm-ld and llvm-link. A common followup question is "but how do I link native libraries into my .bc file". You

A common followup question is "but how do I link native libraries into my .bc file". You don't. A .bc file is llvm ir, you can't put a native binary library into a .bc (barring sticking it in as a string, etc). The build then looks like: a) 'llvm-gcc -c -flo -O2' to generate the .bc files. b) 'llvm-ld' to combine them into a single .bc. No, not a .so nor a .a.

Nick Lewycky wrote: > Sanjiv.Gupta at microchip.com wrote: >> >> >> A common followup question is "but how do I link native libraries into >> my .bc file". You don't. A .bc file is llvm ir, you can't put a native >> binary library into a .bc (barring sticking it in as a string, etc). >> >> The build then looks like: >> >>

Sanjiv.Gupta at microchip.com wrote: > > > A common followup question is "but how do I link native libraries into > my .bc file". You don't. A .bc file is llvm ir, you can't put a native > binary library into a .bc (barring sticking it in as a string, etc). > > The build then looks like: > > a) 'llvm-gcc -c -flo -O2' to generate the .bc

Sanjiv Gupta wrote: > Nick Lewycky wrote: >> Sanjiv.Gupta at microchip.com wrote: >>> >>> >>> A common followup question is "but how do I link native libraries into >>> my .bc file". You don't. A .bc file is llvm ir, you can't put a native >>> binary library into a .bc (barring sticking it in as a string, etc). >>>

Yes,but when I just simply replace lto_codegen_compile(cg, ...) with lto_codegen_write_merged_modules(cg, "/path/to/output.bc") in the gold-plugin.cpp to see if it will generate a correct bc file,the llvm-gcc/llvm-g++ will call the native ld in the linking step,which causes the failture because of that ld can not recognize an object file which contains LLVM's IL. I understand the

2009/10/19 zhunan <zhunansjtu at gmail.com>: > Yes,but when I just simply replace lto_codegen_compile(cg, ...) with > lto_codegen_write_merged_modules(cg, "/path/to/output.bc") in the > gold-plugin.cpp to see if it will generate a correct bc file,the > llvm-gcc/llvm-g++ will call the native ld in the linking step,which > causes the failture because of that ld can not

Thank you for the reply,but I meant that when we building,we can not use the native tools such ar and as to process the llvm files,we must have the ability to call llvm-ar and llvm-as instead of the native ones. 在 2009-10-17六的 19:35 -0700，Nick Lewycky写道： > zhunan wrote: > > Hi, > > > > I don't think just use gold-plugin even modified is enough for the task > > of

Yes,but ubuntu's directory structure is not exactly the same as the classic linux distribute, I put libLLVMgold.so in /usr/lib/gcc/i486-linux-gnu/4.2.4 where cc1 is also in. Strange situation,is it a bug for llvm-gcc???? 在 2009-09-18五的 12:58 +0300，Török Edwin写道： > On 2009-09-18 03:06, Nan Zhu wrote: > > OMG,that's just my situation... > > > > I can link with

2009/10/17 zhunan <zhunansjtu at gmail.com>: > Thank you for the reply,but I meant that when we building,we can not use > the native tools such ar and as to process the llvm files,we must have > the ability to call llvm-ar and llvm-as instead of the native ones. We can use the native tools if they understand llvm IL :-) That is what the plugin does. With it installed you can run

Hi, I don't think just use gold-plugin even modified is enough for the task of building a whole-program bc file. When we want to build a whole-program bc file by a general solution(I meant that we can use such a method for all kinds of build system),we need not only a gold-plugin to do what llvm-ld does,but also some mechanisms,not a simple trick to modify the env variables,to run

I truly get the bytecode file for each souce file,but can I use llvm-link to link them into a whole-program one automatically through some scripts? > > Message: 27 > Date: Tue, 15 Sep 2009 03:16:10 +0200 > From: ?scar Fuentes <ofv at wanadoo.es> > Subject: Re: [LLVMdev] Replace gcc with llvm-gcc??? > To: llvmdev at cs.uiuc.edu > Message-ID: <87vdjlnh2d.fsf at

Just set llvm-ld as the default ld . Such as LD = llvm-ld in makefile, if it's not working, then there is no solution 2009/9/15, zhunan <zhunansjtu at gmail.com>: > I truly get the bytecode file for each souce file,but can I use > llvm-link to link them into a whole-program one automatically through > some scripts? > > >> >> Message: 27 >> Date: Tue, 15

2009/9/18 zhunan <zhunansjtu at gmail.com>: > Yes,but ubuntu's directory structure is not exactly the same as the > classic linux distribute, > > I put libLLVMgold.so in /usr/lib/gcc/i486-linux-gnu/4.2.4 where cc1 is > also in. > > Strange situation,is it a bug for llvm-gcc???? Could be. Are you comfortable using gdb? Last time I looked it was working for me.

On 2009-09-19 03:28, zhunan wrote: > Yes,but ubuntu's directory structure is not exactly the same as the > classic linux distribute, > > I put libLLVMgold.so in /usr/lib/gcc/i486-linux-gnu/4.2.4 where cc1 is > also in. > > Are you sure that is llvm-gcc's cc1, and not your system compiler's? Try this: $ llvm-gcc -### -x c /dev/null Then look for a line

zhunan wrote: > Hi, > > I don't think just use gold-plugin even modified is enough for the task > of building a whole-program bc file. > > When we want to build a whole-program bc file by a general solution(I > meant that we can use such a method for all kinds of build system),we > need not only a gold-plugin to do what llvm-ld does,but also some > mechanisms,not a

On Wed, 2009-07-15 at 10:37 -0700, Devang Patel wrote: > On Wed, Jul 15, 2009 at 9:32 AM, sanjiv gupta<sanjiv.gupta at microchip.com> wrote: > > Consider the example command line below > > > > $ llvm-ld -disable-opt hello.bc -l std -o hello.out > > > > Why does -disable-opt links in all the bitcode from the libstd.so into > > hello.out? > > ...

Consider the example command line below $ llvm-ld -disable-opt hello.bc -l std -o hello.out Why does -disable-opt links in all the bitcode from the libstd.so into hello.out? - Sanjiv

On Wed, Jul 15, 2009 at 7:29 PM, sanjiv gupta<sanjiv.gupta at microchip.com> wrote: > On Wed, 2009-07-15 at 10:37 -0700, Devang Patel wrote: >> On Wed, Jul 15, 2009 at 9:32 AM, sanjiv gupta<sanjiv.gupta at microchip.com> wrote: >> > Consider the example command line below >> > >> > $ llvm-ld -disable-opt hello.bc -l std -o hello.out >> >

> exactly Well, in general, there is no connection between the performance on x86 and on ARM. You can try to profile your code and find what causes the speedup on x86 and figure out the slowdowns on ARM. -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University