0217dfc2ba
Perform zero-initialization of virtual base classes when emitting
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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
5a39bd2443
A CGRecordLayout object persists. Since its contained types may
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refer to opaque types, they must be held via PATypeHolders. I'm
not sure why this hasn't blown up before.
llvm-svn: 120491
2010-11-30 23:21:46 +00:00
36e2fa8209
CGRecordLayout types are always struct types.
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llvm-svn: 120106
2010-11-24 19:37:16 +00:00
a7dd96ce77
Rename BaseLLVMType to NonVirtualBaseLLVMType.
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llvm-svn: 119956
2010-11-21 23:59:45 +00:00
c1351cac17
Introduce the concept of a non-virtual base type to CGRecordLayoutBuilder as a first step towards fixing PR6995.
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llvm-svn: 118491
2010-11-09 05:25:47 +00:00
c7f9bbafe4
IRgen: Move CGBitFieldInfo strategy computation helpers to static member
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functions.
llvm-svn: 112913
2010-09-02 23:53:28 +00:00
614dbdcd55
Go back to asking CodeGenTypes whether a type is zero-initializable.
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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
061ca524b7
Keep track of the LLVM field numbers for non-virtual bases.
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llvm-svn: 104013
2010-05-18 05:22:06 +00:00
19d6355b77
Fix comments.
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llvm-svn: 102429
2010-04-27 14:51:07 +00:00
9c78d63fbc
IRgen: Change CGBitFieldInfo to take the AccessInfo as constructor arguments, it is now an immutable object.
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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
bb13845c5f
IRgen: Eliminate now unused fields from CGBitFieldInfo.
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llvm-svn: 101344
2010-04-15 05:09:28 +00:00
b2b40a479d
IRgen: Tweak CGBitFieldInfo doxyments & add an accessor.
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llvm-svn: 101221
2010-04-14 04:07:59 +00:00
b935b9370d
IRgen: Enhance CGBitFieldInfo with enough information to fully describe the "policy" with which a bit-field should be accessed.
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- 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
b97bff9aa9
IRgen: Add CGRecordLayout::dump, and dump (irgen) record layouts as part of -fdump-record-layouts.
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llvm-svn: 101051
2010-04-12 18:14:18 +00:00
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.
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llvm-svn: 100745
2010-04-08 02:59:45 +00:00
196ea449ed
IRgen: Move BitFieldIsSigned bit into CGBitFieldInfo.
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llvm-svn: 100513
2010-04-06 01:07:44 +00:00
cd3d5e76ce
IRgen: Lift BitFieldInfo to CGBitFieldInfo at namespace level.
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llvm-svn: 100433
2010-04-05 16:20:44 +00:00
034299ef25
IRGen: Move the auxiliary data structures tracking AST -> LLVM mappings out of CodeGenTypes, to per-record CGRecordLayout structures.
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- I did a cursory check that this was perf neutral, FWIW.
llvm-svn: 99978
2010-03-31 01:09:11 +00:00
23ee4b7710
IRGen: Hide CGRecordLayoutBuilder class, because I can.
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llvm-svn: 99967
2010-03-31 00:11:27 +00:00
072d0bb247
IRgen: Move CGRecordLayout to its own happy little file.
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llvm-svn: 99945
2010-03-30 22:26:10 +00:00
John McCall