Displaying 1 result from an estimated 1 matches for "f312c917".
2020 Jun 30
2
How to prevent llvm's default optimization
Hi, James,
Thanks for your reply.
I do not think it is always true, that "mul then add" is faster than "add then mul".
For example,
A small immediate can be directly encoded in the instruction, but it becomes a larger one after a multiplication, which has to be loaded from the constant pool (extra memory access).
So I wonder, is it possile to prevent it, via changes