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[dev.ssa] cmd/compile/internal/gc: Implement ODOT and ODOTPTR in addr.

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Change-Id: If8a9d5901fa2141d16b1c8d001761ea62bc23207
Reviewed-on: https://go-review.googlesource.com/12141
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Keith Randall 2015-07-13 15:55:37 -07:00
parent b06961b4f0
commit c3c84a2544
1 changed files with 8 additions and 0 deletions
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8
src/cmd/compile/internal/gc/ssa.go
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@ -673,6 +673,7 @@ func (s *state) assign(op uint8, left *Node, right *Node) {
}
// addr converts the address of the expression n to SSA, adds it to s and returns the SSA result.
// The value that the returned Value represents is guaranteed to be non-nil.
func (s *state) addr(n *Node) *ssa.Value {
switch n.Op {
case ONAME:
@ -716,6 +717,13 @@ func (s *state) addr(n *Node) *ssa.Value {
s.boundsCheck(i, len)
return s.newValue2(ssa.OpPtrIndex, Ptrto(n.Left.Type.Type), a, i)
}
case ODOT:
p := s.addr(n.Left)
return s.newValue2(ssa.OpAdd, p.Type, p, s.constInt(s.config.Uintptr, n.Xoffset))
case ODOTPTR:
p := s.expr(n.Left)
s.nilCheck(p)
return s.newValue2(ssa.OpAdd, p.Type, p, s.constInt(s.config.Uintptr, n.Xoffset))
default:
s.Unimplementedf("addr: bad op %v", Oconv(int(n.Op), 0))
return nil