x86: proresdsp: improve SIGNEXTEND macro comments

03737412 · Diego Biurrun · 81905088 · 03737412
Commit 03737412 authored Jul 15, 2012 by Diego Biurrun
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proresdsp.asm libavcodec/x86/proresdsp.asm +3 -3

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--- a/libavcodec/x86/proresdsp.asm
+++ b/libavcodec/x86/proresdsp.asm
@@ -405,12 +405,12 @@ cglobal prores_idct_put_10, 4, 4, %1
    RET
 %endmacro

-%macro SIGNEXTEND 2-3 ; dstlow, dsthigh, tmp
-%if cpuflag(sse4)
+%macro SIGNEXTEND 2-3
+%if cpuflag(sse4) ; dstlow, dsthigh
    movhlps     %2,  %1
    pmovsxwd    %1,  %1
    pmovsxwd    %2,  %2
-%else ; sse2
+%elif cpuflag(sse2) ; dstlow, dsthigh, tmp
    pxor        %3,  %3
    pcmpgtw     %3,  %1
    mova        %2,  %1