avcodec/x86/dct32: Remove obsolete SSE function

The only systems which benefit from ff_dct32_float_sse are truely
ancient 32bit x86s as all other systems use at least the SSE2 versions
(this includes all x64 cpus (which is why this code is restricted
to x86-32)).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/x86/dct32.asm

@@ -387,7 +387,7 @@ INIT_XMM
 %endif
 
 
-; void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
+; void ff_dct32_float(FFTSample *out, const FFTSample *in)
 %macro DCT32_FUNC 0
 cglobal dct32_float, 2, 3, 16, out, in, tmp
     ; pass 1
@@ -474,18 +474,8 @@ cglobal dct32_float, 2, 3, 16, out, in, tmp
 %endmacro
 
 %macro LOAD_INV 2
-%if cpuflag(sse2)
     pshufd      %1, %2, 0x1b
-%elif cpuflag(sse)
-    movaps      %1, %2
-    shufps      %1, %1, 0x1b
-%endif
 %endmacro
 
-%if ARCH_X86_32
-INIT_XMM sse
-DCT32_FUNC
-%endif
-
 INIT_XMM sse2
 DCT32_FUNC

libavcodec/x86/dct_init.c

@@ -22,7 +22,6 @@
 #include "libavutil/x86/cpu.h"
 #include "libavcodec/dct.h"
 
-void ff_dct32_float_sse(FFTSample *out, const FFTSample *in);
 void ff_dct32_float_sse2(FFTSample *out, const FFTSample *in);
 void ff_dct32_float_avx(FFTSample *out, const FFTSample *in);
 
@@ -30,10 +29,6 @@ av_cold void ff_dct_init_x86(DCTContext *s)
 {
     int cpu_flags = av_get_cpu_flags();
 
-#if ARCH_X86_32
-    if (EXTERNAL_SSE(cpu_flags))
-        s->dct32 = ff_dct32_float_sse;
-#endif
     if (EXTERNAL_SSE2(cpu_flags))
         s->dct32 = ff_dct32_float_sse2;
     if (EXTERNAL_AVX_FAST(cpu_flags))