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cmd/compile: get rid of BlockCall

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No need for it, we can treat calls as (mostly) normal values
that take a memory and return a memory.

Lowers the number of basic blocks needed to represent a function.
"go test -c net/http" uses 27% fewer basic blocks.
Probably doesn't affect generated code much, but should help
various passes whose running time and/or space depends on
the number of basic blocks.

Fixes #15631

Change-Id: I0bf21e123f835e2cfa382753955a4f8bce03dfa6
Reviewed-on: https://go-review.googlesource.com/28950
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Keith Randall 2016-09-09 13:11:07 -07:00
parent d00a3cead8
commit c345a3913f
21 changed files with 125 additions and 87 deletions
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2
src/cmd/compile/internal/arm/ssa.go
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@ -994,7 +994,7 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) {
s.SetLineno(b.Line)
switch b.Kind {
case ssa.BlockPlain, ssa.BlockCall, ssa.BlockCheck:
case ssa.BlockPlain, ssa.BlockCheck:
if b.Succs[0].Block() != next {
p := gc.Prog(obj.AJMP)
p.To.Type = obj.TYPE_BRANCH