Re: Bad Arm7 code generation?
Re: Bad Arm7 code generation?
- Subject: Re: Bad Arm7 code generation?
- From: Jean-Denis MUYS <email@hidden>
- Date: Fri, 12 Aug 2011 14:04:17 +0000
- Thread-topic: Bad Arm7 code generation?
On 12 août 2011, at 14:49, Jonas Maebe wrote:
>
> On 12 Aug 2011, at 14:31, Jean-Denis MUYS wrote:
>
>> "Unrolling" the build output reveals a bit more information:
>>
>> /var/folders/sj/_9x5rtbj59bb6wqhgy_ydlxr0000gn/T/cc-jCp4JC.s:703:bad instruction `lock'
>> /var/folders/sj/_9x5rtbj59bb6wqhgy_ydlxr0000gn/T/cc-jCp4JC.s:704:bad instruction `xaddl r1,(r0)'
>> clang: error: assembler command failed with exit code 1 (use -v to see invocation)
>> Command /Xcode4.2/Platforms/iPhoneOS.platform/Developer/usr/bin/clang failed with exit code 1
>>
>> So it seems the assembler phase of the llvm compiler was fed a corrupt source file. That source file was the output of the compiler:
>
> That looks like code from a macro containing inline Intel assembler for an atomic "add & exchange". I guess one of the headers you are using was somehow preprocessed for Intel rather than for ARM.
>
This rings a bell! I have shuffled a few header files around earlier. Where is the result of header preprocessing stored?
Jean-Denis
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