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authorDan Albert <danalbert@google.com>2015-06-17 11:09:54 -0700
committerDan Albert <danalbert@google.com>2015-06-17 14:15:22 -0700
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Delete old versions of GCC.
Change-Id: I710f125d905290e1024cbd67f48299861790c66c
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-;; Pipeline description for the AppliedMicro Titan core.
-;; Copyright (C) 2010 Free Software Foundation, Inc.
-;; Contributed by Theobroma Systems Design und Consulting GmbH
-;;
-;; This file is part of GCC.
-;;
-;; GCC is free software; you can redistribute it and/or modify it
-;; under the terms of the GNU General Public License as published
-;; by the Free Software Foundation; either version 3, or (at your
-;; option) any later version.
-;;
-;; 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 COPYING3. If not see
-;; <http://www.gnu.org/licenses/>.
-
-;; AppliedMicro Titan core complex
-
-(automata_option "progress")
-
-(define_automaton "titan_core,titan_fpu,titan_fxu,titan_bpu,titan_lsu")
-(define_cpu_unit "titan_issue_0,titan_issue_1" "titan_core")
-
-;; Some useful abbreviations.
-(define_reservation "titan_issue" "titan_issue_0|titan_issue_1")
-
-;; === FXU scheduling ===
-
-(define_cpu_unit "titan_fxu_sh,titan_fxu_wb" "titan_fxu")
-
-;; The 1-cycle adder executes add, addi, subf, neg, compare and trap
-;; instructions. It provides its own, dedicated result-bus, so we
-;; don't need the titan_fxu_wb reservation to complete.
-(define_insn_reservation "titan_fxu_adder" 1
- (and (eq_attr "type" "cmp,fast_compare,trap")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh")
-
-;; Keep the titan_imul and titan_mulhw (half-word) rules in order, to
-;; ensure the proper match: the half-word instructions are tagged as
-;; imul3 only, whereas regular multiplys will always carry a imul tag.
-
-(define_insn_reservation "titan_imul" 5
- (and (eq_attr "type" "imul,imul2,imul_compare")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh,nothing*5,titan_fxu_wb")
-
-(define_insn_reservation "titan_mulhw" 4
- (and (eq_attr "type" "imul3")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh,nothing*4,titan_fxu_wb")
-
-(define_bypass 2 "titan_mulhw" "titan_mulhw")
-
-(define_insn_reservation "titan_fxu_shift_and_rotate" 2
- (and (eq_attr "type" "insert_word,shift,var_shift_rotate,cntlz")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh,nothing*2,titan_fxu_wb")
-
-;; We model the divider for the worst-case (i.e. a full 32-bit
-;; divide). To model the bypass for byte-wise completion, a
-;; define_bypass with a guard-function could be used... however, this
-;; would be an optimization of doubtful value, as a large number of
-;; divides will operate on 32-bit variables.
-
-;; To avoid an unmanagably large automata (generating the automata
-;; would require well over 2GB in memory), we don't model the shared
-;; result bus on this one. The divider-pipeline is thus modeled
-;; through its latency and initial disptach bottlenecks (i.e. issue
-;; slots and fxu scheduler availability)
-(define_insn_reservation "titan_fxu_div" 34
- (and (eq_attr "type" "idiv")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh")
-
-(define_insn_reservation "titan_fxu_alu" 1
- (and (eq_attr "type" "integer,exts")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fxu_sh,nothing,titan_fxu_wb")
-
-;; === BPU scheduling ===
-
-(define_cpu_unit "titan_bpu_sh" "titan_bpu")
-
-(define_insn_reservation "titan_bpu" 2
- (and (eq_attr "type" "branch,jmpreg,cr_logical,delayed_cr")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_bpu_sh")
-
-;; === LSU scheduling ===
-
-(define_cpu_unit "titan_lsu_sh" "titan_lsu")
-
-;; Loads.
-(define_insn_reservation "titan_lsu_load" 3
- (and (eq_attr "type" "load,load_ext,load_ext_u,load_ext_ux,load_ux,load_u,\
- load_l,sync")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_lsu_sh")
-
-(define_insn_reservation "titan_lsu_fpload" 12
- (and (eq_attr "type" "fpload,fpload_ux,fpload_u")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_lsu_sh")
-
-;; Note that the isync is not clearly placed within any execution
-;; unit. We've made the assumption that it will be running out of the
-;; LSU, as msync is also executed within the LSU.
-(define_insn_reservation "titan_lsu_sync" 20
- (and (eq_attr "type" "sync")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_lsu_sh*20")
-
-;; Stores.
-(define_insn_reservation "titan_lsu_store" 12
- (and (eq_attr "type" "store,store_ux,store_u,store_c")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_lsu_sh")
-
-(define_insn_reservation "titan_lsu_fpstore" 12
- (and (eq_attr "type" "fpstore,fpstore_ux,fpstore_u")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_lsu_sh")
-
-;; === FPU scheduling ===
-
-;; In order to keep the automaton for the Titan FPU efficient and
-;; maintainable, we've kept in as concise as possible and created a
-;; mapping for the main "choke points" only instead of modelling the
-;; overall flow of instructions through the FP-pipeline(s).
-
-;; The key elements modelled are:
-;; * each FP-instruction takes up one of the two issue slots
-;; * the FPU runs at half the core frequency
-;; * divides are not pipelined (but execute in a separate unit)
-;; * the FPU has a shared result bus for all its units
-
-(define_cpu_unit "titan_fp0,titan_fpdiv,titan_fpwb" "titan_fpu")
-
-(define_insn_reservation "titan_fp_div_double" 72
- (and (eq_attr "type" "ddiv")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fpdiv*72,titan_fpwb")
-
-(define_insn_reservation "titan_fp_div_single" 46
- (and (eq_attr "type" "sdiv")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fpdiv*46,titan_fpwb")
-
-(define_insn_reservation "titan_fp_single" 12
- (and (eq_attr "fp_type" "fp_addsub_s,fp_mul_s,fp_maddsub_s")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fp0*2,nothing*10,titan_fpwb")
-
-;; Make sure the "titan_fp" rule stays last, as it's a catch all for
-;; double-precision and unclassified (e.g. fsel) FP-instructions
-(define_insn_reservation "titan_fp" 10
- (and (eq_attr "type" "fpcompare,fp,dmul")
- (eq_attr "cpu" "titan"))
- "titan_issue,titan_fp0*2,nothing*8,titan_fpwb")
-
-;; Please note, that the non-pipelined FP-instructions "mcrfs",
-;; "mtfsb0[.]", "mtfsb1[.]", "mtfsf[.]", "mtfsfi[.]" are not
-;; accessible from regular language constructs (i.e. they are not used
-;; by the code generator, except for special purpose sequences defined
-;; in rs6000.md), no special provisions are made for these.
-