| .. |
| Copyright 1988-2022 Free Software Foundation, Inc. |
| This is part of the GCC manual. |
| For copying conditions, see the copyright.rst file. |
| |
| .. index:: miscellaneous register hooks |
| |
| .. _miscellaneous-register-hooks: |
| |
| Miscellaneous register hooks |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| .. c:var:: bool TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS |
| |
| .. hook-start:TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS |
| |
| Set to true if each call that binds to a local definition explicitly |
| clobbers or sets all non-fixed registers modified by performing the call. |
| That is, by the call pattern itself, or by code that might be inserted by the |
| linker (e.g. stubs, veneers, branch islands), but not including those |
| modifiable by the callee. The affected registers may be mentioned explicitly |
| in the call pattern, or included as clobbers in CALL_INSN_FUNCTION_USAGE. |
| The default version of this hook is set to false. The purpose of this hook |
| is to enable the fipa-ra optimization. |
| |
| .. hook-end |
