[test-suite] r263456 - cmake/caches: Add some comments, more aggressive release mode

[Quentin Colombet via llvm-commits]

Thanks :).

Q.
> On Mar 14, 2016, at 11:50 AM, Matthias Braun <mbraun at apple.com> wrote:
> 
>> 
>> On Mar 14, 2016, at 11:46 AM, Matthias Braun via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> wrote:
>> 
>> 
>> 
>> 
>>> On Mar 14, 2016, at 11:33 AM, Quentin Colombet via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> wrote:
>>> 
>>> Hi Matthias,
>>> 
>>>> On Mar 14, 2016, at 11:12 AM, Matthias Braun via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> wrote:
>>>> 
>>>> Author: matze
>>>> Date: Mon Mar 14 13:12:36 2016
>>>> New Revision: 263456
>>>> 
>>>> URL: http://llvm.org/viewvc/llvm-project?rev=263456&view=rev <http://llvm.org/viewvc/llvm-project?rev=263456&view=rev>
>>>> Log:
>>>> cmake/caches: Add some comments, more aggressive release mode
>>>> 
>>>> Added:
>>>>   test-suite/trunk/cmake/caches/Release_Haswell.cmake
>>>> Modified:
>>>>   test-suite/trunk/cmake/caches/Debug.cmake
>>>>   test-suite/trunk/cmake/caches/Release.cmake
>>>> 
>>>> Modified: test-suite/trunk/cmake/caches/Debug.cmake
>>>> URL: http://llvm.org/viewvc/llvm-project/test-suite/trunk/cmake/caches/Debug.cmake?rev=263456&r1=263455&r2=263456&view=diff <http://llvm.org/viewvc/llvm-project/test-suite/trunk/cmake/caches/Debug.cmake?rev=263456&r1=263455&r2=263456&view=diff>
>>>> ==============================================================================
>>>> --- test-suite/trunk/cmake/caches/Debug.cmake (original)
>>>> +++ test-suite/trunk/cmake/caches/Debug.cmake Mon Mar 14 13:12:36 2016
>>>> @@ -1,3 +1,5 @@
>>>> +# Lowest optimization level and maximum debug information; A typical developer
>>>> +# configuration.
>>>> +set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "")
>>>> set(CMAKE_C_FLAGS_DEBUG "-O0 -g" CACHE STRING "")
>>>> set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g" CACHE STRING "")
>>>> -set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "")
>>>> 
>>>> Modified: test-suite/trunk/cmake/caches/Release.cmake
>>>> URL: http://llvm.org/viewvc/llvm-project/test-suite/trunk/cmake/caches/Release.cmake?rev=263456&r1=263455&r2=263456&view=diff <http://llvm.org/viewvc/llvm-project/test-suite/trunk/cmake/caches/Release.cmake?rev=263456&r1=263455&r2=263456&view=diff>
>>>> ==============================================================================
>>>> --- test-suite/trunk/cmake/caches/Release.cmake (original)
>>>> +++ test-suite/trunk/cmake/caches/Release.cmake Mon Mar 14 13:12:36 2016
>>>> @@ -1,4 +1,9 @@
>>>> -set(CMAKE_C_FLAGS_RELEASE "-O3 -flto" CACHE STRING "")
>>>> -set(CMAKE_CXX_FLAGS_RELEASE "-O3 -flto" CACHE STRING "")
>>>> +# Aggressive settings to produce fast code.
>>>> +set(OPTFLAGS "${OPTFLAGS} -O3 -march=native -fomit-frame-pointer -flto -DNDEBUG”)
>>> 
>>> I may be completely off as I actually don’t know when Release.cmake is used, but I am not sure I want the "-march=native” to be applied silently. The rationale is that we possibly cannot share our binary anymore between different CPUs.
>> This stuff is still in early experimental phases and not used by any in-production bots yet AFAIK. But the plan is to put common bot configurations there so it gets easy to reproduce a given build and indeed -march=XXX is a bad idea for reproducability across machines.
> I meant -march=native all the other -march=XXX are fine of course.

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