Add the `pass_object_size` attribute to clang.

Description

Add the pass_object_size attribute to clang.

pass_object_size is our way of enabling __builtin_object_size to
produce high quality results without requiring inlining to happen
everywhere.

A link to the design doc for this attribute is available at the
Differential review link below.

Differential Revision: http://reviews.llvm.org/D13263

Details

Committed
gbivDec 2 2015, 1:58 PM
Differential Revision
D13263: Addition of __attribute__((pass_object_size)) to Clang
Parents
rL254553: Make UBSan bootstrap failures fatal again
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