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theoretically save one cycle

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Originally committed as revision 7762 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Måns Rullgård 18 years ago
parent ac50bcc834
commit 34b1b8fda8
1 changed files with 2 additions and 2 deletions
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  1. 4
      libavcodec/armv4l/simple_idct_armv6.S

4
libavcodec/armv4l/simple_idct_armv6.S
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@ -72,13 +72,13 @@ w57: .long W57
ldr lr, [a1, #12] /* lr = row[7,5] */ ldr lr, [a1, #12] /* lr = row[7,5] */
pkhtb a3, ip, v7, asr #16 /* a4 = W7 | (W3 << 16) */ pkhtb a3, ip, v7, asr #16 /* a4 = W7 | (W3 << 16) */
pkhbt a2, ip, v7, lsl #16 /* a2 = W1 | (W5 << 16) */ pkhbt a2, ip, v7, lsl #16 /* a2 = W1 | (W5 << 16) */
smusdx v6, a3, a4 /* v6 = -B1 = W7*row[3] - W3*row[1] */
smlad v5, lr, v7, v5 /* B0 += W5*row[5] + W7*row[7] */ smlad v5, lr, v7, v5 /* B0 += W5*row[5] + W7*row[7] */
smusdx v7, a4, a2 /* v7 = B2 = W5*row[1] - W1*row[3] */ smusdx v7, a4, a2 /* v7 = B2 = W5*row[1] - W1*row[3] */
smusdx v6, a3, a4 /* v6 = -B1 = W7*row[3] - W3*row[1] */
ldr a4, [pc, #(w42n-.-8)] /* a4 = -W4 | (-W2 << 16) */
smlad v7, lr, a3, v7 /* B2 += W7*row[5] + W3*row[7] */ smlad v7, lr, a3, v7 /* B2 += W7*row[5] + W3*row[7] */
ldr a3, [a1, #4] /* a3 = row[6,4] */ ldr a3, [a1, #4] /* a3 = row[6,4] */
ldr a4, [pc, #(w42n-.-8)] /* a4 = -W4 | (-W2 << 16) */
smlsdx fp, lr, ip, fp /* B3 += W3*row[5] - W1*row[7] */ smlsdx fp, lr, ip, fp /* B3 += W3*row[5] - W1*row[7] */
ldr ip, [pc, #(w46-.-8)] /* ip = W4 | (W6 << 16) */ ldr ip, [pc, #(w46-.-8)] /* ip = W4 | (W6 << 16) */
smlad v6, lr, a2, v6 /* B1 -= W1*row[5] + W5*row[7] */ smlad v6, lr, a2, v6 /* B1 -= W1*row[5] + W5*row[7] */

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