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117 Commits

Author SHA1 Message Date
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
Anders Carlsson d5f27b0583 Simplify wide bit-field layout in CGRecordLayoutBuilder, and also fix a bug where assigning to a bit-field member would overwrite other parts of the struct. 
llvm-svn: 101681
 2010-04-17 22:54:57 +00:00
Anders Carlsson 2295f13bb0 Unnamed bit-fields in a union should be laid out with a type that doesn't affect alignment. 
llvm-svn: 101673
 2010-04-17 21:04:52 +00:00
Anders Carlsson 1de2f5710b Factor union field layout code out into a separate function. No functionality change. 
llvm-svn: 101671
 2010-04-17 20:49:27 +00:00
Anders Carlsson 11e5140db9 Vtable -> VTable renames across the board. 
llvm-svn: 101666
 2010-04-17 20:15:18 +00:00
Anders Carlsson be6f3181dd Make CGRecordLayoutBuilder deal with wide bit-fields. Will land tests shortly (Daniel, please review). 
llvm-svn: 101472
 2010-04-16 16:23:02 +00:00
Daniel Dunbar 9c78d63fbc IRgen: Change CGBitFieldInfo to take the AccessInfo as constructor arguments, it is now an immutable object. 
Also, add some checking of various invariants that should hold on the CGBitFieldInfo access.

llvm-svn: 101345
 2010-04-15 05:09:32 +00:00
Daniel Dunbar bb13845c5f IRgen: Eliminate now unused fields from CGBitFieldInfo. 
llvm-svn: 101344
 2010-04-15 05:09:28 +00:00
Daniel Dunbar b935b9370d IRgen: Enhance CGBitFieldInfo with enough information to fully describe the "policy" with which a bit-field should be accessed. 
- For now, these policies are computed to match the current IRgen strategy, although the new information isn't being used yet (except in -fdump-record-layouts).

 - Design comments appreciated.

llvm-svn: 101178
 2010-04-13 20:58:55 +00:00
Daniel Dunbar f9c24f8403 IRgen: Factor out ComputeBitFieldInfo. 
llvm-svn: 101066
 2010-04-12 21:01:28 +00:00
Daniel Dunbar b97bff9aa9 IRgen: Add CGRecordLayout::dump, and dump (irgen) record layouts as part of -fdump-record-layouts. 
llvm-svn: 101051
 2010-04-12 18:14:18 +00:00
Daniel Dunbar c75c8bd757 IRgen: Move the bit-field access type into CGBitFieldInfo, and change bit-field LValues to just store the base address of object containing the bit-field. 
llvm-svn: 100745
 2010-04-08 02:59:45 +00:00
Daniel Dunbar 196ea449ed IRgen: Move BitFieldIsSigned bit into CGBitFieldInfo. 
llvm-svn: 100513
 2010-04-06 01:07:44 +00:00
Daniel Dunbar d45491077a Simplify. 
llvm-svn: 100512
 2010-04-06 01:07:41 +00:00
Daniel Dunbar cd3d5e76ce IRgen: Lift BitFieldInfo to CGBitFieldInfo at namespace level. 
llvm-svn: 100433
 2010-04-05 16:20:44 +00:00
Daniel Dunbar 034299ef25 IRGen: Move the auxiliary data structures tracking AST -> LLVM mappings out of CodeGenTypes, to per-record CGRecordLayout structures. 
- I did a cursory check that this was perf neutral, FWIW.

llvm-svn: 99978
 2010-03-31 01:09:11 +00:00
Daniel Dunbar e75a64f2d3 CGRecordLayoutBuilder: Switch unions to use same mechanism for tracking field and bit-field info as structs. 
- Anders, please check.

llvm-svn: 99977
 2010-03-31 00:55:13 +00:00
Daniel Dunbar 23ee4b7710 IRGen: Hide CGRecordLayoutBuilder class, because I can. 
llvm-svn: 99967
 2010-03-31 00:11:27 +00:00
Daniel Dunbar 072d0bb247 IRgen: Move CGRecordLayout to its own happy little file. 
llvm-svn: 99945
 2010-03-30 22:26:10 +00:00
Anders Carlsson e8bfe412ec Improve handling of emitting 'null' pointers to data members. 
llvm-svn: 95066
 2010-02-02 05:17:25 +00:00
Anders Carlsson b1ef991097 Fix an incorrect union layout assert. Fixes PR6164. 
llvm-svn: 94754
 2010-01-28 18:22:03 +00:00
Anders Carlsson d681a29ac0 Baby steps towards fixing PR5589. If a class needs a vtable pointer, add one. 
llvm-svn: 91545
 2009-12-16 17:27:20 +00:00
Anders Carlsson 220bf4fc5a No need to add tail padding if the resulting LLVM struct type will have the same size as the final record size. 
llvm-svn: 90820
 2009-12-08 01:24:23 +00:00
Anders Carlsson b1d3f7c909 Have ASTRecordLayout keep track of the key function, in preparation of fixing a synthetic ctor/dtor bug. 
llvm-svn: 90168
 2009-11-30 23:41:22 +00:00
Mike Stump a7a1b7e780 Fixup key function calculations. 
llvm-svn: 89412
 2009-11-20 00:02:19 +00:00
Mike Stump beab381d2d This doesn't work yet. 
llvm-svn: 89307
 2009-11-19 03:53:54 +00:00
Fariborz Jahanian e8e631c912 Prevent a code gen. crash on empty unions - pr5408. 
llvm-svn: 86287
 2009-11-06 20:47:40 +00:00
Anders Carlsson 1d116976b4 Store the key function of a record decl inside CGRecordLayout. 
llvm-svn: 83900
 2009-10-12 21:16:22 +00:00
Mike Stump 11289f4280 Remove tabs, and whitespace cleanups. 
llvm-svn: 81346
 2009-09-09 15:08:12 +00:00
Anders Carlsson 0e91275ab4 If the alignment of the chosen field in a union is greater than the alignment of the union, we need to use a packed LLVM struct. Fixes <rdar://problem/7184250>. 
llvm-svn: 80964
 2009-09-03 22:56:02 +00:00
Anders Carlsson 09a3774cd3 Packed unions should be packed. Fixes an assert Daniel reported. 
llvm-svn: 80808
 2009-09-02 17:51:33 +00:00
Anders Carlsson d606de72ab More work towards zero-initializing structs that contain member pointers in constant expressions. 
llvm-svn: 79805
 2009-08-23 01:25:01 +00:00
Anders Carlsson beac2bef4d Remove the PaddingFields member from CGRecordLayout, it wasn't used anyway. 
llvm-svn: 79799
 2009-08-23 01:01:04 +00:00
Owen Anderson 41a750271b Update for LLVM API change. 
llvm-svn: 78946
 2009-08-13 21:57:51 +00:00
Anders Carlsson 28a5fa29f3 Take #pragma pack into account when laying out structs. Fixes rdar://problem/7095436. 
llvm-svn: 78490
 2009-08-08 19:38:24 +00:00
Anders Carlsson 68e0b68289 Introduce a new PragmaPack attribute, and use it for #pragma pack. The PackedAttr now only represents __attribute__((packed)). 
This is necessary because #pragma pack and __attribute__((packed)) have different semantics. No functionality change yet, but this lays the groundwork for fixing a record layout bug.

llvm-svn: 78483
 2009-08-08 18:23:56 +00:00
Anders Carlsson 453878bed4 Assert that the LLVM type has the same size as the RecordDecl size. 
llvm-svn: 78481
 2009-08-08 18:01:57 +00:00
Owen Anderson 758428f4e3 Update for LLVM API change. 
llvm-svn: 78259
 2009-08-05 23:18:46 +00:00
Anders Carlsson 19702bb054 Simplify alignment handling in the record builder. 
llvm-svn: 78069
 2009-08-04 16:29:15 +00:00
Fariborz Jahanian 7be1ad814b No longer need to keep base class offsets in the offset 
table as it has its own place now.

llvm-svn: 77491
 2009-07-29 18:50:06 +00:00
Anders Carlsson d5d6413aa5 More CGRecordLayoutBuilder cleanup. 
llvm-svn: 77335
 2009-07-28 17:56:36 +00:00
Fariborz Jahanian 7b2b1ec6b1 Some minor changes toward support of data 
member access in the presense of non-virtual bases.

llvm-svn: 77246
 2009-07-27 20:57:45 +00:00
Anders Carlsson 72fb384a65 Enable the new struct type builder now that the constant struct builder works. (The old code will still be there until we know that everything works well. 
llvm-svn: 77190
 2009-07-27 15:31:55 +00:00
Anders Carlsson b97a3ec4e7 Fix a tail padding bug in the record layout builder code. The bug was found by an existing test. 
llvm-svn: 77189
 2009-07-27 14:55:54 +00:00
Anders Carlsson e1d5ca583f Check in a half finished new constant struct builder (Obviously not used yet). 
llvm-svn: 76969
 2009-07-24 15:20:52 +00:00
Anders Carlsson 6e853bf2b7 Get rid of the size parameter to AppendField. No functionality change. 
llvm-svn: 76931
 2009-07-24 02:45:50 +00:00
Anders Carlsson 085395426c Don't just store the field/bit field info one field, do it for all fields in the union. 
llvm-svn: 76907
 2009-07-23 22:52:34 +00:00
Anders Carlsson e2accf4404 Fix another thinko. 
llvm-svn: 76903
 2009-07-23 21:52:03 +00:00
Anders Carlsson 516e5e7835 Correct a thinko in bitfield layout code. Fixes PR4611. 
llvm-svn: 76898
 2009-07-23 21:16:33 +00:00
Anders Carlsson d78fc89fcb We don't need to keep track of the packed alignment, just whether the struct is packed or not. Fixes PR4610. 
llvm-svn: 76884
 2009-07-23 17:24:40 +00:00
Anders Carlsson 8af896c10a Move the LLVM field number for bit fields into the BitFieldInfo structure, since it's meaning is completely different than for non-bit fields. 
llvm-svn: 76882
 2009-07-23 17:01:21 +00:00
Anders Carlsson f55922b8b8 Set field info for unions. 
llvm-svn: 76856
 2009-07-23 04:59:05 +00:00
Anders Carlsson f814ee6003 Handle zero width bit fields in unions correctly (by ignoring them). 
llvm-svn: 76847
 2009-07-23 04:00:39 +00:00
Anders Carlsson 697f65943d Implement union layout support. 
llvm-svn: 76846
 2009-07-23 03:43:54 +00:00
Anders Carlsson 307846fe67 Check in CGRecordLayoutBuilder which is a reimplementation of the record layout code. (Yay, no more packed structs unless absolutely necessary). We currently don't use the layouts being built but that will change when the new code is mature enough :) 
llvm-svn: 76845
 2009-07-23 03:17:50 +00:00