Simplification for associative and commutative operations on constants
The purpose of this change is to enable the instruction simplifier
to recognize patterns such as
OP y, x, const1
OP z, y, const2
where OP is both an associative and a commutative operation on integral
types, and replace them with
OP z, x, const3
Since subtraction on integral types is equivalent to addition with a
negated operand, it receives a similar treatment, even though it is
not commutative.
Change-Id: I278cac39bd39bc843d250a976931cb000876ea88
3 files changed
