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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
Mehdi Amini 557c20a886 Remove compile time PreserveName in favor of a runtime cc1 -discard-value-names option 
Summary:
This flag is enabled by default in the driver when NDEBUG is set. It
is forwarded on the LLVMContext to discard all value names (but
GlobalValue) for performance purpose.

This an improved version of D18024

Reviewers: echristo, chandlerc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D18127

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 263394
 2016-03-13 21:05:23 +00:00
Daniel Sanders aa1b35590f [mips] Mark aggregate arguments passed in registers with the inreg attribute 
Summary:
This allows us to easily identify them in the backend which in turn allows us
to handle them correctly for big-endian targets (where they must be shifted
into the upper bits of the register).

Depends on D5961

Reviewers: atanasyan

Reviewed By: atanasyan

Subscribers: cfe-commits, theraven

Differential Revision: http://reviews.llvm.org/D5962

llvm-svn: 220566
 2014-10-24 15:30:16 +00:00
Daniel Sanders e5018b6c00 [mips] Mark aggregates returned in registers with the 'inreg' attribute. 
Summary:
This allows us to easily find them in the backend after the aggregates have
been lowered to other types. This is important on big-endian targets using
the N32/N64 ABI's since these ABI's must shift small structures into the
upper bits of the register.

Reviewers: atanasyan

Reviewed By: atanasyan

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5005

llvm-svn: 217160
 2014-09-04 15:05:39 +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 fc3fc0c936 The clang driver has a fairly fancy support for executing gcc instead of 
clang itself. This dates back to clang's early days and while it looks like
some of it is still used (for kext for example), other parts are probably dead.

Remove the -ccc-clang-archs option and associated code. I don't think there
is any remaining setup where clang doesn't support an architecture but it can
expect an working gcc cross compiler to be available.

A nice side effect is that tests no longer need to differentiate architectures
that are included in production builds of clang and those that are not.

llvm-svn: 165545
 2012-10-09 20:46:28 +00:00
Akira Hatanaka 8ab86cb344 Coerce byval aggregate arguments to integers whose size matches the integer 
register size of the target architecture.
 

llvm-svn: 156650
 2012-05-11 21:56:58 +00:00
Akira Hatanaka 4984f5dbbe Class objects passed by value follow the same rules as structure objects. 
Double fields of by-value class objects should be passed in floating point
registers.

llvm-svn: 150200
 2012-02-09 19:54:16 +00:00
Akira Hatanaka b6f7443c3c Fix bugs in function MipsABIInfo::returnAggregateInRegs. Functions returning 
class objects follow the same rules as those returning struct objects.

llvm-svn: 150196
 2012-02-09 18:49:26 +00:00