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* Move compare peephole2 to a better place. 

From-SVN: r163645
This commit is contained in:
Uros Bizjak 2010-08-30 15:40:36 +02:00
parent 66194a9876
commit 3727f43413
1 changed files with 17 additions and 18 deletions
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35
gcc/config/i386/i386.md
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@ -17170,24 +17170,6 @@
(set (reg:SI SP_REG) (plus:SI (reg:SI SP_REG) (const_int 4)))])]
"")
;; Convert compares with 1 to shorter inc/dec operations when CF is not
;; required and register dies. Similarly for 128 to -128.
(define_peephole2
[(set (match_operand 0 "flags_reg_operand" "")
(match_operator 1 "compare_operator"
[(match_operand 2 "register_operand" "")
(match_operand 3 "const_int_operand" "")]))]
"(((!TARGET_FUSE_CMP_AND_BRANCH || optimize_insn_for_size_p ())
&& incdec_operand (operands[3], GET_MODE (operands[3])))
|| (!TARGET_FUSE_CMP_AND_BRANCH
&& INTVAL (operands[3]) == 128))
&& ix86_match_ccmode (insn, CCGCmode)
&& peep2_reg_dead_p (1, operands[2])"
[(parallel [(set (match_dup 0)
(match_op_dup 1 [(match_dup 2) (match_dup 3)]))
(clobber (match_dup 2))])]
"")
(define_peephole2
[(match_scratch:DI 0 "r")
(parallel [(set (reg:DI SP_REG) (plus:DI (reg:DI SP_REG) (const_int -8)))
@ -17303,6 +17285,23 @@
(set (reg:DI SP_REG) (plus:DI (reg:DI SP_REG) (const_int 8)))])]
"")
;; Convert compares with 1 to shorter inc/dec operations when CF is not
;; required and register dies. Similarly for 128 to -128.
(define_peephole2
[(set (match_operand 0 "flags_reg_operand" "")
(match_operator 1 "compare_operator"
[(match_operand 2 "register_operand" "")
(match_operand 3 "const_int_operand" "")]))]
"(((!TARGET_FUSE_CMP_AND_BRANCH || optimize_insn_for_size_p ())
&& incdec_operand (operands[3], GET_MODE (operands[3])))
|| (!TARGET_FUSE_CMP_AND_BRANCH
&& INTVAL (operands[3]) == 128))
&& ix86_match_ccmode (insn, CCGCmode)
&& peep2_reg_dead_p (1, operands[2])"
[(parallel [(set (match_dup 0)
(match_op_dup 1 [(match_dup 2) (match_dup 3)]))
(clobber (match_dup 2))])])
;; Convert imul by three, five and nine into lea
(define_peephole2
[(parallel