llvm dev - Dec 2003 - [LLVMdev] gcc ICE (PR13392) and LLVM

Hi LLVMers,

  there were a gcc ICE problem discussed in current mail list. 

  Chris was right here:
    http://mail.cs.uiuc.edu/pipermail/llvmdev/2003-December/000693.html
  saying that the PR 12544 is not really the corresponding issue :)

  The correct one is PR 13392:
  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13392
  
  Interesting fact is that -O2 (or -O3) goes somehow around this 
  problem. It looks like -O2 is not used here:

/home/vak/ssrc/llvm/mklib --tag=disable-shared --silent --mode=compile g++ -c
-I/home/vak/ssrc/llvm/lib/Support -I/home/vak/ssrc/llvm/lib/Support
-I/home/vak/ssrc/llvm/include -I/home/vak/ssrc/llvm/include -I../../include
-I/home/vak/ssrc/llvm/include -D_GNU_SOURCE -D__STDC_LIMIT_MACROS  -Wall -W
-Wwrite-strings -Wno-unused -g  -D_DEBUG CommandLine.cpp -o
/home/vak/ssrc/llvm/lib/Support/Debug/CommandLine.lo

and in some other LLVM libs. Is it intended?

BTW, adding -O2 really does help.

Any comments?

---
kind regards,
Valery A.Khamenya

>   The correct one is PR 13392:
>   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13392
Cool!
>   Interesting fact is that -O2 (or -O3) goes somehow around this
>   problem. It looks like -O2 is not used here:
>
> /home/vak/ssrc/llvm/mklib --tag=disable-shared --silent --mode=compile g++
-c -I/home/vak/ssrc/llvm/lib/Support -I/home/vak/ssrc/llvm/lib/Support
-I/home/vak/ssrc/llvm/include -I/home/vak/ssrc/llvm/include -I../../include
-I/home/vak/ssrc/llvm/include -D_GNU_SOURCE -D__STDC_LIMIT_MACROS  -Wall -W
-Wwrite-strings -Wno-unused -g  -D_DEBUG CommandLine.cpp -o
/home/vak/ssrc/llvm/lib/Support/Debug/CommandLine.lo
>
> and in some other LLVM libs. Is it intended?
Yup, by default, LLVM builds a "debug" build - suitable for hacking
on.
If you want an optimized build, do 'make ENABLE_OPTIMIZED=1', and look
in
lib/Release and tools/Release for the results.  Hopefully this will be
fixed in GCC soon!  :)

-Chris

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