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1012433
2010 Oct 25
4
[LLVMdev] Prevent instruction elimination
Hello,
Does there exist something like a "dummy" instruction that is not removed by
the optimizers, even if it seems to be dead code?
I want to use such instructions to carry metadata information, but they
should have a minimal impact on the code generation and optimization. I used
an add instruction:
%0 = add i8 1, 2, !pragma_instrument_mem_add !0 ; <i8> [#uses=0]
which