x86/sbrdsp: remove unnecessary sign extend instruction in apply_noise_main

noise needs to be zero extended and it can be done implicitly as a side effect in a subsequent instruction. Signed-off-by: James Almer <jamrial@gmail.com>
8 years ago · 24bb7db403
parent 3d3243577c
commit 24bb7db403
1 changed files with 1 additions and 2 deletions
--- a/libavcodec/x86/sbrdsp.asm
+++ b/libavcodec/x86/sbrdsp.asm
@ -382,8 +382,7 @@ apply_noise_main:
 %else
    DEFINE_ARGS Y, s_m, q_filt, noise, kx, count
 %endif
-    movsxdifnidn    noiseq, noised
-    dec    noiseq
+    dec    noised
    shl    countd, 2
 %ifdef PIC
    lea NOISE_TABLE, [sbr_noise_table]