llvm dev - Mar 2008 - [LLVMdev] llvm-gcc 4.2 building failed on x86-64

Current llvm-gcc 4.2 building failed on X86-64,  here is the dump
information:

xgcc -B/home/zsth/projects/llvm.org/build/cfe4.2obj/./prev-gcc/
-B/home/zsth/projects/llvm.org/install/x86_64-unknown-linux-gnu/bin/
-I../../../cfe4.2/libcpp -I. -I../../../cfe4.2/libcpp/../include
-I../../../cfe4.2/libcpp/include -DENABLE_LLVM -g -O2 -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition -Wmissing-format-attribute -pedantic -Wno-long-long
-I../../../cfe4.2/libcpp -I. -I../../../cfe4.2/libcpp/../include
-I../../../cfe4.2/libcpp/include -DENABLE_LLVM -c -o directives.o -MT
directives.o -MMD -MP -MF .deps/directives.Po
../../../cfe4.2/libcpp/directives.c
../../../cfe4.2/libcpp/directives.c: In function 'do_pragma':
../../../cfe4.2/libcpp/directives.c:1376: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions

Any ideas?

My gcc version:
gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../gcc-4.0.4/configure
--prefix=/home/toolman/gcc4.0.4-x86_64 --enable-languages=c,c++
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.0.4



Thanks,
Sheng.
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Hi Sheng
Am Dienstag, 4. März 2008 schrieb Zhou Sheng:
> Current llvm-gcc 4.2 building failed on X86-64,  here is the dump
I am not followng head closely but may it be that the current head still 
doesn't support amd64 proper:

gcc README.LLVM:
"When targeting non-darwin X86-64/AMD-64/EM64-T, configure with
--disable-shared.  The LLVM X86-64 backend doesn't support PIC codegen on
non-darwin systems yet.  If you get a build error, try configuring with
--disable-multilib."

Best regards
ST

On Mar 4, 2008, at 2:39 AM, ST wrote:
> Hi Sheng
> Am Dienstag, 4. März 2008 schrieb Zhou Sheng:
>> Current llvm-gcc 4.2 building failed on X86-64,  here is the dump
> I am not followng head closely but may it be that the current head  
> still
> doesn't support amd64 proper:
>
> gcc README.LLVM:
> "When targeting non-darwin X86-64/AMD-64/EM64-T, configure with
> --disable-shared.  The LLVM X86-64 backend doesn't support PIC  
> codegen on
> non-darwin systems yet.  If you get a build error, try configuring  
> with
> --disable-multilib."
I encountered this bug intermittently using llvm Release, but cannot  
reproduce it when using llvm Debug. But the failure occurs inside of  
llvm.

Consequently, your suggestion won't work.

Also, the build is broken on x86_64 because somehow references to  
alloca() turned into an unresolved extern.


-scooter

Hi Sheng,

If you're still seeing this, try getting a .ll file from the code and  
then running bugpoint on it. If you're unable to get the .ll file (it  
still crashes when using -S -emit-llvm), then try running "delta" on  
the pre-processed file. See this webpage for details on how to run  
delta:

	http://gcc.gnu.org/wiki/A_guide_to_testcase_reduction

This will at least give us a starting point. :-)

-bw

On Mar 4, 2008, at 1:24 AM, Zhou Sheng wrote:
> Current llvm-gcc 4.2 building failed on X86-64,  here is the dump  
> information:
>
> xgcc -B/home/zsth/projects/llvm.org/build/cfe4.2obj/./prev-gcc/ -B/ 
> home/zsth/projects/llvm.org/install/x86_64-unknown-linux-gnu/bin/ - 
> I../../../cfe4.2/libcpp -I. -I../../../cfe4.2/libcpp/../include - 
> I../../../cfe4.2/libcpp/include -DENABLE_LLVM -g -O2 -W -Wall - 
> Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style- 
> definition -Wmissing-format-attribute -pedantic -Wno-long-long - 
> I../../../cfe4.2/libcpp -I. -I../../../cfe4.2/libcpp/../include - 
> I../../../cfe4.2/libcpp/include -DENABLE_LLVM -c -o directives.o - 
> MT directives.o -MMD -MP -MF .deps/directives.Po ../../../cfe4.2/ 
> libcpp/directives.c
> ../../../cfe4.2/libcpp/directives.c: In function 'do_pragma':
> ../../../cfe4.2/libcpp/directives.c:1376: internal compiler error:  
> Segmentation fault
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://developer.apple.com/bugreporter> for instructions
>
> Any ideas?
>
> My gcc version:
> gcc -v
> Using built-in specs.
> Target: x86_64-redhat-linux
> Configured with: ../gcc-4.0.4/configure --prefix=/home/toolman/ 
> gcc4.0.4-x86_64 --enable-languages=c,c++ --host=x86_64-redhat-linux
> Thread model: posix
> gcc version 4.0.4
>
>
>
> Thanks,
> Sheng.
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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