diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/MIRLangRef.rst | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/docs/MIRLangRef.rst b/docs/MIRLangRef.rst index 82a61bcde86..b0e3984c338 100644 --- a/docs/MIRLangRef.rst +++ b/docs/MIRLangRef.rst @@ -615,6 +615,21 @@ If the identifier doesn't match the regular expression The unnamed global values are represented using an unsigned numeric value with the '@' prefix, like in the following examples: ``@0``, ``@989``. +Target-dependent Index Operands +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +A target index operand is a target-specific index and an offset. The +target-specific index is printed using target-specific names and a positive or +negative offset. + +For example, the ``amdgpu-constdata-start`` is associated with the index ``0`` +in the AMDGPU backend. So if we have a target index operand with the index 0 +and the offset 8: + +.. code-block:: text + + %sgpr2 = S_ADD_U32 _, target-index(amdgpu-constdata-start) + 8, implicit-def _, implicit-def _ + .. TODO: Describe the parsers default behaviour when optional YAML attributes are missing. .. TODO: Describe the syntax for the bundled instructions. @@ -631,6 +646,5 @@ the '@' prefix, like in the following examples: ``@0``, ``@989``. .. TODO: Describe the syntax of the CFI index machine operands. .. TODO: Describe the syntax of the metadata machine operands, and the instructions debug location attribute. -.. TODO: Describe the syntax of the target index machine operands. .. TODO: Describe the syntax of the register live out machine operands. .. TODO: Describe the syntax of the machine memory operands. |