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docs: document x mangling in LangRef

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Windows has two different mangling specifiers.  `x` is used on x86 for the `_`
UserLabelPrefix.  Others use `w` for the no UserLabelPrefix.

llvm-svn: 251260
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Saleem Abdulrasool 2015-10-25 20:39:35 +00:00
parent 6406920ed6
commit 2d3fcc35ee
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docs/LangRef.rst
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@ -1569,6 +1569,8 @@ as follows:
symbols get a ``_`` prefix.
* ``w``: Windows COFF prefix: Similar to Mach-O, but stdcall and fastcall
functions also get a suffix based on the frame size.
* ``x``: Windows x86 COFF prefix: Similar to Windows COFF, but use a ``_``
prefix for ``__cdecl`` functions.
``n<size1>:<size2>:<size3>...``
This specifies a set of native integer widths for the target CPU in
bits. For example, it might contain ``n32`` for 32-bit PowerPC,