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-;; APPLE LOCAL file v7 support. Merge from Codesourcery
-;; ARM Cortex-R4 scheduling description.
-;; Copyright (C) 2007 Free Software Foundation, Inc.
-;; Contributed by CodeSourcery.
-
-;; This file is part of GCC.
-
-;; GCC is distributed in the hope that it will be useful, but WITHOUT
-;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
-;; License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GCC; see the file COPYING. If not, write to
-;; the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
-
-(define_automaton "cortex_r4")
-
-;; We approximate the dual-issue constraints of this core using four
-;; "issue units" and a reservation matrix as follows. The numbers indicate
-;; the instruction groups' preferences in order. Multiple entries for
-;; the same numbered preference indicate units that must be reserved
-;; together.
-;;
-;; Issue unit: A B C ALU
-;;
-;; ALU w/o reg shift 1st 2nd 1st and 2nd
-;; ALU w/ reg shift 1st 2nd 2nd 1st and 2nd
-;; Moves 1st 2nd 2nd
-;; Multiplication 1st 1st
-;; Division 1st 1st
-;; Load/store single 1st 1st
-;; Other load/store 1st 1st
-;; Branches 1st
-
-(define_cpu_unit "cortex_r4_issue_a" "cortex_r4")
-(define_cpu_unit "cortex_r4_issue_b" "cortex_r4")
-(define_cpu_unit "cortex_r4_issue_c" "cortex_r4")
-(define_cpu_unit "cortex_r4_issue_alu" "cortex_r4")
-
-(define_reservation "cortex_r4_alu"
- "(cortex_r4_issue_a+cortex_r4_issue_alu)|\
- (cortex_r4_issue_b+cortex_r4_issue_alu)")
-(define_reservation "cortex_r4_alu_shift_reg"
- "(cortex_r4_issue_a+cortex_r4_issue_alu)|\
- (cortex_r4_issue_b+cortex_r4_issue_c+\
- cortex_r4_issue_alu)")
-(define_reservation "cortex_r4_mov"
- "cortex_r4_issue_a|(cortex_r4_issue_b+\
- cortex_r4_issue_alu)")
-(define_reservation "cortex_r4_mul" "cortex_r4_issue_a+cortex_r4_issue_alu")
-(define_reservation "cortex_r4_mul_2"
- "(cortex_r4_issue_a+cortex_r4_issue_alu)*2")
-;; Division instructions execute out-of-order with respect to the
-;; rest of the pipeline and only require reservations on their first and
-;; final cycles.
-(define_reservation "cortex_r4_div_9"
- "cortex_r4_issue_a+cortex_r4_issue_alu,\
- nothing*7,\
- cortex_r4_issue_a+cortex_r4_issue_alu")
-(define_reservation "cortex_r4_div_10"
- "cortex_r4_issue_a+cortex_r4_issue_alu,\
- nothing*8,\
- cortex_r4_issue_a+cortex_r4_issue_alu")
-(define_reservation "cortex_r4_load_store"
- "cortex_r4_issue_a+cortex_r4_issue_c")
-(define_reservation "cortex_r4_load_store_2"
- "(cortex_r4_issue_a+cortex_r4_issue_b)*2")
-(define_reservation "cortex_r4_branch" "cortex_r4_issue_b")
-
-;; We assume that all instructions are unconditional.
-
-;; Data processing instructions. Moves without shifts are kept separate
-;; for the purposes of the dual-issue constraints above.
-(define_insn_reservation "cortex_r4_alu" 2
- (and (eq_attr "tune" "cortexr4")
- (and (eq_attr "type" "alu")
- (not (eq_attr "insn" "mov"))))
- "cortex_r4_alu")
-
-(define_insn_reservation "cortex_r4_mov" 2
- (and (eq_attr "tune" "cortexr4")
- (and (eq_attr "type" "alu")
- (eq_attr "insn" "mov")))
- "cortex_r4_mov")
-
-(define_insn_reservation "cortex_r4_alu_shift" 2
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "alu_shift"))
- "cortex_r4_alu")
-
-(define_insn_reservation "cortex_r4_alu_shift_reg" 2
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "alu_shift_reg"))
- "cortex_r4_alu_shift_reg")
-
-;; An ALU instruction followed by an ALU instruction with no early dep.
-(define_bypass 1 "cortex_r4_alu,cortex_r4_alu_shift,cortex_r4_alu_shift_reg,\
- cortex_r4_mov"
- "cortex_r4_alu")
-(define_bypass 1 "cortex_r4_alu,cortex_r4_alu_shift,cortex_r4_alu_shift_reg,\
- cortex_r4_mov"
- "cortex_r4_alu_shift"
- "arm_no_early_alu_shift_dep")
-(define_bypass 1 "cortex_r4_alu,cortex_r4_alu_shift,cortex_r4_alu_shift_reg,\
- cortex_r4_mov"
- "cortex_r4_alu_shift_reg"
- "arm_no_early_alu_shift_value_dep")
-
-;; In terms of availabilities, a consumer mov could theoretically be
-;; issued together with a producer ALU instruction, without stalls.
-;; In practice this cannot happen because mov;add (in that order) is not
-;; eligible for dual issue and furthermore dual issue is not permitted
-;; when a dependency is involved. We therefore note it as latency one.
-;; A mov followed by another of the same is also latency one.
-(define_bypass 1 "cortex_r4_alu,cortex_r4_alu_shift,cortex_r4_alu_shift_reg,\
- cortex_r4_mov"
- "cortex_r4_mov")
-
-;; qadd, qdadd, qsub and qdsub are not currently emitted, and neither are
-;; media data processing instructions nor sad instructions.
-
-;; Multiplication instructions.
-
-(define_insn_reservation "cortex_r4_mul_4" 4
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "mul,smmul"))
- "cortex_r4_mul_2")
-
-(define_insn_reservation "cortex_r4_mul_3" 3
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "smulxy,smulwy,smuad,smusd"))
- "cortex_r4_mul")
-
-(define_insn_reservation "cortex_r4_mla_4" 4
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "mla,smmla,smmls"))
- "cortex_r4_mul_2")
-
-(define_insn_reservation "cortex_r4_mla_3" 3
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "smlaxy,smlawy,smlad,smlsd"))
- "cortex_r4_mul")
-
-(define_insn_reservation "cortex_r4_smlald" 3
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "smlald,smlsld"))
- "cortex_r4_mul")
-
-(define_insn_reservation "cortex_r4_mull" 4
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "smull,umull,umlal,umaal"))
- "cortex_r4_mul_2")
-
-;; A multiply or an MLA with a single-register result, followed by an
-;; MLA with an accumulator dependency, has its result forwarded.
-(define_bypass 2 "cortex_r4_mul_3,cortex_r4_mla_3"
- "cortex_r4_mla_3,cortex_r4_mla_4"
- "arm_mac_accumulator_is_mul_result")
-
-(define_bypass 3 "cortex_r4_mul_4,cortex_r4_mla_4"
- "cortex_r4_mla_3,cortex_r4_mla_4"
- "arm_mac_accumulator_is_mul_result")
-
-;; A multiply followed by an ALU instruction needing the multiply
-;; result only at ALU has lower latency than one needing it at Shift.
-(define_bypass 2 "cortex_r4_mul_3,cortex_r4_mla_3,cortex_r4_smlald"
- "cortex_r4_alu")
-(define_bypass 2 "cortex_r4_mul_3,cortex_r4_mla_3,cortex_r4_smlald"
- "cortex_r4_alu_shift"
- "arm_no_early_alu_shift_dep")
-(define_bypass 2 "cortex_r4_mul_3,cortex_r4_mla_3,cortex_r4_smlald"
- "cortex_r4_alu_shift_reg"
- "arm_no_early_alu_shift_value_dep")
-(define_bypass 3 "cortex_r4_mul_4,cortex_r4_mla_4,cortex_r4_mull"
- "cortex_r4_alu")
-(define_bypass 3 "cortex_r4_mul_4,cortex_r4_mla_4,cortex_r4_mull"
- "cortex_r4_alu_shift"
- "arm_no_early_alu_shift_dep")
-(define_bypass 3 "cortex_r4_mul_4,cortex_r4_mla_4,cortex_r4_mull"
- "cortex_r4_alu_shift_reg"
- "arm_no_early_alu_shift_value_dep")
-
-;; A multiply followed by a mov has one cycle lower latency again.
-(define_bypass 1 "cortex_r4_mul_3,cortex_r4_mla_3,cortex_r4_smlald"
- "cortex_r4_mov")
-(define_bypass 2 "cortex_r4_mul_4,cortex_r4_mla_4,cortex_r4_mull"
- "cortex_r4_mov")
-
-;; We guess that division of A/B using sdiv or udiv, on average,
-;; is performed with B having ten more leading zeros than A.
-;; This gives a latency of nine for udiv and ten for sdiv.
-(define_insn_reservation "cortex_r4_udiv" 9
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "udiv"))
- "cortex_r4_div_9")
-
-(define_insn_reservation "cortex_r4_sdiv" 10
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "insn" "sdiv"))
- "cortex_r4_div_10")
-
-;; Branches. We assume correct prediction.
-
-(define_insn_reservation "cortex_r4_branch" 0
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "branch"))
- "cortex_r4_branch")
-
-;; Call latencies are not predictable. A semi-arbitrary very large
-;; number is used as "positive infinity" so that everything should be
-;; finished by the time of return.
-(define_insn_reservation "cortex_r4_call" 32
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "call"))
- "nothing")
-
-;; Status register access instructions are not currently emitted.
-
-;; Load instructions.
-;; We do not model the "addr_md_3cycle" cases and assume that
-;; accesses following are correctly aligned.
-
-(define_insn_reservation "cortex_r4_load_1_2" 3
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "load1,load2"))
- "cortex_r4_load_store")
-
-(define_insn_reservation "cortex_r4_load_3_4" 4
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "load3,load4"))
- "cortex_r4_load_store_2")
-
-;; If a producing load is followed by an instruction consuming only
-;; as a Normal Reg, there is one fewer cycle of latency.
-
-(define_bypass 2 "cortex_r4_load_1_2"
- "cortex_r4_alu")
-(define_bypass 2 "cortex_r4_load_1_2"
- "cortex_r4_alu_shift"
- "arm_no_early_alu_shift_dep")
-(define_bypass 2 "cortex_r4_load_1_2"
- "cortex_r4_alu_shift_reg"
- "arm_no_early_alu_shift_value_dep")
-
-(define_bypass 3 "cortex_r4_load_3_4"
- "cortex_r4_alu")
-(define_bypass 3 "cortex_r4_load_3_4"
- "cortex_r4_alu_shift"
- "arm_no_early_alu_shift_dep")
-(define_bypass 3 "cortex_r4_load_3_4"
- "cortex_r4_alu_shift_reg"
- "arm_no_early_alu_shift_value_dep")
-
-;; If a producing load is followed by an instruction consuming only
-;; as a Late Reg, there are two fewer cycles of latency. Such consumer
-;; instructions are moves and stores.
-
-(define_bypass 1 "cortex_r4_load_1_2"
- "cortex_r4_mov,cortex_r4_store_1_2,cortex_r4_store_3_4")
-(define_bypass 2 "cortex_r4_load_3_4"
- "cortex_r4_mov,cortex_r4_store_1_2,cortex_r4_store_3_4")
-
-;; If a producer's result is required as the base or offset of a load,
-;; there is an extra cycle latency.
-
-(define_bypass 3 "cortex_r4_alu,cortex_r4_mov,cortex_r4_alu_shift,\
- cortex_r4_alu_shift_reg"
- "cortex_r4_load_1_2,cortex_r4_load_3_4")
-
-(define_bypass 4 "cortex_r4_mul_3,cortex_r4_mla_3,cortex_r4_smlald"
- "cortex_r4_load_1_2,cortex_r4_load_3_4")
-
-(define_bypass 5 "cortex_r4_mul_4,cortex_r4_mla_4,cortex_r4_mull"
- "cortex_r4_load_1_2,cortex_r4_load_3_4")
-
-;; Store instructions.
-
-(define_insn_reservation "cortex_r4_store_1_2" 0
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "store1,store2"))
- "cortex_r4_load_store")
-
-(define_insn_reservation "cortex_r4_store_3_4" 0
- (and (eq_attr "tune" "cortexr4")
- (eq_attr "type" "store3,store4"))
- "cortex_r4_load_store_2")
-