projects / thirdparty / gcc.git / blame
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|---|---|---|
| 191eb16d AK |
1 | ;;- Machine description for GNU compiler -- S/390 / zSeries version. |
| 2 | ;; Subst patterns. | |
| 8d9254fc | 3 | ;; Copyright (C) 2016-2020 Free Software Foundation, Inc. |
| 191eb16d AK |
4 | ;; Contributed by Andreas Krebbel (Andreas.Krebbel@de.ibm.com) |
| 5 | ||
| 6 | ;; This file is part of GCC. | |
| 7 | ||
| 8 | ;; GCC is free software; you can redistribute it and/or modify it under | |
| 9 | ;; the terms of the GNU General Public License as published by the Free | |
| 10 | ;; Software Foundation; either version 3, or (at your option) any later | |
| 11 | ;; version. | |
| 12 | ||
| 13 | ;; GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 14 | ;; WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 | ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 | ;; for more details. | |
| 17 | ||
| 18 | ;; You should have received a copy of the GNU General Public License | |
| 19 | ;; along with GCC; see the file COPYING3. If not see | |
| 20 | ;; <http://www.gnu.org/licenses/>. | |
| 21 | ||
| a9fcf821 | 22 | (define_code_iterator SUBST [rotate ashift lshiftrt ashiftrt]) |
| 674a959c | 23 | (define_mode_iterator DSI_VI [SI DI V2QI V4QI V8QI V16QI V2HI V4HI V8HI V2SI V4SI V2DI]) |
| 191eb16d | 24 | |
| a9fcf821 AK |
25 | ; This adds an explicit CC reg set to an operation while keeping the |
| 26 | ; set for the operation result as well. | |
| 27 | (define_subst "setcc_subst" | |
| 28 | [(set (match_operand:DSI 0 "" "") | |
| 29 | (match_operand:DSI 1 "" "")) | |
| 30 | (clobber (reg:CC CC_REGNUM))] | |
| 31 | "s390_match_ccmode(insn, CCSmode)" | |
| 32 | [(set (reg CC_REGNUM) | |
| 33 | (compare (match_dup 1) (const_int 0))) | |
| 34 | (set (match_dup 0) (match_dup 1))]) | |
| 35 | ||
| 36 | ; Use this in the insn name. | |
| 37 | (define_subst_attr "setcc" "setcc_subst" "" "_cc") | |
| 38 | ||
| 39 | ; This adds an explicit CC reg set to an operation while dropping the | |
| 40 | ; result of the operation. | |
| 41 | (define_subst "cconly_subst" | |
| 42 | [(set (match_operand:DSI 0 "" "") | |
| 43 | (match_operand:DSI 1 "" "")) | |
| 44 | (clobber (reg:CC CC_REGNUM))] | |
| 45 | "s390_match_ccmode(insn, CCSmode)" | |
| 46 | [(set (reg CC_REGNUM) | |
| 47 | (compare (match_dup 1) (const_int 0))) | |
| 48 | (clobber (match_scratch:DSI 0 "=d,d"))]) | |
| 49 | ||
| 50 | (define_subst_attr "cconly" "cconly_subst" "" "_cconly") | |
| 64c744b9 DV |
51 | |
| 52 | ||
| 53 | ; Does transformations to switch between patterns unsing risbg + | |
| 54 | ; clobber CC (z10) and risbgn without clobber (zEC12). | |
| 55 | (define_subst "clobbercc_or_nocc_subst" | |
| 56 | [(set (match_operand 0 "" "") (match_operand 1 "" ""))] | |
| 57 | "" | |
| 58 | [(set (match_dup 0) (match_dup 1)) | |
| 59 | (clobber (reg:CC CC_REGNUM))]) | |
| 60 | ||
| 61 | ; Use this in the insn name to add the target suffix. | |
| 62 | (define_subst_attr "clobbercc_or_nocc" "clobbercc_or_nocc_subst" | |
| 63 | "_nocc" "_clobbercc") | |
| 64 | ||
| 65 | ; Use this in the condition. | |
| 66 | (define_subst_attr "z10_or_zEC12_cond" "clobbercc_or_nocc_subst" | |
| 67 | "TARGET_ZEC12" "TARGET_Z10 && ! TARGET_ZEC12") | |
| 68 | ||
| 69 | ; Use this instead of the risbg instruction. | |
| 70 | (define_subst_attr "risbg_n" "clobbercc_or_nocc_subst" | |
| 71 | "risbgn" "risbg") |