[llvm-commits] [llvm] r143600 - in /llvm/trunk: lib/CodeGen/MachineInstr.cpp test/CodeGen/X86/MachineLICM-HoistSelectorRefs.ll

[Chris Lattner]

On Nov 3, 2011, at 11:51 AM, Evan Cheng wrote:
>> I did mention metadata to Evan but he'd said that might be too heavyweight a solution.  But there also seems to be reasons against adding a whole new linkage type too, primarily that there's quite a lot of them for developers to deal with already.
> 
> My concern is there is no precedence for using metadata annotation for scalar optimizations.

We use metadata for floating point precision and TBAA, both of which are related.

-Chris