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Diffstat (limited to 'docs/LangRef.rst')
| -rw-r--r-- | docs/LangRef.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/docs/LangRef.rst b/docs/LangRef.rst index 48771c211c1..e7d6f67c939 100644 --- a/docs/LangRef.rst +++ b/docs/LangRef.rst @@ -3200,7 +3200,8 @@ MIPS: ``sc`` instruction on the given subtarget (details vary). - ``r``, ``d``, ``y``: A 32 or 64-bit GPR register. - ``f``: A 32 or 64-bit FPU register (``F0-F31``), or a 128-bit MSA register - (``W0-W31``). + (``W0-W31``). In the case of MSA registers, it is recommended to use the ``w`` + argument modifier for compatibility with GCC. - ``c``: A 32-bit or 64-bit GPR register suitable for indirect jump (always ``25``). - ``l``: The ``lo`` register, 32 or 64-bit. @@ -3409,7 +3410,9 @@ MIPS: second word of a double-word memory operand. (On a big-endian system, ``D`` is equivalent to ``L``, and on little-endian system, ``D`` is equivalent to ``M``.) -- ``w``: No effect. +- ``w``: No effect. Provided for compatibility with GCC which requires this + modifier in order to print MSA registers (``W0-W31``) with the ``f`` + constraint. NVPTX: |