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Hi Ryan, Could you check where those moves come from? In particular, is this the product of the instruction selection process? You use -print-machineinstrs to see when it is inserted. Thanks, -Quentin > On Jul 30, 2015, at 2:02 PM, Ryan Taylor <ryta1203 at gmail.com> wrote: > > In LLVM 3.6, > > We have an instruction that uses a register class that is defined of

In LLVM 3.6, We have an instruction that uses a register class that is defined of several different reg classes. In 3.4 this works fine but in 3.6 this is broken. For example, I have a mov instruction. mov can be executed between different register types (ie gpr, index, base, etc..) In 3.4, we would get something like this: mov @a, %b1 // moving this immediate to a base register, which is

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