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Diffstat (limited to 'llvm/docs/LangRef.rst')
| -rw-r--r-- | llvm/docs/LangRef.rst | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst index 9d8242f29d7..5bbbf32710d 100644 --- a/llvm/docs/LangRef.rst +++ b/llvm/docs/LangRef.rst @@ -1940,17 +1940,22 @@ as follows: ``a:<abi>:<pref>`` This specifies the alignment for an object of aggregate type. ``m:<mangling>`` - If present, specifies that llvm names are mangled in the output. The + If present, specifies that llvm names are mangled in the output. Symbols + prefixed with the mangling escape character ``\01`` are passed through + directly to the assembler without the escape character. The mangling style options are * ``e``: ELF mangling: Private symbols get a ``.L`` prefix. * ``m``: Mips mangling: Private symbols get a ``$`` prefix. * ``o``: Mach-O mangling: Private symbols get ``L`` prefix. Other 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. + * ``x``: Windows x86 COFF mangling: Private symbols get the usual prefix. + Regular C symbols get a ``_`` prefix. Functions with ``__stdcall``, + ``__fastcall``, and ``__vectorcall`` have custom mangling that appends + ``@N`` where N is the number of bytes used to pass parameters. C++ symbols + starting with ``?`` are not mangled in any way. + * ``w``: Windows COFF mangling: Similar to ``x``, except that normal C + symbols do not receive a ``_`` prefix. ``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, |
