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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
Richard Smith 9e67b9922b P0145R3 (C++17 evaluation order tweaks): consistently emit the LHS of array 
subscripting before the RHS, regardless of which is the base and which is the
index.

llvm-svn: 282453
 2016-09-26 23:49:47 +00:00
David Blaikie bdf40a62a7 Test case updates for explicit type parameter to the gep operator 
llvm-svn: 232187
 2015-03-13 18:21:46 +00:00
David Blaikie a953f2825b Update Clang tests to handle explicitly typed load changes in LLVM. 
llvm-svn: 230795
 2015-02-27 21:19:58 +00:00
David Blaikie 218b783192 Update Clang tests to handle explicitly typed gep changes in LLVM. 
llvm-svn: 230783
 2015-02-27 19:18:17 +00:00
Reid Kleckner 6d829bdbef Fix brace init of unions with unnamed struct members 
The check for unnamed members was intended to skip unnamed bitfields,
but it ended up skipping unnamed structs. This lead to an assertion in
IRGen.

llvm-svn: 221818
 2014-11-12 21:30:23 +00:00
Richard Smith 454a7cdfb3 Implement DR990 and DR1070. Aggregate initialization initializes uninitialized 
elements from {}, rather than value-initializing them. This permits calling an
initializer-list constructor or constructing a std::initializer_list object.
(It would also permit initializing a const reference or rvalue reference if
that weren't explicitly prohibited by other rules.)

llvm-svn: 210091
 2014-06-03 08:26:00 +00:00
Richard Smith 7525ff67f1 Implement C++1y constant initializer rules: in a constant initializer for an 
object x, x's subobjects can be constructed by constexpr constructor even if
they are of non-literal type, and can be read and written even though they're
not members of a constexpr object or temporary.

llvm-svn: 181506
 2013-05-09 07:14:00 +00:00
Richard Smith 852c9db72b C++1y: Allow aggregates to have default initializers. 
Add a CXXDefaultInitExpr, analogous to CXXDefaultArgExpr, and use it both in
CXXCtorInitializers and in InitListExprs to represent a default initializer.

There's an additional complication here: because the default initializer can
refer to the initialized object via its 'this' pointer, we need to make sure
that 'this' points to the right thing within the evaluation.

llvm-svn: 179958
 2013-04-20 22:23:05 +00:00