* arm.md (bunordered, bordered, bungt, bunlt, bunge, bunle, buneq)

(bltgt, arm_buneq, arm_bltgt, sunordered, sordered, sungt, sunge) (sunlt, sunle): Enable patterns on VFP. * arm.md (attribute 'type'): Add new types - f_loads floadd, f_stores, f_stored, f_flag, f_cvt. (generic_sched): No-longer used for the arm1020e and arm1022e cores. Include arm1020e.md. * vfp.md (fmstat): New cpu unit. Add an exclusion set between it and the ds and fmac pipelines. Re-work all load and store patterns and all conversion patterns to use new attributes. Adjust reservation descriptions accordingly. * arm1020e.md: New file. * t-arm: Add dependency. From-SVN: r100452
2005-06-01 14:52:16 +00:00 · 2005-06-01 14:52:16 +00:00 · 75fe7b2f40
commit 75fe7b2f40
parent f7f7ac5a61
5 changed files with 478 additions and 50 deletions
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@ -1,3 +1,20 @@
+2005-06-01  Richard Earnshaw  <richard.earnshaw@arm.com>
+
+	* arm.md (bunordered, bordered, bungt, bunlt, bunge, bunle, buneq)
+	(bltgt, arm_buneq, arm_bltgt, sunordered, sordered, sungt, sunge)
+	(sunlt, sunle): Enable patterns on VFP.
+
+	* arm.md (attribute 'type'): Add new types - f_loads floadd, f_stores,
+	f_stored, f_flag, f_cvt.
+	(generic_sched): No-longer used for the arm1020e and arm1022e cores.
+	Include arm1020e.md.
+	* vfp.md (fmstat): New cpu unit.  Add an exclusion set between it and
+	the ds and fmac pipelines.  Re-work all load and store patterns and
+	all conversion patterns to use new attributes.  Adjust reservation
+	descriptions accordingly.
+	* arm1020e.md: New file.
+	* t-arm: Add dependency.
+
 2005-06-01  Jan Hubicka  <jh@suse.cz>

 	* except.c (struct eh_region): Kill unused fields.
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@ -202,10 +202,14 @@
 ;		even on a machine with an fpa.
 ; f_load	a floating point load from memory
 ; f_store	a floating point store to memory
+; f_load[sd]	single/double load from memeory
+; f_store[sd]	single/double store to memeory
+; f_flag	a transfer of co-processor flags to the CPSR
 ; f_mem_r	a transfer of a floating point register to a real reg via mem
 ; r_mem_f	the reverse of f_mem_r
 ; f_2_r		fast transfer float to arm (no memory needed)
 ; r_2_f		fast transfer arm to float
+; f_cvt		convert floating<->integral
 ; branch	a branch
 ; call		a subroutine call
 ; load_byte	load byte(s) from memory to arm registers
@ -222,7 +226,7 @@
 ; mav_dmult	Double multiplies (7 cycle)
 ;
 (define_attr "type"
-	"alu,alu_shift,alu_shift_reg,mult,block,float,fdivx,fdivd,fdivs,fmul,ffmul,farith,ffarith,float_em,f_load,f_store,f_mem_r,r_mem_f,f_2_r,r_2_f,branch,call,load_byte,load1,load2,load3,load4,store1,store2,store3,store4,mav_farith,mav_dmult" 
+	"alu,alu_shift,alu_shift_reg,mult,block,float,fdivx,fdivd,fdivs,fmul,ffmul,farith,ffarith,f_flag,float_em,f_load,f_store,f_loads,f_loadd,f_stores,f_stored,f_mem_r,r_mem_f,f_2_r,r_2_f,f_cvt,branch,call,load_byte,load1,load2,load3,load4,store1,store2,store3,store4,mav_farith,mav_dmult" 
 	(if_then_else 
 	 (eq_attr "insn" "smulxy,smlaxy,smlalxy,smulwy,smlawx,mul,muls,mla,mlas,umull,umulls,umlal,umlals,smull,smulls,smlal,smlals")
 	 (const_string "mult")
@ -313,12 +317,20 @@

 (define_attr "generic_sched" "yes,no"
  (const (if_then_else 
-          (eq_attr "tune" "arm926ejs,arm1026ejs,arm1136js,arm1136jfs") 
+          (eq_attr "tune" "arm926ejs,arm1020e,arm1026ejs,arm1136js,arm1136jfs") 
          (const_string "no")
          (const_string "yes"))))

+(define_attr "generic_vfp" "yes,no"
+  (const (if_then_else
+	  (and (eq_attr "fpu" "vfp")
+	       (eq_attr "tune" "!arm1020e,arm1022e"))
+	  (const_string "yes")
+	  (const_string "no"))))
+
 (include "arm-generic.md")
 (include "arm926ejs.md")
+(include "arm1020e.md")
 (include "arm1026ejs.md")
 (include "arm1136jfs.md")

@ -6963,7 +6975,7 @@
 	(if_then_else (unordered (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNORDERED, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -6973,7 +6985,7 @@
 	(if_then_else (ordered (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (ORDERED, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -6983,7 +6995,7 @@
 	(if_then_else (ungt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNGT, arm_compare_op0, arm_compare_op1);"
 )

@ -6992,7 +7004,7 @@
 	(if_then_else (unlt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNLT, arm_compare_op0, arm_compare_op1);"
 )

@ -7001,7 +7013,7 @@
 	(if_then_else (unge (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNGE, arm_compare_op0, arm_compare_op1);"
 )

@ -7010,7 +7022,7 @@
 	(if_then_else (unle (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNLE, arm_compare_op0, arm_compare_op1);"
 )

@ -7021,7 +7033,7 @@
 	(if_then_else (uneq (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNEQ, arm_compare_op0, arm_compare_op1);"
 )

@ -7030,7 +7042,7 @@
 	(if_then_else (ltgt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (LTGT, arm_compare_op0, arm_compare_op1);"
 )

@ -7044,7 +7056,7 @@
 	(if_then_else (uneq (match_operand 1 "cc_register" "") (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "*
  gcc_assert (!arm_ccfsm_state);

@ -7060,7 +7072,7 @@
 	(if_then_else (ltgt (match_operand 1 "cc_register" "") (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "*
  gcc_assert (!arm_ccfsm_state);

@ -7095,7 +7107,7 @@
 	(if_then_else (uneq (match_operand 1 "cc_register" "") (const_int 0))
 		      (pc)
 		      (label_ref (match_operand 0 "" ""))))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "*
  gcc_assert (!arm_ccfsm_state);

@ -7111,7 +7123,7 @@
 	(if_then_else (ltgt (match_operand 1 "cc_register" "") (const_int 0))
 		      (pc)
 		      (label_ref (match_operand 0 "" ""))))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "*
  gcc_assert (!arm_ccfsm_state);

@ -7217,7 +7229,7 @@
 (define_expand "sunordered"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(unordered:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNORDERED, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7225,7 +7237,7 @@
 (define_expand "sordered"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(ordered:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (ORDERED, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7233,7 +7245,7 @@
 (define_expand "sungt"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(ungt:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNGT, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7241,7 +7253,7 @@
 (define_expand "sunge"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(unge:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNGE, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7249,7 +7261,7 @@
 (define_expand "sunlt"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(unlt:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNLT, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7257,7 +7269,7 @@
 (define_expand "sunle"
  [(set (match_operand:SI 0 "s_register_operand" "")
 	(unle:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
  "operands[1] = arm_gen_compare_reg (UNLE, arm_compare_op0,
 				      arm_compare_op1);"
 )
@ -7268,14 +7280,14 @@
 ; (define_expand "suneq"
 ;   [(set (match_operand:SI 0 "s_register_operand" "")
 ; 	(uneq:SI (match_dup 1) (const_int 0)))]
-;   "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+;   "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
 ;   "gcc_unreachable ();"
 ; )
 ;
 ; (define_expand "sltgt"
 ;   [(set (match_operand:SI 0 "s_register_operand" "")
 ; 	(ltgt:SI (match_dup 1) (const_int 0)))]
-;   "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_FPA"
+;   "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
 ;   "gcc_unreachable ();"
 ; )

--- a/gcc/config/arm/arm1020e.md
+++ b/gcc/config/arm/arm1020e.md
@ -0,0 +1,388 @@
+;; ARM 1020E & ARM 1022E Pipeline Description
+;; Copyright (C) 2005 Free Software Foundation, Inc.
+;; Contributed by Richard Earnshaw (richard.earnshaw@arm.com)
+;;
+;; 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 2, 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 COPYING.  If not, write to the Free
+;; Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.  */
+
+;; These descriptions are based on the information contained in the
+;; ARM1020E Technical Reference Manual, Copyright (c) 2003 ARM
+;; Limited.
+;;
+
+;; This automaton provides a pipeline description for the ARM
+;; 1020E core.
+;;
+;; The model given here assumes that the condition for all conditional
+;; instructions is "true", i.e., that all of the instructions are
+;; actually executed.
+
+(define_automaton "arm1020e")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Pipelines
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; There are two pipelines:
+;; 
+;; - An Arithmetic Logic Unit (ALU) pipeline.
+;;
+;;   The ALU pipeline has fetch, issue, decode, execute, memory, and
+;;   write stages. We only need to model the execute, memory and write
+;;   stages.
+;;
+;; - A Load-Store Unit (LSU) pipeline.
+;;
+;;   The LSU pipeline has decode, execute, memory, and write stages.
+;;   We only model the execute, memory and write stages.
+
+(define_cpu_unit "1020a_e,1020a_m,1020a_w" "arm1020e")
+(define_cpu_unit "1020l_e,1020l_m,1020l_w" "arm1020e")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; ALU Instructions
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; ALU instructions require three cycles to execute, and use the ALU
+;; pipeline in each of the three stages.  The results are available
+;; after the execute stage stage has finished.
+;;
+;; If the destination register is the PC, the pipelines are stalled
+;; for several cycles.  That case is not modeled here.
+
+;; ALU operations with no shifted operand
+(define_insn_reservation "1020alu_op" 1 
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "alu"))
+ "1020a_e,1020a_m,1020a_w")
+
+;; ALU operations with a shift-by-constant operand
+(define_insn_reservation "1020alu_shift_op" 1 
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "alu_shift"))
+ "1020a_e,1020a_m,1020a_w")
+
+;; ALU operations with a shift-by-register operand
+;; These really stall in the decoder, in order to read
+;; the shift value in a second cycle. Pretend we take two cycles in
+;; the execute stage.
+(define_insn_reservation "1020alu_shift_reg_op" 2 
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "alu_shift_reg"))
+ "1020a_e*2,1020a_m,1020a_w")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Multiplication Instructions
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Multiplication instructions loop in the execute stage until the
+;; instruction has been passed through the multiplier array enough
+;; times.
+
+;; The result of the "smul" and "smulw" instructions is not available
+;; until after the memory stage.
+(define_insn_reservation "1020mult1" 2
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "smulxy,smulwy"))
+ "1020a_e,1020a_m,1020a_w")
+
+;; The "smlaxy" and "smlawx" instructions require two iterations through
+;; the execute stage; the result is available immediately following
+;; the execute stage.
+(define_insn_reservation "1020mult2" 2
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "smlaxy,smlalxy,smlawx"))
+ "1020a_e*2,1020a_m,1020a_w")
+
+;; The "smlalxy", "mul", and "mla" instructions require two iterations
+;; through the execute stage; the result is not available until after
+;; the memory stage.
+(define_insn_reservation "1020mult3" 3
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "smlalxy,mul,mla"))
+ "1020a_e*2,1020a_m,1020a_w")
+
+;; The "muls" and "mlas" instructions loop in the execute stage for
+;; four iterations in order to set the flags.  The value result is
+;; available after three iterations.
+(define_insn_reservation "1020mult4" 3
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "muls,mlas"))
+ "1020a_e*4,1020a_m,1020a_w")
+
+;; Long multiply instructions that produce two registers of
+;; output (such as umull) make their results available in two cycles;
+;; the least significant word is available before the most significant
+;; word.  That fact is not modeled; instead, the instructions are
+;; described.as if the entire result was available at the end of the
+;; cycle in which both words are available.
+
+;; The "umull", "umlal", "smull", and "smlal" instructions all take
+;; three iterations through the execute cycle, and make their results
+;; available after the memory cycle.
+(define_insn_reservation "1020mult5" 4
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "umull,umlal,smull,smlal"))
+ "1020a_e*3,1020a_m,1020a_w")
+
+;; The "umulls", "umlals", "smulls", and "smlals" instructions loop in
+;; the execute stage for five iterations in order to set the flags.
+;; The value result is available after four iterations.
+(define_insn_reservation "1020mult6" 4
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "insn" "umulls,umlals,smulls,smlals"))
+ "1020a_e*5,1020a_m,1020a_w")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Load/Store Instructions
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; The models for load/store instructions do not accurately describe
+;; the difference between operations with a base register writeback
+;; (such as "ldm!").  These models assume that all memory references
+;; hit in dcache.
+
+;; LSU instructions require six cycles to execute.  They use the ALU
+;; pipeline in all but the 5th cycle, and the LSU pipeline in cycles
+;; three through six.
+;; Loads and stores which use a scaled register offset or scaled
+;; register pre-indexed addressing mode take three cycles EXCEPT for
+;; those that are base + offset with LSL of 0 or 2, or base - offset
+;; with LSL of zero.  The remainder take 1 cycle to execute.
+;; For 4byte loads there is a bypass from the load stage
+
+(define_insn_reservation "1020load1_op" 2
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "load_byte,load1"))
+ "1020a_e+1020l_e,1020l_m,1020l_w")
+
+(define_insn_reservation "1020store1_op" 0
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "store1"))
+ "1020a_e+1020l_e,1020l_m,1020l_w")
+
+;; A load's result can be stored by an immediately following store
+(define_bypass 1 "1020load1_op" "1020store1_op" "arm_no_early_store_addr_dep")
+
+;; On a LDM/STM operation, the LSU pipeline iterates until all of the
+;; registers have been processed.
+;;
+;; The time it takes to load the data depends on whether or not the
+;; base address is 64-bit aligned; if it is not, an additional cycle
+;; is required.  This model assumes that the address is always 64-bit
+;; aligned.  Because the processor can load two registers per cycle,
+;; that assumption means that we use the same instruction reservations
+;; for loading 2k and 2k - 1 registers.
+;;
+;; The ALU pipeline is decoupled after the first cycle unless there is
+;; a register dependency; the depency is cleared as soon as the LDM/STM
+;; has dealt with the corresponding register.  So for exmple,
+;;  stmia sp, {r0-r3}
+;;  add	r0, r0, #4
+;; will have one fewer stalls than
+;;  stmia sp, {r0-r3}
+;;  add r3, r3, #4
+;;
+;; As with ALU operations, if one of the destination registers is the
+;; PC, there are additional stalls; that is not modeled.
+
+(define_insn_reservation "1020load2_op" 2
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "load2"))
+ "1020a_e+1020l_e,1020l_m,1020l_w")
+
+(define_insn_reservation "1020store2_op" 0
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "store2"))
+ "1020a_e+1020l_e,1020l_m,1020l_w")
+
+(define_insn_reservation "1020load34_op" 3
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "load3,load4"))
+ "1020a_e+1020l_e,1020l_e+1020l_m,1020l_m,1020l_w")
+
+(define_insn_reservation "1020store34_op" 0
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "store3,store4"))
+ "1020a_e+1020l_e,1020l_e+1020l_m,1020l_m,1020l_w")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Branch and Call Instructions
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; Branch instructions are difficult to model accurately.  The ARM
+;; core can predict most branches.  If the branch is predicted
+;; correctly, and predicted early enough, the branch can be completely
+;; eliminated from the instruction stream.  Some branches can
+;; therefore appear to require zero cycles to execute.  We assume that
+;; all branches are predicted correctly, and that the latency is
+;; therefore the minimum value.
+
+(define_insn_reservation "1020branch_op" 0
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "branch"))
+ "1020a_e")
+
+;; The latency for a call is not predictable.  Therefore, we use 32 as
+;; roughly equivalent to positive infinity.
+
+(define_insn_reservation "1020call_op" 32
+ (and (eq_attr "tune" "arm1020e,arm1022e")
+      (eq_attr "type" "call"))
+ "1020a_e*32")
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; VFP
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define_cpu_unit "v10_fmac" "arm1020e")
+
+(define_cpu_unit "v10_ds" "arm1020e")
+
+(define_cpu_unit "v10_fmstat" "arm1020e")
+
+(define_cpu_unit "v10_ls1,v10_ls2,v10_ls3" "arm1020e")
+
+;; fmstat is a serializing instruction.  It will stall the core until
+;; the mac and ds units have completed.
+(exclusion_set "v10_fmac,v10_ds" "v10_fmstat")
+
+(define_attr "vfp10" "yes,no" 
+  (const (if_then_else (and (eq_attr "tune" "arm1020e,arm1022e")
+			    (eq_attr "fpu" "vfp"))
+		       (const_string "yes") (const_string "no"))))
+
+;; The VFP "type" attributes differ from those used in the FPA model.
+;; ffarith	Fast floating point insns, e.g. abs, neg, cpy, cmp.
+;; farith	Most arithmetic insns.
+;; fmul		Double precision multiply.
+;; fdivs	Single precision sqrt or division.
+;; fdivd	Double precision sqrt or division.
+;; f_flag	fmstat operation
+;; f_load	Floating point load from memory.
+;; f_store	Floating point store to memory.
+;; f_2_r	Transfer vfp to arm reg.
+;; r_2_f	Transfer arm to vfp reg.
+
+;; Note, no instruction can issue to the VFP if the core is stalled in the
+;; first execute state.  We model this by using 1020a_e in the first cycle.
+(define_insn_reservation "v10_ffarith" 5
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "ffarith"))
+ "1020a_e+v10_fmac")
+
+(define_insn_reservation "v10_farith" 5
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "farith"))
+ "1020a_e+v10_fmac")
+
+(define_insn_reservation "v10_cvt" 5
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_cvt"))
+ "1020a_e+v10_fmac")
+
+(define_insn_reservation "v10_fmul" 6
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "fmul"))
+ "1020a_e+v10_fmac*2")
+
+(define_insn_reservation "v10_fdivs" 18
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "fdivs"))
+ "1020a_e+v10_ds*14")
+
+(define_insn_reservation "v10_fdivd" 32
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "fdivd"))
+ "1020a_e+v10_fmac+v10_ds*28")
+
+(define_insn_reservation "v10_floads" 4
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_loads"))
+ "1020a_e+1020l_e+v10_ls1,v10_ls2")
+
+;; We model a load of a double as needing all the vfp ls* stage in cycle 1.
+;; This gives the correct mix between single-and double loads where a flds
+;; followed by and fldd will stall for one cycle, but two back-to-back fldd
+;; insns stall for two cycles.
+(define_insn_reservation "v10_floadd" 5
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_loadd"))
+ "1020a_e+1020l_e+v10_ls1+v10_ls2+v10_ls3,v10_ls2+v10_ls3,v10_ls3")
+ 
+;; Moves to/from arm regs also use the load/store pipeline.
+
+(define_insn_reservation "v10_c2v" 4
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "r_2_f"))
+ "1020a_e+1020l_e+v10_ls1,v10_ls2")
+
+(define_insn_reservation "v10_fstores" 1
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_stores"))
+ "1020a_e+1020l_e+v10_ls1,v10_ls2")
+
+(define_insn_reservation "v10_fstored" 1
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_stored"))
+ "1020a_e+1020l_e+v10_ls1+v10_ls2+v10_ls3,v10_ls2+v10_ls3,v10_ls3")
+
+(define_insn_reservation "v10_v2c" 1
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_2_r"))
+ "1020a_e+1020l_e,1020l_m,1020l_w")
+
+(define_insn_reservation "v10_to_cpsr" 2
+ (and (eq_attr "vfp10" "yes")
+      (eq_attr "type" "f_flag"))
+ "1020a_e+v10_fmstat,1020a_e+1020l_e,1020l_m,1020l_w")
+
+;; VFP bypasses
+
+;; There are bypasses for most operations other than store
+
+(define_bypass 3
+ "v10_c2v,v10_floads"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd,v10_cvt")
+
+(define_bypass 4
+ "v10_floadd"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd")
+
+;; Arithmetic to other arithmetic saves a cycle due to forwarding
+(define_bypass 4
+ "v10_ffarith,v10_farith"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd")
+
+(define_bypass 5
+ "v10_fmul"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd")
+
+(define_bypass 17
+ "v10_fdivs"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd")
+
+(define_bypass 31
+ "v10_fdivd"
+ "v10_ffarith,v10_farith,v10_fmul,v10_fdivs,v10_fdivd")
+
+;; VFP anti-dependencies.
+
+;; There is one anti-dependence in the following case (not yet modelled):
+;; - After a store: one extra cycle for both fsts and fstd
+;; Note, back-to-back fstd instructions will overload the load/store datapath 
+;; causing a two-cycle stall.
--- a/gcc/config/arm/t-arm
+++ b/gcc/config/arm/t-arm
@ -3,6 +3,7 @@
 MD_INCLUDES= 	$(srcdir)/config/arm/arm-tune.md \
 		$(srcdir)/config/arm/predicates.md \
 		$(srcdir)/config/arm/arm-generic.md \
+		$(srcdir)/config/arm/arm1020e.md \
 		$(srcdir)/config/arm/arm1026ejs.md \
 		$(srcdir)/config/arm/arm1136jfs.md \
 		$(srcdir)/config/arm/arm926ejs.md \
--- a/gcc/config/arm/vfp.md
+++ b/gcc/config/arm/vfp.md
@ -55,53 +55,63 @@

 (define_cpu_unit "vfp_ls" "vfp11")

+(define_cpu_unit "fmstat" "vfp11")
+
+(exclusion_set "fmac,ds" "fmstat")
+
 ;; The VFP "type" attributes differ from those used in the FPA model.
 ;; ffarith	Fast floating point insns, e.g. abs, neg, cpy, cmp.
 ;; farith	Most arithmetic insns.
 ;; fmul		Double precision multiply.
 ;; fdivs	Single precision sqrt or division.
 ;; fdivd	Double precision sqrt or division.
-;; f_load	Floating point load from memory.
-;; f_store	Floating point store to memory.
+;; f_flag	fmstat operation
+;; f_load[sd]	Floating point load from memory.
+;; f_store[sd]	Floating point store to memory.
 ;; f_2_r	Transfer vfp to arm reg.
 ;; r_2_f	Transfer arm to vfp reg.
+;; f_cvt	Convert floating<->integral

 (define_insn_reservation "vfp_ffarith" 4
- (and (eq_attr "fpu" "vfp")
+ (and (eq_attr "generic_vfp" "yes")
      (eq_attr "type" "ffarith"))
 "fmac")

 (define_insn_reservation "vfp_farith" 8
- (and (eq_attr "fpu" "vfp")
-      (eq_attr "type" "farith"))
+ (and (eq_attr "generic_vfp" "yes")
+      (eq_attr "type" "farith,f_cvt"))
 "fmac")

 (define_insn_reservation "vfp_fmul" 9
- (and (eq_attr "fpu" "vfp")
+ (and (eq_attr "generic_vfp" "yes")
      (eq_attr "type" "fmul"))
 "fmac*2")

 (define_insn_reservation "vfp_fdivs" 19
- (and (eq_attr "fpu" "vfp")
+ (and (eq_attr "generic_vfp" "yes")
      (eq_attr "type" "fdivs"))
 "ds*15")

 (define_insn_reservation "vfp_fdivd" 33
- (and (eq_attr "fpu" "vfp")
+ (and (eq_attr "generic_vfp" "yes")
      (eq_attr "type" "fdivd"))
 "fmac+ds*29")

 ;; Moves to/from arm regs also use the load/store pipeline.
 (define_insn_reservation "vfp_fload" 4
- (and (eq_attr "fpu" "vfp")
-      (eq_attr "type" "f_load,r_2_f"))
+ (and (eq_attr "generic_vfp" "yes")
+      (eq_attr "type" "f_loads,f_loadd,r_2_f"))
 "vfp_ls")

 (define_insn_reservation "vfp_fstore" 4
- (and (eq_attr "fpu" "vfp")
-      (eq_attr "type" "f_load,f_2_r"))
+ (and (eq_attr "generic_vfp" "yes")
+      (eq_attr "type" "f_stores,f_stored,f_2_r"))
 "vfp_ls")

+(define_insn_reservation "vfp_to_cpsr" 4
+ (and (eq_attr "generic_vfp" "yes")
+      (eq_attr "type" "f_flag"))
+ "fmstat,vfp_ls*3")

 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Insn pattern
@ -127,7 +137,7 @@
  flds%?\\t%0, %1\\t%@ int
  fsts%?\\t%1, %0\\t%@ int"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "*,*,load1,store1,r_2_f,f_2_r,ffarith,f_load,f_store")
+   (set_attr "type" "*,*,load1,store1,r_2_f,f_2_r,ffarith,f_loads,f_stores")
   (set_attr "pool_range"     "*,*,4096,*,*,*,*,1020,*")
   (set_attr "neg_pool_range" "*,*,4084,*,*,*,*,1008,*")]
 )
@ -161,7 +171,7 @@
      gcc_unreachable ();
    }
  "
-  [(set_attr "type" "*,load2,store2,r_2_f,f_2_r,ffarith,f_load,f_store")
+  [(set_attr "type" "*,load2,store2,r_2_f,f_2_r,ffarith,f_loadd,f_stored")
   (set_attr "length" "8,8,8,4,4,4,4,4")
   (set_attr "pool_range"     "*,1020,*,*,*,*,1020,*")
   (set_attr "neg_pool_range" "*,1008,*,*,*,*,1008,*")]
@ -186,7 +196,7 @@
  fcpys%?\\t%0, %1
  mov%?\\t%0, %1\\t%@ float"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "r_2_f,f_2_r,ffarith,*,f_load,f_store,load1,store1")
+   (set_attr "type" "r_2_f,f_2_r,ffarith,*,f_loads,f_stores,load1,store1")
   (set_attr "pool_range" "*,*,1020,*,4096,*,*,*")
   (set_attr "neg_pool_range" "*,*,1008,*,4080,*,*,*")]
 )
@ -221,7 +231,7 @@
      }
    }
  "
-  [(set_attr "type" "r_2_f,f_2_r,ffarith,*,load2,store2,f_load,f_store")
+  [(set_attr "type" "r_2_f,f_2_r,ffarith,*,load2,store2,f_loadd,f_stored")
   (set_attr "length" "4,4,8,8,4,4,4,8")
   (set_attr "pool_range" "*,*,1020,*,1020,*,*,*")
   (set_attr "neg_pool_range" "*,*,1008,*,1008,*,*,*")]
@ -572,7 +582,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fcvtds%?\\t%P0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "*truncdfsf2_vfp"
@ -581,7 +591,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fcvtsd%?\\t%0, %P1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "*truncsisf2_vfp"
@ -590,7 +600,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "ftosizs%?\\t%0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "*truncsidf2_vfp"
@ -599,7 +609,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "ftosizd%?\\t%0, %P1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )


@ -609,7 +619,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "ftouizs%?\\t%0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "fixuns_truncdfsi2"
@ -618,7 +628,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "ftouizd%?\\t%0, %P1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )


@ -628,7 +638,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fsitos%?\\t%0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "*floatsidf2_vfp"
@ -637,7 +647,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fsitod%?\\t%P0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )


@ -647,7 +657,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fuitos%?\\t%0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )

 (define_insn "floatunssidf2"
@ -656,7 +666,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fuitod%?\\t%P0, %1"
  [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "f_cvt")]
 )


@ -689,7 +699,7 @@
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "fmstat%?"
  [(set_attr "conds" "set")
-   (set_attr "type" "ffarith")]
+   (set_attr "type" "f_flag")]
 )

 (define_insn_and_split "*cmpsf_split_vfp"
@ -813,7 +823,7 @@
 		      UNSPEC_PUSH_MULT))])]
  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_VFP"
  "* return vfp_output_fstmx (operands);"
-  [(set_attr "type" "f_store")]
+  [(set_attr "type" "f_stored")]
 )