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104 Commits

Author SHA1 Message Date
Ken Dyck
345a6de9b4 Eliminate literal 8s from LayoutBitField(), converting variables to 
CharUnits or replacing the 8s with char align. No change in functionality
intended.

llvm-svn: 130106
 2011-04-24 16:40:29 +00:00
Ken Dyck
27337a8800 Convert AccessInfo::AccessAlignment to CharUnits. No change in functionality 
intended.

llvm-svn: 130087
 2011-04-24 10:13:17 +00:00
Ken Dyck
f76759c6fa Convert CGBitFieldInfo::FieldByteOffset to CharUnits. No change in 
functionality intended.

llvm-svn: 130085
 2011-04-24 10:04:59 +00:00
Anders Carlsson
fcaaa697ec When laying out bases in, always try the "base subobject" LLVM type. If it 
turns out that a field or base needs to be laid out in the tail padding of
the base, CGRecordLayoutBuilder::ResizeLastBaseFieldIfNecessary will convert
it to an array of i8.

I've audited the new test results to make sure that they are still valid. I've
also verified that we pass a self-host with this change.

This (finally) fixes PR5589!

llvm-svn: 129673
 2011-04-17 21:56:13 +00:00
Anders Carlsson
b6d31e7dcc Use a SmallVector for field types in CGRecordLayoutBuilder now that llvm::StructType::get takes an ArrayRef. 
llvm-svn: 129667
 2011-04-17 21:32:41 +00:00
Nick Lewycky
d2348d8d3f Fix typo in comment. 
llvm-svn: 128088
 2011-03-22 17:35:47 +00:00
John McCall
8a3c55567e A much-delayed response to Ken Dyck's review: make this somewhat more 
char-width agnostic.

llvm-svn: 126542
 2011-02-26 08:41:59 +00:00
Chris Lattner
fb59c7c7d8 improve support for big endian targets, fixing PR8171, patch 
by Heikki Kultala!

llvm-svn: 125784
 2011-02-17 22:09:58 +00:00
John McCall
4d9f14234f Refactor CGRecordLayoutBuilder to use CharUnits more consistently. 
llvm-svn: 125605
 2011-02-15 22:21:29 +00:00
John McCall
0217dfc2ba Perform zero-initialization of virtual base classes when emitting 
a zero constant for a complete class.  rdar://problem/8424975

To make this happen, track the field indexes for virtual bases
in the complete object.  I'm curious whether we might be better
off making CGRecordLayoutBuilder *much* more reliant on
ASTRecordLayout;  we're currently duplicating an awful lot of the ABI
layout logic.

llvm-svn: 125555
 2011-02-15 06:40:56 +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
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
89d9f360cd Drop the 'InBits' part from the name of RecordSizeInBits as the value is in 
character units.

llvm-svn: 125281
 2011-02-10 12:36:29 +00:00
Ken Dyck
f18bf0d2e1 Eliminate some signed-to-unsigned comparision warnings introduced in 
r125156.

llvm-svn: 125280
 2011-02-10 12:20:05 +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
Ken Dyck
316d6f69bc Convert RecordLayout::NonVirtualSize from bit units to CharUnits. 
llvm-svn: 124646
 2011-02-01 01:52:10 +00:00
Argyrios Kyrtzidis
648fcbef5b Fix another obscure corner layout case. 
llvm-svn: 121436
 2010-12-10 00:11:00 +00:00
Anders Carlsson
a518b2a5a1 Add a LayoutBase member function. No functionality change. 
llvm-svn: 120924
 2010-12-04 23:59:48 +00:00
Anders Carlsson
d74cad80b0 Replace calls to AppendBytes with calls to AppendPadding when the bytes appended are padding. 
llvm-svn: 120922
 2010-12-04 23:53:18 +00:00
John McCall
bcd38217f3 CGRecordLayoutBuilder does not need to be exported from this module. 
llvm-svn: 120489
 2010-11-30 23:17:27 +00:00
Anders Carlsson
acf877be12 Don't store the maximum alignment, we can trivially compute it. 
llvm-svn: 120268
 2010-11-28 23:06:23 +00:00
Anders Carlsson
a459adb2ff More work on laying out virtual bases. 
llvm-svn: 120257
 2010-11-28 19:18:44 +00:00
Anders Carlsson
1f95ee3016 Begin work on actually laying out virtual bases. 
llvm-svn: 120140
 2010-11-25 01:59:35 +00:00
Anders Carlsson
7f95cd1817 Rename RecordLayout::getPrimaryBaseWasVirtual to isPrimaryBaseVirtual. 
llvm-svn: 120133
 2010-11-24 23:12:57 +00:00
Anders Carlsson
4131f00a1f Add CXXRecordDecl::getIndirectPrimaryBases. 
llvm-svn: 120129
 2010-11-24 22:50:27 +00:00
Anders Carlsson
6277615cbb Simplify code. 
llvm-svn: 120109
 2010-11-24 19:57:04 +00:00
Anders Carlsson
36e2fa8209 CGRecordLayout types are always struct types. 
llvm-svn: 120106
 2010-11-24 19:37:16 +00:00
Anders Carlsson
39a6b22023 Remove FIXME; we don't ever want to lay out empty bases. 
llvm-svn: 119957
 2010-11-22 00:03:08 +00:00
Anders Carlsson
a7dd96ce77 Rename BaseLLVMType to NonVirtualBaseLLVMType. 
llvm-svn: 119956
 2010-11-21 23:59:45 +00:00
Anders Carlsson
e64fbe2a6c Add getCGRecordLayout helper function. No functionality change. 
llvm-svn: 119955
 2010-11-21 23:56:06 +00:00
Nick Lewycky
30d939681c Remove debugging printf. 
Fix linux build.

llvm-svn: 118497
 2010-11-09 09:53:02 +00:00
Anders Carlsson
c1351cac17 Introduce the concept of a non-virtual base type to CGRecordLayoutBuilder as a first step towards fixing PR6995. 
llvm-svn: 118491
 2010-11-09 05:25:47 +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
Daniel Dunbar
c7f9bbafe4 IRgen: Move CGBitFieldInfo strategy computation helpers to static member 
functions.

llvm-svn: 112913
 2010-09-02 23:53:28 +00:00
John McCall
614dbdcd55 Go back to asking CodeGenTypes whether a type is zero-initializable. 
Make CGT defer to the ABI on all member pointer types.
This requires giving CGT a handle to the ABI.
It's way easier to make that work if we avoid lazily creating the ABI.
Make it so.

llvm-svn: 111786
 2010-08-22 21:01:12 +00:00
Daniel Dunbar
401304462a AST: Rename PragmaPackAttr to MaxFieldAlignmentAttr, which is more accurate. 
llvm-svn: 104795
 2010-05-27 01:12:46 +00:00
Anders Carlsson
be48c548c5 Correctly initialize bases with member pointers. This should fix PR6441 but that test case is a bit weird and I'd like to investigate further before closing that bug. 
llvm-svn: 104025
 2010-05-18 16:51:41 +00:00
Anders Carlsson
061ca524b7 Keep track of the LLVM field numbers for non-virtual bases. 
llvm-svn: 104013
 2010-05-18 05:22:06 +00:00
Anders Carlsson
af9e5afe54 Start laying out bases as individual fields. We still use ugly i8 arrays but this is a step in the right direction. 
llvm-svn: 104012
 2010-05-18 05:12:20 +00:00
Anders Carlsson
58fe1756fb Use a more appropriate LLVM type for the vtable pointer. 
llvm-svn: 103078
 2010-05-05 05:47:36 +00:00
Daniel Dunbar
5981377698 IRgen: Fix another case where we generated an invalid access component when we 
immediately narrowed the access size. Fix this (and previous case) by just
choosing a better access size up-front.

llvm-svn: 102068
 2010-04-22 15:22:33 +00:00
Daniel Dunbar
5d6c07e0e9 IRgen: Fix case where we might generate an access component with width == 0, if 
we have to narrow the access side immediately (can happen with packed,
-fno-bitfield-type-align).

llvm-svn: 102067
 2010-04-22 14:56:10 +00:00
Daniel Dunbar
fc66e0ed87 IRgen: Set alignment correctly on bit-field accesses. 
llvm-svn: 102046
 2010-04-22 03:17:04 +00:00
Daniel Dunbar
488f55c271 IRgen: Rewrite bit-field access policy to not access data beyond the bounds of the structure, which we also now verify as part of the post-layout consistency checks. 
- This fixes some pedantic bugs with packed structures, as well as major problems with -fno-bitfield-type-align.

 - Fixes PR5591, PR5567, and all known -fno-bitfield-type-align issues.

 - Review appreciated.

llvm-svn: 102045
 2010-04-22 02:35:46 +00:00
Daniel Dunbar
b6f4b05914 IRgen: Fix CGRecordLayout::print to print the bit-field infos in a consistent order. 
llvm-svn: 102044
 2010-04-22 02:35:36 +00:00
Daniel Dunbar
2ba67440b6 IRgen: Add checking that the LLVM and AST record layout offsets agree (for 
non-bit-fields).

llvm-svn: 102014
 2010-04-21 19:10:49 +00:00
Daniel Dunbar
20b551a443 IRgen: Always use i8 arrays to access union bit-fields. This is ugly, but 
matches how we currently handle structs, and this correctly handles
-fno-bitfield-type-align.

llvm-svn: 101918
 2010-04-20 17:52:30 +00:00
Daniel Dunbar
ccabe48235 AST: Dump ASTRecordLayout objects when they are created with -fdump-record-layouts. 
llvm-svn: 101815
 2010-04-19 20:44:53 +00:00
Daniel Dunbar
2ea5183b59 IRgen: Kill unused function and move the type match assert to after record dumping. 
llvm-svn: 101814
 2010-04-19 20:44:47 +00:00