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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/config/arm/cortex-r4.md')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/config/arm/cortex-r4.md | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/config/arm/cortex-r4.md b/gcc-4.2.1-5666.3/gcc/config/arm/cortex-r4.md deleted file mode 100644 index 5f3152409..000000000 --- a/gcc-4.2.1-5666.3/gcc/config/arm/cortex-r4.md +++ /dev/null @@ -1,289 +0,0 @@ -;; 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") - |