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106 Commits

Author SHA1 Message Date
Ken Dyck 272b6fa0f0 Simplify AppendTailPadding() by converting its parameter to CharUnits. No 
change in functionality intended.

llvm-svn: 130108
 2011-04-24 16:53:44 +00:00
Ken Dyck 7a0b19f978 Eliminate literal 8s from LayoutUnionField by converting NumBytesToAppend to 
CharUnits. No change in functionality intended.

llvm-svn: 130107
 2011-04-24 16:47:33 +00:00
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