On Sat, 24 Feb 2007, Bill Wendling wrote:
> In the X86RegisterInfo.td file, RST is defined like this:
> // Floating point stack registers (these are not allocatable by the
> // register allocator - the floating point stackifier is responsible
> // for transforming FPn allocations to STn registers)
> def RST : RegisterClass<"X86", [f64], 32,
> Is the "begin()" in there correct? Or should it maybe be "end()"?
Yep, it is right. The FP0-x registers are allocatable for the FP stack,
the RST registers are not.