code review 5453043: runtime: prep for type-specific algorithms

runtime: prep for type-specific algorithms

Equality on structs will require arbitrary code for type equality,
so change algorithm in type data from uint8 to table pointer.
In the process, trim top-level map structure from
104/80 bytes (64-bit/32-bit) to 24/12.

Equality on structs will require being able to call code generated
by the Go compiler, and C code has no way to access Go return
values, so change the hash and equal algorithm functions to take
a pointer to a result instead of returning the result.

[rsc, 2011-12-05 14:37:03]

Hello ken2 (cc: golang-dev@googlegroups.com),

I'd like you to review this change to
https://go.googlecode.com/hg/

[rsc, 2011-12-05 14:40:32]

*** Submitted as http://code.google.com/p/go/source/detail?r=90ea2b3effcf ***

runtime: prep for type-specific algorithms

Equality on structs will require arbitrary code for type equality,
so change algorithm in type data from uint8 to table pointer.
In the process, trim top-level map structure from
104/80 bytes (64-bit/32-bit) to 24/12.

Equality on structs will require being able to call code generated
by the Go compiler, and C code has no way to access Go return
values, so change the hash and equal algorithm functions to take
a pointer to a result instead of returning the result.

R=ken
CC=golang-dev
http://codereview.appspot.com/5453043