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re PR target/84369 (test case gcc.dg/sms-10.c fails on power9)

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PR target/84369
	* config/rs6000/power9.md: Add store forwarding bypass.

From-SVN: r270394
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Pat Haugen 2019-04-16 15:58:02 +00:00 committed by Pat Haugen
parent ee06f6463a
commit 590df85d1c
2 changed files with 8 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-04-16 Pat Haugen <pthaugen@us.ibm.com>
PR target/84369
* config/rs6000/power9.md: Add store forwarding bypass.
2019-04-16 Alexandre Oliva <aoliva@redhat.com>
PR debug/89528

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gcc/config/rs6000/power9.md
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@ -236,6 +236,9 @@
(eq_attr "cpu" "power9"))
"DU_super_power9,LSU_pair_power9")
; Store forwarding latency is 6
(define_bypass 6 "power9-*store*" "power9-*load*")
(define_insn_reservation "power9-larx" 4
(and (eq_attr "type" "load_l")
(eq_attr "cpu" "power9"))