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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14081 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2004-06-09 03:59:05 +00:00
parent 1a8c917ec6
commit aab3aff97b
1 changed files with 4 additions and 3 deletions
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7
docs/GarbageCollection.html
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@ -220,7 +220,7 @@ CodeBlock:
</tt></div> </tt></div>
<p>The <tt>llvm_gc_allocate</tt> function is a global function defined by the <p>The <tt>llvm_gc_allocate</tt> function is a global function defined by the
garbage collector implementation to allocate memory. It should return a garbage collector implementation to allocate memory. It returns a
zeroed-out block of memory of the appropriate size.</p> zeroed-out block of memory of the appropriate size.</p>
</div> </div>
@ -242,8 +242,9 @@ collectors) need to be informed when the mutator (the program that needs garbage
collection) reads or writes object references into the heap. In the case of a collection) reads or writes object references into the heap. In the case of a
generational collector, it needs to keep track of which "old" generation objects generational collector, it needs to keep track of which "old" generation objects
have references stored into them. The amount of code that typically needs to be have references stored into them. The amount of code that typically needs to be
executed is usually quite small, so the overall performance impact of the executed is usually quite small (and not on the critical path of any
inserted code is tolerable.</p> computation), so the overall performance impact of the inserted code is
tolerable.</p>
<p>To support garbage collectors that use read or write barriers, LLVM provides <p>To support garbage collectors that use read or write barriers, LLVM provides
the <tt>llvm.gcread</tt> and <tt>llvm.gcwrite</tt> intrinsics. The first the <tt>llvm.gcread</tt> and <tt>llvm.gcwrite</tt> intrinsics. The first