[dev.ssa] cmd/compile/internal/ssa: New register allocator

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Implement a global (whole function) register allocator.
This replaces the local (per basic block) register allocator.

Clobbering of registers by instructions is handled properly.
A separate change will add the correct clobbers to all the instructions.

Change-Id: I38ce4dc7dccb8303c1c0e0295fe70247b0a3f2ea
Reviewed-on: https://go-review.googlesource.com/13622
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Todd Neal <todd@tneal.org>

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This commit is contained in:

Keith Randall 2015-08-11 12:51:33 -07:00

parent 759b9c3b80

commit 0b46b42943

12 changed files with 1447 additions and 750 deletions

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src/cmd/compile/internal/ssa/regalloc.go

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