Hi, Here is a patch which adds support for new instructions from Intel Memory Protection Extensions (MPX) ISA [1]
This patch introduces bound type, modes, registers and all MPX instructions. Control transfer instructions are modified to support 'bnd' prefix used by Intel MPX. Bootstrap and checked on x86_64-linux. There is one issue [2] with length attribute computation which leads to several fails in make check. Currently I assume it is not a bug in this patch. But in case it is a patch problem I have a version which uses temp attribute for length computation as a workaround (resulting in clean make check). Does it look good for trunk? Thanks, Ilya [1] http://download-software.intel.com/sites/default/files/319433-015.pdf [2] http://gcc.gnu.org/ml/gcc/2013-07/msg00311.html ----- 2013-07-23 Ilya Enkovich <ilya.enkov...@intel.com> * mode-classes.def (MODE_BOUND): New. * tree.def (BOUND_TYPE): New. * genmodes.c (complete_mode): Support MODE_BOUND. (BOUND_MODE): New. (make_bound_mode): New. * machmode.h (BOUND_MODE_P): New. * stor-layout.c (mode_for_bound): New. (int_mode_for_mode): Support MODE_BOUND. (layout_type): Support BOUND_TYPE. * tree-pretty-print.c (dump_generic_node): Support BOUND_TYPE. * tree.c (build_int_cst_wide): Support BOUND_TYPE. (type_contains_placeholder_1): Likewise. * tree.h (BOUND_TYPE_P): New. * varasm.c (output_constant): Support BOUND_TYPE. * config/i386/constraints.md (B): New. * config/i386/i386-modes.def (BND32): New. (BND64): New. * config/i386/i386-protos.h (ix86_bnd_prefixed_insn_p): New. * config/i386/i386.c (regclass_map): Add bound registers. (dbx_register_map): Likewise. (dbx64_register_map): Likewise. (svr4_dbx_register_map): Likewise. (ix86_code_end): Add MPX bnd prefix. (output_set_got): Likewise. (ix86_output_call_insn): Likewise. (get_some_local_dynamic_name): Add '!' (MPX bnd) print prefix support. (ix86_print_operand_punct_valid_p): Likewise. (ix86_print_operand_address): Support UNSPEC_BNDMK_ADDR and UNSPEC_BNDMK_ADDR. (ix86_class_likely_spilled_p): Add bound regs support. (ix86_hard_regno_mode_ok): Likewise. (x86_order_regs_for_local_alloc): Likewise. (ix86_bnd_prefixed_insn_p): New. * config/i386/i386.h (FIRST_PSEUDO_REGISTER): Fix to new value. (FIXED_REGISTERS): Add bound registers. (CALL_USED_REGISTERS): Likewise. (REG_ALLOC_ORDER): Likewise. (HARD_REGNO_NREGS): Likewise. (VALID_BND_REG_MODE): New. (FIRST_BND_REG): New. (LAST_BND_REG): New. (reg_class): Add BND_REGS. (REG_CLASS_NAMES): Likewise. (REG_CLASS_CONTENTS): Likewise. (BND_REGNO_P): New. (ANY_BND_REG_P): New. (BNDmode): New. (HI_REGISTER_NAMES): Add bound registers. * config/i386/i386.md (UNSPEC_BNDMK): New. (UNSPEC_BNDMK_ADDR): New. (UNSPEC_BNDSTX): New. (UNSPEC_BNDLDX): New. (UNSPEC_BNDLDX_ADDR): New. (UNSPEC_BNDCL): New. (UNSPEC_BNDCU): New. (UNSPEC_BNDCN): New. (UNSPEC_MPX_FENCE): New. (BND0_REG): New. (BND1_REG): New. (type): Add mpxmov, mpxmk, mpxchk, mpxld, mpxst. (length_immediate): Likewise. (prefix_0f): Likewise. (memory): Likewise. (prefix_rep): Check for bnd prefix. (BND): New. (bnd_ptr): New. (BNDCHECK): New. (bndcheck): New. (*jcc_1): Add MPX bnd prefix and fix length. (*jcc_2): Likewise. (jump): Likewise. (simple_return_internal): Likewise. (simple_return_pop_internal): Likewise. (*indirect_jump): Add MPX bnd prefix. (*tablejump_1): Likewise. (simple_return_internal_long): Likewise. (simple_return_indirect_internal): Likewise. (<mode>_mk): New. (*<mode>_mk): New. (mov<mode>): New. (*mov<mode>_internal_mpx): New. (<mode>_<bndcheck>): New. (*<mode>_<bndcheck>): New. (<mode>_ldx): New. (*<mode>_ldx): New. (<mode>_stx): New. (*<mode>_stx): New. * config/i386/predicates.md (lea_address_operand) Rename to... (address_no_seg_operand): ... this. (address_mpx_no_base_operand): New. (address_mpx_no_index_operand): New. (bnd_mem_operator): New.
mpx-isa.patch
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