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Commit 6d555466 authored by fbarchard@google.com's avatar fbarchard@google.com
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scale 64 bit fix for warning on ios where int width doesnt match %2 size which… 

scale 64 bit fix for warning on ios where int width doesnt match %2 size which is 64 bit by default.  change size to explicitely 32 bit with %w2.
BUG=437
TESTED=try bots
R=bcornell@google.com

Review URL: https://webrtc-codereview.appspot.com/43339004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1398 16f28f9a-4ce2-e073-06de-1de4eb20be90
parent e8c90c31
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Showing with 26 additions and 26 deletions
source/scale_neon64.cc
View file @ 6d555466
...@@ -27,8 +27,8 @@ void ScaleRowDown2_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -27,8 +27,8 @@ void ScaleRowDown2_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"1: \n" "1: \n"
// load even pixels into v0, odd into v1 // load even pixels into v0, odd into v1
MEMACCESS(0) MEMACCESS(0)
"ld2 {v0.16b,v1.16b}, [%0], #32 \n" "ld2 {v0.16b,v1.16b}, [%0], #32 \n"
"subs %2, %2, #16 \n" // 16 processed per loop "subs %w2, %w2, #16 \n" // 16 processed per loop
MEMACCESS(1) MEMACCESS(1)
"st1 {v1.16b}, [%1], #16 \n" // store odd pixels "st1 {v1.16b}, [%1], #16 \n" // store odd pixels
"b.gt 1b \n" "b.gt 1b \n"
...@@ -47,7 +47,7 @@ void ScaleRowDown2Linear_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -47,7 +47,7 @@ void ScaleRowDown2Linear_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"1: \n" "1: \n"
MEMACCESS(0) MEMACCESS(0)
"ld1 {v0.16b,v1.16b}, [%0], #32 \n" // load pixels and post inc "ld1 {v0.16b,v1.16b}, [%0], #32 \n" // load pixels and post inc
"subs %2, %2, #16 \n" // 16 processed per loop "subs %w2, %w2, #16 \n" // 16 processed per loop
"uaddlp v0.8h, v0.16b \n" // add adjacent "uaddlp v0.8h, v0.16b \n" // add adjacent
"uaddlp v1.8h, v1.16b \n" "uaddlp v1.8h, v1.16b \n"
"rshrn v0.8b, v0.8h, #1 \n" // downshift, round and pack "rshrn v0.8b, v0.8h, #1 \n" // downshift, round and pack
...@@ -74,7 +74,7 @@ void ScaleRowDown2Box_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -74,7 +74,7 @@ void ScaleRowDown2Box_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"ld1 {v0.16b,v1.16b}, [%0], #32 \n" // load row 1 and post inc "ld1 {v0.16b,v1.16b}, [%0], #32 \n" // load row 1 and post inc
MEMACCESS(1) MEMACCESS(1)
"ld1 {v2.16b, v3.16b}, [%1], #32 \n" // load row 2 and post inc "ld1 {v2.16b, v3.16b}, [%1], #32 \n" // load row 2 and post inc
"subs %3, %3, #16 \n" // 16 processed per loop "subs %w3, %w3, #16 \n" // 16 processed per loop
"uaddlp v0.8h, v0.16b \n" // row 1 add adjacent "uaddlp v0.8h, v0.16b \n" // row 1 add adjacent
"uaddlp v1.8h, v1.16b \n" "uaddlp v1.8h, v1.16b \n"
"uadalp v0.8h, v2.16b \n" // row 2 add adjacent + row1 "uadalp v0.8h, v2.16b \n" // row 2 add adjacent + row1
...@@ -99,7 +99,7 @@ void ScaleRowDown4_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -99,7 +99,7 @@ void ScaleRowDown4_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"1: \n" "1: \n"
MEMACCESS(0) MEMACCESS(0)
"ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0
"subs %2, %2, #8 \n" // 8 processed per loop "subs %w2, %w2, #8 \n" // 8 processed per loop
MEMACCESS(1) MEMACCESS(1)
"st1 {v2.8b}, [%1], #8 \n" "st1 {v2.8b}, [%1], #8 \n"
"b.gt 1b \n" "b.gt 1b \n"
...@@ -126,7 +126,7 @@ asm volatile ( ...@@ -126,7 +126,7 @@ asm volatile (
"ld1 {v2.16b}, [%3], #16 \n" "ld1 {v2.16b}, [%3], #16 \n"
MEMACCESS(5) MEMACCESS(5)
"ld1 {v3.16b}, [%4], #16 \n" "ld1 {v3.16b}, [%4], #16 \n"
"subs %5, %5, #4 \n" "subs %w5, %w5, #4 \n"
"uaddlp v0.8h, v0.16b \n" "uaddlp v0.8h, v0.16b \n"
"uadalp v0.8h, v1.16b \n" "uadalp v0.8h, v1.16b \n"
"uadalp v0.8h, v2.16b \n" "uadalp v0.8h, v2.16b \n"
...@@ -157,7 +157,7 @@ void ScaleRowDown34_NEON(const uint8* src_ptr, ...@@ -157,7 +157,7 @@ void ScaleRowDown34_NEON(const uint8* src_ptr,
"1: \n" "1: \n"
MEMACCESS(0) MEMACCESS(0)
"ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0
"subs %2, %2, #24 \n" "subs %w2, %w2, #24 \n"
"orr v2.16b, v3.16b, v3.16b \n" // order v0, v1, v2 "orr v2.16b, v3.16b, v3.16b \n" // order v0, v1, v2
MEMACCESS(1) MEMACCESS(1)
"st3 {v0.8b,v1.8b,v2.8b}, [%1], #24 \n" "st3 {v0.8b,v1.8b,v2.8b}, [%1], #24 \n"
...@@ -181,7 +181,7 @@ void ScaleRowDown34_0_Box_NEON(const uint8* src_ptr, ...@@ -181,7 +181,7 @@ void ScaleRowDown34_0_Box_NEON(const uint8* src_ptr,
"ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0
MEMACCESS(3) MEMACCESS(3)
"ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%3], #32 \n" // src line 1 "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%3], #32 \n" // src line 1
"subs %2, %2, #24 \n" "subs %w2, %w2, #24 \n"
// filter src line 0 with src line 1 // filter src line 0 with src line 1
// expand chars to shorts to allow for room // expand chars to shorts to allow for room
...@@ -241,7 +241,7 @@ void ScaleRowDown34_1_Box_NEON(const uint8* src_ptr, ...@@ -241,7 +241,7 @@ void ScaleRowDown34_1_Box_NEON(const uint8* src_ptr,
"ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0 "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" // src line 0
MEMACCESS(3) MEMACCESS(3)
"ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%3], #32 \n" // src line 1 "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%3], #32 \n" // src line 1
"subs %2, %2, #24 \n" "subs %w2, %w2, #24 \n"
// average src line 0 with src line 1 // average src line 0 with src line 1
"urhadd v0.8b, v0.8b, v4.8b \n" "urhadd v0.8b, v0.8b, v4.8b \n"
"urhadd v1.8b, v1.8b, v5.8b \n" "urhadd v1.8b, v1.8b, v5.8b \n"
...@@ -294,7 +294,7 @@ void ScaleRowDown38_NEON(const uint8* src_ptr, ...@@ -294,7 +294,7 @@ void ScaleRowDown38_NEON(const uint8* src_ptr,
"1: \n" "1: \n"
MEMACCESS(0) MEMACCESS(0)
"ld1 {v0.16b,v1.16b}, [%0], #32 \n" "ld1 {v0.16b,v1.16b}, [%0], #32 \n"
"subs %2, %2, #12 \n" "subs %w2, %w2, #12 \n"
"tbl v2.16b, {v0.16b,v1.16b}, v3.16b \n" "tbl v2.16b, {v0.16b,v1.16b}, v3.16b \n"
MEMACCESS(1) MEMACCESS(1)
"st1 {v2.8b}, [%1], #8 \n" "st1 {v2.8b}, [%1], #8 \n"
...@@ -336,7 +336,7 @@ void OMITFP ScaleRowDown38_3_Box_NEON(const uint8* src_ptr, ...@@ -336,7 +336,7 @@ void OMITFP ScaleRowDown38_3_Box_NEON(const uint8* src_ptr,
"ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%2], #32 \n" "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%2], #32 \n"
MEMACCESS(4) MEMACCESS(4)
"ld4 {v16.8b,v17.8b,v18.8b,v19.8b}, [%3], #32 \n" "ld4 {v16.8b,v17.8b,v18.8b,v19.8b}, [%3], #32 \n"
"subs %4, %4, #12 \n" "subs %w4, %w4, #12 \n"
// Shuffle the input data around to get align the data // Shuffle the input data around to get align the data
// so adjacent data can be added. 0,1 - 2,3 - 4,5 - 6,7 // so adjacent data can be added. 0,1 - 2,3 - 4,5 - 6,7
...@@ -460,7 +460,7 @@ void ScaleRowDown38_2_Box_NEON(const uint8* src_ptr, ...@@ -460,7 +460,7 @@ void ScaleRowDown38_2_Box_NEON(const uint8* src_ptr,
"ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n" "ld4 {v0.8b,v1.8b,v2.8b,v3.8b}, [%0], #32 \n"
MEMACCESS(3) MEMACCESS(3)
"ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%2], #32 \n" "ld4 {v4.8b,v5.8b,v6.8b,v7.8b}, [%2], #32 \n"
"subs %3, %3, #12 \n" "subs %w3, %w3, #12 \n"
// Shuffle the input data around to get align the data // Shuffle the input data around to get align the data
// so adjacent data can be added. 0,1 - 2,3 - 4,5 - 6,7 // so adjacent data can be added. 0,1 - 2,3 - 4,5 - 6,7
...@@ -565,7 +565,7 @@ void ScaleAddRows_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -565,7 +565,7 @@ void ScaleAddRows_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
MEMACCESS(2) MEMACCESS(2)
"st1 {v2.8h, v3.8h}, [%2], #32 \n" // store pixels "st1 {v2.8h, v3.8h}, [%2], #32 \n" // store pixels
"add %1, %1, #16 \n" "add %1, %1, #16 \n"
"subs %4, %4, #16 \n" // 16 processed per loop "subs %w4, %w4, #16 \n" // 16 processed per loop
"b.gt 1b \n" "b.gt 1b \n"
: "+r"(src_tmp), // %0 : "+r"(src_tmp), // %0
"+r"(src_ptr), // %1 "+r"(src_ptr), // %1
...@@ -635,7 +635,7 @@ void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr, ...@@ -635,7 +635,7 @@ void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr,
"st1 {v4.8b}, [%0], #8 \n" // store pixels "st1 {v4.8b}, [%0], #8 \n" // store pixels
"add v1.4s, v1.4s, v0.4s \n" "add v1.4s, v1.4s, v0.4s \n"
"add v2.4s, v2.4s, v0.4s \n" "add v2.4s, v2.4s, v0.4s \n"
"subs %2, %2, #8 \n" // 8 processed per loop "subs %w2, %w2, #8 \n" // 8 processed per loop
"b.gt 1b \n" "b.gt 1b \n"
: "+r"(dst_ptr), // %0 : "+r"(dst_ptr), // %0
"+r"(src_ptr), // %1 "+r"(src_ptr), // %1
...@@ -676,7 +676,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr, ...@@ -676,7 +676,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
"ld1 {v0.16b}, [%1], #16 \n" "ld1 {v0.16b}, [%1], #16 \n"
MEMACCESS(2) MEMACCESS(2)
"ld1 {v1.16b}, [%2], #16 \n" "ld1 {v1.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n" "subs %w3, %w3, #16 \n"
"umull v6.8h, v0.8b, v4.8b \n" "umull v6.8h, v0.8b, v4.8b \n"
"umull2 v7.8h, v0.16b, v4.16b \n" "umull2 v7.8h, v0.16b, v4.16b \n"
"umlal v6.8h, v1.8b, v5.8b \n" "umlal v6.8h, v1.8b, v5.8b \n"
...@@ -694,7 +694,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr, ...@@ -694,7 +694,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
"ld1 {v0.16b}, [%1], #16 \n" "ld1 {v0.16b}, [%1], #16 \n"
MEMACCESS(2) MEMACCESS(2)
"ld1 {v1.16b}, [%2], #16 \n" "ld1 {v1.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n" "subs %w3, %w3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n" "urhadd v0.16b, v0.16b, v1.16b \n"
"urhadd v0.16b, v0.16b, v1.16b \n" "urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0) MEMACCESS(0)
...@@ -708,7 +708,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr, ...@@ -708,7 +708,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
"ld1 {v0.16b}, [%1], #16 \n" "ld1 {v0.16b}, [%1], #16 \n"
MEMACCESS(2) MEMACCESS(2)
"ld1 {v1.16b}, [%2], #16 \n" "ld1 {v1.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n" "subs %w3, %w3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n" "urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0) MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n" "st1 {v0.16b}, [%0], #16 \n"
...@@ -721,7 +721,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr, ...@@ -721,7 +721,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
"ld1 {v1.16b}, [%1], #16 \n" "ld1 {v1.16b}, [%1], #16 \n"
MEMACCESS(2) MEMACCESS(2)
"ld1 {v0.16b}, [%2], #16 \n" "ld1 {v0.16b}, [%2], #16 \n"
"subs %3, %3, #16 \n" "subs %w3, %w3, #16 \n"
"urhadd v0.16b, v0.16b, v1.16b \n" "urhadd v0.16b, v0.16b, v1.16b \n"
"urhadd v0.16b, v0.16b, v1.16b \n" "urhadd v0.16b, v0.16b, v1.16b \n"
MEMACCESS(0) MEMACCESS(0)
...@@ -733,7 +733,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr, ...@@ -733,7 +733,7 @@ void ScaleFilterRows_NEON(uint8* dst_ptr,
"100: \n" "100: \n"
MEMACCESS(1) MEMACCESS(1)
"ld1 {v0.16b}, [%1], #16 \n" "ld1 {v0.16b}, [%1], #16 \n"
"subs %3, %3, #16 \n" "subs %w3, %w3, #16 \n"
MEMACCESS(0) MEMACCESS(0)
"st1 {v0.16b}, [%0], #16 \n" "st1 {v0.16b}, [%0], #16 \n"
"b.gt 100b \n" "b.gt 100b \n"
...@@ -761,7 +761,7 @@ void ScaleARGBRowDown2_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -761,7 +761,7 @@ void ScaleARGBRowDown2_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"ld2 {v0.4s, v1.4s}, [%0], #32 \n" "ld2 {v0.4s, v1.4s}, [%0], #32 \n"
MEMACCESS (0) MEMACCESS (0)
"ld2 {v2.4s, v3.4s}, [%0], #32 \n" "ld2 {v2.4s, v3.4s}, [%0], #32 \n"
"subs %2, %2, #8 \n" // 8 processed per loop "subs %w2, %w2, #8 \n" // 8 processed per loop
MEMACCESS (1) MEMACCESS (1)
"st1 {v1.16b}, [%1], #16 \n" // store odd pixels "st1 {v1.16b}, [%1], #16 \n" // store odd pixels
MEMACCESS (1) MEMACCESS (1)
...@@ -782,7 +782,7 @@ void ScaleARGBRowDown2Linear_NEON(const uint8* src_argb, ptrdiff_t src_stride, ...@@ -782,7 +782,7 @@ void ScaleARGBRowDown2Linear_NEON(const uint8* src_argb, ptrdiff_t src_stride,
MEMACCESS (0) MEMACCESS (0)
// load 8 ARGB pixels. // load 8 ARGB pixels.
"ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n"
"subs %2, %2, #8 \n" // 8 processed per loop. "subs %w2, %w2, #8 \n" // 8 processed per loop.
"uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts.
"uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts.
"uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts. "uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts.
...@@ -810,7 +810,7 @@ void ScaleARGBRowDown2Box_NEON(const uint8* src_ptr, ptrdiff_t src_stride, ...@@ -810,7 +810,7 @@ void ScaleARGBRowDown2Box_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
"1: \n" "1: \n"
MEMACCESS (0) MEMACCESS (0)
"ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 8 ARGB pixels. "ld4 {v0.16b,v1.16b,v2.16b,v3.16b}, [%0], #64 \n" // load 8 ARGB pixels.
"subs %3, %3, #8 \n" // 8 processed per loop. "subs %w3, %w3, #8 \n" // 8 processed per loop.
"uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts. "uaddlp v0.8h, v0.16b \n" // B 16 bytes -> 8 shorts.
"uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts. "uaddlp v1.8h, v1.16b \n" // G 16 bytes -> 8 shorts.
"uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts. "uaddlp v2.8h, v2.16b \n" // R 16 bytes -> 8 shorts.
...@@ -851,7 +851,7 @@ void ScaleARGBRowDownEven_NEON(const uint8* src_argb, ptrdiff_t src_stride, ...@@ -851,7 +851,7 @@ void ScaleARGBRowDownEven_NEON(const uint8* src_argb, ptrdiff_t src_stride,
"ld1 {v0.s}[2], [%0], %3 \n" "ld1 {v0.s}[2], [%0], %3 \n"
MEMACCESS(0) MEMACCESS(0)
"ld1 {v0.s}[3], [%0], %3 \n" "ld1 {v0.s}[3], [%0], %3 \n"
"subs %2, %2, #4 \n" // 4 pixels per loop. "subs %w2, %w2, #4 \n" // 4 pixels per loop.
MEMACCESS(1) MEMACCESS(1)
"st1 {v0.16b}, [%1], #16 \n" "st1 {v0.16b}, [%1], #16 \n"
"b.gt 1b \n" "b.gt 1b \n"
...@@ -903,7 +903,7 @@ void ScaleARGBRowDownEvenBox_NEON(const uint8* src_argb, ptrdiff_t src_stride, ...@@ -903,7 +903,7 @@ void ScaleARGBRowDownEvenBox_NEON(const uint8* src_argb, ptrdiff_t src_stride,
"add v4.8h, v4.8h, v6.8h \n" // (e+f)_(g+h) "add v4.8h, v4.8h, v6.8h \n" // (e+f)_(g+h)
"rshrn v0.8b, v0.8h, #2 \n" // first 2 pixels. "rshrn v0.8b, v0.8h, #2 \n" // first 2 pixels.
"rshrn2 v0.16b, v4.8h, #2 \n" // next 2 pixels. "rshrn2 v0.16b, v4.8h, #2 \n" // next 2 pixels.
"subs %3, %3, #4 \n" // 4 pixels per loop. "subs %w3, %w3, #4 \n" // 4 pixels per loop.
MEMACCESS(2) MEMACCESS(2)
"st1 {v0.16b}, [%2], #16 \n" "st1 {v0.16b}, [%2], #16 \n"
"b.gt 1b \n" "b.gt 1b \n"
...@@ -945,7 +945,7 @@ void ScaleARGBCols_NEON(uint8* dst_argb, const uint8* src_argb, ...@@ -945,7 +945,7 @@ void ScaleARGBCols_NEON(uint8* dst_argb, const uint8* src_argb,
MEMACCESS(0) MEMACCESS(0)
"st1 {v0.4s, v1.4s}, [%0], #32 \n" // store pixels "st1 {v0.4s, v1.4s}, [%0], #32 \n" // store pixels
"subs %2, %2, #8 \n" // 8 processed per loop "subs %w2, %w2, #8 \n" // 8 processed per loop
"b.gt 1b \n" "b.gt 1b \n"
: "+r"(dst_argb), // %0 : "+r"(dst_argb), // %0
"+r"(src_argb), // %1 "+r"(src_argb), // %1
...@@ -1017,7 +1017,7 @@ void ScaleARGBFilterCols_NEON(uint8* dst_argb, const uint8* src_argb, ...@@ -1017,7 +1017,7 @@ void ScaleARGBFilterCols_NEON(uint8* dst_argb, const uint8* src_argb,
MEMACCESS(0) MEMACCESS(0)
"st1 {v0.4s}, [%0], #16 \n" // store pixels "st1 {v0.4s}, [%0], #16 \n" // store pixels
"add v5.4s, v5.4s, v6.4s \n" "add v5.4s, v5.4s, v6.4s \n"
"subs %2, %2, #4 \n" // 4 processed per loop "subs %w2, %w2, #4 \n" // 4 processed per loop
"b.gt 1b \n" "b.gt 1b \n"
: "+r"(dst_argb), // %0 : "+r"(dst_argb), // %0
"+r"(src_argb), // %1 "+r"(src_argb), // %1
......
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