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Make note of the -simplify-libcalls pass.
llvm-svn: 22049
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@ -211,6 +211,12 @@ which primarily helps iterator-intensive C++ codes.</li>
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<li>The code generator now uses information about takes advantage of commutative
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two-address instructions when performing register allocation.</li>
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<li>A new pass has been added to gccas to simplify well-known library calls. The
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pass will short circuit calls to many of the string, memory, and printf type
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functions or replace the calls with simpler/faster calls, where possible given
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information known statically about the arguments to the call. To use the
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pass, specify <tt>-simplify-libcalls</tt> to the <tt>opt</tt> tool.</li>
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</ol>
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</div>
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