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Issue 282933003: PNaCl documentation: improve some of the SIMD documentation. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 7 months ago
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1 .. _nacl-and-pnacl: 1 .. _nacl-and-pnacl:
2 2
3 ############## 3 ##############
4 NaCl and PNaCl 4 NaCl and PNaCl
5 ############## 5 ##############
6 6
7 This document describes the differences between **Native Client** and 7 This document describes the differences between **Native Client** and
8 **Portable Native Client**, and provides recommendations for when to use each. 8 **Portable Native Client**, and provides recommendations for when to use each.
9 9
10 .. contents:: 10 .. contents::
(...skipping 91 matching lines...) Expand 10 before | Expand all | Expand 10 after
102 102
103 When to use NaCl 103 When to use NaCl
104 ================ 104 ================
105 105
106 The limitations below apply to the current release of PNaCl. If any of 106 The limitations below apply to the current release of PNaCl. If any of
107 these limitations are critical for your application, you should use 107 these limitations are critical for your application, you should use
108 non-portable NaCl: 108 non-portable NaCl:
109 109
110 * By its nature, PNaCl does not support architecture-specific 110 * By its nature, PNaCl does not support architecture-specific
111 instructions in an application (i.e., inline assembly), but tries to 111 instructions in an application (i.e., inline assembly), but tries to
112 offer high-performance portable equivalents. 112 offer high-performance portable equivalents. One such example is
113 PNaCl's :ref:`Portable SIMD Vectors <portable_simd_vectors>`.
113 * Currently PNaCl only supports static linking with the ``newlib`` 114 * Currently PNaCl only supports static linking with the ``newlib``
114 C standard library (the Native Client SDK provides a PNaCl port of 115 C standard library (the Native Client SDK provides a PNaCl port of
115 ``newlib``). Dynamic linking and ``glibc`` are not yet supported. 116 ``newlib``). Dynamic linking and ``glibc`` are not yet supported.
116 Work is under way to enable dynamic linking in future versions of PNaCl. 117 Work is under way to enable dynamic linking in future versions of PNaCl.
117 * In the initial release, PNaCl does not support some GNU extensions 118 * In the initial release, PNaCl does not support some GNU extensions
118 like taking the address of a label for computed ``goto``, or nested 119 like taking the address of a label for computed ``goto``, or nested
119 functions. 120 functions.
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