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<h3 class="section">7.55 <code>.loc_mark_labels </code><var>enable</var></h3>
<p><a name="index-g_t_0040code_007bloc_005fmark_005flabels_007d-directive-397"></a>When emitting DWARF2 line number information,
the <code>.loc_mark_labels</code> directive makes the assembler emit an entry
to the <code>.debug_line</code> line number matrix with the <code>basic_block</code>
register in the state machine set whenever a code label is seen.
The <var>enable</var> argument should be either 1 or 0, to enable or disable
this function respectively.
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