Optimize and clean-up the exact equality/non-equality instructions

The is_eq_exact/3 and is_ne_exact/3 instructions are commonly used
with one immediate or literal operand.

Introduce three new specialized instructions:

i_is_eq_exact_literal/3
i_is_ne_exact_immed/3
i_is_ne_exact_literal/3

The i_is_ne_exact_literal/3 instruction is not very frequently
used, but its existence is justified because we removed in a
a previous commit the special instruction for matching bignums
and we now use i_is_ne_exact_literal/3 instead.

For consistency, rename the existing is_eq_immed/3 instruction to
is_eq_exact_immed/3.

While at it, remove the optimization of an is_eq/3 instruction
with an immediate operand because that optimization is already
done by the compiler.

0 files changed, 0 insertions, 0 deletions