[llvm] r228000 - [LTO API] split lto_codegen_compile to lto_codegen_optimize and

[Rafael Espíndola]

Fixed in r228012.

On 3 February 2015 at 14:20, Hans Wennborg <hans at chromium.org> wrote:
> Looks like the buildbots didn't like this:
>
> lib/libLLVMLTO.a(LTOModule.cpp.o): In function `lto_api_version':
> LTOModule.cpp:(.text.lto_api_version+0x0): multiple definition of
> `lto_api_version'
> tools/llvm-lto/CMakeFiles/llvm-lto.dir/llvm-lto.cpp.o:llvm-lto.cpp:(.text.lto_api_version+0x0):
> first defined here
> lib/libLLVMLTO.a(LTOCodeGenerator.cpp.o): In function `lto_api_version':
> LTOCodeGenerator.cpp:(.text.lto_api_version+0x0): multiple definition
> of `lto_api_version'
> tools/llvm-lto/CMakeFiles/llvm-lto.dir/llvm-lto.cpp.o:llvm-lto.cpp:(.text.lto_api_version+0x0):
> first defined here
>
>
> On Tue, Feb 3, 2015 at 10:39 AM, Manman Ren <manman.ren at gmail.com> wrote:
>> Author: mren
>> Date: Tue Feb  3 12:39:15 2015
>> New Revision: 228000
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=228000&view=rev
>> Log:
>> [LTO API] split lto_codegen_compile to lto_codegen_optimize and
>> lto_codegen_compile_optimized. Also add lto_api_version.
>>
>> Before this commit, we can only dump the optimized bitcode after running
>> lto_codegen_compile, but it includes some impacts of running codegen passes,
>> one example is StackProtector pass. We will get assertion failure when running
>> llc on the optimized bitcode, because StackProtector is effectively run twice.
>>
>> After splitting lto_codegen_compile, the linker can choose to dump the bitcode
>> before running lto_codegen_compile_optimized.
>>
>> lto_api_version is added so ld64 can check for runtime-availability of the new
>> API.
>>
>> rdar://19565500
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