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Documentation: cleanup

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169990 91177308-0d34-0410-b5e6-96231b3b80d8
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Dmitri Gribenko 2012-12-12 16:58:13 +00:00
parent b09c146b11
commit 44581afacc
1 changed files with 4 additions and 3 deletions
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7
docs/LinkTimeOptimization.rst
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@ -85,9 +85,10 @@ invokes system linker.
return foo1();
}
.. code-block:: bash
To compile, run:
.. code-block:: console
--- command lines ---
% clang -emit-llvm -c a.c -o a.o # <-- a.o is LLVM bitcode file
% clang -c main.c -o main.o # <-- main.o is native object file
% clang a.o main.o -o main # <-- standard link command without modifications
@ -96,7 +97,7 @@ invokes system linker.
visible symbol defined in LLVM bitcode file. The linker completes its usual
symbol resolution pass and finds that ``foo2()`` is not used
anywhere. This information is used by the LLVM optimizer and it
removes ``foo2()``.</li>
removes ``foo2()``.
* As soon as ``foo2()`` is removed, the optimizer recognizes that condition ``i
< 0`` is always false, which means ``foo3()`` is never used. Hence, the