Commit Graph

5 Commits

Author SHA1 Message Date
Alina Sbirlea 36f57fbc66 Add runtime support for __cpu_model (__builtin_cpu_supports)
Summary:
    This aims to add support for __cpu_model and address Bug 25510. It uses
    the code from lib/Support/Host.cpp for cpu detection, and creates
    __cpu_model with that info.

    Tested on OSX and built on Linux as well (though libgcc is the default).
    The use of "asm" required -std=gnu99, hence the cmake change. Corrections
    on better addressing this are welcome.

    Previously reverted, up for review again to iron out outstanding issues.

Reviewers: llvm-commits, joerg, echristo, mehdi_amini

Subscribers: mehdi_amini

Differential Revision: http://reviews.llvm.org/D22181

llvm-svn: 275484
2016-07-14 22:02:35 +00:00
Alina Sbirlea 0efdda0956 Revert "Add runtime support for __cpu_model (__builtin_cpu_supports)"
This reverts commit r274873 until additional fixes are resolved.

llvm-svn: 274944
2016-07-08 22:22:43 +00:00
Alina Sbirlea 9ebebce2df Add runtime support for __cpu_model (__builtin_cpu_supports)
Summary:
This aims to add support for __cpu_model and address Bug 25510. It uses
the code from lib/Support/Host.cpp for cpu detection, and creates
__cpu_model with that info.

Tested on OSX, it builts successfully, but the current version does
*not* resolve Bug 25510. The __cpu_model symbol is present in the
library but it only gets loaded with -all_load. This patch will not land
until this issue is clarified.

Built on Linux as well (though libgcc is the default). The use of "asm"
required -std=gnu99, hence the cmake change. Corrections on better
addressing this are welcome.

Note: See additional comments on D20988 (committed as r271921).

Reviewers: llvm-commits, joerg, echristo, mehdi_amini

Subscribers: mehdi_amini

Differential revision: http://reviews.llvm.org/D21033

llvm-svn: 274873
2016-07-08 16:28:54 +00:00
Alina Sbirlea fb11f27253 Revert r274865-r274870
llvm-svn: 274872
2016-07-08 16:28:52 +00:00
Alina Sbirlea 7847598113 Add default initialization. Add unit test.
llvm-svn: 274867
2016-07-08 16:18:38 +00:00