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2003-04-05  Andrew Pinski  <apinski@apple.com>

        * config/rs6000/rs6000.c (addrs_ok_for_quad_peep): Allow addr2
        reg with reg1 == reg2 and offset1 = -8.

2003-04-05  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/rs6000.c (rs6000_rtx_costs): Halve Power4
        multiply costs.  Correct Power4 divide costs.
        * config/rs6000/power4.md: Restore multiply and FP latency.

From-SVN: r65274
This commit is contained in:
David Edelsohn 2003-04-05 12:08:00 -05:00
parent ff95551244
commit 984e25aca8
3 changed files with 31 additions and 11 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2003-04-05 Andrew Pinski <apinski@apple.com>
* config/rs6000/rs6000.c (addrs_ok_for_quad_peep): Allow addr2
reg with reg1 == reg2 and offset1 = -8.
2003-04-05 David Edelsohn <edelsohn@gnu.org>
* config/rs6000/rs6000.c (rs6000_rtx_costs): Halve Power4
multiply costs. Correct Power4 divide costs.
* config/rs6000/power4.md: Restore multiply and FP latency.
2003-04-05 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* alias.c (find_base_term): Export.

14
gcc/config/rs6000/power4.md
View File

@ -104,7 +104,7 @@
"(du1_power4+du2_power4+du3_power4+du4_power4),\
iu1_power4,lsu2_power4+iu1_power4,nothing,nothing,iu2_power4")
(define_insn_reservation "power4-load-update-indexed" 4 ; 3
(define_insn_reservation "power4-load-update-indexed" 3
(and (eq_attr "type" "load_ux")
(eq_attr "cpu" "power4"))
"du1_power4+du2_power4+du3_power4+du4_power4,\
@ -197,7 +197,7 @@
(define_bypass 4 "power4-compare" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr")
(define_insn_reservation "power4-lmul-cmp" 8 ; 7
(define_insn_reservation "power4-lmul-cmp" 7
(and (eq_attr "type" "lmul_compare")
(eq_attr "cpu" "power4"))
"(du1_power4+du2_power4,iu1_power4*6,iu2_power4)\
@ -207,7 +207,7 @@
(define_bypass 10 "power4-lmul-cmp" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr")
(define_insn_reservation "power4-imul-cmp" 6 ; 5
(define_insn_reservation "power4-imul-cmp" 5
(and (eq_attr "type" "imul_compare")
(eq_attr "cpu" "power4"))
"(du1_power4+du2_power4,iu1_power4*4,iu2_power4)\
@ -217,7 +217,7 @@
(define_bypass 8 "power4-imul-cmp" "power4-branch,power4-crlogical,power4-delayedcr,power4-mfcr")
(define_insn_reservation "power4-lmul" 8 ; 7
(define_insn_reservation "power4-lmul" 7
(and (eq_attr "type" "lmul")
(eq_attr "cpu" "power4"))
"(du1_power4,iu1_power4*6)\
@ -227,7 +227,7 @@
; |(du3_power4,nothing,iu2_power4*6)\
; |(du4_power4,nothing,iu2_power4*6)")
(define_insn_reservation "power4-imul" 6 ; 5
(define_insn_reservation "power4-imul" 5
(and (eq_attr "type" "imul")
(eq_attr "cpu" "power4"))
"(du1_power4,iu1_power4*4)\
@ -237,7 +237,7 @@
; |(du3_power4,nothing,iu2_power4*4)\
; |(du4_power4,nothing,iu1_power4*4)")
(define_insn_reservation "power4-imul3" 5 ; 4
(define_insn_reservation "power4-imul3" 4
(and (eq_attr "type" "imul2,imul3")
(eq_attr "cpu" "power4"))
"(du1_power4,iu1_power4*3)\
@ -305,7 +305,7 @@
"du1_power4,iu1_power4")
; Basic FP latency is 6 cycles
(define_insn_reservation "power4-fp" 7 ; 6
(define_insn_reservation "power4-fp" 6
(and (eq_attr "type" "fp,dmul")
(eq_attr "cpu" "power4"))
"fpq_power4")

17
gcc/config/rs6000/rs6000.c
View File

@ -7331,7 +7331,11 @@ addrs_ok_for_quad_peep (addr1, addr2)
offset1 = 0;
}
/* Make sure the second address is a (mem (plus (reg) (const_int))). */
/* Make sure the second address is a (mem (plus (reg) (const_int)))
or if it is (mem (reg)) then make sure that offset1 is -8 and the same
register as addr1. */
if (offset1 == -8 && GET_CODE (addr2) == REG && reg1 == REGNO (addr2))
return 1;
if (GET_CODE (addr2) != PLUS)
return 0;
@ -13744,8 +13748,8 @@ rs6000_rtx_costs (x, code, outer_code, total)
case PROCESSOR_POWER4:
*total = (GET_CODE (XEXP (x, 1)) != CONST_INT
? GET_MODE (XEXP (x, 1)) != DImode
? COSTS_N_INSNS (5) : COSTS_N_INSNS (7)
: COSTS_N_INSNS (4));
? COSTS_N_INSNS (3) : COSTS_N_INSNS (4)
: COSTS_N_INSNS (2));
return true;
default:
@ -13807,7 +13811,6 @@ rs6000_rtx_costs (x, code, outer_code, total)
case PROCESSOR_PPC620:
case PROCESSOR_PPC630:
case PROCESSOR_POWER4:
*total = (GET_MODE (XEXP (x, 1)) != DImode
? COSTS_N_INSNS (21)
: COSTS_N_INSNS (37));
@ -13823,6 +13826,12 @@ rs6000_rtx_costs (x, code, outer_code, total)
*total = COSTS_N_INSNS (23);
return true;
case PROCESSOR_POWER4:
*total = (GET_MODE (XEXP (x, 1)) != DImode
? COSTS_N_INSNS (18)
: COSTS_N_INSNS (34));
return true;
default:
abort ();
}