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84 Commits

Author SHA1 Message Date
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
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