Shaun Ren 2c9cf7c78b vkd3d-shader/hlsl: Implement normalization of binary expressions. ...

We normalize binary expressions by attempting to group constants
together, in order to facilitate further simplification of the
expressions.

For any binary operator OP, non-constants x, y, and constants a, b, we
apply the following rewrite rules:

  a OP x -> x OP a, if OP is commutative.

  (x OP a) OP b -> x OP (a OP b), if OP is associative.

  (x OP a) OP y -> (x OP y) OP a, if OP is associative and commutative.

  x OP (y OP a) -> (x OP y) OP a, if OP is associative.

Note that we consider floating point operations to be
non-associative.

2024-12-11 15:32:22 +01:00

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