x86: sbrdsp/fft: reuse ps_neg constant

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/x86/constants.c

@@ -56,3 +56,5 @@ DECLARE_ALIGNED(32, const ymm_reg,  ff_pb_3)    = { 0x0303030303030303ULL, 0x030
                                                     0x0303030303030303ULL, 0x0303030303030303ULL };
 DECLARE_ALIGNED(16, const xmm_reg,  ff_pb_80)   = { 0x8080808080808080ULL, 0x8080808080808080ULL };
 DECLARE_ALIGNED(8,  const uint64_t, ff_pb_FC)   =   0xFCFCFCFCFCFCFCFCULL;
+
+DECLARE_ALIGNED(16, const xmm_reg,  ff_ps_neg)  = { 0x8000000080000000ULL, 0x8000000080000000ULL };

libavcodec/x86/constants.h

@@ -55,4 +55,6 @@ extern const xmm_reg  ff_pb_80;
 extern const xmm_reg  ff_pb_F8;
 extern const uint64_t ff_pb_FC;
 
+extern const xmm_reg  ff_ps_neg;
+
 #endif /* AVCODEC_X86_CONSTANTS_H */

libavcodec/x86/fft.asm

@@ -68,9 +68,10 @@ perm1: dd 0x00, 0x02, 0x03, 0x01, 0x03, 0x00, 0x02, 0x01
 perm2: dd 0x00, 0x01, 0x02, 0x03, 0x01, 0x00, 0x02, 0x03
 ps_p1p1m1p1root2: dd 1.0, 1.0, -1.0, 1.0, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2
 ps_m1m1p1m1p1m1m1m1: dd 1<<31, 1<<31, 0, 1<<31, 0, 1<<31, 1<<31, 1<<31
-ps_m1m1m1m1: times 4 dd 1<<31
 ps_m1p1: dd 1<<31, 0
 
+cextern ps_neg
+
 %assign i 16
 %rep 13
 cextern cos_ %+ i
@@ -685,7 +686,7 @@ cglobal imdct_calc, 3,5,3
     mov     r2, r3
     sub     r3, mmsize
     neg     r2
-    mova    m2, [ps_m1m1m1m1]
+    mova    m2, [ps_neg]
 .loop:
 %if mmsize == 8
     PSWAPD  m0, [r1 + r3]
@@ -998,7 +999,7 @@ cglobal imdct_half, 3,12,8; FFTContext *s, FFTSample *output, const FFTSample *i
     sub   r4, r3
 %endif
 %if notcpuflag(3dnowext) && mmsize == 8
-    movd  m7, [ps_m1m1m1m1]
+    movd  m7, [ps_neg]
 %endif
 .pre:
 %if ARCH_X86_64 == 0

libavcodec/x86/sbrdsp.asm

@@ -25,13 +25,13 @@ SECTION_RODATA
 ; mask equivalent for multiply by -1.0 1.0
 ps_mask         times 2 dd 1<<31, 0
 ps_mask2        times 2 dd 0, 1<<31
-ps_neg          times 4 dd 1<<31
 ps_noise0       times 2 dd  1.0,  0.0,
 ps_noise2       times 2 dd -1.0,  0.0
 ps_noise13      dd  0.0,  1.0, 0.0, -1.0
                 dd  0.0, -1.0, 0.0,  1.0
                 dd  0.0,  1.0, 0.0, -1.0
 cextern         sbr_noise_table
+cextern         ps_neg
 
 SECTION_TEXT