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Clarify documentation and remove guarantees that are not fulfilled.
llvm-svn: 132344
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@ -174,22 +174,15 @@ height="369">
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as setting program variables, or calling functions that have been
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deleted.</li>
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<li>LLVM optimizations gracefully interact with debugging information. If
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they are not aware of debug information, they are automatically disabled
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as necessary in the cases that would invalidate the debug info. This
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retains the LLVM features, making it easy to write new
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transformations.</li>
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<li>As desired, LLVM optimizations can be upgraded to be aware of the LLVM
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debugging information, allowing them to update the debugging information
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as they perform aggressive optimizations. This means that, with effort,
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the LLVM optimizers could optimize debug code just as well as non-debug
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code.</li>
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<li>LLVM debug information does not prevent many important optimizations from
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<li>LLVM debug information does not prevent optimizations from
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happening (for example inlining, basic block reordering/merging/cleanup,
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tail duplication, etc), further reducing the amount of the compiler that
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eventually is "aware" of debugging information.</li>
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tail duplication, etc).<li>
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<li>LLVM debug information is automatically optimized along with the rest of
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the program, using existing facilities. For example, duplicate
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