* hooks.c (hook_int_void_no_regs): Rename from

        hook_reg_class_void_no_regs; change return type.
        * hooks.h: Update.
        * target-def.h (TARGET_BRANCH_TARGET_REGISTER_CLASS): Update.
        * target.h (branch_target_register_class): Change return type to int.
        Add documentation.
        * config/sh/sh.c (sh_target_reg_class): Change return type.
        * doc/tm.texi (TARGET_BRANCH_TARGET_REGISTER_CLASS): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@68275 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 2 deletions

diff --git a/gcc/target.h b/gcc/target.h
index 4ba369d7d3e..f693868eb57 100644
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -296,8 +296,15 @@ struct gcc_target
      not, at the current point in the compilation.  */
   bool (* cannot_modify_jumps_p) PARAMS ((void));
 
-  enum reg_class (* branch_target_register_class) PARAMS ((void));
-  bool (* branch_target_register_callee_saved) PARAMS ((bool));
+  /* Return a register class for which branch target register
+     optimizations should be applied.  */
+  int (* branch_target_register_class) PARAMS ((void));
+
+  /* Return true if branch target register optimizations should include
+     callee-saved registers that are not already live during the current
+     function.  AFTER_PE_GEN is true if prologues and epilogues have
+     already been generated.  */
+  bool (* branch_target_register_callee_saved) PARAMS ((bool after_pe_gen));
 
   /* True if the constant X cannot be placed in the constant pool.  */
   bool (* cannot_force_const_mem) PARAMS ((rtx));