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x86: proresdsp: improve SIGNEXTEND macro comments

tags/n1.0
Diego Biurrun 13 years ago
parent
81905088a1
commit
03737412a3
1 changed files with 3 additions and 3 deletions
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  1. +3
    -3
      libavcodec/x86/proresdsp.asm

+ 3
- 3
libavcodec/x86/proresdsp.asm View File

@@ -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


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