diff --git a/src/bin/pg_checksums/t/002_actions.pl b/src/bin/pg_checksums/t/002_actions.pl
index 4e4934532a3..b7a64de64c7 100644
--- a/src/bin/pg_checksums/t/002_actions.pl
+++ b/src/bin/pg_checksums/t/002_actions.pl
@@ -185,7 +185,6 @@ check_relation_corruption($node, 'corrupt1', 'pg_default');
 my $basedir        = $node->basedir;
 my $tablespace_dir = "$basedir/ts_corrupt_dir";
 mkdir($tablespace_dir);
-$tablespace_dir = TestLib::perl2host($tablespace_dir);
 $node->safe_psql('postgres',
 	"CREATE TABLESPACE ts_corrupt LOCATION '$tablespace_dir';");
 check_relation_corruption($node, 'corrupt2', 'ts_corrupt');
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index cb8a6423f43..c7ac7d0f58c 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -970,7 +970,7 @@ primary_conninfo='$root_connstr'
 sub enable_restoring
 {
 	my ($self, $root_node) = @_;
-	my $path = TestLib::perl2host($root_node->archive_dir);
+	my $path = $root_node->archive_dir;
 	my $name = $self->name;
 
 	print "### Enabling WAL restore for node \"$name\"\n";
@@ -1015,7 +1015,7 @@ sub set_standby_mode
 sub enable_archiving
 {
 	my ($self) = @_;
-	my $path   = TestLib::perl2host($self->archive_dir);
+	my $path   = $self->archive_dir;
 	my $name   = $self->name;
 
 	print "### Enabling WAL archiving for node \"$name\"\n";
diff --git a/src/test/perl/TestLib.pm b/src/test/perl/TestLib.pm
index 5c21cd56080..94bac189b58 100644
--- a/src/test/perl/TestLib.pm
+++ b/src/test/perl/TestLib.pm
@@ -193,33 +193,6 @@ sub tempdir_short
 	return File::Temp::tempdir(CLEANUP => 1);
 }
 
-# Translate a Perl file name to a host file name.  Currently, this is a no-op
-# except for the case of Perl=msys and host=mingw32.  The subject need not
-# exist, but its parent directory must exist.
-sub perl2host
-{
-	my ($subject) = @_;
-	return $subject unless $Config{osname} eq 'msys';
-	my $here = cwd;
-	my $leaf;
-	if (chdir $subject)
-	{
-		$leaf = '';
-	}
-	else
-	{
-		$leaf = '/' . basename $subject;
-		my $parent = dirname $subject;
-		chdir $parent or die "could not chdir \"$parent\": $!";
-	}
-
-	# this odd way of calling 'pwd -W' is the only way that seems to work.
-	my $dir = qx{sh -c "pwd -W"};
-	chomp $dir;
-	chdir $here;
-	return $dir . $leaf;
-}
-
 =pod
 
 =item has_wal_read_bug()
diff --git a/src/test/recovery/t/014_unlogged_reinit.pl b/src/test/recovery/t/014_unlogged_reinit.pl
index ee05e1a1ee1..b7ebe700c23 100644
--- a/src/test/recovery/t/014_unlogged_reinit.pl
+++ b/src/test/recovery/t/014_unlogged_reinit.pl
@@ -30,9 +30,7 @@ ok(-f "$pgdata/$baseUnloggedPath",        'main fork in base exists');
 
 my $tablespaceDir = TestLib::tempdir;
 
-my $realTSDir = TestLib::perl2host($tablespaceDir);
-
-$node->safe_psql('postgres', "CREATE TABLESPACE ts1 LOCATION '$realTSDir'");
+$node->safe_psql('postgres', "CREATE TABLESPACE ts1 LOCATION '$tablespaceDir'");
 $node->safe_psql('postgres',
 	'CREATE UNLOGGED TABLE ts1_unlogged (id int) TABLESPACE ts1');
 
diff --git a/src/test/recovery/t/017_shm.pl b/src/test/recovery/t/017_shm.pl
index 01772186754..52f3dd993c9 100644
--- a/src/test/recovery/t/017_shm.pl
+++ b/src/test/recovery/t/017_shm.pl
@@ -102,7 +102,7 @@ log_ipcs();
 # Scenarios involving no postmaster.pid, dead postmaster, and a live backend.
 # Use a regress.c function to emulate the responsiveness of a backend working
 # through a CPU-intensive task.
-my $regress_shlib = TestLib::perl2host($ENV{REGRESS_SHLIB});
+my $regress_shlib = $ENV{REGRESS_SHLIB};
 $gnat->safe_psql('postgres', <<EOSQL);
 CREATE FUNCTION wait_pid(int)
    RETURNS void
diff --git a/src/test/recovery/t/025_stuck_on_old_timeline.pl b/src/test/recovery/t/025_stuck_on_old_timeline.pl
index 9859c0b4976..1e0373fe2ac 100644
--- a/src/test/recovery/t/025_stuck_on_old_timeline.pl
+++ b/src/test/recovery/t/025_stuck_on_old_timeline.pl
@@ -28,7 +28,7 @@ $node_primary->init(allows_streaming => 1, has_archiving => 1);
 # Note: consistent use of forward slashes here avoids any escaping problems
 # that arise from use of backslashes. That means we need to double-quote all
 # the paths in the archive_command
-my $perlbin = TestLib::perl2host($^X);
+my $perlbin = $^X;
 $perlbin =~ s!\\!/!g if $TestLib::windows_os;
 my $archivedir_primary = $node_primary->archive_dir;
 $archivedir_primary =~ s!\\!/!g if $TestLib::windows_os;