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s390.md: Add a splitter for NOT rtx. 

2014-04-11  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* config/s390/s390.md: Add a splitter for NOT rtx.

From-SVN: r209295
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Andreas Krebbel 2014-04-11 10:42:27 +00:00 committed by Andreas Krebbel
parent 8f0ad2e592
commit 3c91f126f4
2 changed files with 19 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2014-04-11 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.md: Add a splitter for NOT rtx.
2014-04-11 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/60663

15
gcc/config/s390/s390.md
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@ -7001,6 +7001,21 @@
""
"s390_expand_logical_operator (XOR, <MODE>mode, operands); DONE;")
; Combine replaces (xor (x) (const_int -1)) with (not (x)) when doing
; simplifications. So its better to have something matching.
(define_split
[(set (match_operand:INT 0 "nonimmediate_operand" "")
(not:INT (match_operand:INT 1 "nonimmediate_operand" "")))]
""
[(parallel
[(set (match_dup 0) (xor:INT (match_dup 1) (match_dup 2)))
(clobber (reg:CC CC_REGNUM))])]
{
operands[2] = constm1_rtx;
if (!s390_logical_operator_ok_p (operands))
FAIL;
})
;
; xordi3 instruction pattern(s).
;