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| author | Chandler Carruth <chandlerc@gmail.com> | 2012-12-20 22:31:43 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2012-12-20 22:31:43 +0000 |
| commit | 41d2daa9344a4c4e8bb88dba51cd087c0648b695 (patch) | |
| tree | 7e22b30849a5a15a044a3423d0e8df884992ceea /docs/LinkTimeOptimization.rst | |
| parent | 571f3e0cc9e767d1e3dcfd3e7e0b3d11ec4f7884 (diff) | |
| parent | 6c583141bf6b7a6b5f8125c1037ecbc089813288 (diff) | |
Updating branches/google/testing to 170392
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/google/testing@170779 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs/LinkTimeOptimization.rst')
| -rw-r--r-- | docs/LinkTimeOptimization.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/docs/LinkTimeOptimization.rst b/docs/LinkTimeOptimization.rst index 7eacf0bd0d..822196ccf4 100644 --- a/docs/LinkTimeOptimization.rst +++ b/docs/LinkTimeOptimization.rst @@ -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 |