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| author | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2017-12-13 10:30:51 +0000 |
|---|---|---|
| committer | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2017-12-13 10:30:51 +0000 |
| commit | 2b16863067fa1f188f616f80ab6ea23e7d1cb7c1 (patch) | |
| tree | 83d8573492cd0e0f3dd8ff264794178bdfe1dd65 /docs | |
| parent | c84690975acd7c5f43e4c44d4653a9f7e384ba8f (diff) | |
[CodeGen] Print target index operands as target-index(target-specific) + 8 in both MIR and debug output
Work towards the unification of MIR and debug output by printing `target-index(target-specific) + 8` instead of `<ti#0+8>` and `target-index(target-specific) + 8` instead of `<ti#0-8>`.
Only debug syntax is affected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320565 91177308-0d34-0410-b5e6-96231b3b80d8
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. |