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go/test/interface
Russ Cox 4224d81fae cmd/internal/gc: inline x := y.(*T) and x, ok := y.(*T)
These can be implemented with just a compare and a move instruction.
Do so, avoiding the overhead of a call into the runtime.

These assertions are a significant cost in Go code that uses interface{}
as a safe alternative to C's void* (or unsafe.Pointer), such as the
current version of the Go compiler.

*T here includes pointer to T but also any Go type represented as
a single pointer (chan, func, map). It does not include [1]*T or struct{*int}.
That requires more work in other parts of the compiler; there is a TODO.

Change-Id: I7ff681c20d2c3eb6ad11dd7b3a37b1f3dda23965
Reviewed-on: https://go-review.googlesource.com/7862
Reviewed-by: Rob Pike <r@golang.org>
2015-03-20 20:05:37 +00:00
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embed1.dir
private.dir
recursive1.dir
assertinline.go
bigdata.go
convert1.go
convert2.go
convert.go
embed1.go
embed2.go
embed.go
explicit.go
fail.go
fake.go
noeq.go
pointer.go
private.go
receiver1.go
receiver.go
recursive1.go
recursive.go
returntype.go
struct.go