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[dev.ssa] cmd/compile/internal/gc: support CALLFUNC as statement

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I don't have strong understanding of the AST structure, so I'm
not sure if this is the right way to handle function call statements.

Change-Id: Ib526f667ab483b32d9fd17da800b5d6f4b26c4c9
Reviewed-on: https://go-review.googlesource.com/11139
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Michael Matloob 2015-06-16 17:58:03 -07:00 committed by Michael Matloob
parent 73054f5729
commit 2aabacdb5a
1 changed files with 7 additions and 0 deletions
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7
src/cmd/compile/internal/gc/ssa.go
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@ -335,6 +335,9 @@ func (s *state) stmt(n *Node) {
s.startBlock(bEnd) s.startBlock(bEnd)
case OCALLFUNC:
s.expr(n)
case OVARKILL: case OVARKILL:
// TODO(khr): ??? anything to do here? Only for addrtaken variables? // TODO(khr): ??? anything to do here? Only for addrtaken variables?
// Maybe just link it in the store chain? // Maybe just link it in the store chain?
@ -464,6 +467,10 @@ func (s *state) expr(n *Node) *ssa.Value {
s.startBlock(bNext) s.startBlock(bNext)
var titer Iter var titer Iter
fp := Structfirst(&titer, Getoutarg(n.Left.Type)) fp := Structfirst(&titer, Getoutarg(n.Left.Type))
if fp == nil {
// CALLFUNC has no return value. Continue with the next statement.
return nil
}
a := s.entryNewValue1I(ssa.OpOffPtr, Ptrto(fp.Type), fp.Width, s.sp) a := s.entryNewValue1I(ssa.OpOffPtr, Ptrto(fp.Type), fp.Width, s.sp)
return s.newValue2(ssa.OpLoad, fp.Type, a, call) return s.newValue2(ssa.OpLoad, fp.Type, a, call)
default: default: