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1016,43
2011 Jun 28
2
[LLVMdev] Generating different assembly code for the same LLVM instruction depending on the metadata.
Hi LLVM devs,
consider I've got an instrumentation pass that adds some code (say,
function calls) before some memory access instructions and marks those
calls with some special metadata.
I want the compiler to lower the instrumentation code to a sequence of
no-ops while generating the object code.
For example, the assembly for the following code:
1 void _instr(); // the instrumentation