caf3390d44
Constant expression evaluation refactoring:
...
- Remodel Expr::EvaluateAsInt to behave like the other EvaluateAs* functions,
and add Expr::EvaluateKnownConstInt to capture the current fold-or-assert
behaviour.
- Factor out evaluation of bitfield bit widths.
- Fix a few places which would evaluate an expression twice: once to determine
whether it is a constant expression, then again to get the value.
llvm-svn: 141561
2011-10-10 18:28:20 +00:00
f937c023bf
Rename TagDecl::isDefinition -> isCompleteDefinition
...
for better self-documenting code, since the semantics
are subtly different from getDefinition().
llvm-svn: 141355
2011-10-07 06:10:15 +00:00
0710e551ef
Record layout requires not just a definition, but a complete
...
definition. Assert this. Change IR generation to not try to
aggressively emit the IR translation of a record during its
own definition. Fixes PR10912.
llvm-svn: 141350
2011-10-07 02:39:22 +00:00
096ed290a1
Driver & AST: Implement support for -fpack-struct and -fpack-struct= command
...
line options.
- <rdar://problem/10120602>, PR9631
llvm-svn: 141211
2011-10-05 21:04:55 +00:00
8a39a01a10
Fix doxygen comment.
...
llvm-svn: 141165
2011-10-05 06:00:51 +00:00
84d2d3a90e
Some changes to improve compatibility for MSVC-style C++ struct layout. Patch from r4start at gmail.com (with some minor modifications by me).
...
llvm-svn: 140623
2011-09-27 19:12:27 +00:00
fed48af3de
Don't emit -Wpadded warnings without a valid SourceLocation. This can happen when RecordLayoutBuilder is used by Codegen, not Sema.
...
llvm-svn: 139162
2011-09-06 19:40:45 +00:00
e8bbc12152
Extend the ASTContext constructor to delay the initialization of
...
builtin types (When requested). This is another step toward making
ASTUnit build the ASTContext as needed when loading an AST file,
rather than doing so after the fact. No actual functionality change (yet).
llvm-svn: 138985
2011-09-02 00:18:52 +00:00
e1a6a0e05c
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment.
...
This fixes cases where the anonymous bitfield is followed by a bitfield member.
E.g.,
struct t4
{
char foo;
long : 0;
char bar : 1;
};
rdar://9859156
llvm-svn: 136991
2011-08-05 22:38:04 +00:00
f01a7ddcd6
More whitespace and naming fixup. No functionality change.
...
llvm-svn: 136944
2011-08-04 23:34:15 +00:00
64b18eebc6
Fix style and remove obviously redundant code.
...
llvm-svn: 136907
2011-08-04 19:25:14 +00:00
a336c6f380
Additional comments and whitespace.
...
llvm-svn: 136892
2011-08-04 17:52:43 +00:00
18903ee2d3
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce
...
alignment. This fixes cases where the anonymous bitfield is followed by a
non-bitfield member. E.g.,
struct t4
{
int foo : 1;
long : 0;
char bar;
};
Part of rdar://9859156
llvm-svn: 136858
2011-08-04 01:21:14 +00:00
0e62c1cc0b
remove unneeded llvm:: namespace qualifiers on some core types now that LLVM.h imports
...
them into the clang namespace.
llvm-svn: 135852
2011-07-23 10:55:15 +00:00
a91768e569
Add a const overload for ObjCInterfaceDecl::all_declared_ivar_begin.
...
This was previously not-const only because it has to lazily construct a chain
of ivars the first time it is called (and after the chain is invalidated).
In practice, all the clients were just const_casting their const Decls;
all those now-unnecessary const_casts have been removed.
llvm-svn: 135741
2011-07-22 02:08:32 +00:00
b26d578b41
Eliminate most uses of ShallowCollectObjCIvars which requires
...
a vector for collection. Use iterators where needed instead.
// rdar://6817577
llvm-svn: 134015
2011-06-28 18:05:25 +00:00
300f55dcad
PR10120: Make CodeGenModule::getVTableLinkage use NamedDecl::getLinkage to determine whether the vtable should be externally visible, instead of a rough approximation of it which messes up with templates.
...
While I'm here, zap the other user of isInAnonymousNamespace outside of Decl.cpp.
llvm-svn: 132861
2011-06-10 21:53:06 +00:00
783243b3ca
Implenment #pack pragma and ms_struct attribute layout.
...
Concludes // radar://8823265.
llvm-svn: 131188
2011-05-11 16:58:31 +00:00
07ceb0a1a4
Support pack pragma and ms_struct attributes. // rdar://8823265
...
llvm-svn: 131142
2011-05-10 19:00:50 +00:00
7adbed6b4d
'long long' requires special treatment in ms_struct
...
structs (impacts 32-bit only though).
llvm-svn: 131103
2011-05-09 22:03:17 +00:00
307eace474
In ms_struct structs, Establish a new alignment for a
...
non-bitfield following a bitfield if size of their types differ.
llvm-svn: 131032
2011-05-06 22:42:22 +00:00
b7a2879677
Establish a new alignment for an ms_struct bitfield following
...
a non-bitfield if size of their types differ.
llvm-svn: 131023
2011-05-06 21:56:12 +00:00
84335f7c8e
More ms_struct bitfield stuff:
...
Adjacent bit fields are packed into the same 1-, 2-, or
4-byte allocation unit if the integral types are the same
size. // rdar://8823265.
llvm-svn: 130851
2011-05-04 18:51:37 +00:00
759e4a1add
Only the first zero-length bitfield decides alignment of
...
the followup data member in an ms_struct struct.
// rdar:// 8823265
llvm-svn: 130795
2011-05-03 22:07:14 +00:00
fc0fe6eb52
Finish off rules for z-length bitfields in ms_struct
...
structs. // rdar://8823265
llvm-svn: 130783
2011-05-03 20:21:04 +00:00
eb39741c0b
More rule enforcement of zero bitfields for ms_struct.
...
llvm-svn: 130696
2011-05-02 17:20:56 +00:00
595ec5d43c
Some refactoring of my ms_struct patch.
...
// rdar://8823265 related.
llvm-svn: 130311
2011-04-27 17:14:21 +00:00
bcb23a180b
With ms_struct attribut, Zero-length bitfields following
...
non-bitfield members are ignore. // rdar://8823265 wip
llvm-svn: 130257
2011-04-26 23:52:16 +00:00
022dbc1672
Simplify crash recovery cleanup registration.
...
llvm-svn: 128057
2011-03-22 01:15:19 +00:00
f75d089679
Recover memory from RecordLayoutBuilders during crashes.
...
llvm-svn: 127931
2011-03-19 01:00:36 +00:00
a1a2e8decb
Instead of round up sizes to '8', round them up to the alignment of the char
...
type.
llvm-svn: 127391
2011-03-10 02:00:35 +00:00
e73807538a
Round up the non-virtual size to the next char instead of rounding down.
...
llvm-svn: 127390
2011-03-10 01:53:59 +00:00
dbe37f38d0
Use CharUnits for TypeAlign variable in LayoutWideBitField(). No change in
...
functionality intended.
llvm-svn: 126730
2011-03-01 01:36:00 +00:00
aab635e67a
Change the return type of GetVirtualPointersSize() to CharUnits. No change
...
in functionality intended.
llvm-svn: 126727
2011-03-01 01:22:45 +00:00
1b4420ed42
Retry r126357. Use CharUnits for the Size and DataSize calculations when
...
they are known to be exact multiples of the width of the char type. Add a
test case to CodeGen/union.c that would have caught the problem with the
previous attempt. No change in functionality intended.
llvm-svn: 126628
2011-02-28 02:01:38 +00:00
30cdc7022b
Revert "Use CharUnits values for Size and DataSize outside of the bitfield
...
layout", it broke some GCC tests.
llvm-svn: 126386
2011-02-24 16:40:53 +00:00
8e74e79145
Use CharUnits values for Size and DataSize outside of the bitfield layout
...
methods, when they are known to be exact multiples of the width of the char
type.
llvm-svn: 126357
2011-02-24 02:12:14 +00:00
3c215f2fd1
Use Context.getCharWidth() in place of literal '8's in assertions.
...
llvm-svn: 126356
2011-02-24 01:33:05 +00:00
ecfc75529f
Make the Size and DataSize members more CharUnits-friendly by wrapping them
...
with getter and setter methods in both bit units and CharUnits. This will help
simplify some of the unit mismatch in the parts of the code where sizes are
known to be exact multiples of the width of the char type.
Assertions in the getters help guard against accidentally converting to
CharUnits when sizes are not exact multiples of the char width.
llvm-svn: 126354
2011-02-24 01:13:28 +00:00
6d90e8937c
Expand use of CharUnits in LayoutField(). No change in functionality
...
intended.
llvm-svn: 126066
2011-02-20 02:06:09 +00:00
85ef0431a7
Expand use of CharUnits for alignments further. No change in functionality
...
intended.
llvm-svn: 126034
2011-02-19 18:58:07 +00:00
02ced6fd19
Convert MaxFieldAlignment to CharUnits from bits. No change in functionality
...
intended.
llvm-svn: 125704
2011-02-17 01:49:42 +00:00
1300b3b357
Convert the UnpackedAlignment field to CharUnits from bits. No change in
...
functionality intended.
llvm-svn: 125643
2011-02-16 02:11:31 +00:00
4731d5b65a
Convert Alignment member to CharUnits from bits. No change in functionality
...
intended.
llvm-svn: 125641
2011-02-16 02:05:21 +00:00
af1c83fbe7
Convert NonVirtualSize to CharUnits from bits. No change in functionality
...
intended.
llvm-svn: 125639
2011-02-16 01:52:01 +00:00
a2d3dda041
Convert NonVirtualAlignment to CharUnits. No change in functionality
...
intended.
llvm-svn: 125638
2011-02-16 01:43:15 +00:00
7ad11e70b6
Convert RecordLayout::Alignment to CharUnits from bit units. No change in
...
functionality intended.
llvm-svn: 125549
2011-02-15 02:32:40 +00:00
d5090c16f8
Convert RecordLayout::DataSize to CharUnits from bits, eliminating two
...
unnecessary calls to RoundUpToAlignment. No changes to functionality
intended.
llvm-svn: 125356
2011-02-11 02:20:09 +00:00
b0fcc59e19
Add a helper function, ASTContext::toBits(), that converts sizes in
...
CharUnits to sizes in bits, and use it to tidy up the places where the
conversion was done explicitly.
llvm-svn: 125332
2011-02-11 01:54:29 +00:00
c8ae55050d
Convert RecordLayout::Size to CharUnits from bits. No changes to
...
functionality intended.
llvm-svn: 125156
2011-02-09 01:59:34 +00:00
bec0285d7f
Convert RecordLayout::NonVirtualAlign to CharUnits. No change in
...
functionality intended.
llvm-svn: 125069
2011-02-08 02:02:47 +00:00
09b2331cf7
For gcc compatibility, size of a class which is zero
...
but has non-empty data fields, such as array of zero length,
remains zero.
// rdar://8945175
llvm-svn: 124741
2011-02-02 19:36:18 +00:00
dbe3927026
Basic support for -mms-bitfields, from Carl Norum!
...
llvm-svn: 124661
2011-02-01 15:15:22 +00:00
316d6f69bc
Convert RecordLayout::NonVirtualSize from bit units to CharUnits.
...
llvm-svn: 124646
2011-02-01 01:52:10 +00:00
7c4026bea7
Remove private toCharUnits() helper method, replacing with calls to
...
ASTContext::toCharUnitsFromBits().
llvm-svn: 124092
2011-01-24 01:28:50 +00:00
86a7fcc19c
Replace calls to CharUnits::fromQuantity() with ones
...
ASTContext::toCharUnitsFromBits() when converting from bit sizes to char units.
llvm-svn: 123715
2011-01-18 01:56:16 +00:00
39c7980772
PR3558: mark "logically const" accessor methods in ASTContext as const,
...
and mark the fields they use as mutable. This allows us to remove a few
const_casts.
llvm-svn: 123314
2011-01-12 09:06:06 +00:00
7bcde197d7
Fix PR8796.
...
The problem was that we were asserting the we never added an empty class
to the same offset twice. This is not true for unions, where two members, empty
or not, can have the some offset.
llvm-svn: 122633
2010-12-29 23:02:58 +00:00
d62c9be4fc
Fix another unnecessary-struct-padding issue.
...
llvm-svn: 121352
2010-12-09 02:47:58 +00:00
8b54274fcf
Before determining the effect the alignment of base struct will have in the aligment of the sub-struct,
...
take into account if the sub-struct is packed and its maximum field alignment.
Fixes rdar://8745206
llvm-svn: 121335
2010-12-09 00:35:20 +00:00
60a6263ee8
Move isNearlyEmpty out into the ASTContext so it can be called from CodeGen as well.
...
llvm-svn: 120137
2010-11-25 01:51:53 +00:00
7f95cd1817
Rename RecordLayout::getPrimaryBaseWasVirtual to isPrimaryBaseVirtual.
...
llvm-svn: 120133
2010-11-24 23:12:57 +00:00
5adde29d86
Use the newly added function in ASTRecordLayoutBuilder.
...
llvm-svn: 120131
2010-11-24 22:55:48 +00:00
d004064864
Refactoring of Diagnostic class.
...
-Move the stuff of Diagnostic related to creating/querying diagnostic IDs into a new DiagnosticIDs class.
-DiagnosticIDs can be shared among multiple Diagnostics for multiple translation units.
-The rest of the state in Diagnostic object is considered related and tied to one translation unit.
-Have Diagnostic point to the SourceManager that is related with. Diagnostic can now accept just a
SourceLocation instead of a FullSourceLoc.
-Reflect the changes to various interfaces.
llvm-svn: 119730
2010-11-18 20:06:41 +00:00
09814d3f3a
Don't update empty field subobjects for bitfields. Fixes PR8519.
...
llvm-svn: 117921
2010-11-01 15:14:51 +00:00
0a14ee9ed8
Get rid of more calls to getBaseClassOffsetInBits.
...
llvm-svn: 117883
2010-11-01 00:21:58 +00:00
3f01871647
Port over a couple of getVBaseClassOffsetInBits call sites to use getVBaseClassOffset instead.
...
llvm-svn: 117882
2010-10-31 23:45:59 +00:00
fd88a6160d
Rename getBaseClassOffset to getBaseClassOffsetInBits and introduce a getBaseClassOffset which returns the offset in CharUnits. Do the same thing for getVBaseClassOffset.
...
llvm-svn: 117881
2010-10-31 23:22:37 +00:00
a2f8e41a0a
Start converting over the RecordLayoutBuilder next.
...
llvm-svn: 117878
2010-10-31 22:20:42 +00:00
28466ab8f4
EmptyObjectMap now uses CharUnits wherever possible.
...
llvm-svn: 117877
2010-10-31 22:13:23 +00:00
233e272775
More CharUnits conversion.
...
llvm-svn: 117875
2010-10-31 21:54:55 +00:00
725190ff3f
More CharUnits conversion.
...
llvm-svn: 117874
2010-10-31 21:39:24 +00:00
f8f756d1d5
Use CharUnits in the EmptyClassOffsets map.
...
llvm-svn: 117873
2010-10-31 21:22:43 +00:00
22f5720c27
Baby steps towards using only CharUnits for base class offsets in ASTRecordLayout. Start by storing the offsets in CharUnits in the ASTRecordLayout object.
...
llvm-svn: 117869
2010-10-31 21:01:46 +00:00
2fc373e155
Move classes into anonymous namespaces.
...
llvm-svn: 117104
2010-10-22 16:33:16 +00:00
6843141d39
Store in PCH the key function of C++ class to avoid deserializing the complete declaration context in order to compute it.
...
Progress for rdar://7260160.
llvm-svn: 116508
2010-10-14 20:14:38 +00:00
8c64bbe032
Embrace C++ ABI 5.2.6 and consider that template instantiations don't have key functions (same as GCC).
...
llvm-svn: 116391
2010-10-13 02:39:41 +00:00
ca0d0cd3b9
Implement -Wpadded and -Wpacked.
...
-Wpadded warns when undesired padding is introduced in a struct. (rdar://7469556)
-Wpacked warns if a struct is given the packed attribute, but the packed attribute has no effect
on the layout or the size of the struct. Such structs may be mis-aligned for little benefit.
The warnings are emitted at the point where layout is calculated, that is at RecordLayoutBuilder.
To avoid calculating the layouts of all structs regardless of whether they are needed or not,
I let the layouts be lazily constructed when needed. This has the disadvantage that the above warnings
will be emitted only when they are used for IR gen, and not e.g with -fsyntax-only:
$ cat t.c
struct S {
char c;
int i;
};
void f(struct S* s) {}
$ clang -fsyntax-only -Wpadded t.c
$ clang -c -Wpadded t.c -o t.o
t.c:3:7: warning: padding struct 'struct S' with 3 bytes to align 'i' [-Wpadded]
int i;
^
1 warning generated.
This is a good tradeoff between providing the warnings and not calculating layouts for all
structs in case the user has enabled a couple of rarely used warnings.
llvm-svn: 114544
2010-09-22 14:32:24 +00:00
3c6cd17c8a
Use a smart pointer instead of delete.
...
llvm-svn: 112005
2010-08-25 00:32:14 +00:00
76c0cb493f
Add a virtual destructor to the base of another class hierarchy with virtual
...
methods.
llvm-svn: 111804
2010-08-23 08:37:21 +00:00
6bcb07ad71
Add some enum goodness as requested by Chris. Now instead of storing the
...
active C++ ABI as a raw string, we store it as an enum. This should improve
performance somewhat.
And yes, this time, I started from a clean build directory, and
all the tests passed. :)
llvm-svn: 111507
2010-08-19 02:18:14 +00:00
1ed0182413
Restore the build
...
llvm-svn: 111498
2010-08-19 01:21:57 +00:00
c2c576a9e7
Add a special RecordLayoutBuilder for the Microsoft C++ ABI.
...
All it does right now is add space for two vtable pointers instead of one
when a class has both virtual methods and virtual bases. This is a requirement
of the Microsoft ABI, since it has separate vtables for methods and bases. Other
stuff will come up over time, but we'll cross those bridges when we get to
them.
llvm-svn: 111493
2010-08-19 00:55:19 +00:00
dcfba7b35b
Generate Attr subclasses with TableGen.
...
Now all classes derived from Attr are generated from TableGen.
Additionally, Attr* is no longer its own linked list; SmallVectors or
Attr* are used. The accompanying LLVM commit contains the updates to
TableGen necessary for this.
Some other notes about newly-generated attribute classes:
- The constructor arguments are a SourceLocation and a Context&,
followed by the attributes arguments in the order that they were
defined in Attr.td
- Every argument in Attr.td has an appropriate accessor named getFoo,
and there are sometimes a few extra ones (such as to get the length
of a variadic argument).
Additionally, specific_attr_iterator has been introduced, which will
iterate over an AttrVec, but only over attributes of a certain type. It
can be accessed through either Decl::specific_attr_begin/end or
the global functions of the same name.
llvm-svn: 111455
2010-08-18 23:23:40 +00:00
56df97761d
StringRef'ication of lots stuff, patch by Peter Davies!
...
llvm-svn: 111314
2010-08-17 22:39:59 +00:00
499e6e49e7
Remove ATTRIBUTE_UNUSED from the common pattern of disallowing copying.
...
llvm-svn: 111101
2010-08-15 10:17:39 +00:00
0a33cb62a6
Add ATTRIBUTE_UNUSED to methods not supposed to be used.
...
llvm-svn: 111087
2010-08-15 01:15:27 +00:00
f35e76552f
Sema: Fix a subtle i64 -> i32 truncation which broke layout of large structures
...
with bit-fields.
llvm-svn: 107185
2010-06-29 18:34:35 +00:00
bb219e01a6
Delete assert in ComputeKeyFunction. The function runs fine without it, since
...
there's an explicit guard on isPolymorphic, and virtual bases don't affect the
key function calculation. This allows people to call
ASTContext::getKeyFunction on arbitrary classes.
llvm-svn: 107143
2010-06-29 15:27:35 +00:00
cc59cc5d80
Do the same short-circuit optimization when laying out bases.
...
llvm-svn: 105920
2010-06-13 18:00:18 +00:00
ae111dc821
Implement part of the EmptySubobjectMap optimization described in PR6998. We still need to do this for bases.
...
llvm-svn: 105919
2010-06-13 17:49:16 +00:00
446872069f
Correctly handle fields with virtual bases containing empty subobjects.
...
llvm-svn: 105628
2010-06-08 19:09:24 +00:00
45c1d2898e
When checking whether we can place a base subobject at an offset, we don't need to go past the highest offset that's known to contain an empty base subobject.
...
llvm-svn: 105611
2010-06-08 16:20:35 +00:00
cc5de097a6
Minor cleanups to the empty subobject map.
...
llvm-svn: 105608
2010-06-08 15:56:03 +00:00
7498b32117
And now for the best part: Removing the old code.
...
llvm-svn: 105162
2010-05-30 06:56:46 +00:00
b1fcdd063c
Turn on the new empty base subobject tracking code. It's a bit faster than the previous code. However, it still has quadratic performance, something which I intend to fix shortly in a subsequent patch.
...
llvm-svn: 105161
2010-05-30 06:52:33 +00:00
a7774a685d
Cleanup.
...
llvm-svn: 105114
2010-05-29 21:10:24 +00:00
a60b86a3fa
Make EmptySubobjectMap::CanPlaceBaseAtOffset take a BaseSubobjectInfo as well.
...
llvm-svn: 105113
2010-05-29 20:49:49 +00:00
d7f3fcf248
Change RecordLayoutBuilder::LayoutBase to take a BaseSubobjectInfo. No functionality change.
...
llvm-svn: 105112
2010-05-29 20:47:33 +00:00
6b0d914ad0
Rework the way virtual primary bases are added when laying out classes. Instead of doing it as a separate step, we now use the BaseSubobjectInfo and use it when laying out the bases. This fixes a bug where we would either not add a primary virtual base at all, or add it at the wrong offset.
...
llvm-svn: 105110
2010-05-29 19:44:50 +00:00
d6ff5d7787
Change LayoutVirtualBase to also take a BaseSubobjectInfo.
...
llvm-svn: 105104
2010-05-29 17:48:36 +00:00
bb0e6787b0
Change RecordLayoutBuilder::LayoutNonVirtualBase to take a BaseSubobjectInfo. No functionality change.
...
llvm-svn: 105103
2010-05-29 17:42:25 +00:00
e3c24c7033
Move computing the base subobject info for a class into the RecordLayoutBuilder because we're going to need it to be able to correctly add offsets for primary virtual bases.
...
llvm-svn: 105102
2010-05-29 17:35:14 +00:00
a7f3cdb0f2
Rename BaseInfo to BaseSubobjectInfo.
...
llvm-svn: 105007
2010-05-28 21:24:37 +00:00
056818f8a2
Move BaseInfo outside of the EmptySubobject class.
...
llvm-svn: 105002
2010-05-28 21:13:31 +00:00
db319761e7
More work on the empty subobject map. This code is not yet used.
...
llvm-svn: 104861
2010-05-27 18:20:57 +00:00
6da1098b4b
Sema: Add initial support for '#pragma options align=mac68k'.
...
- Docs are fairly sketchy, if someone wants to pore through gcc to look for
holes I'd appreciate any failing test cases!
llvm-svn: 104809
2010-05-27 05:45:51 +00:00
439edd1aea
More work on the new empty subobject map.
...
llvm-svn: 104808
2010-05-27 05:41:06 +00:00
592a85c137
Strip trailing whitespace.
...
llvm-svn: 104801
2010-05-27 02:25:46 +00:00
401304462a
AST: Rename PragmaPackAttr to MaxFieldAlignmentAttr, which is more accurate.
...
llvm-svn: 104795
2010-05-27 01:12:46 +00:00
c121b4e59f
More work on the empty subobjects map.
...
llvm-svn: 104787
2010-05-27 00:07:01 +00:00
c5ca1f7799
Move ComputeEmptySubobjectSizes to EmptySubobjectMap.
...
llvm-svn: 104702
2010-05-26 15:54:25 +00:00
f58de11b61
Stub out the EmptySubobjectsMap class.
...
llvm-svn: 104701
2010-05-26 15:32:58 +00:00
ce7f77729a
Inline the RecordLayoutBuilder constructor.
...
llvm-svn: 104700
2010-05-26 15:20:08 +00:00
c28a6c9251
Add a Layout overload that takes a CXXRecordDecl.
...
llvm-svn: 104695
2010-05-26 15:10:00 +00:00
c7656cdf83
Move RecordLayoutBuilder into an anonymous namespace.
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llvm-svn: 104693
2010-05-26 09:58:31 +00:00
c222620adf
Rename ASTRecordLayoutBuilder to RecordLayoutBuilder.
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llvm-svn: 104688
2010-05-26 05:58:59 +00:00
35a36eb78d
Move the ASTRecordLayoutBuilder class declaration into the .cpp file.
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llvm-svn: 104686
2010-05-26 05:41:04 +00:00
b48414f4cb
Fix thinko and remove another unused function.
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llvm-svn: 104683
2010-05-26 05:31:23 +00:00
1d1e4cf04d
Fix build.
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llvm-svn: 104682
2010-05-26 05:25:15 +00:00
d20e7cd3c6
No need to use the PrimaryBaseInfo struct in the builder.
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llvm-svn: 104681
2010-05-26 05:20:58 +00:00
87209bb54b
Remove FIXME.
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llvm-svn: 104674
2010-05-26 05:11:02 +00:00
d295486012
Fold the other Layout overload into its sole call site.
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llvm-svn: 104673
2010-05-26 05:10:47 +00:00
6ed3a9a494
Fold the ASTRecordLayoutBuilder::ComputeLayout overload that takes an ObjCInterfaceDecl pointer into its only callsite.
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llvm-svn: 104672
2010-05-26 05:04:25 +00:00
df291d8d8b
Move the relevant ASTContext member functions that deal with ASTRecordLayoutBuilder into RecordLayoutBuilder.cpp. This matches the way we interact with other builder classes (CGRecordLayoutBuilder, VTableBuilder and VTTBuilder) and it also allows for making ASTRecordLayoutBuilder a private class without a header file.
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llvm-svn: 104671
2010-05-26 04:56:53 +00:00
5773205a8d
When recording empty subobjects we should always look at the primary virtual base.
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llvm-svn: 104464
2010-05-23 18:14:24 +00:00
5f1a1704a2
Add an UpdateVBases parameter to UpdateEmptyClassOffsets. Not used just yet.
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llvm-svn: 103403
2010-05-10 15:28:59 +00:00
d626cb74d1
More work on handling empty classes.
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llvm-svn: 103402
2010-05-10 15:26:14 +00:00
82828a31f6
Cleanup.
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llvm-svn: 103370
2010-05-09 05:03:38 +00:00
15837f8f63
Actually compute the empty subobject sizes. No functionality change yet.
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llvm-svn: 103363
2010-05-08 23:06:26 +00:00
2357bfd9d0
Add a SizeOfLargestEmptySubobject member to ASTRecordLayout. For C++ classes this will hold the largest empty subobject or 0 if the class doesn't have any empty subobjects.
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llvm-svn: 103359
2010-05-08 22:35:05 +00:00
ccabe48235
AST: Dump ASTRecordLayout objects when they are created with -fdump-record-layouts.
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llvm-svn: 101815
2010-04-19 20:44:53 +00:00
145f3f1e83
Fix -Wcast-qual warnings.
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llvm-svn: 101786
2010-04-19 16:39:44 +00:00
aad5fa85d0
If a wide bit-field is inside a union its offset should always be 0.
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llvm-svn: 101668
2010-04-17 20:21:41 +00:00
b11416d061
Add raw_ostream operators to NamedDecl for convenience. Switch over all users of getNameAsString on a stream.
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The next step is to print the name directly into the stream, avoiding a temporary std::string copy.
llvm-svn: 101632
2010-04-17 09:33:03 +00:00
d9abbe56a5
Remove printfs.
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llvm-svn: 101470
2010-04-16 15:59:41 +00:00
5723516ce9
More work on wide bit-fields, WIP.
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llvm-svn: 101467
2010-04-16 15:57:11 +00:00
5efc56e36b
Rename the ASTContext member 'Context'.
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llvm-svn: 101462
2010-04-16 15:07:51 +00:00
ea7b18298e
Split adding the primary virtual base offsets out into a separate pass. This fixes a bug where we would lay out virtual bases in the wrong order.
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llvm-svn: 101373
2010-04-15 16:12:58 +00:00
1da6511b99
Tweak spelling (Bitfield -> BitField)
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llvm-svn: 101369
2010-04-15 15:06:18 +00:00
3d9289c736
Add TargetInfo::useBitfieldTypeAlignment().
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- Used to determine whether the alignment of the type in a bit-field is
respected when laying out structures. The default is true, targets can
override this as needed.
- This is designed to correspond to the PCC_BITFIELD_TYPE_MATTERS macro in
gcc. The AST/Sema implementation only affects one line, unless I have
forgotten something. I'd appreciate further review.
- IRgen still needs to be updated to fully support this (which is effectively
PR5591).
llvm-svn: 101356
2010-04-15 06:18:39 +00:00
fe53aaef51
Remove unnecessary cast.
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llvm-svn: 101176
2010-04-13 20:52:05 +00:00
7a148f7141
Fix another vbase layout bug.
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llvm-svn: 100952
2010-04-10 21:35:33 +00:00
5b441d73b7
Add a simple debug-only verification pass to the record layout builder.
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llvm-svn: 100951
2010-04-10 21:24:48 +00:00
291279e3a6
Simplify the virtual base layout code and fix a bug where we wouldn't store the offset for a virtual base.
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llvm-svn: 100940
2010-04-10 18:42:27 +00:00
aa423afffc
AST: Move C++ record layout dumping to ASTContext::DumpRecordLayout.
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llvm-svn: 100746
2010-04-08 02:59:49 +00:00
fe9009635d
More record layout builder cleanup and simplification.
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llvm-svn: 98238
2010-03-11 05:42:17 +00:00
de710c9125
Get rid of the PrimaryBase parameter from LayoutVirtualBases.
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llvm-svn: 98233
2010-03-11 04:33:54 +00:00
f7b7a1e781
More cleanup towards fixing the real bug.
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llvm-svn: 98232
2010-03-11 04:24:02 +00:00
6a84889d3f
Replace the class offset vectors in RecordLayoutBuilder with maps instead so we'll have faster lookup and so we can detect duplicates.
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llvm-svn: 98231
2010-03-11 04:10:39 +00:00
f2fa75bdbb
More cleanup.
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llvm-svn: 98230
2010-03-11 03:39:12 +00:00
c4c00ec41b
More record layout builder cleanup.
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llvm-svn: 98229
2010-03-11 02:41:30 +00:00
aa87b4eab1
Remove the IndirectPrimary parameter in LayoutVirtualBases; it's already there as a member variable.
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llvm-svn: 98211
2010-03-11 00:21:21 +00:00
8630b5b09b
More cleanup and simplification of the record layout builder.
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llvm-svn: 98208
2010-03-11 00:15:35 +00:00
0d0b588fb2
Get rid of the LayoutBaseNonVirtually; it was used to lay out a base either as a non-virtual base or a virtual base.
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llvm-svn: 98198
2010-03-10 22:26:24 +00:00
09ffa32b92
More shuffling.
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llvm-svn: 98197
2010-03-10 22:21:28 +00:00
f08e681ba8
Cleanups, no functionality change yet.
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llvm-svn: 98196
2010-03-10 22:16:06 +00:00
c3015a914f
Allocate ASTRecordLayout objects using the allocator associated with ASTContext.
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This allows them to be allocated using a BumpPtrAllocated
in the common case.
llvm-svn: 97978
2010-03-08 20:56:29 +00:00
aef662206b
Patch removes IVars list from ObjCInterfaceDecl and
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instead relies on their DeclContext for iteration, etc.
llvm-svn: 96638
2010-02-19 00:31:17 +00:00
ec345b7ecb
Simplify code. If we can reach here, the base must be virtual.
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llvm-svn: 96211
2010-02-15 04:28:35 +00:00
0a2754ed8a
Be sure to select primary bases among the nearly empties in preorder,
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not just among the direct bases. Before we where missing nearly
empties that were bases of virtual base classes.
llvm-svn: 94208
2010-01-22 20:27:17 +00:00
a318efd1f2
Improve key-function computation for templates. In particular:
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- All classes can have a key function; templates don't change that.
non-template classes when computing the key function.
- We always mark all of the virtual member functions of class
template instantiations.
- The vtable for an instantiation of a class template has weak
linkage.
We could probably use available_externally linkage for vtables of
classes instantiated by explicit instantiation declarations (extern
templates), but GCC doesn't do this and I'm not 100% that the ABI
permits it.
llvm-svn: 92753
2010-01-05 19:06:31 +00:00
f2c79b6b9c
Misc key function fixes.
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llvm-svn: 90831
2009-12-08 03:56:49 +00:00
8e0317bf05
Instantiated or specialized class templates never have a key function. This (and the previous check-in) fixes PR5557.
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llvm-svn: 90753
2009-12-07 08:29:39 +00:00
5ebf8b44e9
Move key functions to a separate map.
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llvm-svn: 90745
2009-12-07 04:35:11 +00:00
71a26d8f82
Move helper onto CXXMethodDecl.
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llvm-svn: 90716
2009-12-06 20:50:05 +00:00
0846d52f70
Tweak "key function" rules so that they work for templates with virtual
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inline functions.
llvm-svn: 90645
2009-12-05 04:55:55 +00:00
f98849eb8a
In Sema, whenever we think that a function is going to cause a vtable to be generated, we mark any virtual implicit member functions as referenced.
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llvm-svn: 90327
2009-12-02 17:15:43 +00:00
b1d3f7c909
Have ASTRecordLayout keep track of the key function, in preparation of fixing a synthetic ctor/dtor bug.
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llvm-svn: 90168
2009-11-30 23:41:22 +00:00
a30c0d3ace
Use a PointerIntPair for the PrimaryBaseInfo. Yay for clever LLVM data structures!
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llvm-svn: 90020
2009-11-27 22:14:40 +00:00
03ff379911
Add a new PrimaryBaseInfo struct that combines the record decl of a primary base with whether it's virtual or not.
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llvm-svn: 90018
2009-11-27 22:05:05 +00:00
ba958400a2
When laying out bitfields, make sure that the data size is always aligned to a byte. This fixes PR5580.
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llvm-svn: 89611
2009-11-22 19:13:51 +00:00
072094407d
Move bit-field layout out into a separate function. No functionality change.
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llvm-svn: 89604
2009-11-22 17:37:31 +00:00
96d5c76498
Added rudimentary C++0x attribute support.
...
The following attributes are currently supported in C++0x attribute
lists (and in GNU ones as well):
- align() - semantics believed to be conformant to n3000, except for
redeclarations and what entities it may apply to
- final - semantics believed to be conformant to CWG issue 817's proposed
wording, except for redeclarations
- noreturn - semantics believed to be conformant to n3000, except for
redeclarations
- carries_dependency - currently ignored (this is an optimization hint)
llvm-svn: 89543
2009-11-21 08:43:09 +00:00
4e16d05dc4
Fixup spacing.
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llvm-svn: 86792
2009-11-11 02:49:00 +00:00
2b84dd39be
Refine layout for indirect virtual base classes.
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llvm-svn: 86116
2009-11-05 04:02:15 +00:00
1054faed32
Audit the code for places where it is assumed that every base specifier refers to a RecordType. Add assertions or conditions as appropriate. This fixes another crash in the Apache stdlib vector.
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llvm-svn: 85055
2009-10-25 17:03:50 +00:00
534b0639db
Address comment from Daniel.
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llvm-svn: 82865
2009-09-26 16:55:29 +00:00
47680d8040
Rename NextOffset to DataSize.
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llvm-svn: 82832
2009-09-26 01:34:51 +00:00
7f78d85be4
Start at NextOffset when laying out bases as well.
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llvm-svn: 82831
2009-09-26 01:29:10 +00:00
a6d95b5a3e
Use NextOffset when laying out a field.
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llvm-svn: 82828
2009-09-26 01:09:35 +00:00
d7d358a65e
Even more work on empty classes.
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llvm-svn: 82770
2009-09-25 15:39:00 +00:00
e1883100a3
Who would have thought that empty classes were so tricky? Handle cases where an empty virtual base class needs to be moved aside because it conflicts with the first field.
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llvm-svn: 82746
2009-09-25 01:54:38 +00:00
4bf82141e7
Handle array fields that contain empty structs.
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llvm-svn: 82744
2009-09-25 01:23:32 +00:00
6f95c705ea
More work on empty classes.
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llvm-svn: 82736
2009-09-25 00:02:51 +00:00
bb66bc8e84
More improvements with laying out empty bases.
...
llvm-svn: 82682
2009-09-24 05:21:31 +00:00
f24b18fb06
More work on empty classes.
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llvm-svn: 82679
2009-09-24 03:22:10 +00:00
6522b05db7
Scaffolding for supporting empty bases/fields.
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llvm-svn: 82678
2009-09-24 03:13:30 +00:00
55640546e4
If we already set a primary base, don't set it to the first nearly empty base class.
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llvm-svn: 82563
2009-09-22 19:16:59 +00:00
96cff1fc10
Explicitly initialize the PrimaryBase and PrimaryBaseWasVirtual members.
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llvm-svn: 82560
2009-09-22 18:21:58 +00:00
865715442e
Yes.
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llvm-svn: 82559
2009-09-22 17:38:02 +00:00
8143069417
Store the set of indirect primary bases directly in the record layout builder.
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llvm-svn: 82513
2009-09-22 03:02:06 +00:00
d6020c321a
Record layout builder cleanup.
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llvm-svn: 82502
2009-09-22 00:04:45 +00:00
93b6d5e85e
Temporary band-aid for handling empty classes somewhat better.
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llvm-svn: 82124
2009-09-17 04:42:56 +00:00
11289f4280
Remove tabs, and whitespace cleanups.
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llvm-svn: 81346
2009-09-09 15:08:12 +00:00
996576f3aa
Refine vbase offset calculations. WIP.
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llvm-svn: 79198
2009-08-16 19:04:13 +00:00
22ea1f8a30
Cleanups and fixups for calculating the virtual base offsets. WIP.
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llvm-svn: 79156
2009-08-16 01:46:26 +00:00
bcf756cbac
Deconflate virtual base offsets from non-virtual base offsets.
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Deconflate a virtual base primary from a non-virtual base.
llvm-svn: 78971
2009-08-14 01:44:03 +00:00
590a7c780c
We can't avoid doing the work to find all the indirect primary virtual
...
base classes as we'll need that to layout the virtual bases...
llvm-svn: 78954
2009-08-13 23:26:06 +00:00
c2f591b1e6
Refine vtable layout for virtual bases and keep better track of
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primaries. WIP.
llvm-svn: 78950
2009-08-13 22:53:07 +00:00
Richard Smith