[llvm-commits] [llvm] r47121 - in /llvm/trunk: include/llvm/CodeGen/ lib/CodeGen/SelectionDAG/ lib/Target/ lib/Target/ARM/ lib/Target/Alpha/ lib/Target/IA64/ lib/Target/PowerPC/ lib/Target/Sparc/ lib/Target/X86/ utils/TableGen/

[Chris Lattner]

On Feb 14, 2008, at 3:30 PM, Evan Cheng wrote:

> This is not a new issue. But I am wondering if this may be a compile
> time issue if the number of legal FP immediate is sufficiently large?
> Should we build a hash table for it instead?

If a target had a huge number of legal fp immediates, it could use  
custom lowering instead of 'expand'.

-Chris