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| <a name="Sub_002dInstructions-1"></a> |
| <h4 class="subsubsection">9.10.2.2 Sub-Instructions</h4> |
| <a name="index-D30V-sub_002dinstructions"></a> |
| <a name="index-sub_002dinstructions_002c-D30V"></a> |
| <p>The D30V assembler takes as input a series of instructions, either one-per-line, |
| or in the special two-per-line format described in the next section. Some of these |
| instructions will be short-form or sub-instructions. These sub-instructions can be packed |
| into a single instruction. The assembler will do this automatically. It will also detect |
| when it should not pack instructions. For example, when a label is defined, the next |
| instruction will never be packaged with the previous one. Whenever a branch and link |
| instruction is called, it will not be packaged with the next instruction so the return |
| address will be valid. Nops are automatically inserted when necessary. |
| </p> |
| <p>If you do not want the assembler automatically making these decisions, you can control |
| the packaging and execution type (parallel or sequential) with the special execution |
| symbols described in the next section. |
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