Hook into the current compiler to convert the existing
IR (after walk) into SSA. Any function ending in "_ssa"
will take this path. The resulting assembly is printed
and then discarded.
Use gc.Type directly in ssa instead of a wrapper for go types.
It makes the IR->SSA rewrite a lot simpler.
Only a few opcodes are implemented in this change. It is
enough to compile simple examples like
func f(p *int) int { return *p }
func g(a []int, i int) int { return a[i] }
Change-Id: I5e18841b752a83ca0519aa1b2d36ef02ce1de6f9
Reviewed-on: https://go-review.googlesource.com/8971
Reviewed-by: Alan Donovan <adonovan@google.com>
Implement a simple common-subexpression elimination.
It uses value numbering & a dominator tree to detect redundant computation.
Change-Id: Id0ff775e439c22f4d41bdd5976176017dd2a2086
Reviewed-on: https://go-review.googlesource.com/8172
Reviewed-by: Alan Donovan <adonovan@google.com>
