The x18 is a reserved platform register on Darwin and Windows.
x8/w8 seems to be unused in this function though (and same about
x10 and x14), so there's really no reason to use x18 here - just change
the uses of x18/w18 into x8/w8 instead without any further rewrites.
---
libswscale/aarch64/hscale.S | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/libswscale/aarch64/hscale.S b/libswscale/aarch64/hscale.S
index 8743183b51..ae73014a25 100644
--- a/libswscale/aarch64/hscale.S
+++ b/libswscale/aarch64/hscale.S
@@ -22,7 +22,7 @@
function ff_hscale_8_to_15_neon, export=1
sbfiz x7, x6, #1, #32 // filterSize*2 (*2
because int16)
-1: ldr w18, [x5], #4 // filterPos[idx]
+1: ldr w8, [x5], #4 // filterPos[idx]
ldr w0, [x5], #4 // filterPos[idx + 1]
ldr w11, [x5], #4 // filterPos[idx + 2]
ldr w9, [x5], #4 // filterPos[idx + 3]
@@ -34,14 +34,14 @@ function ff_hscale_8_to_15_neon, export=1
movi v1.2D, #0 // val sum part 2 (for
dst[1])
movi v2.2D, #0 // val sum part 3 (for
dst[2])
movi v3.2D, #0 // val sum part 4 (for
dst[3])
- add x17, x3, w18, UXTW // srcp + filterPos[0]
- add x18, x3, w0, UXTW // srcp + filterPos[1]
+ add x17, x3, w8, UXTW // srcp + filterPos[0]
+ add x8, x3, w0, UXTW // srcp + filterPos[1]
add x0, x3, w11, UXTW // srcp + filterPos[2]
add x11, x3, w9, UXTW // srcp + filterPos[3]
mov w15, w6 // filterSize counter
2: ld1 {v4.8B}, [x17], #8 // srcp[filterPos[0] +
{0..7}]
ld1 {v5.8H}, [x16], #16 // load 8x16-bit
filter values, part 1
- ld1 {v6.8B}, [x18], #8 // srcp[filterPos[1] +
{0..7}]
+ ld1 {v6.8B}, [x8], #8 // srcp[filterPos[1] +
{0..7}]
ld1 {v7.8H}, [x12], #16 // load 8x16-bit at
filter+filterSize
uxtl v4.8H, v4.8B // unpack part 1 to
16-bit
smlal v0.4S, v4.4H, v5.4H // v0 accumulates
srcp[filterPos[0] + {0..3}] * filter[{0..3}]
--
2.17.1
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