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cmd/compile: implement unsafe.Add and unsafe.Slice

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Updates #19367.
Updates #40481.

Change-Id: Iabd2afdd0d520e5d68fd9e6dedd013335a4b3886
Reviewed-on: https://go-review.googlesource.com/c/go/+/312214
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Matthew Dempsky 2021-04-21 02:11:15 -07:00
parent 0d32d9e8a8
commit fadad851a3
20 changed files with 439 additions and 204 deletions
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8
src/cmd/compile/internal/noder/expr.go
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@ -29,6 +29,14 @@ func (g *irgen) expr(expr syntax.Expr) ir.Node {
}
switch {
case tv.IsBuiltin():
// Qualified builtins, such as unsafe.Add and unsafe.Slice.
if expr, ok := expr.(*syntax.SelectorExpr); ok {
if name, ok := expr.X.(*syntax.Name); ok {
if _, ok := g.info.Uses[name].(*types2.PkgName); ok {
return g.use(expr.Sel)
}
}
}
return g.use(expr.(*syntax.Name))
case tv.IsType():
return ir.TypeNode(g.typ(tv.Type))