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

Data Fields | |
| rtunion | fld [1] |
| HOST_WIDE_INT | hwint [1] |
| struct block_symbol | block_sym |
| struct real_value | rv |
| struct fixed_value | fv |
The first element of the operands of this rtx. The number of operands and their types are controlled by the `code' field, according to rtl.def.
| struct block_symbol rtx_def::u::block_sym |
| rtunion rtx_def::u::fld[1] |
| struct fixed_value rtx_def::u::fv |
| HOST_WIDE_INT rtx_def::u::hwint[1] |
| struct real_value rtx_def::u::rv |