Commit Graph

12 Commits

Author SHA1 Message Date
Justin Bogner 399093276c AST: Respect alignment attributes on typedef'd arrays
When instantiating an array that has an alignment attribute on it, we
were looking through the array type and only considering the element
type for the resulting alignment. We need to make sure we take the
array's requirements into account too.

llvm-svn: 206317
2014-04-15 20:12:41 +00:00
David Majnemer 8b6bd571c8 Sema: Make getPreferredTypeAlign respect alignments specified with an aligned attribute on a typedef
When calculating the preferred alignment of a type, consider if a alignment
attribute came from a typedef declaration.  If one did, do not naturally align
the type.

Patch by Stephan Tolksdorf, with a little tweaking and an additional testcase by me.

llvm-svn: 202088
2014-02-24 23:34:17 +00:00
David Majnemer abecae741c Sema: Restrict alignment to 2**28.
Allowing alignment past this point causes wrap around within clang.

N.B.  GCC has the same restriction.

llvm-svn: 201254
2014-02-12 20:36:10 +00:00
Aaron Ballman 87e7dea2cd There is no such thing as __attribute__((align)); that's a __declspec attribute. Fixing these test cases to use the proper spelling for their syntax.
llvm-svn: 199141
2014-01-13 21:30:03 +00:00
Douglas Gregor 4f362c7960 Make sure that we recognize __attribute__((align)) as a synonym for
__attribute__((aligned)). Fixes <rdar://problem/11435441>, a
regression I introduced in r156003. This is the narrow fix; a more
comprehensive fix is coming.

llvm-svn: 156657
2012-05-11 23:01:43 +00:00
John McCall 942687084f __attribute__((aligned(n))) directly specifies the alignment of a declaration
unless it's a non-packed field, in which case it can only increase the
alignment.  [[align]] effectively works the same way for well-formed code
(because it's ill-formed for [[align]] to decrease alignment ever).

Fixes rdar://problem/8335865

llvm-svn: 116070
2010-10-08 18:24:19 +00:00
Daniel Dunbar 8fbe78f6fc Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.
- This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446
2009-12-15 20:14:24 +00:00
Douglas Gregor ef462e6bb0 Properly compute the alignment of typedefs that make use of the
"aligned" attribute. Previously, we were skipping over these
attributes when we jumped directly to the canonical type. Now,
ASTContext::getTypeInfo walks through typedefs and other
"non-canonical" types manually, looking for "aligned" attributes on
typedefs.

As part of this change, I moved the GNU-specific logic (such as
determining the alignment of void or of a function pointer) out of the
expression evaluator and into ASTContext::getTypeInfo.

llvm-svn: 70497
2009-04-30 17:32:17 +00:00
Daniel Dunbar a45cf5b6b0 Rename clang to clang-cc.
Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
2009-03-24 02:24:46 +00:00
Eli Friedman 3f8c01a110 Fix for PR3433: map __alignof__ to preferred alignment. (This was
partially done in r65258.)

llvm-svn: 65260
2009-02-22 03:31:23 +00:00
Eli Friedman 19a546c15b Improvements to ASTContext::getDeclAlignInBytes; fixes the testcase in
PR3254 and part of PR3433.

The isICE changes are necessary to keep the computed results 
consistent with Evaluate.

llvm-svn: 65258
2009-02-22 02:56:25 +00:00
Daniel Dunbar 6e8c07d0ea Diagnose non-power-of-2 arguments to attribute aligned.
llvm-svn: 64700
2009-02-16 23:37:57 +00:00