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(peepholes for two DF load/store): New peepholes.

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From-SVN: r8517
This commit is contained in:
Richard Kenner 1994-11-18 19:16:06 -05:00
parent 35068b435f
commit 4c70a4f326
1 changed files with 24 additions and 0 deletions
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24
gcc/config/rs6000/rs6000.md
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@ -4436,6 +4436,30 @@
"@
stfdux %3,%0,%2
stfdu %3,%2(%0)")
;; Peephole to convert two consecutive FP loads or stores into lfq/stfq.
(define_peephole
[(set (match_operand:DF 0 "gpc_reg_operand" "=f")
(match_operand:DF 1 "memory_operand" ""))
(set (match_operand:DF 2 "gpc_reg_operand" "=f")
(match_operand:DF 3 "memory_operand" ""))]
"TARGET_POWER2
&& registers_ok_for_quad_peep (operands[0], operands[2])
&& ! MEM_VOLATILE_P (operands[1]) && ! MEM_VOLATILE_P (operands[3])
&& addrs_ok_for_quad_peep (XEXP (operands[1], 0), XEXP (operands[3], 0))"
"lfq%U1%X1 %0,%1")
(define_peephole
[(set (match_operand:DF 0 "memory_operand" "")
(match_operand:DF 1 "gpc_reg_operand" "f"))
(set (match_operand:DF 2 "memory_operand" "")
(match_operand:DF 3 "gpc_reg_operand" "f"))]
"TARGET_POWER2
&& registers_ok_for_quad_peep (operands[1], operands[3])
&& ! MEM_VOLATILE_P (operands[0]) && ! MEM_VOLATILE_P (operands[2])
&& addrs_ok_for_quad_peep (XEXP (operands[0], 0), XEXP (operands[2], 0))"
"stfq%U0%X0 %1,%0")
;; Next come insns related to the calling sequence.
;;