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| author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2014-09-22 16:29:15 +0300 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2020-08-18 17:01:36 -0700 |
| commit | 6dc7aa8da11a450b2cd252fd432c237cd1534acf (patch) | |
| tree | 4f871e0552fda030cb8ade125321e25fbe500a00 | |
| parent | 9181e1ba64d98334b914109d431a6d474f86cb31 (diff) | |
| download | sbc-6dc7aa8da11a450b2cd252fd432c237cd1534acf.tar.gz | |
sbc/sbc_primitives_sse: Optimize sbc_analyze_4s
This makes use 128 bit XMM registers whenever possible.
$ time src/sbcenc_mmx -s 4 sin_4m.au > /dev/null
real 0m1.073s
user 0m1.039s
sys 0m0.030s
=== After ====
$ time src/sbcenc -s 4 sin_4m.au > /dev/null
real 0m1.049s
user 0m1.000s
sys 0m0.047s
| -rw-r--r-- | sbc/sbc_primitives_sse.c | 58 |
1 files changed, 25 insertions, 33 deletions
diff --git a/sbc/sbc_primitives_sse.c b/sbc/sbc_primitives_sse.c index 42cdb03..2a903e1 100644 --- a/sbc/sbc_primitives_sse.c +++ b/sbc/sbc_primitives_sse.c @@ -38,48 +38,40 @@ static inline void sbc_analyze_four_sse(const int16_t *in, int32_t *out, const FIXED_T *consts) { - static const SBC_ALIGNED int32_t round_c[2] = { + static const SBC_ALIGNED int32_t round_c[4] = { + 1 << (SBC_PROTO_FIXED4_SCALE - 1), + 1 << (SBC_PROTO_FIXED4_SCALE - 1), 1 << (SBC_PROTO_FIXED4_SCALE - 1), 1 << (SBC_PROTO_FIXED4_SCALE - 1), }; __asm__ volatile ( - "movq (%0), %%mm0\n" - "movq 8(%0), %%mm1\n" - "pmaddwd (%1), %%mm0\n" - "pmaddwd 8(%1), %%mm1\n" - "paddd (%2), %%mm0\n" - "paddd (%2), %%mm1\n" + "movdqu (%0), %%xmm0\n" + "pmaddwd (%1), %%xmm0\n" + "paddd (%2), %%xmm0\n" "\n" - "movq 16(%0), %%mm2\n" - "movq 24(%0), %%mm3\n" - "pmaddwd 16(%1), %%mm2\n" - "pmaddwd 24(%1), %%mm3\n" - "paddd %%mm2, %%mm0\n" - "paddd %%mm3, %%mm1\n" + "movdqu 16(%0), %%xmm1\n" + "pmaddwd 16(%1), %%xmm1\n" + "paddd %%xmm1, %%xmm0\n" "\n" - "movq 32(%0), %%mm2\n" - "movq 40(%0), %%mm3\n" - "pmaddwd 32(%1), %%mm2\n" - "pmaddwd 40(%1), %%mm3\n" - "paddd %%mm2, %%mm0\n" - "paddd %%mm3, %%mm1\n" + "movdqu 32(%0), %%xmm1\n" + "pmaddwd 32(%1), %%xmm1\n" + "paddd %%xmm1, %%xmm0\n" "\n" - "movq 48(%0), %%mm2\n" - "movq 56(%0), %%mm3\n" - "pmaddwd 48(%1), %%mm2\n" - "pmaddwd 56(%1), %%mm3\n" - "paddd %%mm2, %%mm0\n" - "paddd %%mm3, %%mm1\n" + "movdqu 48(%0), %%xmm1\n" + "pmaddwd 48(%1), %%xmm1\n" + "paddd %%xmm1, %%xmm0\n" "\n" - "movq 64(%0), %%mm2\n" - "movq 72(%0), %%mm3\n" - "pmaddwd 64(%1), %%mm2\n" - "pmaddwd 72(%1), %%mm3\n" - "paddd %%mm2, %%mm0\n" - "paddd %%mm3, %%mm1\n" + "movdqu 64(%0), %%xmm1\n" + "pmaddwd 64(%1), %%xmm1\n" + "paddd %%xmm1, %%xmm0\n" + "\n" + "psrad %4, %%xmm0\n" + "\n" + "movdqa %%xmm0, %%xmm1\n" + "punpckhqdq %%xmm1, %%xmm1\n" + "movdq2q %%xmm0, %%mm0\n" + "movdq2q %%xmm1, %%mm1\n" "\n" - "psrad %4, %%mm0\n" - "psrad %4, %%mm1\n" "packssdw %%mm0, %%mm0\n" "packssdw %%mm1, %%mm1\n" "\n" |