ARM regression between r223766 and r223925

[Renato Golin]

Hi Ismail,

That is odd. Can you post your example and the full command line?

I see you're using c++14, maybe that's why it wasn't caught by the build bots...

--renato

On 11 December 2014 at 10:20, İsmail Dönmez <ismail at donmez.ws> wrote:
> A very simple hello world compilation crashes the compiler on ARMv7+neon
>
> [~]> clang++ hello.cpp
> clang-3.6: ../include/llvm/IR/Instructions.h:3177: llvm::BasicBlock
> *llvm::InvokeInst::getSuccessor(unsigned int) const: Assertion `i < 2
> && "Successor # out of range for invoke!"' failed.
> Stack dump:
> 0. Program arguments: /havana/dist/llvm/bin/clang-3.6 -cc1 -triple
> armv7-unknown-linux-gnueabihf -emit-obj -mrelax-all -disable-free
> -main-file-name hello.cpp -mrelocation-model static -mthread-model
> posix -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 /havana/dist/llvm/bin/../include/c++/v1
> -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 -std=c++14 -fdeprecated-macro -fdebug-compilation-dir
> /home/ismail -ferror-limit 19 -fmessage-length 127 -mstackrealign
> -fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
> -fdiagnostics-show-option -fcolor-diagnostics -o
> /havana/tmp/hello-69a308.o -x c++ hello.cpp
> 1. <eof> parser at end of file
> 2. Code generation
> 3. Running pass 'Function Pass Manager' on module 'hello.cpp'.
> 4. Running pass 'ARM Instruction Selection' on function
> '@_ZNSt3__14endlIcNS_11char_traitsIcEEEERNS_13basic_ostreamIT_T0_EES7_'
> 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 (trunk 223925)
> 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/hello-6f14b1.cpp
> clang-3.6: note: diagnostic msg: /havana/tmp/hello-6f14b1.sh
> clang-3.6: note: diagnostic msg:
>
> ********************
>
> r223766 is OK.