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alpha: Fix typo in ev6-copy_user.S

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Patch 8525023121 introduced a typo.

That said, the identity AND insns added by that patch are more
clearly written as MOV.  At the same time, re-schedule the ev6
version so that the first dispatch can execute in parallel.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Richard Henderson 2017-06-23 14:20:01 -07:00 committed by Matt Turner
parent 4758ce82e6
commit 4606f68faf
2 changed files with 5 additions and 4 deletions
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2
arch/alpha/lib/copy_user.S
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@ -34,7 +34,7 @@
.ent __copy_user
__copy_user:
.prologue 0
and $18,$18,$0
mov $18,$0
and $16,7,$3
beq $0,$35
beq $3,$36

7
arch/alpha/lib/ev6-copy_user.S
View File

@ -45,9 +45,10 @@
# Pipeline info: Slotting & Comments
__copy_user:
.prologue 0
andq $18, $18, $0
subq $18, 32, $1 # .. E .. .. : Is this going to be a small copy?
beq $0, $zerolength # U .. .. .. : U L U L
mov $18, $0 # .. .. .. E
subq $18, 32, $1 # .. .. E. .. : Is this going to be a small copy?
nop # .. E .. ..
beq $18, $zerolength # U .. .. .. : U L U L
and $16,7,$3 # .. .. .. E : is leading dest misalignment
ble $1, $onebyteloop # .. .. U .. : 1st branch : small amount of data