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ARCv2: lib: memcpy: use local symbols 

Otherwise perf profiles don't charge tme to memcpy

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2015-10-29 19:36:03 +05:30
parent 5a364c2a17
commit ac506b7f22
1 changed files with 26 additions and 26 deletions
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52
arch/arc/lib/memcpy-archs.S
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@ -50,26 +50,26 @@ ENTRY(memcpy)
;;; if size <= 8
cmp r2, 8
bls.d @smallchunk
bls.d @.Lsmallchunk
mov.f lp_count, r2
and.f r4, r0, 0x03
rsub lp_count, r4, 4
lpnz @aligndestination
lpnz @.Laligndestination
;; LOOP BEGIN
ldb.ab r5, [r1,1]
sub r2, r2, 1
stb.ab r5, [r3,1]
aligndestination:
.Laligndestination:
;;; Check the alignment of the source
and.f r4, r1, 0x03
bnz.d @sourceunaligned
bnz.d @.Lsourceunaligned
;;; CASE 0: Both source and destination are 32bit aligned
;;; Convert len to Dwords, unfold x4
lsr.f lp_count, r2, ZOLSHFT
lpnz @copy32_64bytes
lpnz @.Lcopy32_64bytes
;; LOOP START
LOADX (r6, r1)
PREFETCH_READ (r1)
@ -81,25 +81,25 @@ aligndestination:
STOREX (r8, r3)
STOREX (r10, r3)
STOREX (r4, r3)
copy32_64bytes:
.Lcopy32_64bytes:
and.f lp_count, r2, ZOLAND ;Last remaining 31 bytes
smallchunk:
lpnz @copyremainingbytes
.Lsmallchunk:
lpnz @.Lcopyremainingbytes
;; LOOP START
ldb.ab r5, [r1,1]
stb.ab r5, [r3,1]
copyremainingbytes:
.Lcopyremainingbytes:
j [blink]
;;; END CASE 0
sourceunaligned:
.Lsourceunaligned:
cmp r4, 2
beq.d @unalignedOffby2
beq.d @.LunalignedOffby2
sub r2, r2, 1
bhi.d @unalignedOffby3
bhi.d @.LunalignedOffby3
ldb.ab r5, [r1, 1]
;;; CASE 1: The source is unaligned, off by 1
@ -114,7 +114,7 @@ sourceunaligned:
or r5, r5, r6
;; Both src and dst are aligned
lpnz @copy8bytes_1
lpnz @.Lcopy8bytes_1
;; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
@ -131,7 +131,7 @@ sourceunaligned:
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
copy8bytes_1:
.Lcopy8bytes_1:
;; Write back the remaining 16bits
EXTRACT_1 (r6, r5, 16)
@ -141,14 +141,14 @@ copy8bytes_1:
stb.ab r5, [r3, 1]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @copybytewise_1
lpnz @.Lcopybytewise_1
;; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
copybytewise_1:
.Lcopybytewise_1:
j [blink]
unalignedOffby2:
.LunalignedOffby2:
;;; CASE 2: The source is unaligned, off by 2
ldh.ab r5, [r1, 2]
sub r2, r2, 1
@ -159,7 +159,7 @@ unalignedOffby2:
#ifdef __BIG_ENDIAN__
asl.nz r5, r5, 16
#endif
lpnz @copy8bytes_2
lpnz @.Lcopy8bytes_2
;; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
@ -176,7 +176,7 @@ unalignedOffby2:
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
copy8bytes_2:
.Lcopy8bytes_2:
#ifdef __BIG_ENDIAN__
lsr.nz r5, r5, 16
@ -184,14 +184,14 @@ copy8bytes_2:
sth.ab r5, [r3, 2]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @copybytewise_2
lpnz @.Lcopybytewise_2
;; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
copybytewise_2:
.Lcopybytewise_2:
j [blink]
unalignedOffby3:
.LunalignedOffby3:
;;; CASE 3: The source is unaligned, off by 3
;;; Hence, I need to read 1byte for achieve the 32bit alignment
@ -201,7 +201,7 @@ unalignedOffby3:
#ifdef __BIG_ENDIAN__
asl.ne r5, r5, 24
#endif
lpnz @copy8bytes_3
lpnz @.Lcopy8bytes_3
;; LOOP START
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
@ -218,7 +218,7 @@ unalignedOffby3:
st.ab r7, [r3, 4]
st.ab r9, [r3, 4]
copy8bytes_3:
.Lcopy8bytes_3:
#ifdef __BIG_ENDIAN__
lsr.nz r5, r5, 24
@ -226,11 +226,11 @@ copy8bytes_3:
stb.ab r5, [r3, 1]
and.f lp_count, r2, 0x07 ;Last 8bytes
lpnz @copybytewise_3
lpnz @.Lcopybytewise_3
;; LOOP START
ldb.ab r6, [r1,1]
stb.ab r6, [r3,1]
copybytewise_3:
.Lcopybytewise_3:
j [blink]
END(memcpy)