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[AArch64][RISCV] Document option --print-supported-extensions #98698

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[AArch64][RISCV] Document option --print-supported-extensions #98698

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8 changes: 8 additions & 0 deletions clang/docs/CommandGuide/clang.rst
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Expand Up @@ -400,6 +400,14 @@ number of cross compilers, or may only support a native target.
option is only supported on AArch64 and RISC-V. On RISC-V, this option also
prints out the ISA string of enabled extensions.

.. option:: --print-supported-extensions

Prints the list of all extensions that are supported for every CPU target
for an architecture (specified through ``--target=<architecture>`` or
:option:`-arch` ``<architecture>``). If no target is specified, the system
default target will be used. Currently, this option is only supported on
AArch64 and RISC-V.

Code Generation Options
~~~~~~~~~~~~~~~~~~~~~~~

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