On Wednesday, 18 May 2016 at 08:21:18 UTC, Walter Bright wrote:
The constant folding part was where, then?
Probably on the EE, executed with different precision (32-bit) and passed over to the VU via one of its registers. Manu spent more time with that code than I did and can probably give exact details. But pasting the code, given it's proprietary code from a 15 year old engine, will be difficult at best considering the code is likely on a backup tape somewhere.
You're also asking for a mode where the compiler for one machine is supposed to behave like hand-coded assembler for another machine with a different instruction set.
Actually, I'm asking for something exactly like the arch option for MSVC/-mfmath option for GCC/etc, and have it respect that for CTFE.
