;; Scheduling description for z10 (cpu 2097). ;; Copyright (C) 2008-2021 Free Software Foundation, Inc. ;; Contributed by Wolfgang Gellerich (gellerich@de.ibm.com).
; General naming conventions used in this file: ; - The two pipelines are called S and T, respectively. ; - A name ending “_S” or “_T” indicates that something happens in ; (or belongs to) this pipeline. ; - A name ending “_ANY” indicates that something happens in (or belongs ; to) either of the two pipelines. ; - A name ending “_BOTH” indicates that something happens in (or belongs ; to) both pipelines.
;; Automaton and components.
(define_automaton “z10_cpu”)
(define_cpu_unit “z10_e1_S, z10_e1_T” “z10_cpu”) (define_reservation “z10_e1_ANY” “(z10_e1_S | z10_e1_T)”) (define_reservation “z10_e1_BOTH” “(z10_e1_S + z10_e1_T)”)
; Both pipelines can execute a branch instruction, and branch ; instructions can be grouped with all other groupable instructions ; but not with a second branch instruction.
(define_cpu_unit “z10_branch_ANY” “z10_cpu”)
(define_insn_reservation “z10_branch” 4 (and (eq_attr “cpu” “z10”) (eq_attr “type” “branch”)) “z10_branch_ANY + z10_e1_ANY, z10_Gate_ANY”)
; Z10 operand and result forwarding.
; Instructions marked with the attributes as z10_fwd or z10_fr can ; forward a value they load from one of their operants into a register ; if the instruction in the second pipeline reads the same register. ; The second operation must be superscalar. Instructions marked as ; z10_rec or z10_fr can receive a value they read from a register is ; this register gets updated by an instruction in the first pipeline. ; The first instruction must be superscalar.
; Forwarding from z10_fwd and z10_fr to z10_super.
(define_bypass 0 “z10_la_fwd, z10_la_fwd_A1, z10_larl_fwd, z10_larl_fwd_A3,
z10_load_fwd, z10_load_fwd_A3,
z10_other_fwd, z10_other_fwd_A1, z10_other_fwd_A3,
z10_other_fr, z10_other_fr_A3, z10_other_fr_E1,
z10_other_fwd_E1, z10_lr_fr, z10_lr_fr_E1,
z10_int_fwd, z10_int_fwd_A1, z10_int_fwd_A3,
z10_int_fwd_E1, z10_int_fr, z10_int_fr_E1,
z10_int_fr_A3” “z10_other_super, z10_other_super_c_E1, z10_other_super_E1,
z10_int_super, z10_int_super_E1,
z10_lr, z10_store_super” " ! s390_agen_dep_p")
; Forwarding from z10_super to frz10_ and z10_rec.
(define_bypass 0 “z10_other_super, z10_other_super_E1, z10_other_super_c_E1,
z10_int_super, z10_int_super_E1,
z10_larl_super_E1, z10_larl_super,
z10_store_super” “z10_int_fr, z10_int_fr_E1, z10_int_fr_A3,
z10_other_fr, z10_other_fr_A3, z10_lr_fr, z10_lr_fr_E1,
z10_other_fr_E1, z10_store_rec” " ! s390_agen_dep_p")
; Forwarding from z10_fwd and z10_fr to z10_rec and z10_fr.
(define_bypass 0 “z10_la_fwd, z10_la_fwd_A1, z10_larl_fwd, z10_larl_fwd_A3,
z10_load_fwd, z10_load_fwd_A3,
z10_other_fwd, z10_other_fwd_A1, z10_other_fwd_A3,
z10_other_fr, z10_other_fr_A3, z10_other_fr_E1,
z10_other_fwd_E1,
z10_lr_fr, z10_lr_fr_E1,
z10_int_fwd, z10_int_fwd_A1, z10_int_fwd_A3,
z10_int_fwd_E1, z10_int_fr, z10_int_fr_E1,
z10_int_fr_A3” “z10_int_fr, z10_int_fr_E1, z10_int_fr_A3,
z10_other_fr, z10_other_fr_A3, z10_lr_fr, z10_lr_fr_E1,
z10_other_fr_E1, z10_store_rec” " ! s390_agen_dep_p")
; ; Simple insns ;
; Here is the cycle diagram for FXU-executed instructions: ; ... A1 A2 A3 E1 P1 P2 P3 R0 ... ; ^ ^ ^ ; | | updated GPR is available ; | write to GPR ; instruction reads GPR during this cycle
; Variants of z10_int follow.
(define_insn_reservation “z10_int” 6 (and (and (eq_attr “cpu” “z10”) (eq_attr “type” “integer”)) (and (eq_attr “atype” “reg”) (and (and (eq_attr “z10prop” “!z10_super”) (eq_attr “z10prop” “!z10_super_c”)) (and (and (and (and (eq_attr “z10prop” “!z10_super_E1”) (eq_attr “z10prop” “!z10_super_c_E1”)) (eq_attr “z10prop” “!z10_fwd”)) (and (eq_attr “z10prop” “!z10_fwd_A1”) (eq_attr “z10prop” “!z10_fwd_A3”))) (and (and (eq_attr “z10prop” “!z10_fwd_E1”) (eq_attr “z10prop” “!z10_fr”)) (and (eq_attr “z10prop” “!z10_fr_E1”) (eq_attr “z10prop” “!z10_fr_A3”))))))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_super” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (ior (eq_attr “z10prop” “z10_super”) (eq_attr “z10prop” “z10_super_c”))))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_super_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (ior (eq_attr “z10prop” “z10_super_E1”) (eq_attr “z10prop” “z10_super_c_E1”))))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fwd” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fwd”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fwd_A1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fwd_A1”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fwd_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fwd_A3”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fwd_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fwd_E1”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fr” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fr”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fr_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fr_E1”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_int_fr_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (and (eq_attr “atype” “reg”) (eq_attr “z10prop” “z10_fr_A3”)))) “z10_e1_ANY, z10_Gate_ANY”)
; END of z10_int variants
(define_insn_reservation “z10_agen” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “integer”) (eq_attr “atype” “agen”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_lr” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “lr”) (and (eq_attr “z10prop” “!z10_fr”) (eq_attr “z10prop” “!z10_fr_E1”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_lr_fr” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “lr”) (eq_attr “z10prop” “z10_fr”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_lr_fr_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “lr”) (eq_attr “z10prop” “z10_fr_E1”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_la” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “la”) (and (eq_attr “z10prop” “!z10_fwd”) (eq_attr “z10prop” “!z10_fwd_A1”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_la_fwd” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “la”) (eq_attr “z10prop” “z10_fwd”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_la_fwd_A1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “la”) (eq_attr “z10prop” “z10_fwd_A1”))) “z10_e1_ANY, z10_Gate_ANY”)
; larl-type instructions
(define_insn_reservation “z10_larl” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (and (eq_attr “z10prop” “!z10_super_A1”) (and (eq_attr “z10prop” “!z10_fwd”) (and (eq_attr “z10prop” “!z10_fwd_A3”) (and (eq_attr “z10prop” “!z10_super”) (eq_attr “z10prop” “!z10_super_c”)) (and (eq_attr “z10prop” “!z10_super_E1”) (eq_attr “z10prop” “!z10_super_c_E1”))))))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_larl_super” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (and (eq_attr “z10prop” “z10_super”) (eq_attr “z10prop” “z10_super_c”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_larl_fwd” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (eq_attr “z10prop” “z10_fwd”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_larl_fwd_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (eq_attr “z10prop” “z10_fwd_A3”))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_larl_A1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (eq_attr “z10prop” “z10_super_A1”))) “z10_e1_ANY, z10_Gate_ANY”) ; “z10_e1_ANY”)
(define_insn_reservation “z10_larl_super_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “larl”) (ior (eq_attr “z10prop” “z10_super_E1”) (eq_attr “z10prop” “z10_super_c_E1”)))) “z10_e1_ANY, z10_Gate_ANY”) ; “z10_e1_ANY”)
(define_insn_reservation “z10_load” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “load”) (and (eq_attr “z10prop” “!z10_fwd”) (eq_attr “z10prop” “!z10_fwd_A3”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_load_fwd” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “load”) (eq_attr “z10prop” “z10_fwd”))) “z10_e1_ANY, z10_Gate_ANY”) ; “z10_e1_ANY”)
(define_insn_reservation “z10_load_fwd_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “load”) (eq_attr “z10prop” “z10_fwd_A3”))) “z10_e1_ANY, z10_Gate_ANY”) ; “z10_e1_ANY”)
(define_insn_reservation “z10_store” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “store”) (and (eq_attr “z10prop” “!z10_rec”) (and (eq_attr “z10prop” “!z10_super”) (eq_attr “z10prop” “!z10_super_c”))))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_store_super” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “store”) (ior (eq_attr “z10prop” “z10_super”) (eq_attr “z10prop” “z10_super_c”)))) “z10_e1_ANY, z10_Gate_ANY”)
(define_insn_reservation “z10_store_rec” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “store”) (eq_attr “z10prop” “z10_rec”))) “z10_e1_ANY, z10_Gate_ANY”)
; The default_latency is chosen to drain off the pipeline. (define_insn_reservation “z10_call” 14 (and (eq_attr “cpu” “z10”) (eq_attr “type” “jsr”)) “z10_e1_BOTH*4, z10_Gate_BOTH”)
; The default latency is for worst case. CS and CSG take one ; cycle only (i.e. latency would be 6). (define_insn_reservation “z10_sem” 9 (and (eq_attr “cpu” “z10”) (eq_attr “type” “sem”)) “z10_e1_BOTH*5, z10_Gate_ANY”)
(define_insn_reservation “z10_cs” 6 (and (eq_attr “cpu” “z10”) (eq_attr “type” “cs”)) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_vs” 6 (and (eq_attr “cpu” “z10”) (eq_attr “type” “vs”)) “z10_e1_BOTH*4, z10_Gate_BOTH”)
; Load and store multiple. Actual number of cycles ; in unknown at compile.time. (define_insn_reservation “z10_stm” 10 (and (eq_attr “cpu” “z10”) (ior (eq_attr “type” “stm”) (eq_attr “type” “lm”))) “z10_e1_BOTH*4, z10_Gate_BOTH”)
; Subsets of z10_other follow.
(define_insn_reservation “z10_other” 6 (and (and (eq_attr “cpu” “z10”) (eq_attr “type” “other”)) (and (and (eq_attr “z10prop” “!z10_fwd”) (eq_attr “z10prop” “!z10_fwd_A1”)) (and (and (and (eq_attr “z10prop” “!z10_fr_A3”) (eq_attr “z10prop” “!z10_fwd_A3”)) (and (eq_attr “z10prop” “!z10_fr”) (eq_attr “z10prop” “!z10_fr_E1”))) (and (and (and (eq_attr “z10prop” “!z10_super”) (eq_attr “z10prop” “!z10_super_c”)) (eq_attr “z10prop” “!z10_super_c_E1”)) (and (eq_attr “z10prop” “!z10_super_E1”) (eq_attr “z10prop” “!z10_fwd_E1”)))))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fr_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fr_E1”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_super_c_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_super_c_E1”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_super_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_super_E1”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fwd_E1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fwd_E1”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fwd” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fwd”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fwd_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fwd_A3”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fwd_A1” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fwd_A1”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fr” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fr”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_fr_A3” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (eq_attr “z10prop” “z10_fr_A3”))) “z10_e1_BOTH, z10_Gate_BOTH”)
(define_insn_reservation “z10_other_super” 6 (and (eq_attr “cpu” “z10”) (and (eq_attr “type” “other”) (ior (eq_attr “z10prop” “z10_super”) (eq_attr “z10prop” “z10_super_c”)))) “z10_e1_BOTH, z10_Gate_BOTH”)
; END of z10_other subsets.
; ; Floating point insns ;
; Z10 executes the following integer operations in the BFU pipeline.
(define_insn_reservation “z10_mul_sidi” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “imulsi,imuldi,imulhi”)) “z10_e1_BOTH, z10_Gate_FP”)
; Some variants take fewer cycles, but that is not relevant here. (define_insn_reservation “z10_div” 162 (and (eq_attr “cpu” “z10”) (eq_attr “type” “idiv”)) “z10_e1_BOTH*4, z10_Gate_FP”)
; BFP multiplication and general instructions
(define_insn_reservation “z10_fsimpdf” 6 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimpdf,fmuldf,fmadddf”)) “z10_e1_BOTH, z10_Gate_FP”)
(define_insn_reservation “z10_fsimpsf” 6 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimpsf,fmulsf,fmaddsf”)) “z10_e1_BOTH, z10_Gate_FP”)
(define_insn_reservation “z10_fmultf” 52 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fmultf”)) “z10_e1_BOTH*4, z10_Gate_FP”)
(define_insn_reservation “z10_fsimptf” 14 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimptf”)) “z10_e1_BOTH*2, z10_Gate_FP”)
; BFP division
(define_insn_reservation “z10_fdivtf” 113 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fdivtf”)) “z10_e1_T*4, z10_Gate_FP”)
(define_insn_reservation “z10_fdivdf” 41 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fdivdf”)) “z10_e1_T*4, z10_Gate_FP”)
(define_insn_reservation “z10_fdivsf” 34 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fdivsf”)) “z10_e1_T*4, z10_Gate_FP”)
; BFP sqrt
(define_insn_reservation “z10_fsqrtsf” 41 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsqrtsf”)) “z10_e1_T*4, z10_Gate_FP”)
(define_insn_reservation “z10_fsqrtdf” 54 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsqrtdf”)) “z10_e1_T*4, z10_Gate_FP”)
(define_insn_reservation “z10_fsqrtf” 122 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsqrttf”)) “z10_e1_T*4, z10_Gate_FP”)
; BFP load and store
(define_insn_reservation “z10_floadtf” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “floadtf”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_floaddf” 1 (and (eq_attr “cpu” “z10”) (eq_attr “type” “floaddf”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_floadsf” 1 (and (eq_attr “cpu” “z10”) (eq_attr “type” “floadsf”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_fstoredf” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fstoredf,fstoredd”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_fstoresf” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fstoresf,fstoresd”)) “z10_e1_T, z10_Gate_FP”)
; BFP truncate (define_insn_reservation “z10_ftrunctf” 16 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftrunctf”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_ftruncdf” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftruncdf”)) “z10_e1_T, z10_Gate_FP”)
; Conversion between BFP and int. (define_insn_reservation “z10_ftoi” 13 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftoi”)) “z10_e1_T, z10_Gate_FP”)
(define_insn_reservation “z10_itoftf” 14 (and (eq_attr “cpu” “z10”) (eq_attr “type” “itoftf”)) “z10_e1_T*2, z10_Gate_FP”)
(define_insn_reservation “z10_itofsfdf” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “itofdf,itofsf”)) “z10_e1_T, z10_Gate_FP”)
; BFP-related bypasses. There is no bypass for extended mode. (define_bypass 1 “z10_fsimpdf” “z10_fstoredf”) (define_bypass 1 “z10_fsimpsf” “z10_fstoresf”) (define_bypass 1 “z10_floaddf” “z10_fsimpdf, z10_fstoredf”) (define_bypass 1 “z10_floadsf” “z10_fsimpsf, z10_fstoresf”)
; ; insn_reservations for DFP instructions. ;
; Exact number of cycles is not known at compile-time. (define_insn_reservation “z10_fdivddtd” 40 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fdivdd,fdivtd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_ftruncsd” 38 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftruncsd”)) “z10_e1_BOTH*4,z10_Gate_DFU”)
(define_insn_reservation “z10_ftruncdd” 340 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftruncsd”)) “z10_e1_BOTH*4,z10_Gate_DFU”)
(define_insn_reservation “z10_floaddd” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “floaddd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_floadsd” 12 (and (eq_attr “cpu” “z10”) (eq_attr “type” “floadsd”)) “z10_e1_BOTH,z10_Gate_DFU”)
; Exact number of cycles is not known at compile-time. (define_insn_reservation “z10_fmulddtd” 35 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fmuldd,fmultd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_fsimpdd” 17 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimpdd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_fsimpsd” 17 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimpsd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_fsimptd” 18 (and (eq_attr “cpu” “z10”) (eq_attr “type” “fsimptd”)) “z10_e1_BOTH,z10_Gate_DFU”)
(define_insn_reservation “z10_itofdd” 36 (and (eq_attr “cpu” “z10”) (eq_attr “type” “itofdd”)) “z10_e1_BOTH*3,z10_Gate_DFU”)
(define_insn_reservation “z10_itoftd” 49 (and (eq_attr “cpu” “z10”) (eq_attr “type” “itoftd”)) “z10_e1_BOTH*3,z10_Gate_DFU”)
; Exact number of cycles is not known at compile-time. (define_insn_reservation “z10_ftoidfp” 30 (and (eq_attr “cpu” “z10”) (eq_attr “type” “ftoidfp”)) “z10_e1_BOTH*3,z10_Gate_DFU”)
; ; Address-related bypasses ;
; Here is the cycle diagram for address-related bypasses: ; ... G1 G2 G3 A0 A1 A2 A3 E1 P1 P2 P3 R0 ... ; ^ ^ ^ ^ ^ ^ ; | | | | | without bypass, its available AFTER this cycle ; | | | | E1-type bypasses provide the new value AFTER this cycle ; | | | A3-type bypasses provide the new value AFTER this cycle ; | | A1-type bypasses provide the new value AFTER this cycle ; | AGI resolution, actual USE of new value is DURING this cycle ; AGI detection
(define_bypass 3 “z10_larl_A1, z10_la_fwd_A1, z10_other_fwd_A1,
z10_int_fwd_A1” “z10_agen, z10_la, z10_branch, z10_call, z10_load,
z10_store,
z10_cs, z10_stm, z10_other” “s390_agen_dep_p”)
(define_bypass 5 “z10_larl_fwd_A3, z10_load_fwd_A3, z10_other_fwd_A3,
z10_other_fr_A3, z10_int_fwd_A3, z10_int_fr_A3” “z10_agen, z10_la, z10_branch, z10_call, z10_load,
z10_store,
z10_cs, z10_stm, z10_other” “s390_agen_dep_p”)
(define_bypass 6 “z10_other_fr_E1, z10_other_super_c_E1, z10_other_super_E1,
z10_other_fwd_E1,
z10_lr_fr_E1, z10_larl_super_E1,
z10_int_super_E1, z10_int_fwd_E1, z10_int_fr_E1” “z10_agen, z10_la, z10_branch, z10_call, z10_load,
z10_store,
z10_cs, z10_stm, z10_other” “s390_agen_dep_p”)
(define_bypass 9 “z10_int_super, z10_int_fwd, z10_int_fr” “z10_agen, z10_la, z10_branch, z10_call, z10_load,
z10_store,
z10_cs, z10_stm, z10_other” “s390_agen_dep_p”)
; ; Try to avoid transitions between DFU-, BFU- and FXU-executed instructions as there is a ; dispatch delay required. ;
; Declaration for some pseudo-pipeline stages that reflect the ; dispatch gap when issuing an INT/FXU/BFU-executed instruction after ; an instruction executed by a different unit has been executed. The ; approach is that we pretend a pipelined execution of BFU operations ; with as many stages as the gap is long and request that none of ; these stages is busy when issuing a FXU- or DFU-executed ; instruction. Similar for FXU- and DFU-executed instructions.
; Declaration for FPU stages. (define_cpu_unit “z10_f0, z10_f1, z10_f2, z10_f3, z10_f4, z10_f5, z10_f6,
z10_f7, z10_f8, z10_f9, z10_f10, z10_f11, z10_f12” “z10_cpu”) (define_reservation “z10_FP_PP” “z10_f0, z10_f1, z10_f2, z10_f3, z10_f4,
z10_f5, z10_f6, z10_f7, z10_f8, z10_f9, z10_f10, z10_f11,
z10_f12”)
; Declaration for FXU stages. (define_cpu_unit “z10_S1, z10_S2, z10_S3, z10_S4, z10_S5, z10_S6” “z10_cpu”) (define_cpu_unit “z10_T1, z10_T2, z10_T3, z10_T4, z10_T5, z10_T6” “z10_cpu”) (define_reservation “z10_INT_PP” “z10_S1 | z10_T1, z10_S2 | z10_T2, z10_S3
| z10_T3, z10_S4 | z10_T4, z10_S5 |
z10_T5, z10_S6 | z10_T6”)
; Declaration for DFU stages. (define_cpu_unit “z10_d0, z10_d1, z10_d2, z10_d3, z10_d4, z10_d5, z10_d6” “z10_cpu”) (define_reservation “z10_DFU_PP” “z10_d0, z10_d1, z10_d2, z10_d3, z10_d4,
z10_d5, z10_d6”)
; Pseudo-units representing whether the respective unit is available ; in the sense that using it does not cause a dispatch delay.
(define_cpu_unit “z10_S_avail, z10_T_avail, z10_FP_avail, z10_DFU_avail” “z10_cpu”)
(absence_set “z10_FP_avail” “z10_S1, z10_S2, z10_S3, z10_S4, z10_S5, z10_S6, z10_T1, z10_T2, z10_T3, z10_T4,
z10_T5, z10_T6,
z10_d0, z10_d1, z10_d2, z10_d3, z10_d4, z10_d5, z10_d6”)
(absence_set “z10_S_avail,z10_T_avail” “z10_f0, z10_f1, z10_f2, z10_f3, z10_f4, z10_f5, z10_f6, z10_f7,
z10_f8, z10_f9, z10_f10, z10_f11, z10_f12,
z10_d0, z10_d1, z10_d2, z10_d3, z10_d4, z10_d5, z10_d6”)
(absence_set “z10_DFU_avail” “z10_S1, z10_S2, z10_S3, z10_S4, z10_S5, z10_S6, z10_T1, z10_T2, z10_T3, z10_T4,
z10_T5, z10_T6,
z10_f0, z10_f1, z10_f2, z10_f3, z10_f4, z10_f5, z10_f6, z10_f7,
z10_f8, z10_f9, z10_f10, z10_f11, z10_f12”)
; Pseudo-units to be used in insn_reservations.
(define_reservation “z10_Gate_ANY” “((z10_S_avail | z10_T_avail), z10_INT_PP)”) (define_reservation “z10_Gate_BOTH” “((z10_S_avail + z10_T_avail), z10_INT_PP)”)
(define_reservation “z10_Gate_FP” “z10_FP_avail, z10_FP_PP”)
(define_reservation “z10_Gate_DFU” “z10_DFU_avail, z10_DFU_PP”)