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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
Davide Italiano 8236b73dee [CodeGen] Update test after recent changes in llvm (r293846). 
llvm-svn: 293848
 2017-02-02 00:47:53 +00:00
Davide Italiano 0449607738 [CodeGen] Update test after recent changes in llvm (r293799). 
llvm-svn: 293810
 2017-02-01 20:43:28 +00:00
Artem Belevich 5d40ae3a46 Allow linking multiple bitcode files. 
Linking options for particular file depend on the option that specifies the file.
Currently there are two:

* -mlink-bitcode-file links in complete content of the specified file.
* -mlink-cuda-bitcode links in only the symbols needed by current TU.
   Linked symbols are internalized. This bitcode linking mode is used to
   link device-specific bitcode provided by CUDA.

Files are linked in order they are specified on command line.

-mlink-cuda-bitcode replaces -fcuda-uses-libdevice flag.

Differential Revision: http://reviews.llvm.org/D13913

llvm-svn: 251427
 2015-10-27 17:56:59 +00:00
Artem Belevich ed0577cc6d Fixed double-free in case of module loading error. 
GetOutputStream() owns the stream it returns pointer to and the
pointer should never be freed by us. When we fail to load and exit
early, unique_ptr still holds the pointer and frees it which leads to
compiler crash when CompilerInstance attempts to free it again.

Added regression test for failed bitcode linking.

Differential Revision: http://reviews.llvm.org/D9625

llvm-svn: 237159
 2015-05-12 17:44:15 +00:00
Rafael Espindola 5a1106f8fc Make this test a bit stricter by checking clang's output too. 
llvm-svn: 220604
 2014-10-25 01:51:19 +00:00
Stephen Lin 4362261b00 CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. 
llvm-svn: 188447
 2013-08-15 06:47:53 +00:00
Rafael Espindola 925213b0fa Add 'not' to commands that are expected to fail. 
This is at least good documentation, but also opens the possibility of
using pipefail.

llvm-svn: 185652
 2013-07-04 16:16:58 +00:00
Peter Collingbourne f1d76db466 Add support for lazily linking bitcode files (using a new 
-mlink-bitcode-file flag), and more generally llvm::Modules, before
running optimisations.

llvm-svn: 143314
 2011-10-30 17:30:44 +00:00