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180 Commits

Author SHA1 Message Date
John McCall
cc04e9f6b9 Re-teach IR gen to perform GC moves on rvalues resulting from various ObjC 
expressions.  Essentially, GC breaks a certain form of the return-value
optimization.

llvm-svn: 104454
 2010-05-22 22:13:32 +00:00
Anders Carlsson
c0964b60e5 Re-land the fix for PR7139. 
llvm-svn: 104446
 2010-05-22 17:35:42 +00:00
Douglas Gregor
aae38d6610 Improve our handling of reference binding for subobjects of 
temporaries. There are actually several interrelated fixes here:

  - When converting an object to a base class, it's only an lvalue
  cast when the original object was an lvalue and we aren't casting
  pointer-to-derived to pointer-to-base. Previously, we were
  misclassifying derived-to-base casts of class rvalues as lvalues,
  causing various oddities (including problems with reference binding
  not extending the lifetimes of some temporaries).

  - Teach the code for emitting a reference binding how to look
  through no-op casts and parentheses directly, since
  Expr::IgnoreParenNoOpCasts is just plain wrong for this. Also, make
  sure that we properly look through multiple levels of indirection
  from the temporary object, but destroy the actual temporary object;
  this fixes the reference-binding issue mentioned above.

  - Teach Objective-C message sends to bind the result as a temporary
    when needed. This is actually John's change, but it triggered the
    reference-binding problem above, so it's included here. Now John
    can actually test his return-slot improvements.

llvm-svn: 104434
 2010-05-22 05:17:18 +00:00
John McCall
78a151138a Push a return-value slot throughout ObjC message-send codegen. Will be 
critical for ObjC++ correctness;  hard to test independently of various
required Sema changes, though.

llvm-svn: 104422
 2010-05-22 01:48:05 +00:00
Anders Carlsson
c866eb5ba9 Unbreak self-host. 
llvm-svn: 104390
 2010-05-21 22:17:48 +00:00
Anders Carlsson
da1641cd12 Rename CodeGenFunction::EmitMemSetToZero to EmitNullInitialization. Handle setting null data member pointers correctly. Fixes PR7139. 
llvm-svn: 104387
 2010-05-21 21:45:41 +00:00
Fariborz Jahanian
6855ba2c95 Copy construction of non-trivial properties must not 
be turned into a setter call (fixes radar 8008649).

llvm-svn: 104235
 2010-05-20 16:46:55 +00:00
Douglas Gregor
265b8b8de0 Picky, picky 
llvm-svn: 104230
 2010-05-20 15:48:29 +00:00
Douglas Gregor
c19108118d Fix a thinko 
llvm-svn: 104229
 2010-05-20 15:47:46 +00:00
Douglas Gregor
f22101a059 Assert that we do not try to memcpy a non-POD class type in C++. This 
particular issue was the cause of the Boost.Interprocess failures, and
in general will lead to horrendous, hard-to-diagnose miscompiles. The
assertion itself has survives self-host and a full Boost build, so we
are close to eradicating this problem in C++.

Note that the assertion is *not* turned on for Objective-C++, where we
still have problems with introducing memcpy's of non-POD class
types. That part of the assertion will go away as soon as we fix the
known issues in Objective-C++.

llvm-svn: 104227
 2010-05-20 15:39:01 +00:00
Douglas Gregor
1c073f47da Emit an lvalue dynamic_cast even if the result is not used. Another 
part (or possibly all) of PR7132.

llvm-svn: 103810
 2010-05-14 21:31:02 +00:00
Anders Carlsson
a1bc38d53e Remove an unused function. 
llvm-svn: 103793
 2010-05-14 19:48:27 +00:00
Douglas Gregor
aee1f51485 If we're generating code to create a pointer-to-member function 
aggregate and the result of the aggregate is unused, bail out
early. Fixes PR7027.

llvm-svn: 102942
 2010-05-03 20:00:27 +00:00
Anders Carlsson
3572d44190 When computing the address of a virtual member function pointer, use the pointer width instead of hardcoding for 64-bit. 
llvm-svn: 102921
 2010-05-03 16:05:06 +00:00
Anders Carlsson
16e94af67c Don't copy or initialize empty classes. Fixes PR7012. 
llvm-svn: 102891
 2010-05-03 01:20:20 +00:00
Anders Carlsson
795213efde Get rid of the old GetNonVirtualBaseClassOffset and change all call sites to use the new version. 
llvm-svn: 102274
 2010-04-24 21:27:51 +00:00
Anders Carlsson
11e5140db9 Vtable -> VTable renames across the board. 
llvm-svn: 101666
 2010-04-17 20:15:18 +00:00
Mon P Wang
cc2ab0cdc9 Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. 
llvm-svn: 100305
 2010-04-04 03:10:52 +00:00
Mon P Wang
f7f3bff646 Revert r100193 since it causes failures in objc in clang 
llvm-svn: 100200
 2010-04-02 18:43:42 +00:00
Mon P Wang
4b82a88764 Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. 
llvm-svn: 100193
 2010-04-02 18:04:30 +00:00
Bob Wilson
adb58e32cc Revert Mon Ping's 99930 due to broken llvm-gcc buildbots. 
llvm-svn: 99949
 2010-03-30 22:28:46 +00:00
Mon P Wang
231e99743a Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset 
llvm-svn: 99930
 2010-03-30 21:02:45 +00:00
Anders Carlsson
a864caff8c Rename CGVtableInfo to CodeGenVTables in preparation of adding another VTableInfo class. 
llvm-svn: 99250
 2010-03-23 04:11:45 +00:00
Rafael Espindola
46b7987f85 Fix PR6648 by not creating a temporary with the type of a 
CXXExprWithTemporaries.

Not emitting the expression as an aggregate might be the right thing to do,
but is orthogonal. Emitting it as an scalar expression will still try to
create a temporary for the incomplete type of the CXXExprWithTemporaries and
fail.

llvm-svn: 99134
 2010-03-21 17:11:05 +00:00
Chris Lattner
e18aaf2c4b add a codegen hack to work around an AST bug, allowing us to compile the 
code in PR6537.  This should be reverted when the ast bug is fixed.

llvm-svn: 97981
 2010-03-08 21:08:07 +00:00
Douglas Gregor
c934bc840c Perform overload resolution when static_cast'ing from a 
pointer-to-member-to-derived to a pointer-to-member-to-base. Fixes
PR6072.

llvm-svn: 97923
 2010-03-07 23:24:59 +00:00
Eli Friedman
d2c0de6b44 PR6386: Fix a recent regression in IRGen of cast-to-union constructs. 
llvm-svn: 96958
 2010-02-23 17:58:35 +00:00
Daniel Dunbar
a7566f163a IRgen: Add CreateMemTemp, for creating an temporary memory object for a particular type, and flood fill. - CreateMemTemp sets the alignment on the alloca correctly, which fixes a great many places in IRgen where we were doing the wrong thing. 
- This fixes many many more places than the test case, but my feeling is we need to audit alignment systematically so I'm not inclined to try hard to test the individual fixes in this patch. If this bothers you, patches welcome!

PR6240.

llvm-svn: 95648
 2010-02-09 02:48:28 +00:00
Anders Carlsson
6d0e5bd8f3 Use the right type when taking the address of a non-virtual member function pointer. Fixes PR6258. 
llvm-svn: 95524
 2010-02-07 17:37:13 +00:00
Daniel Dunbar
d0bc7b9d13 IRgen: Factor out EmitAggExprToLValue. 
llvm-svn: 95416
 2010-02-05 19:38:31 +00:00
Anders Carlsson
ae612d22ac Rename StartConditionalBranch/FinishConditionalBranch to BeginConditionalBranch/EndConditionalBranch. 
llvm-svn: 95308
 2010-02-04 17:18:07 +00:00
Anders Carlsson
7914dad72d Calculate offset correctly when taking the address of a virtual member function. 
llvm-svn: 95305
 2010-02-04 16:38:05 +00:00
Anders Carlsson
66498388a7 Handle reference binding in aggregate initializers. Fixes another 47 tests. 
llvm-svn: 95235
 2010-02-03 19:13:55 +00:00
Anders Carlsson
9b92ef90f0 Add a band-aid fix for clang self-hosting. A better fix will follow shortly. 
llvm-svn: 95232
 2010-02-03 18:54:13 +00:00
Anders Carlsson
b247350ef7 More cleanup. 
llvm-svn: 95226
 2010-02-03 17:33:16 +00:00
Anders Carlsson
84673e200f Some class related cleanup. 
llvm-svn: 94938
 2010-01-31 01:36:53 +00:00
Anders Carlsson
5d8645b150 Simplify EmitLValueForField - we can get whether the field is part of a union or not from the FieldDecl (through its DeclContext). 
llvm-svn: 94798
 2010-01-29 05:05:36 +00:00
Anders Carlsson
a0b025e40f When emitting member function pointers, use the canonical decl if the member function is virtual. Fixes PR5940. 
llvm-svn: 92680
 2010-01-05 05:04:05 +00:00
Daniel Dunbar
d443c0a02a Revert r92431, this code isn't dead and broke the ntfs build. 
llvm-svn: 92493
 2010-01-04 18:47:06 +00:00
Eli Friedman
14e4005851 Delete impossible case. 
llvm-svn: 92431
 2010-01-02 23:28:56 +00:00
Eli Friedman
b8841af8bd Minor optimization; emit proper unsupported messages for a couple of cases. 
llvm-svn: 92153
 2009-12-25 06:17:05 +00:00
Anders Carlsson
1749083e2e Fill in the return value slot in CGExprAgg::VisitCallExpr. This takes us halfway towards fixing PR5824. 
llvm-svn: 92142
 2009-12-24 20:40:36 +00:00
Mike Stump
0da53228e6 Handle case when DestPtr is 0. 
llvm-svn: 91658
 2009-12-18 02:14:27 +00:00
Douglas Gregor
4f4b186215 When value-initializing a class with no user-defined constructors but 
with a non-trivial default constructor, zero-initialize the storage
and then call the default constructor. Fixes PR5800.

llvm-svn: 91548
 2009-12-16 18:50:27 +00:00
Anders Carlsson
18ada9856f Handle ImplicitValueInitExpr in AggExprEmitter. 
llvm-svn: 91519
 2009-12-16 06:57:54 +00:00
Mike Stump
f16b8c30d9 Add throw support. WIP. 
llvm-svn: 90982
 2009-12-09 19:24:08 +00:00
Eli Friedman
6d11ec8cb8 Update chunk of #if 0'ed code to remove fixed FIXME and make it compile. We 
probably want to do some sort of performance assessment before enabling it,
though.

llvm-svn: 90510
 2009-12-04 01:30:56 +00:00
Benjamin Kramer
337e3a5fea Remove remaining VISIBILITY_HIDDEN from anonymous namespaces. 
llvm-svn: 90044
 2009-11-28 19:45:26 +00:00
Eli Friedman
7eb0ccaa58 Add case for CK_DerivedToBaseMemberPointer cast kind to 
AggExprEmitter::VisitCastExpr.

llvm-svn: 89988
 2009-11-27 04:46:20 +00:00
Anders Carlsson
0a66c26191 Fix lifetime of conditional temporaries. Patch by Victor Zverovich! 
llvm-svn: 89467
 2009-11-20 17:27:56 +00:00