Commit Graph

10 Commits

Author SHA1 Message Date
John McCall 0cfc51eb09 Fix the layout of bitfields in ms_struct unions: their
alignment is ignored, and they always allocate a complete
storage unit.

Also, change the dumping of AST record layouts: use the more
readable C++-style dumping even in C, include bitfield offset
information in the dump, and don't print sizeof/alignof
information for fields of record type, since we don't do so
for bases or other kinds of field.

rdar://22275433

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@245514 91177308-0d34-0410-b5e6-96231b3b80d8
2015-08-19 22:42:36 +00:00
Aaron Ballman b3ce54c645 __declspec is not a core Clang language extension. Instead, require -fms-extensions or -fborland to enable the language extension.
Note: __declspec is also temporarily enabled when compiling for a CUDA target because there are implementation details relying on __declspec(property) support currently. When those details change, __declspec should be disabled for CUDA targets.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@238238 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-26 19:44:52 +00:00
Warren Hunt 9ba34760e1 [MS-ABI] Drop Special Layout in 64-bit mode.
As of cl.exe version 18, the special layout rules for structs with 
alignment 16 or greater has been dropped.  This patch drops the behavior 
from clang.  This patch also updates the lit tests to reflect the 
change.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204674 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-24 21:37:27 +00:00
Warren Hunt e62fd7d3d7 [MS-ABI] Update to zero-sized padding algorithm
Slight change to the way zero-sized sub-objects are tracked in the 
presence of virtual bases.
In addition we correctly distinguish between dsize and nvsize.
addresses http://llvm.org/bugs/show_bug.cgi?id=18826
Unit tests are included.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201832 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-21 01:40:35 +00:00
David Majnemer ec7248c93f MS ABI: Fix some layout tests
Some lines intended to be used for testing x86_64 ABI compatibility were
not firing because lines were annotated with the wrong FileCheck prefix:
X64 vs 64


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201454 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-15 01:21:20 +00:00
Hans Wennborg 11b1b8ab36 Remove the -cxx-abi command-line flag.
This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples,
Itanium otherwise. It's no longer possible to do weird combinations.

To be able to run a test with a specific ABI without constraining it to a
specific triple, new substitutions are added to lit: %itanium_abi_triple and
%ms_abi_triple can be used to get the current target triple adjusted to the
desired ABI. For example, if the test suite is running with the i686-pc-win32
target, %itanium_abi_triple will expand to i686-pc-mingw32.

Differential Revision: http://llvm-reviews.chandlerc.com/D2545

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199250 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 19:35:09 +00:00
Warren Hunt ed121420c2 [ms-abi] Refactor Microsoft Record Layout
This patch refactors microsoft record layout to be more "natural".  The 
most dominant change is that vbptrs and vfptrs are injected after the 
fact.  This simplifies the implementation and the math for the offest 
for the first base/field after the vbptr.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@198818 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-09 00:30:56 +00:00
Warren Hunt 53c8f75fed [ms-abi] 64-bit fixes for r196549
In order to address latent bugs that were easier to expose in 64-bit 
mode, we move the application of __declspec(align) to before the layout 
of vbases rather than after.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196861 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-10 01:44:39 +00:00
Warren Hunt 7967c95891 Implements 64 bit microsoft record layout and adds lit tests to cover
it.  Also removes all of the microsoft C++ ABI related code from the 
itanium layout builder.

Differential Revision: http://llvm-reviews.chandlerc.com/D2003



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193290 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-23 23:53:07 +00:00
Warren Hunt dc58180432 Lit tests for Microsoft C++ record layout.
They weren't added with the rest of the microsoft record layout patch due me not 
doing svn add.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192612 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-14 19:08:58 +00:00