> Add -mindirect-branch-register to force indirect branch via register. > This is implemented by disabling patterns of indirect branch via memory, > similar to TARGET_X32. > > -mindirect-branch= and -mfunction-return= tests are updated with > -mno-indirect-branch-register to avoid false test failures when > -mindirect-branch-register is added to RUNTESTFLAGS for "make check". > > gcc/ > > * config/i386/constraints.md (Bs): Disallow memory operand for > -mindirect-branch-register. > (Bw): Likewise. > * config/i386/predicates.md (indirect_branch_operand): Likewise. > (GOT_memory_operand): Likewise. > (call_insn_operand): Likewise. > (sibcall_insn_operand): Likewise. > (GOT32_symbol_operand): Likewise. > * config/i386/i386.md (indirect_jump): Call convert_memory_address > for -mindirect-branch-register. > (tablejump): Likewise. > (*sibcall_memory): Likewise. > (*sibcall_value_memory): Likewise. > Disallow peepholes of indirect call and jump via memory for > -mindirect-branch-register. > (*call_pop): Replace m with Bw. > (*call_value_pop): Likewise. > (*sibcall_pop_memory): Replace m with Bs. > * config/i386/i386.opt (mindirect-branch-register): New option. > * doc/invoke.texi: Document -mindirect-branch-register option.
OK. Honza
