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clang-p2996/llvm/docs/AMDGPU/gfx8_probe.rst
Dmitry Preobrazhensky 8ea3e9d9a2 [AMDGPU][MC][NFC][DOC] Updated AMD GPU assembler syntax description.
Summary of changes:
- Added f16 omod modifier (bug 51386).
- Corrected names of data types (bug 48638).
- Enabled a16 with most GFX10 MIMG opcodes (see https://reviews.llvm.org/D102231).
- Corrected description of integer operands (bug 51130).
- Corrected description of 8-bit DS offsets (bug 51536).
- Improved PERMLANE op_sel description.
- Corrected *SAD* opcode types.
2021-08-27 17:23:20 +03:00

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.. _amdgpu_synid_gfx8_probe:
probe
=====
A bit mask which indicates request permissions.
This operand must be specified as an :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`.
The value is truncated to 7 bits, but only 3 low bits are significant.
============ ==============================
Bit Number Description
============ ==============================
0 Request *read* permission.
1 Request *write* permission.
2 Request *execute* permission.
============ ==============================