3 # Use B to test that optimisations are not inadvertently removed.
8 skip_all_if_miniperl("No B under miniperl");
14 use B qw 'svref_2object OPpASSIGN_COMMON';
17 # aassign with no common vars
20 svref_2object(sub { my($self) = @_ })->ROOT->first->last;
21 if ($last_expr->name ne 'aassign') {
22 die "Expected aassign but found ", $last_expr->name,
23 "; this test needs to be rewritten"
25 is $last_expr->private & OPpASSIGN_COMMON, 0,
26 'no ASSIGN_COMMON for my($self) = @_';
30 # join -> stringify/const
32 for (['CONSTANT', sub { join "foo", $_ }],
33 ['$var' , sub { join $_ , $_ }],
34 ['$myvar' , sub { my $var; join $var, $_ }],
37 my $last_expr = svref_2object($sub)->ROOT->first->last;
38 is $last_expr->name, 'stringify',
39 "join($sep, \$scalar) optimised to stringify";
42 for (['CONSTANT', sub { join "foo", "bar" }, 0, "bar" ],
43 ['CONSTANT', sub { join "foo", "bar", 3 }, 1, "barfoo3"],
44 ['$var' , sub { join $_ , "bar" }, 0, "bar" ],
45 ['$myvar' , sub { my $var; join $var, "bar" }, 0, "bar" ],
47 my($sep,$sub,$is_list,$expect) = @$_;
48 my $last_expr = svref_2object($sub)->ROOT->first->last;
49 my $tn = "join($sep, " . ($is_list?'list of constants':'const') . ")";
50 is $last_expr->name, 'const', "$tn optimised to constant";
51 is $sub->(), $expect, "$tn folded correctly";
57 for(['@pkgary' , '@_' ],
58 ['@lexary' , 'my @a; @a'],
59 ['my(@array)' , 'my(@a)' ],
60 ['local(@array)', 'local(@_)'],
61 ['@{...}' , '@{\@_}' ],
64 my $sub = eval "sub { $code = split }";
65 my $split = svref_2object($sub)->ROOT->first->last;
66 is $split->name, 'split', "$tn = split swallows up the assignment";
70 # stringify with join kid --> join
71 is svref_2object(sub { "@_" })->ROOT->first->last->name, 'join',
72 'qq"@_" optimised from stringify(join(...)) to join(...)';