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Author SHA1 Message Date
Akira Hatanaka 854f5f332a [Sema] Teach -Wcast-align to compute an accurate alignment using the 
alignment information on VarDecls in more cases

This commit improves upon https://reviews.llvm.org/D21099. The code that
computes the source alignment now understands array subscript
expressions, binary operators, derived-to-base casts, and several more
expressions.

rdar://problem/59242343

Differential Revision: https://reviews.llvm.org/D78767
 2020-05-15 00:59:03 -07:00
John McCall 5cf48cd17c On second thought, don't warn about reinterpret_casts under -Wcast-align. 
llvm-svn: 111497
 2010-08-19 01:19:08 +00:00
John McCall 2b5c1b2516 Implement -Wcast-align. The initial design of this diagnostic diverges 
from GCC's in that we warn on *any* increase in alignment requirements, not
just those that are enforced by hardware.  Please let us know if this causes
major problems for you (which it shouldn't, since it's an optional warning).

llvm-svn: 110959
 2010-08-12 21:44:57 +00:00