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Author SHA1 Message Date
Fangrui Song dbc96b518b Revert "[CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition" 
This reverts commit 789a46f2d7.

Accidentally committed.
 2020-02-03 10:09:39 -08:00
Fangrui Song 789a46f2d7 [CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition 
Summary:
Clang -fpic defaults to -fno-semantic-interposition (GCC -fpic defaults
to -fsemantic-interposition).
Users need to specify -fsemantic-interposition to get semantic
interposition behavior.

Semantic interposition is currently a best-effort feature. There may
still be some cases where it is not handled well.

Reviewers: peter.smith, rnk, serge-sans-paille, sfertile, jfb, jdoerfert

Subscribers: dschuff, jyknight, dylanmckay, nemanjai, jvesely, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, arphaman, PkmX, jocewei, jsji, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73865
 2020-02-03 09:52:48 -08:00
Tim Northover c46827c7ed LLVM IR: Generate new-style byval-with-Type from Clang 
LLVM IR recently added a Type parameter to the byval Attribute, so that
when pointers become opaque and no longer have an element type the
information will still be present in IR.

For now the Type parameter is optional (which is why Clang didn't need
this change at the time), but it will become mandatory soon.

llvm-svn: 362652
 2019-06-05 21:12:14 +00:00
James Y Knight 7160857da3 Properly provide alignment of 'byval' arguments down to llvm. 
This is important in the case that the LLVM-inferred llvm-struct
alignment is not the same as the clang-known C-struct alignment.

Differential Revision: http://reviews.llvm.org/D12243

llvm-svn: 245719
 2015-08-21 18:19:06 +00:00
Eli Bendersky 95338a09c0 Pass aggregates on the stack without splitting in NVPTX. 
Following the NVVM IR specifications, arguments of aggregate type should be
passed on the stack without splitting (byval).

http://reviews.llvm.org/D6020

Patch by Jacques Pienaar.

llvm-svn: 220854
 2014-10-29 13:43:21 +00:00
Justin Holewinski f9329ff650 [NVPTX] Update ABI handling 
For PTX, we want the target to handle struct returns directly.

llvm-svn: 195268
 2013-11-20 20:35:34 +00:00