[cfe-dev] Post-process the LLVM IR generated by new/new []/delete/delete []

lyh.kernel lyh.kernel at gmail.com
Thu Aug 7 13:24:46 PDT 2014

Hello everyone,

I am new to Clang. I want to post-process/manipulate the LLVM IR generated
by new/new []/delete/delete [].

For example, if I write:

*int *p = new int(3);*

Its generated LLVM IR may be:

*%11 = tail call noalias i8* @_Znwj(i32 4) #9*
*%12 = bitcast i8* %11 to i32**
*store i32 3, i32* %12, align 4, !tbaa !6*

Now I want to manipulate (eg. add specific metadata to) these corresponding
IR during AST -> LLVM IR stage (CodeGenFunction?). Is there anyway I can do

Many thanks
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