[cfe-commits] r68720 - /cfe/trunk/docs/PTHInternals.html
Ted Kremenek
kremenek at apple.com
Thu Apr 9 11:22:41 PDT 2009
Author: kremenek
Date: Thu Apr 9 13:22:40 2009
New Revision: 68720
URL: http://llvm.org/viewvc/llvm-project?rev=68720&view=rev
Log:
Fix grammar. Bold face feature points.
Modified:
cfe/trunk/docs/PTHInternals.html
Modified: cfe/trunk/docs/PTHInternals.html
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/PTHInternals.html?rev=68720&r1=68719&r2=68720&view=diff
==============================================================================
--- cfe/trunk/docs/PTHInternals.html (original)
+++ cfe/trunk/docs/PTHInternals.html Thu Apr 9 13:22:40 2009
@@ -33,9 +33,8 @@
<p>Clang supports an implementation of precompiled headers known as
<em>pre-tokenized headers</em> (PTH). Clang's pre-tokenized headers support most
of same interfaces as GCC's pre-compiled headers (as well as others) but are
-completely different in their implementation. This first describes the
-interface for using PTH and then briefly elaborates on their design and
-implementation.</p>
+completely different in their implementation. This first describes the interface
+for using PTH and then briefly elaborates on its design and implementation.</p>
<h2>Using Pretokenized Headers with <tt>clang</tt></h2>
@@ -142,13 +141,13 @@
<ul>
-<li><p><em>Language independence</em>: PTH files work with any language that
+<li><p><b>Language independence</b>: PTH files work with any language that
Clang's lexer can handle, including C, Objective-C, and (in the early stages)
C++. This means development on language features at the parsing level or above
(which is basically almost all interesting pieces) does not require PTH to be
modified.</p></li>
-<li><em>Simple design</em>: Relatively speaking, PTH has a simple design and
+<li><b>Simple design</b>: Relatively speaking, PTH has a simple design and
implementation, making it easy to test. Further, because the machinery for PTH
resides at the lower-levels of the Clang library stack it is fairly
straightforward to profile and optimize.</li>
@@ -160,7 +159,7 @@
<ul>
-<li><p><em>Architecture independence</em>: In contrast to GCC's PCH files (and
+<li><p><b>Architecture independence</b>: In contrast to GCC's PCH files (and
those of several other compilers), Clang's PTH files are architecture
independent, requiring only a single PTH file when building an program for
multiple architectures.</p>
@@ -174,7 +173,7 @@
multiple architectures. This can also reduce compile times because only a single
PTH file needs to be generated during a build instead of several.</p></li>
-<li><p><em>Reduced memory pressure</em>: Similar to GCC,
+<li><p><b>Reduced memory pressure</b>: Similar to GCC,
Clang reads PTH files via the use of memory mapping (i.e., <tt>mmap</tt>).
Clang, however, memory maps PTH files as read-only, meaning that multiple
invocations of <tt>clang-cc</tt> can share the same pages in memory from a
@@ -183,7 +182,7 @@
read-only nature of PTH can greatly reduce memory pressure for builds involving
multiple cores, thus improving overall scalability.</p></li>
-<li><p><em>Fast generation</em>: PTH files can be generated in a small fraction
+<li><p><b>Fast generation</b>: PTH files can be generated in a small fraction
of the time needed to generate GCC's PCH files. Since PTH/PCH generation is a
serial operation that typically blocks progress during a build, faster
generation time leads to improved processor utilization with parallel builds on
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