[LLVMdev] Usage of llvmc

Seung Jae Lee lee225 at uiuc.edu
Mon May 28 00:25:16 PDT 2007

Thank you so much for your reply, Chris.
If so, can I ask you two things more?

First, is there any way to have various optimizations on LLVM assembly such as -O options in llvmc?
llvm-gcc doesn't seem to be working for these -O options...

Second, I'm still not sure about difference between *.s and *.ll.
LLVM assembly *.s file can be made from llvm-gcc -S.
Another assembly *.ll file comes from just llvm-gcc.
Is the difference between these two extensions on the optimized state?

Seung J. Lee

---- Original message ----
>Date: Mon, 28 May 2007 00:08:47 -0700 (PDT)
>From: Chris Lattner <sabre at nondot.org>  
>Subject: Re: [LLVMdev] Usage of llvmc  
>To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu>
>On Mon, 28 May 2007, Seung Jae Lee wrote:
>> Hello, guys.
>> I've tried to use llvmc to test optimization options but wasn't successful.
>> Would you mind telling me what's wrong with this?
>Hi, llvmc is experimental and isn't really supported.  I'd suggest using 
>llvm-gcc instead.
>> -------------------------------------------------------------
>> $ llvmc chc_03.c -O3 -o chc_03
>> terminate called after throwing an instance of 'std::string'
>> llvmc((anonymous namespace)::PrintStackTrace()+0x15)[0x8086091]
>> /lib/tls/libc.so.6(abort+0xe9)[0x367199]
>> /usr/lib/libstdc++.so.6(__gnu_cxx::__verbose_terminate_handler()+0xeb)[0x74e25b]
>> /usr/lib/libstdc++.so.6[0x74bf71]
>> /usr/lib/libstdc++.so.6[0x74bfa6]
>> /usr/lib/libstdc++.so.6[0x74c0ef]
>> llvmc(llvm::LLVMC_ConfigDataProvider::ReadConfigData(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0x849)[0x8066f65]
>> [0x0]
>> Aborted
>> $
>> -------------------------------------------------------------
>> Forgive my ignorance.
>> Thank you.
>> Seung Jae Lee
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