[RISCV][doc] Document profiles in RISCVUsage #98326
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Just like we do for extensions, list those which are supported and those that can be enabled with additional flags.
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@llvm/pr-subscribers-backend-risc-v Author: Alex Bradbury (asb) ChangesJust like we do for extensions, list those which are supported and those that can be enabled with additional flags. Full diff: https://github.com/llvm/llvm-project/pull/98326.diff 1 Files Affected:
diff --git a/llvm/docs/RISCVUsage.rst b/llvm/docs/RISCVUsage.rst
index 41b22020670d8..a78e57cf9621c 100644
--- a/llvm/docs/RISCVUsage.rst
+++ b/llvm/docs/RISCVUsage.rst
@@ -70,6 +70,30 @@ To specify the target triple:
To select an E variant ISA (e.g. RV32E instead of RV32I), use the base
architecture string (e.g. ``riscv32``) with the extension ``e``.
+Profiles
+========
+
+Supported profile names can be passed using ``-march`` instead of a standard
+ISA naming string. Currently supported profiles:
+
+* ``rvi20u32``
+* ``rvi20u64``
+* ``rva20u64``
+* ``rva20s64``
+* ``rva22u64``
+* ``rva22s64``
+
+
+Profiles that are not yet ratified cannot be used unless
+``-menable-experimental-extensions`` (or equivalent for other tools) is
+specified. This applies to the following profiles:
+
+* ``rva23u64``
+* ``rva23s64``
+* ``rvb23u64``
+* ``rvb23s64``
+* ``rvm23u32``
+
.. _riscv-extensions:
Extensions
|
preames
reviewed
Jul 10, 2024
| * ``rvb23u64`` | ||
| * ``rvb23s64`` | ||
| * ``rvm23u32`` | ||
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Can you add a note about how to add additional extensions? e.g. rvi20u32_zicond
aaryanshukla
pushed a commit
to aaryanshukla/llvm-project
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Jul 14, 2024
Just like we do for extensions, list those which are supported and those that can be enabled with additional flags.
jrtc27
reviewed
Jul 15, 2024
| in the ``rva20u64`` profile. | ||
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| Profiles that are not yet ratified cannot be used unless | ||
| ``-menable-experimental-extensions`` (or equivalent for other tools) is |
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Are there tools that accept ISA strings rather than target feature lists but don't call their options -march and -menable-experimental-extensions? I'm drawing a blank but maybe I'm missing something obvious...
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Just like we do for extensions, list those which are supported and those that can be enabled with additional flags.