[ARM] Regression between r215896 and r215960

[Renato Golin]

Hi Ismail,

Our buildbot picked it up:

http://lab.llvm.org:8011/builders/clang-native-arm-cortex-a15-self-host/builds/1985

I'm bisecting right now.

cheers,
--renato

On 19 August 2014 14:31, İsmail Dönmez <ismail at donmez.ws> wrote:
> Hi,
>
> To reproduce, get http://www.cs.utah.edu/~aek/code/card.cpp and
>
> [~]> clang++ -O1 card.cpp -o card
> clang-3.6: ../lib/Support/IntervalMap.cpp:138: IdxPair
> llvm::IntervalMapImpl::distribute(unsigned int, unsigned int, unsigned int,
> const unsigned int *, unsigned int *, unsigned int, bool): Assertion `Sum ==
> Elements + Grow && "Bad distribution sum"' failed.
> Stack dump:
> 0.      Program arguments: /havana/dist/llvm/bin/clang-3.6 -cc1 -triple
> armv7-unknown-linux-gnueabihf -emit-obj -disable-free -main-file-name
> card.cpp -mrelocation-model static -mdisable-fp-elim -fmath-errno
> -masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu cortex-a8
> -target-abi aapcs-linux -mfloat-abi hard -dwarf-column-info -resource-dir
> /havana/dist/llvm/bin/../lib/clang/3.6.0 -internal-isystem
> /usr/lib/gcc/arm-linux-gnueabihf/4.9/../../../../include/c++/4.9
> -internal-isystem
> /usr/lib/gcc/arm-linux-gnueabihf/4.9/../../../../include/c++/4.9/arm-linux-gnueabihf
> -internal-isystem
> /usr/lib/gcc/arm-linux-gnueabihf/4.9/../../../../include/c++/4.9/backward
> -internal-isystem
> /usr/lib/gcc/arm-linux-gnueabihf/4.9/../../../../include/arm-linux-gnueabihf/c++/4.9
> -internal-isystem /usr/local/include -internal-isystem
> /havana/dist/llvm/bin/../lib/clang/3.6.0/include -internal-externc-isystem
> /usr/include/arm-linux-gnueabihf -internal-externc-isystem /include
> -internal-externc-isystem /usr/include -O1 -fdeprecated-macro
> -fdebug-compilation-dir /home/ismail -ferror-limit 19 -fmessage-length 104
> -mstackrealign -fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions
> -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o
> /havana/tmp/card-13c953.o -x c++ card.cpp
> 1.      <eof> parser at end of file
> 2.      Code generation
> 3.      Running pass 'Function Pass Manager' on module 'card.cpp'.
> 4.      Running pass 'Greedy Register Allocator' on function
> '@_Z1T1vS_RfRS_'
> clang-3.6: error: unable to execute command: Aborted
> clang-3.6: error: clang frontend command failed due to signal (use -v to see
> invocation)
> clang version 3.6.0 (215976)
> Target: armv7l-unknown-linux-gnueabihf
> Thread model: posix
> clang-3.6: note: diagnostic msg: PLEASE submit a bug report to
> http://llvm.org/bugs/ and include the crash backtrace, preprocessed source,
> and associated run script.
> clang-3.6: note: diagnostic msg:
> ********************
>
> PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
> Preprocessed source(s) and associated run script(s) are located at:
> clang-3.6: note: diagnostic msg: /havana/tmp/card-e32b8e.cpp
> clang-3.6: note: diagnostic msg: /havana/tmp/card-e32b8e.sh
> clang-3.6: note: diagnostic msg:
>
> ********************
>
> This is on a native ARMv7 host (BeagleBone Black) and r215896 works fine.
>
>
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