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198 Commits

Author SHA1 Message Date
Ted Kremenek 022dbc1672 Simplify crash recovery cleanup registration. 
llvm-svn: 128057
 2011-03-22 01:15:19 +00:00
Ted Kremenek f75d089679 Recover memory from RecordLayoutBuilders during crashes. 
llvm-svn: 127931
 2011-03-19 01:00:36 +00:00
Ken Dyck 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
Ken Dyck 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
Ken Dyck dbe37f38d0 Use CharUnits for TypeAlign variable in LayoutWideBitField(). No change in 
functionality intended.

llvm-svn: 126730
 2011-03-01 01:36:00 +00:00
Ken Dyck 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
Ken Dyck 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
Daniel Dunbar 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
Ken Dyck 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
Ken Dyck 3c215f2fd1 Use Context.getCharWidth() in place of literal '8's in assertions. 
llvm-svn: 126356
 2011-02-24 01:33:05 +00:00
Ken Dyck 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
Ken Dyck 6d90e8937c Expand use of CharUnits in LayoutField(). No change in functionality 
intended.

llvm-svn: 126066
 2011-02-20 02:06:09 +00:00
Ken Dyck 85ef0431a7 Expand use of CharUnits for alignments further. No change in functionality 
intended.

llvm-svn: 126034
 2011-02-19 18:58:07 +00:00
Ken Dyck 02ced6fd19 Convert MaxFieldAlignment to CharUnits from bits. No change in functionality 
intended.

llvm-svn: 125704
 2011-02-17 01:49:42 +00:00
Ken Dyck 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
Ken Dyck 4731d5b65a Convert Alignment member to CharUnits from bits. No change in functionality 
intended.

llvm-svn: 125641
 2011-02-16 02:05:21 +00:00
Ken Dyck af1c83fbe7 Convert NonVirtualSize to CharUnits from bits. No change in functionality 
intended.

llvm-svn: 125639
 2011-02-16 01:52:01 +00:00
Ken Dyck a2d3dda041 Convert NonVirtualAlignment to CharUnits. No change in functionality 
intended.

llvm-svn: 125638
 2011-02-16 01:43:15 +00:00
Ken Dyck 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
Ken Dyck 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
Ken Dyck 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
Ken Dyck c8ae55050d Convert RecordLayout::Size to CharUnits from bits. No changes to 
functionality intended.

llvm-svn: 125156
 2011-02-09 01:59:34 +00:00
Ken Dyck bec0285d7f Convert RecordLayout::NonVirtualAlign to CharUnits. No change in 
functionality intended.

llvm-svn: 125069
 2011-02-08 02:02:47 +00:00
Fariborz Jahanian 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
Douglas Gregor dbe3927026 Basic support for -mms-bitfields, from Carl Norum! 
llvm-svn: 124661
 2011-02-01 15:15:22 +00:00
Ken Dyck 316d6f69bc Convert RecordLayout::NonVirtualSize from bit units to CharUnits. 
llvm-svn: 124646
 2011-02-01 01:52:10 +00:00
Ken Dyck 7c4026bea7 Remove private toCharUnits() helper method, replacing with calls to 
ASTContext::toCharUnitsFromBits().

llvm-svn: 124092
 2011-01-24 01:28:50 +00:00
Ken Dyck 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
Jay Foad 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
Rafael Espindola 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
Argyrios Kyrtzidis d62c9be4fc Fix another unnecessary-struct-padding issue. 
llvm-svn: 121352
 2010-12-09 02:47:58 +00:00
Argyrios Kyrtzidis 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
Anders Carlsson 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
Anders Carlsson 7f95cd1817 Rename RecordLayout::getPrimaryBaseWasVirtual to isPrimaryBaseVirtual. 
llvm-svn: 120133
 2010-11-24 23:12:57 +00:00
Anders Carlsson 5adde29d86 Use the newly added function in ASTRecordLayoutBuilder. 
llvm-svn: 120131
 2010-11-24 22:55:48 +00:00
Argyrios Kyrtzidis 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
Anders Carlsson 09814d3f3a Don't update empty field subobjects for bitfields. Fixes PR8519. 
llvm-svn: 117921
 2010-11-01 15:14:51 +00:00
Anders Carlsson 0a14ee9ed8 Get rid of more calls to getBaseClassOffsetInBits. 
llvm-svn: 117883
 2010-11-01 00:21:58 +00:00
Anders Carlsson 3f01871647 Port over a couple of getVBaseClassOffsetInBits call sites to use getVBaseClassOffset instead. 
llvm-svn: 117882
 2010-10-31 23:45:59 +00:00
Anders Carlsson 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
Anders Carlsson a2f8e41a0a Start converting over the RecordLayoutBuilder next. 
llvm-svn: 117878
 2010-10-31 22:20:42 +00:00
Anders Carlsson 28466ab8f4 EmptyObjectMap now uses CharUnits wherever possible. 
llvm-svn: 117877
 2010-10-31 22:13:23 +00:00
Anders Carlsson 233e272775 More CharUnits conversion. 
llvm-svn: 117875
 2010-10-31 21:54:55 +00:00
Anders Carlsson 725190ff3f More CharUnits conversion. 
llvm-svn: 117874
 2010-10-31 21:39:24 +00:00
Anders Carlsson f8f756d1d5 Use CharUnits in the EmptyClassOffsets map. 
llvm-svn: 117873
 2010-10-31 21:22:43 +00:00
Anders Carlsson 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
Benjamin Kramer 2fc373e155 Move classes into anonymous namespaces. 
llvm-svn: 117104
 2010-10-22 16:33:16 +00:00
Argyrios Kyrtzidis 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
Argyrios Kyrtzidis 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
Argyrios Kyrtzidis 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