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compiler: make non-escaping Bound_method_expression not heap allocate

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Bound_method_expression needs a closure. Stack allocate the
    closure when it does not escape.
    
    Reviewed-on: https://go-review.googlesource.com/85638

From-SVN: r256407
This commit is contained in:
Ian Lance Taylor 2018-01-09 23:33:49 +00:00
parent eb80a362bc
commit 92bb02927b
2 changed files with 7 additions and 2 deletions
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2
gcc/go/gofrontend/MERGE
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@ -1,4 +1,4 @@
584fdecefce831c3471dbd4857ba0ce0be2b5212
d5774539b17112d9ce709a1fe722daf68eb8594f
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

7
gcc/go/gofrontend/expressions.cc
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@ -7030,7 +7030,12 @@ Bound_method_expression::do_flatten(Gogo* gogo, Named_object*,
Expression* ret = Expression::make_struct_composite_literal(st, vals, loc);
if (!gogo->compiling_runtime() || gogo->package_name() != "runtime")
ret = Expression::make_heap_expression(ret, loc);
{
ret = Expression::make_heap_expression(ret, loc);
Node* n = Node::make_node(this);
if ((n->encoding() & ESCAPE_MASK) == Node::ESCAPE_NONE)
ret->heap_expression()->set_allocate_on_stack();
}
else
{
// When compiling the runtime, method closures do not escape.