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# Copyright (C) 2003, 2007, 2008, 2010 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

load_lib copy-file.exp

proc dg-flags-pch { subdir test otherflags options suffix } {
    global runtests dg-do-what-default

    # If we're only testing specific files and this isn't one of them, skip it.
    if ![runtest_file_p $runtests $test] {
        return
    }
    set nshort "$subdir/[file tail $test]"
    set bname "[file rootname [file tail $nshort]]"

    catch { file_on_host delete "$bname$suffix.gch" }
    catch { file_on_host delete "$bname.s" }
    catch { file_on_host delete "$bname.s-gch" }

    # We don't try to use the loop-optimizing options, since they are highly
    # unlikely to make any difference to PCH.
    foreach flags $options {
        verbose "Testing $nshort, $otherflags $flags" 1

        # For the header files, the default is to precompile.
        set dg-do-what-default precompile
        catch { file_on_host delete "$bname$suffix" }
        gcc_copy_files "[file rootname $test]${suffix}s" "$bname$suffix"
        dg-test -keep-output "./$bname$suffix" "$otherflags $flags" ""

        # For the rest, the default is to compile to .s.
        set dg-do-what-default compile

        set have_errs [llength [grep $test "{\[ \t\]\+dg-error\[ \t\]\+.*\[ \t\]\+}"]]

        if { [ file_on_host exists "$bname$suffix.gch" ] } {
            # Ensure that the PCH file is used, not the original header.
            file_on_host delete "$bname$suffix"

            dg-test -keep-output $test "$otherflags $flags -I." ""
            file_on_host delete "$bname$suffix.gch"
            if { !$have_errs } {
                if { [ file_on_host exists "$bname.s" ] } {
                    remote_upload host "$bname.s" "$bname.s-gch"
                    remote_download host "$bname.s-gch"
                    gcc_copy_files "[file rootname $test]${suffix}s" "$bname$suffix"
                    dg-test -keep-output $test "$otherflags $flags -I." ""
                    remote_upload host "$bname.s"
                    set tmp [ diff "$bname.s" "$bname.s-gch" ]
                    if { $tmp == 0 } {
                        verbose -log "assembly file '$bname.s', '$bname.s-gch' comparison error"
                        fail "$nshort $otherflags $flags assembly comparison"
                    } elseif { $tmp == 1 } {
                        pass "$nshort $otherflags $flags assembly comparison"
                    } else {
                        fail "$nshort $otherflags $flags assembly comparison"
                    }
                    file_on_host delete "$bname$suffix"
                    file_on_host delete "$bname.s"
                    file_on_host delete "$bname.s-gch"
                } else {
                    verbose -log "assembly file '$bname.s' missing"
                    fail "$nshort $flags assembly comparison"
                }
            }
        } else {
            verbose -log "pch file '$bname$suffix.gch' missing"
            fail "$nshort $flags"
            if { !$have_errs } {
                verbose -log "assembly file '$bname.s' missing" 1
                fail "$nshort $flags assembly comparison"
            }
        }
    }
}

proc dg-pch { subdir test options suffix } {
  return [dg-flags-pch $subdir $test "" $options $suffix]
}