| .. |
| ************************************************** |
| * * |
| * Automatically generated file, do not edit! * |
| * * |
| ************************************************** |
| |
| .. _amdgpu_synid_gfx8_imask: |
| |
| imask |
| ===== |
| |
| This operand is a mask which controls indexing mode for operands of subsequent instructions. |
| Bits 0, 1 and 2 control indexing of *src0*, *src1* and *src2*, while bit 3 controls indexing of *dst*. |
| Value 1 enables indexing and value 0 disables it. |
| |
| ===== ======================================== |
| Bit Meaning |
| ===== ======================================== |
| 0 Enables or disables *src0* indexing. |
| 1 Enables or disables *src1* indexing. |
| 2 Enables or disables *src2* indexing. |
| 3 Enables or disables *dst* indexing. |
| ===== ======================================== |
| |
| This operand may be specified as one of the following: |
| |
| * An :ref:`integer_number<amdgpu_synid_integer_number>` or an :ref:`absolute_expression<amdgpu_synid_absolute_expression>`. The value must be in the range 0..15. |
| * A *gpr_idx* value described below. |
| |
| ==================================== =========================================== |
| Gpr_idx Value Syntax Description |
| ==================================== =========================================== |
| gpr_idx(*<operands>*) Enable indexing for specified *operands* |
| and disable it for the rest. |
| *Operands* is a comma-separated list of |
| values which may include: |
| |
| * "SRC0" - enable *src0* indexing. |
| |
| * "SRC1" - enable *src1* indexing. |
| |
| * "SRC2" - enable *src2* indexing. |
| |
| * "DST" - enable *dst* indexing. |
| |
| Each of these values may be specified only |
| once. |
| |
| *Operands* list may be empty; this syntax |
| disables indexing for all operands. |
| ==================================== =========================================== |
| |
| Examples: |
| |
| .. parsed-literal:: |
| |
| s_set_gpr_idx_mode 0 |
| s_set_gpr_idx_mode gpr_idx() // the same as above |
| |
| s_set_gpr_idx_mode 15 |
| s_set_gpr_idx_mode gpr_idx(DST,SRC0,SRC1,SRC2) // the same as above |
| s_set_gpr_idx_mode gpr_idx(SRC0,SRC1,SRC2,DST) // the same as above |
| |
| s_set_gpr_idx_mode gpr_idx(DST,SRC1) |