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Transform: add SymbolRewriter pass

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This introduces the symbol rewriter. This is an IR->IR transformation that is
implemented as a CodeGenPrepare pass. This allows for the transparent
adjustment of the symbols during compilation.

It provides a clean, simple, elegant solution for symbol inter-positioning. This
technique is often used, such as in the various sanitizers and performance
analysis.

The control of this is via a custom YAML syntax map file that indicates source
to destination mapping, so as to avoid having the compiler to know the exact
details of the source to destination transformations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221548 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2014-11-07 21:32:08 +00:00
parent 049368273b
commit 35c163020a
10 changed files with 822 additions and 2 deletions
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include/llvm/InitializePasses.h
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@@ -284,6 +284,7 @@ void initializeMachineFunctionPrinterPassPass(PassRegistry&);
void initializeStackMapLivenessPass(PassRegistry&);
void initializeMachineCombinerPass(PassRegistry &);
void initializeLoadCombinePass(PassRegistry&);
void initializeRewriteSymbolsPass(PassRegistry&);
}
#endif