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LangRef: add a note about the mangling-suppressing \01 prefix

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Someone asked about this on IRC the other day, and I couldn't
find the magic prefix documented anywhere.

Differential Revision: http://reviews.llvm.org/D4728

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214329 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg 2014-07-30 20:02:08 +00:00
parent 8fa6f94ebb
commit dab34a615b
1 changed files with 2 additions and 1 deletions
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docs/LangRef.rst
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@ -79,7 +79,8 @@ identifiers, for different purposes:
characters in their names can be surrounded with quotes. Special
characters may be escaped using ``"\xx"`` where ``xx`` is the ASCII
code for the character in hexadecimal. In this way, any character can
be used in a name value, even quotes themselves.
be used in a name value, even quotes themselves. The ``"\01"`` prefix
can be used on global variables to suppress mangling.
#. Unnamed values are represented as an unsigned numeric value with
their prefix. For example, ``%12``, ``@2``, ``%44``.
#. Constants, which are described in the section Constants_ below.