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GCC Middle and Back End API Reference
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#include <df.h>

Data Fields | |
| struct df_base_ref | base |
| basic_block | bb |
The three types of df_refs. Note that the df_ref_extract is an extension of the df_regular_ref, not the df_base_ref.
| struct df_base_ref df_artificial_ref::base |
| basic_block df_artificial_ref::bb |
Artificial refs do not have an insn, so to get the basic block,
it must be explicitly here.