Feb. 26, 2003
4:59 a.m.
This is true. I used this in my optimization from two years ago, and moved the oparg preparation into the opcode cases, not doing any test, but just fetching the argument.
What happened to the optimization. It is not in the current code?
I also turned this into macros which added to the insn pointer only once. Incredible but true: Most of the win I gathered was by typecasting the oparg access differently into a reference to a short int, instead of oring two bytes.
I skipped over that one because I thought that it would fail on a big-endian computer. Raymond Hettinger