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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
Erich Keane a957ffbce3 Add default calling convention support for regcall. 
Added support for regcall as default calling convention. Also added code to
exclude main when applying default calling conventions.

Patch-By: eandrews

Differential Revision: https://reviews.llvm.org/D39210

llvm-svn: 317268
 2017-11-02 21:08:00 +00:00
Erich Keane 5759fa798b Correct behavior of fastcall when default CC is set. 
Fastcall doesn't support variadic function calls, so
setting the default calling convention to Fastcall would
result in incorrect code being emitted for these conditions.

This patch adds a 'variadic' test to the default calling conv
test, as well as fixes the behavior of fastcall.

llvm-svn: 316528
 2017-10-24 23:12:01 +00:00
Alexey Bataev a7547183ec Support for MSVS default calling convention options (/Gd, /Gz, /Gv, 
/Gr), by Alexander Makarov

Patch for bug #27711
Differential Revision: http://reviews.llvm.org/D20171

llvm-svn: 269891
 2016-05-18 09:06:38 +00:00