I'm adding support to GCC for a different PPC floating point unit. It's similar to the standard PPC FPU in that it supports most of the same instructions and all operation are in FP registers. The FPU comes in a single-precision and double-precision variant. There's also an option of having no FPU.
Rather than creating yet another configuration with another TARGET_<whatever> definition and creating ever more cluttered condition expression, I've thought to replace TARGET_FPRS with TARGET_FPRS_SINGLE and TARGET_FPRS_DOUBLE. These would both have the value 1 for standard PPC, and 1 or 0 depending on whether the single-or double-precision FPU was available, as specified by a new option -mfpu=. There would be some added instruction patterns for the single-precision operations. Does this sound like a reasonable approach or is there a better way to do this? -- Michael Eager [EMAIL PROTECTED] 1960 Park Blvd., Palo Alto, CA 94306 650-325-8077
