Correct the order of multilib_flagshjl/pr59971

Some testcases need explicit GCC options to properly run, like
gcc.target/i386/sse2-init-v2di-2.c has

/* { dg-options "-O2 -msse4 -march=core2 -dp" } */

-march=core2 is specified explicitly.  But with multlib, like

make check-gcc RUNTESTFLAGS="--target_board='unix{-march=k8}'

-march=k8 is appended to the command line options, which overrides
the the command line options specified by dg-options.  multlib flags
should be placed at the beginning of the command line options, not at
the end.  This patch adds gcc_default_target_compile, which is
almost identical to default_target_compile in dejagnu, except that
it has

    if {[board_info $dest exists multilib_flags]} {
        set add_flags "[board_info $dest multilib_flags] $add_flags"
    }

instead of

    if {[board_info $dest exists multilib_flags]} {
        append add_flags " [board_info $dest multilib_flags]"
    }

It replaces default_target_compile with gcc_default_target_compile.
Tested on Linux/x86-64 with RUNTESTFLAGS="--target_board='unix{-m32,}'".

	PR testsuite/59971
	* lib/gcc-defs.exp (gcc_default_target_compile): New.  Replace
	default_target_compile with gcc_default_target_compile.

1 files changed, 362 insertions, 0 deletions

diff --git a/gcc/testsuite/lib/gcc-defs.exp b/gcc/testsuite/lib/gcc-defs.exp
index 6f6e71928af..40a40a97cb1 100644
--- a/gcc/testsuite/lib/gcc-defs.exp
+++ b/gcc/testsuite/lib/gcc-defs.exp
@@ -349,3 +349,365 @@ proc gcc-set-multilib-library-path { compiler } {
 
     return $libpath
 }
+
+# This is almost identical to default_target_compile, except that
+# multilib_flags is prepended to add_flags instead of append so that
+# testcase can provide compiler options to override multilib_flags.
+
+proc gcc_default_target_compile {source destfile type options} {
+    global target_triplet
+    global tool_root_dir
+    global CFLAGS_FOR_TARGET
+    global compiler_flags
+
+    if { $destfile == "" && $type != "preprocess" && $type != "none" } {
+	error "Must supply an output filename for the compile to default_target_compile"
+    }
+
+    set add_flags ""
+    set libs ""
+    set compiler_type "c"
+    set compiler ""
+    set ldflags ""
+    set dest [target_info name]
+
+    if {[info exists CFLAGS_FOR_TARGET]} {
+	append add_flags " $CFLAGS_FOR_TARGET"
+    }
+
+    if {[info exists target_info(host,name)]} {
+	set host [host_info name]
+    } else {
+	set host "unix"
+    }
+
+    foreach i $options {
+
+	if { $i == "ada" } {
+	    set compiler_type "ada"
+	    if {[board_info $dest exists adaflags]} {
+		append add_flags " [target_info adaflags]"
+	    }
+	    if {[board_info $dest exists gnatmake]} {
+		set compiler [target_info gnatmake];
+	    } else {
+		set compiler [find_gnatmake];
+	    }
+	}
+	
+	if { $i == "c++" } {
+	    set compiler_type "c++"
+	    if {[board_info $dest exists cxxflags]} {
+		append add_flags " [target_info cxxflags]"
+	    }
+	    append add_flags " [g++_include_flags]"
+	    if {[board_info $dest exists c++compiler]} {
+		set compiler [target_info c++compiler]
+	    } else {
+		set compiler [find_g++]
+	    }
+	}
+
+	if { $i == "f77" } {
+	    set compiler_type "f77"
+	    if {[board_info $dest exists f77flags]} {
+		append add_flags " [target_info f77flags]"
+	    }
+	    if {[board_info $dest exists f77compiler]} {
+		set compiler [target_info f77compiler]
+	    } else {
+		set compiler [find_g77]
+	    }
+	}
+
+	if { $i == "f90" } {
+	    set compiler_type "f90"
+	    if {[board_info $dest exists f90flags]} {
+		append add_flags " [target_info f90flags]"
+	    }
+	    if {[board_info $dest exists f90compiler]} {
+		set compiler [target_info f90compiler]
+	    } else {
+		set compiler [find_gfortran]
+	    }
+	}
+
+	if {[regexp "^dest=" $i]} {
+	    regsub "^dest=" $i "" tmp
+	    if {[board_info $tmp exists name]} {
+		set dest [board_info $tmp name]
+	    } else {
+		set dest $tmp
+	    }
+	}
+	if {[regexp "^compiler=" $i]} {
+	    regsub "^compiler=" $i "" tmp
+	    set compiler $tmp
+	}
+	if {[regexp "^additional_flags=" $i]} {
+	    regsub "^additional_flags=" $i "" tmp
+	    append add_flags " $tmp"
+	}
+	if {[regexp "^ldflags=" $i]} {
+	    regsub "^ldflags=" $i "" tmp
+	    append ldflags " $tmp"
+	}
+	if {[regexp "^libs=" $i]} {
+	    regsub "^libs=" $i "" tmp
+	    append libs " $tmp"
+	}
+	if {[regexp "^incdir=" $i]} {
+	    regsub "^incdir=" $i "-I" tmp
+	    append add_flags " $tmp"
+	}
+	if {[regexp "^libdir=" $i]} {
+	    regsub "^libdir=" $i "-L" tmp
+	    append add_flags " $tmp"
+	}
+	if {[regexp "^ldscript=" $i]} {
+	    regsub "^ldscript=" $i "" ldscript
+	}
+ 	if {[regexp "^redirect=" $i]} {
+ 	    regsub "^redirect=" $i "" redirect
+ 	}
+ 	if {[regexp "^optimize=" $i]} {
+ 	    regsub "^optimize=" $i "" optimize
+ 	}
+ 	if {[regexp "^timeout=" $i]} {
+ 	    regsub "^timeout=" $i "" timeout
+ 	}
+    }
+
+    if {[board_info $host exists cflags_for_target]} {
+	append add_flags " [board_info $host cflags_for_target]"
+    }
+
+    global CC_FOR_TARGET
+    global CXX_FOR_TARGET
+    global F77_FOR_TARGET
+    global F90_FOR_TARGET
+    global GNATMAKE_FOR_TARGET
+
+    if {[info exists GNATMAKE_FOR_TARGET]} {
+	if { $compiler_type == "ada" } {
+	    set compiler $GNATMAKE_FOR_TARGET
+	}
+    }
+
+    if {[info exists CC_FOR_TARGET]} {
+	if { $compiler == "" } {
+	    set compiler $CC_FOR_TARGET
+	}
+    }
+
+    if {[info exists CXX_FOR_TARGET]} {
+	if { $compiler_type == "c++" } {
+	    set compiler $CXX_FOR_TARGET
+	}
+    }
+
+    if {[info exists F77_FOR_TARGET]} {
+	if { $compiler_type == "f77" } {
+	    set compiler $F77_FOR_TARGET
+	}
+    }
+
+    if {[info exists F90_FOR_TARGET]} {
+	if { $compiler_type == "f90" } {
+	    set compiler $F90_FOR_TARGET
+	}
+    }
+
+    if { $compiler == "" } {
+	set compiler [board_info $dest compiler]
+	if { $compiler == "" } {
+	    return "default_target_compile: No compiler to compile with"
+	}
+    }
+
+    if {![is_remote host]} {
+	if { [which $compiler] == 0 } {
+	    return "default_target_compile: Can't find $compiler."
+	}
+    }
+
+    if {$type == "object"} {
+	append add_flags " -c"
+    }
+
+    if { $type == "preprocess" } {
+	append add_flags " -E"
+    }
+
+    if { $type == "assembly" } {
+	append add_flags " -S"
+    }
+
+    if {[board_info $dest exists cflags]} {
+	append add_flags " [board_info $dest cflags]"
+    }
+
+    if { $type == "executable" } {
+	if {[board_info $dest exists ldflags]} {
+	    append add_flags " [board_info $dest ldflags]"
+	}
+	if { $compiler_type == "c++" } {
+	    append add_flags " [g++_link_flags]"
+	}
+	if {[isnative]} {
+	    # This is a lose.
+	    catch "glob -nocomplain $tool_root_dir/libstdc++/libstdc++.so* $tool_root_dir/libstdc++/libstdc++.sl" tmp
+	    if { ${tmp} != "" } {
+		if {[regexp ".*solaris2.*" $target_triplet]} {
+		    # Solaris 2
+		    append add_flags " -R$tool_root_dir/libstdc++"
+		} elseif {[regexp ".*(osf|irix5|linux).*" $target_triplet]} {
+		    # OSF/1 or IRIX 5
+		    append add_flags " -Wl,-rpath,$tool_root_dir/libstdc++"
+		} elseif {[regexp ".*hppa.*" $target_triplet]} {
+		    # HP-UX
+		    append add_flags " -Wl,-a,shared_archive"
+		}
+	    }
+	}
+    }
+
+    if {![info exists ldscript]} {
+	set ldscript [board_info $dest ldscript]
+    }
+
+    foreach i $options {
+	if { $i == "debug" } {
+	    if {[board_info $dest exists debug_flags]} {
+		append add_flags " [board_info $dest debug_flags]"
+	    } else {
+		append add_flags " -g"
+	    }
+	}
+    }
+
+    if {[info exists optimize]} {
+	append add_flags " $optimize"
+    }
+
+    if { $type == "executable" } {
+	append add_flags " $ldflags"
+	foreach x $libs {
+	    if {[file exists $x]} {
+		append source " $x"
+	    } else {
+		append add_flags " $x"
+	    }
+	}
+
+	if {[board_info $dest exists libs]} {
+	    append add_flags " [board_info $dest libs]"
+	}
+
+	# This probably isn't such a good idea, but it avoids nasty
+	# hackiness in the testsuites.
+	# The math library must be linked in before the C library.  The C
+	# library is linked in by the linker script, so this must be before
+	# the linker script.
+	if {[board_info $dest exists mathlib]} {
+	    append add_flags " [board_info $dest mathlib]"
+	} else {
+	    append add_flags " -lm"
+	}
+
+	# This must be added here.
+	append add_flags " $ldscript"
+
+	if {[board_info $dest exists remote_link]} {
+	    # Relink option.
+	    append add_flags " -Wl,-r"
+	}
+	if {[board_info $dest exists output_format]} {
+	    append add_flags " -Wl,-oformat,[board_info $dest output_format]"
+	}
+    }
+
+    if {[board_info $dest exists multilib_flags]} {
+	set add_flags "[board_info $dest multilib_flags] $add_flags"
+    }
+
+    verbose "doing compile"
+
+    set sources ""
+    if {[is_remote host]} {
+	foreach x $source {
+	    set file [remote_download host $x]
+	    if { $file == "" } {
+		warning "Unable to download $x to host."
+		return "Unable to download $x to host."
+	    } else {
+		append sources " $file"
+	    }
+	}
+    } else {
+	set sources $source
+    }
+
+    if {[is_remote host]} {
+	append add_flags " -o a.out"
+	remote_file host delete a.out
+    } else {
+	if { $destfile != "" } {
+	    append add_flags " -o $destfile"
+	}
+    }
+
+    # This is obscure: we put SOURCES at the end when building an
+    # object, because otherwise, in some situations, libtool will
+    # become confused about the name of the actual source file.
+    if {$type == "object"} {
+        set opts "$add_flags $sources"
+    } else {
+        set opts "$sources $add_flags"
+    }
+
+    if {[is_remote host]} {
+	if {[host_info exists use_at]} {
+	    set fid [open "atfile" "w"]
+	    puts $fid "$opts"
+	    close $fid
+	    set opts "@[remote_download host atfile]"
+	    remote_file build delete atfile
+	}
+    }
+
+    verbose "Invoking the compiler as $compiler $opts" 2
+
+    if {[info exists redirect]} {
+	verbose "Redirecting output to $redirect" 2
+	set status [remote_exec host "$compiler $opts" "" "" $redirect]
+    } else {
+	if {[info exists timeout]} {
+	    verbose "Setting timeout to $timeout" 2
+	    set status [remote_exec host "$compiler $opts" "" "" "" $timeout]
+	} else {
+	    set status [remote_exec host "$compiler $opts"]
+	}
+    }
+
+    set compiler_flags $opts
+    if {[is_remote host]} {
+	remote_upload host a.out $destfile
+	remote_file host delete a.out
+    }
+    set comp_output [prune_warnings [lindex $status 1]]
+    regsub "^\[\r\n\]+" $comp_output "" comp_output
+    if { [lindex $status 0] != 0 } {
+	verbose -log "compiler exited with status [lindex $status 0]"
+    }
+    if { [lindex $status 1] != "" } {
+	verbose -log "output is:\n[lindex $status 1]" 2
+    }
+    if { [lindex $status 0] != 0 && "${comp_output}" == "" } {
+	set comp_output "exit status is [lindex $status 0]"
+    }
+    return ${comp_output}
+}
+
+catch {rename default_target_compile {}}
+rename gcc_default_target_compile default_target_compile