diff options
Diffstat (limited to 'lib/rbcodec/codecs/libopus/celt/x86/x86cpu.h')
-rw-r--r-- | lib/rbcodec/codecs/libopus/celt/x86/x86cpu.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/x86/x86cpu.h b/lib/rbcodec/codecs/libopus/celt/x86/x86cpu.h new file mode 100644 index 0000000000..1e2bf17b9b --- /dev/null +++ b/lib/rbcodec/codecs/libopus/celt/x86/x86cpu.h | |||
@@ -0,0 +1,95 @@ | |||
1 | /* Copyright (c) 2014, Cisco Systems, INC | ||
2 | Written by XiangMingZhu WeiZhou MinPeng YanWang | ||
3 | |||
4 | Redistribution and use in source and binary forms, with or without | ||
5 | modification, are permitted provided that the following conditions | ||
6 | are met: | ||
7 | |||
8 | - Redistributions of source code must retain the above copyright | ||
9 | notice, this list of conditions and the following disclaimer. | ||
10 | |||
11 | - Redistributions in binary form must reproduce the above copyright | ||
12 | notice, this list of conditions and the following disclaimer in the | ||
13 | documentation and/or other materials provided with the distribution. | ||
14 | |||
15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | ||
19 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | #if !defined(X86CPU_H) | ||
29 | # define X86CPU_H | ||
30 | |||
31 | # if defined(OPUS_X86_MAY_HAVE_SSE) | ||
32 | # define MAY_HAVE_SSE(name) name ## _sse | ||
33 | # else | ||
34 | # define MAY_HAVE_SSE(name) name ## _c | ||
35 | # endif | ||
36 | |||
37 | # if defined(OPUS_X86_MAY_HAVE_SSE2) | ||
38 | # define MAY_HAVE_SSE2(name) name ## _sse2 | ||
39 | # else | ||
40 | # define MAY_HAVE_SSE2(name) name ## _c | ||
41 | # endif | ||
42 | |||
43 | # if defined(OPUS_X86_MAY_HAVE_SSE4_1) | ||
44 | # define MAY_HAVE_SSE4_1(name) name ## _sse4_1 | ||
45 | # else | ||
46 | # define MAY_HAVE_SSE4_1(name) name ## _c | ||
47 | # endif | ||
48 | |||
49 | # if defined(OPUS_X86_MAY_HAVE_AVX) | ||
50 | # define MAY_HAVE_AVX(name) name ## _avx | ||
51 | # else | ||
52 | # define MAY_HAVE_AVX(name) name ## _c | ||
53 | # endif | ||
54 | |||
55 | # if defined(OPUS_HAVE_RTCD) | ||
56 | int opus_select_arch(void); | ||
57 | # endif | ||
58 | |||
59 | /*gcc appears to emit MOVDQA's to load the argument of an _mm_cvtepi8_epi32() | ||
60 | or _mm_cvtepi16_epi32() when optimizations are disabled, even though the | ||
61 | actual PMOVSXWD instruction takes an m32 or m64. Unlike a normal memory | ||
62 | reference, these require 16-byte alignment and load a full 16 bytes (instead | ||
63 | of 4 or 8), possibly reading out of bounds. | ||
64 | |||
65 | We can insert an explicit MOVD or MOVQ using _mm_cvtsi32_si128() or | ||
66 | _mm_loadl_epi64(), which should have the same semantics as an m32 or m64 | ||
67 | reference in the PMOVSXWD instruction itself, but gcc is not smart enough to | ||
68 | optimize this out when optimizations ARE enabled. | ||
69 | |||
70 | Clang, in contrast, requires us to do this always for _mm_cvtepi8_epi32 | ||
71 | (which is fair, since technically the compiler is always allowed to do the | ||
72 | dereference before invoking the function implementing the intrinsic). | ||
73 | However, it is smart enough to eliminate the extra MOVD instruction. | ||
74 | For _mm_cvtepi16_epi32, it does the right thing, though does *not* optimize out | ||
75 | the extra MOVQ if it's specified explicitly */ | ||
76 | |||
77 | # if defined(__clang__) || !defined(__OPTIMIZE__) | ||
78 | # define OP_CVTEPI8_EPI32_M32(x) \ | ||
79 | (_mm_cvtepi8_epi32(_mm_cvtsi32_si128(*(int *)(x)))) | ||
80 | # else | ||
81 | # define OP_CVTEPI8_EPI32_M32(x) \ | ||
82 | (_mm_cvtepi8_epi32(*(__m128i *)(x))) | ||
83 | #endif | ||
84 | |||
85 | /* similar reasoning about the instruction sequence as in the 32-bit macro above, | ||
86 | */ | ||
87 | # if defined(__clang__) || !defined(__OPTIMIZE__) | ||
88 | # define OP_CVTEPI16_EPI32_M64(x) \ | ||
89 | (_mm_cvtepi16_epi32(_mm_loadl_epi64((__m128i *)(x)))) | ||
90 | # else | ||
91 | # define OP_CVTEPI16_EPI32_M64(x) \ | ||
92 | (_mm_cvtepi16_epi32(*(__m128i *)(x))) | ||
93 | # endif | ||
94 | |||
95 | #endif | ||