1 # Copyright (C) 1999, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 # Please email any bugs, comments, and/or additions to this file to:
18 # gcc-patches@gcc.gnu.org
20 # This file defines procs for determining features supported by the target.
22 # Try to compile some code and return the messages printed by the compiler.
24 # BASENAME is a basename to use for temporary files.
25 # TYPE is the type of compilation to perform (see target_compile).
26 # CONTENTS gives the contents of the input file.
27 # The rest is optional:
28 # OPTIONS: additional compiler options to use.
29 proc get_compiler_messages {basename type contents args} {
32 if { [llength $args] > 0 } {
33 set options "additional_flags=[lindex $args 0]"
38 set src ${basename}[pid].c
40 assembly { set output ${basename}[pid].s }
41 object { set output ${basename}[pid].o }
46 set lines [${tool}_target_compile $src $output $type "$options"]
48 remote_file build delete $output
53 proc current_target_name { } {
55 if [info exists target_info(target,name)] {
56 set answer $target_info(target,name)
63 ###############################
64 # proc check_weak_available { }
65 ###############################
67 # weak symbols are only supported in some configs/object formats
68 # this proc returns 1 if they're supported, 0 if they're not, or -1 if unsure
70 proc check_weak_available { } {
74 # All mips targets should support it
76 if { [ string first "mips" $target_cpu ] >= 0 } {
80 # All solaris2 targets should support it
82 if { [regexp ".*-solaris2.*" $target_triplet] } {
86 # DEC OSF/1/Digital UNIX/Tru64 UNIX supports it
88 if { [regexp "alpha.*osf.*" $target_triplet] } {
92 # Windows targets Cygwin and MingW32 support it
94 if { [regexp ".*mingw32|.*cygwin" $target_triplet] } {
98 # HP-UX 10.X doesn't support it
100 if { [regexp "hppa.*hpux10" $target_triplet] } {
104 # ELF and ECOFF support it. a.out does with gas/gld but may also with
105 # other linkers, so we should try it
107 set objformat [gcc_target_object_format]
115 unknown { return -1 }
120 ###############################
121 # proc check_visibility_available { what_kind }
122 ###############################
124 # The visibility attribute is only support in some object formats
125 # This proc returns 1 if it is supported, 0 if not.
126 # The argument is the kind of visibility, default/protected/hidden/internal.
128 proc check_visibility_available { what_kind } {
129 global visibility_available_saved
131 global target_triplet
133 # On NetWare, support makes no sense.
134 if { [string match "*-*-netware*" $target_triplet] } {
138 if [string match "" $what_kind] { set what_kind "hidden" }
140 if { [info exists visibility_available_saved] } {
141 verbose "Saved result is <$visibility_available_saved>" 1
142 if { [ lsearch -exact $visibility_available_saved $what_kind ] != -1 } {
144 } elseif { [ lsearch -exact $visibility_available_saved "!$what_kind" ] != -1 } {
149 set lines [get_compiler_messages visibility object "
150 void f() __attribute__((visibility(\"$what_kind\")));
153 if [string match "" $lines] then {
155 lappend visibility_available_saved $what_kind
158 lappend visibility_available_saved "!$what_kind"
163 ###############################
164 # proc check_alias_available { }
165 ###############################
167 # Determine if the target toolchain supports the alias attribute.
169 # Returns 2 if the target supports aliases. Returns 1 if the target
170 # only supports weak aliased. Returns 0 if the target does not
171 # support aliases at all. Returns -1 if support for aliases could not
174 proc check_alias_available { } {
175 global alias_available_saved
178 if [info exists alias_available_saved] {
179 verbose "check_alias_available returning saved $alias_available_saved" 2
183 verbose "check_alias_available compiling testfile $src" 2
184 set f [open $src "w"]
185 # Compile a small test program. The definition of "g" is
186 # necessary to keep the Solaris assembler from complaining
188 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
189 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
191 set lines [${tool}_target_compile $src $obj object ""]
193 remote_file build delete $obj
195 if [string match "" $lines] then {
196 # No error messages, everything is OK.
197 set alias_available_saved 2
199 if [regexp "alias definitions not supported" $lines] {
200 verbose "check_alias_available target does not support aliases" 2
202 set objformat [gcc_target_object_format]
204 if { $objformat == "elf" } {
205 verbose "check_alias_available but target uses ELF format, so it ought to" 2
206 set alias_available_saved -1
208 set alias_available_saved 0
211 if [regexp "only weak aliases are supported" $lines] {
212 verbose "check_alias_available target supports only weak aliases" 2
213 set alias_available_saved 1
215 set alias_available_saved -1
220 verbose "check_alias_available returning $alias_available_saved" 2
223 return $alias_available_saved
226 # Returns true if --gc-sections is supported on the target.
228 proc check_gc_sections_available { } {
229 global gc_sections_available_saved
232 if {![info exists gc_sections_available_saved]} {
233 # Some targets don't support gc-sections despite whatever's
234 # advertised by ld's options.
235 if { [istarget alpha*-*-*]
236 || [istarget ia64-*-*] } {
237 set gc_sections_available_saved 0
241 # Check if the ld used by gcc supports --gc-sections.
242 set gcc_spec [${tool}_target_compile "-dumpspecs" "" "none" ""]
243 regsub ".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
244 set gcc_ld [lindex [${tool}_target_compile "-print-prog-name=$linker" "" "none" ""] 0]
245 set ld_output [remote_exec host "$gcc_ld" "--help"]
246 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
247 set gc_sections_available_saved 1
249 set gc_sections_available_saved 0
252 return $gc_sections_available_saved
255 # Return true if profiling is supported on the target.
257 proc check_profiling_available { test_what } {
258 global profiling_available_saved
260 verbose "Profiling argument is <$test_what>" 1
262 # These conditions depend on the argument so examine them before
263 # looking at the cache variable.
265 # Support for -p on solaris2 relies on mcrt1.o which comes with the
266 # vendor compiler. We cannot reliably predict the directory where the
267 # vendor compiler (and thus mcrt1.o) is installed so we can't
268 # necessarily find mcrt1.o even if we have it.
269 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
273 # Support for -p on irix relies on libprof1.a which doesn't appear to
274 # exist on any irix6 system currently posting testsuite results.
275 # Support for -pg on irix relies on gcrt1.o which doesn't exist yet.
276 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
277 if { [istarget mips*-*-irix*]
278 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
282 # Now examine the cache variable.
283 if {![info exists profiling_available_saved]} {
284 # Some targets don't have any implementation of __bb_init_func or are
285 # missing other needed machinery.
286 if { [istarget mmix-*-*]
287 || [istarget arm*-*-eabi*]
288 || [istarget arm*-*-elf]
289 || [istarget arm*-*-symbianelf*]
290 || [istarget powerpc-*-eabi*]
291 || [istarget strongarm*-*-elf]
292 || [istarget xscale*-*-elf]
293 || [istarget cris-*-*]
294 || [istarget h8300-*-*]
295 || [istarget mips*-*-elf]
296 || [istarget xtensa-*-elf]
297 || [istarget *-*-windiss] } {
298 set profiling_available_saved 0
300 set profiling_available_saved 1
304 return $profiling_available_saved
307 # Return 1 if -fpic and -fPIC are supported, as in no warnings or errors
308 # emitted, 0 otherwise. Whether a shared library can actually be built is
309 # out of scope for this test.
311 # When the target name changes, replace the cached result.
313 proc check_effective_target_fpic { } {
315 global et_fpic_target_name
317 if { ![info exists et_fpic_target_name] } {
318 set et_fpic_target_name ""
321 # If the target has changed since we set the cached value, clear it.
322 set current_target [current_target_name]
323 if { $current_target != $et_fpic_target_name } {
324 verbose "check_effective_target_fpic: `$et_fpic_target_name'" 2
325 set et_fpic_target_name $current_target
326 if [info exists et_fpic_saved] {
327 verbose "check_effective_target_fpic: removing cached result" 2
332 if [info exists et_fpic_saved] {
333 verbose "check_effective_target_fpic: using cached result" 2
335 verbose "check_effective_target_fpic: compiling source" 2
337 # Note that M68K has a multilib that supports -fpic but not
338 # -fPIC, so we need to check both. We test with a program that
339 # requires GOT references.
340 set et_fpic_saved [string match "" [get_compiler_messages fpic object {
341 extern int foo (void); extern int bar;
342 int baz (void) { return foo () + bar; }
345 if { $et_fpic_saved != 0 } {
346 set et_fpic_saved [string match "" [get_compiler_messages fpic object {
347 extern int foo (void); extern int bar;
348 int baz (void) { return foo () + bar; }
352 verbose "check_effective_target_fpic: returning $et_fpic_saved" 2
353 return $et_fpic_saved
356 # Return true if iconv is supported on the target. In particular IBM1047.
358 proc check_iconv_available { test_what } {
366 verbose "check_iconv_available compiling testfile $src" 2
367 set f [open $src "w"]
368 # Compile a small test program.
369 puts $f "#include <iconv.h>\n"
370 puts $f "int main (void)\n {\n iconv_t cd; \n"
371 puts $f "cd = iconv_open (\"[lindex $test_what 1]\", \"UTF-8\");\n"
372 puts $f "if (cd == (iconv_t) -1)\n return 1;\n"
373 puts $f "return 0;\n}"
376 # If the tool configuration file has not set libiconv, try "-liconv"
377 if { ![info exists libiconv] } {
378 set libiconv "-liconv"
380 set lines [${tool}_target_compile $src $exe executable "libs=$libiconv" ]
383 if [string match "" $lines] then {
384 # No error messages, everything is OK.
386 set result [${tool}_load "./$exe" "" ""]
387 set status [lindex $result 0]
388 remote_file build delete $exe
390 verbose "check_iconv_available status is <$status>" 2
392 if { $status == "pass" } then {
400 # Return true if named sections are supported on this target.
401 # This proc does not cache results, because the answer may vary
402 # when cycling over subtarget options (e.g. irix o32/n32/n64) in
404 proc check_named_sections_available { } {
405 verbose "check_named_sections_available: compiling source" 2
406 set answer [string match "" [get_compiler_messages named object {
407 int __attribute__ ((section("whatever"))) foo;
409 verbose "check_named_sections_available: returning $answer" 2
413 # Return 1 if the target supports executing AltiVec instructions, 0
414 # otherwise. Cache the result.
416 proc check_vmx_hw_available { } {
417 global vmx_hw_available_saved
420 if [info exists vmx_hw_available_saved] {
421 verbose "check_hw_available returning saved $vmx_hw_available_saved" 2
423 set vmx_hw_available_saved 0
425 # Some simulators are known to not support VMX instructions.
426 if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
427 verbose "check_hw_available returning 0" 2
428 return $vmx_hw_available_saved
431 # Set up, compile, and execute a test program containing VMX
432 # instructions. Include the current process ID in the file
433 # names to prevent conflicts with invocations for multiple
438 set f [open $src "w"]
439 puts $f "int main() {"
440 puts $f "#ifdef __MACH__"
441 puts $f " asm volatile (\"vor v0,v0,v0\");"
443 puts $f " asm volatile (\"vor 0,0,0\");"
445 puts $f " return 0; }"
448 # Most targets don't require special flags for this test case, but
450 if [istarget *-*-darwin*] {
451 set opts "additional_flags=-maltivec"
456 verbose "check_vmx_hw_available compiling testfile $src" 2
457 set lines [${tool}_target_compile $src $exe executable "$opts"]
460 if [string match "" $lines] then {
461 # No error message, compilation succeeded.
462 set result [${tool}_load "./$exe" "" ""]
463 set status [lindex $result 0]
464 remote_file build delete $exe
465 verbose "check_vmx_hw_available testfile status is <$status>" 2
467 if { $status == "pass" } then {
468 set vmx_hw_available_saved 1
471 verbose "check_vmx_hw_availalble testfile compilation failed" 2
475 return $vmx_hw_available_saved
478 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
479 # complex float arguments. This affects gfortran tests that call cabsf
480 # in libm built by an earlier compiler. Return 1 if libm uses the same
481 # argument passing as the compiler under test, 0 otherwise.
483 # When the target name changes, replace the cached result.
485 proc check_effective_target_broken_cplxf_arg { } {
486 global et_broken_cplxf_arg_saved
487 global et_broken_cplxf_arg_target_name
490 # Skip the work for targets known not to be affected.
491 if { ![istarget powerpc64-*-linux*] } {
493 } elseif { [is-effective-target ilp32] } {
497 if { ![info exists et_broken_cplxf_arg_target_name] } {
498 set et_broken_cplxf_arg_target_name ""
501 # If the target has changed since we set the cached value, clear it.
502 set current_target [current_target_name]
503 if { $current_target != $et_broken_cplxf_arg_target_name } {
504 verbose "check_effective_target_broken_cplxf_arg: `$et_broken_cplxf_arg_target_name'" 2
505 set et_broken_cplxf_arg_target_name $current_target
506 if [info exists et_broken_cplxf_arg_saved] {
507 verbose "check_effective_target_broken_cplxf_arg: removing cached result" 2
508 unset et_broken_cplxf_arg_saved
512 if [info exists et_broken_cplxf_arg_saved] {
513 verbose "check_effective_target_broken_cplxf_arg: using cached result" 2
515 set et_broken_cplxf_arg_saved 0
516 # This is only known to affect one target.
517 if { ![istarget powerpc64-*-linux*] || ![is-effective-target lp64] } {
518 set et_broken_cplxf_arg_saved 0
519 verbose "check_effective_target_broken_cplxf_arg: caching 0" 2
520 return $et_broken_cplxf_arg_saved
523 # Set up, compile, and execute a C test program that calls cabsf.
527 set f [open $src "w"]
528 puts $f "#include <complex.h>"
529 puts $f "extern void abort (void);"
530 puts $f "float fabsf (float);"
531 puts $f "float cabsf (_Complex float);"
532 puts $f "int main ()"
534 puts $f " _Complex float cf;"
536 puts $f " cf = 3 + 4.0fi;"
537 puts $f " f = cabsf (cf);"
538 puts $f " if (fabsf (f - 5.0) > 0.0001) abort ();"
543 set lines [${tool}_target_compile $src $exe executable "-lm"]
546 if [string match "" $lines] {
547 # No error message, compilation succeeded.
548 set result [${tool}_load "./$exe" "" ""]
549 set status [lindex $result 0]
550 remote_file build delete $exe
552 verbose "check_effective_target_broken_cplxf_arg: status is <$status>" 2
554 if { $status != "pass" } {
555 set et_broken_cplxf_arg_saved 1
558 verbose "check_effective_target_broken_cplxf_arg: compilation failed" 2
561 return $et_broken_cplxf_arg_saved
564 proc check_alpha_max_hw_available { } {
565 global alpha_max_hw_available_saved
568 if [info exists alpha_max_hw_available_saved] {
569 verbose "check_alpha_max_hw_available returning saved $alpha_max_hw_available_saved" 2
571 set alpha_max_hw_available_saved 0
573 # Set up, compile, and execute a test program probing bit 8 of the
574 # architecture mask, which indicates presence of MAX instructions.
578 set f [open $src "w"]
579 puts $f "int main() { return __builtin_alpha_amask(1<<8) != 0; }"
582 verbose "check_alpha_max_hw_available compiling testfile $src" 2
583 set lines [${tool}_target_compile $src $exe executable ""]
586 if [string match "" $lines] then {
587 # No error message, compilation succeeded.
588 set result [${tool}_load "./$exe" "" ""]
589 set status [lindex $result 0]
590 remote_file build delete $exe
591 verbose "check_alpha_max_hw_available testfile status is <$status>" 2
593 if { $status == "pass" } then {
594 set alpha_max_hw_available_saved 1
597 verbose "check_alpha_max_hw_availalble testfile compilation failed" 2
601 return $alpha_max_hw_available_saved
604 # Returns true iff the FUNCTION is available on the target system.
605 # (This is essentially a Tcl implementation of Autoconf's
608 proc check_function_available { function } {
609 set var "${function}_available_saved"
613 if {![info exists $var]} {
616 # Check to make sure.
617 set src "function[pid].c"
618 set exe "function[pid].exe"
620 set f [open $src "w"]
621 puts $f "int main () { $function (); }"
624 set lines [${tool}_target_compile $src $exe executable ""]
628 if {![string match "" $lines]} then {
630 verbose -log "$function is not available"
632 verbose -log "$function is available"
639 # Returns ture iff "fork" is available on the target system.
641 proc check_fork_available {} {
642 return [check_function_available "fork"]
645 # Returns ture iff "mkfifo" is available on the target system.
647 proc check_mkfifo_available {} {
648 return [check_function_available "mkfifo"]
651 # Return 1 if we're generating 32-bit code using default options, 0
654 # When the target name changes, replace the cached result.
656 proc check_effective_target_ilp32 { } {
657 global et_ilp32_saved
658 global et_ilp32_target_name
660 if { ![info exists et_ilp32_target_name] } {
661 set et_ilp32_target_name ""
664 # If the target has changed since we set the cached value, clear it.
665 set current_target [current_target_name]
666 if { $current_target != $et_ilp32_target_name } {
667 verbose "check_effective_target_ilp32: `$et_ilp32_target_name' `$current_target'" 2
668 set et_ilp32_target_name $current_target
669 if { [info exists et_ilp32_saved] } {
670 verbose "check_effective_target_ilp32: removing cached result" 2
675 if [info exists et_ilp32_saved] {
676 verbose "check-effective_target_ilp32: using cached result" 2
678 verbose "check_effective_target_ilp32: compiling source" 2
679 set et_ilp32_saved [string match "" [get_compiler_messages ilp32 object {
680 int dummy[(sizeof (int) == 4 && sizeof (void *) == 4 && sizeof (long) == 4 ) ? 1 : -1];
683 verbose "check_effective_target_ilp32: returning $et_ilp32_saved" 2
684 return $et_ilp32_saved
687 # Return 1 if we're generating 64-bit code using default options, 0
690 # When the target name changes, replace the cached result.
692 proc check_effective_target_lp64 { } {
694 global et_lp64_target_name
696 if { ![info exists et_lp64_target_name] } {
697 set et_lp64_target_name ""
700 # If the target has changed since we set the cached value, clear it.
701 set current_target [current_target_name]
702 if { $current_target != $et_lp64_target_name } {
703 verbose "check_effective_target_lp64: `$et_lp64_target_name' `$current_target'" 2
704 set et_lp64_target_name $current_target
705 if [info exists et_lp64_saved] {
706 verbose "check_effective_target_lp64: removing cached result" 2
711 if [info exists et_lp64_saved] {
712 verbose "check_effective_target_lp64: using cached result" 2
714 verbose "check_effective_target_lp64: compiling source" 2
715 set et_lp64_saved [string match "" [get_compiler_messages lp64 object {
716 int dummy[(sizeof (int) == 4 && sizeof (void *) == 8 && sizeof (long) == 8 ) ? 1 : -1];
719 verbose "check_effective_target_lp64: returning $et_lp64_saved" 2
720 return $et_lp64_saved
723 # Return 1 if the target supports hardware vectors of int, 0 otherwise.
725 # This won't change for different subtargets so cache the result.
727 proc check_effective_target_vect_int { } {
728 global et_vect_int_saved
730 if [info exists et_vect_int_saved] {
731 verbose "check_effective_target_vect_int: using cached result" 2
733 set et_vect_int_saved 0
734 if { [istarget i?86-*-*]
735 || [istarget powerpc*-*-*]
736 || [istarget x86_64-*-*]
737 || [istarget sparc*-*-*]
738 || [istarget alpha*-*-*]
739 || [istarget ia64-*-*] } {
740 set et_vect_int_saved 1
744 verbose "check_effective_target_vect_int: returning $et_vect_int_saved" 2
745 return $et_vect_int_saved
748 # Return 1 is this is an arm target using 32-bit instructions
749 proc check_effective_target_arm32 { } {
750 global et_arm32_saved
751 global et_arm32_target_name
752 global compiler_flags
754 if { ![info exists et_arm32_target_name] } {
755 set et_arm32_target_name ""
758 # If the target has changed since we set the cached value, clear it.
759 set current_target [current_target_name]
760 if { $current_target != $et_arm32_target_name } {
761 verbose "check_effective_target_arm32: `$et_arm32_target_name' `$current_target'" 2
762 set et_arm32_target_name $current_target
763 if { [info exists et_arm32_saved] } {
764 verbose "check_effective_target_arm32: removing cached result" 2
769 if [info exists et_arm32_saved] {
770 verbose "check-effective_target_arm32: using cached result" 2
773 if { [istarget arm-*-*]
774 || [istarget strongarm*-*-*]
775 || [istarget xscale-*-*] } {
776 if ![string match "*-mthumb *" $compiler_flags] {
781 verbose "check_effective_target_arm32: returning $et_arm32_saved" 2
782 return $et_arm32_saved
785 # Return 1 if the target supports hardware vector shift operation.
787 proc check_effective_target_vect_shift { } {
788 if { [istarget powerpc*-*-*] } {
794 verbose "check_effective_target_vect_shift: returning $answer" 2
798 # Return 1 if the target supports hardware vectors of long, 0 otherwise.
800 # This can change for different subtargets so do not cache the result.
802 proc check_effective_target_vect_long { } {
803 if { [istarget i?86-*-*]
804 || ([istarget powerpc*-*-*] && [check_effective_target_ilp32])
805 || [istarget x86_64-*-*]
806 || ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
812 verbose "check_effective_target_vect_long: returning $answer" 2
816 # Return 1 if the target supports hardware vectors of float, 0 otherwise.
818 # This won't change for different subtargets so cache the result.
820 proc check_effective_target_vect_float { } {
821 global et_vect_float_saved
823 if [info exists et_vect_float_saved] {
824 verbose "check_effective_target_vect_float: using cached result" 2
826 set et_vect_float_saved 0
827 if { [istarget i?86-*-*]
828 || [istarget powerpc*-*-*]
829 || [istarget mipsisa64*-*-*]
830 || [istarget x86_64-*-*]
831 || [istarget ia64-*-*] } {
832 set et_vect_float_saved 1
836 verbose "check_effective_target_vect_float: returning $et_vect_float_saved" 2
837 return $et_vect_float_saved
840 # Return 1 if the target supports hardware vectors of double, 0 otherwise.
842 # This won't change for different subtargets so cache the result.
844 proc check_effective_target_vect_double { } {
845 global et_vect_double_saved
847 if [info exists et_vect_double_saved] {
848 verbose "check_effective_target_vect_double: using cached result" 2
850 set et_vect_double_saved 0
851 if { [istarget i?86-*-*]
852 || [istarget x86_64-*-*] } {
853 set et_vect_double_saved 1
857 verbose "check_effective_target_vect_double: returning $et_vect_double_saved" 2
858 return $et_vect_double_saved
861 # Return 1 if the target plus current options does not support a vector
862 # max instruction, 0 otherwise.
864 # This won't change for different subtargets so cache the result.
866 proc check_effective_target_vect_no_max { } {
867 global et_vect_no_max_saved
869 if [info exists et_vect_no_max_saved] {
870 verbose "check_effective_target_vect_no_max: using cached result" 2
872 set et_vect_no_max_saved 0
873 if { [istarget i?86-*-*]
874 || [istarget x86_64-*-*]
875 || [istarget sparc*-*-*]
876 || [istarget alpha*-*-*] } {
877 set et_vect_no_max_saved 1
880 verbose "check_effective_target_vect_no_max: returning $et_vect_no_max_saved" 2
881 return $et_vect_no_max_saved
884 # Return 1 if the target plus current options does not support vector
885 # bitwise instructions, 0 otherwise.
887 # This won't change for different subtargets so cache the result.
889 proc check_effective_target_vect_no_bitwise { } {
890 global et_vect_no_bitwise_saved
892 if [info exists et_vect_no_bitwise_saved] {
893 verbose "check_effective_target_vect_no_bitwise: using cached result" 2
895 set et_vect_no_bitwise_saved 0
897 verbose "check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
898 return $et_vect_no_bitwise_saved
901 # Return 1 if the target plus current options does not support a vector
902 # alignment mechanism, 0 otherwise.
904 # This won't change for different subtargets so cache the result.
906 proc check_effective_target_vect_no_align { } {
907 global et_vect_no_align_saved
909 if [info exists et_vect_no_align_saved] {
910 verbose "check_effective_target_vect_no_align: using cached result" 2
912 set et_vect_no_align_saved 0
913 if { [istarget mipsisa64*-*-*]
914 || [istarget sparc*-*-*]
915 || [istarget ia64-*-*] } {
916 set et_vect_no_align_saved 1
919 verbose "check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
920 return $et_vect_no_align_saved
923 # Return 1 if the target supports vector conditional operations, 0 otherwise.
925 proc check_effective_target_vect_condition { } {
926 global et_vect_cond_saved
928 if [info exists et_vect_int_cond] {
929 verbose "check_effective_target_vect_cond: using cached result" 2
931 set et_vect_cond_saved 0
932 if { [istarget powerpc*-*-*]
933 || [istarget ia64-*-*]
934 || [istarget i?86-*-*]
935 || [istarget x86_64-*-*] } {
936 set et_vect_cond_saved 1
940 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
941 return $et_vect_cond_saved
944 # Return 1 if the target supports vector int multiplication, 0 otherwise.
946 proc check_effective_target_vect_int_mult { } {
947 global et_vect_int_mult_saved
949 if [info exists et_vect_int_mult_saved] {
950 verbose "check_effective_target_vect_int_mult: using cached result" 2
952 set et_vect_int_mult_saved 0
953 if { [istarget powerpc*-*-*] } {
954 set et_vect_int_mult_saved 1
958 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
959 return $et_vect_int_mult_saved
962 # Return 1 if the target supports atomic operations on "int" and "long".
964 proc check_effective_target_sync_int_long { } {
965 global et_sync_int_long_saved
967 if [info exists et_sync_int_long_saved] {
968 verbose "check_effective_target_sync_int_long: using cached result" 2
970 set et_sync_int_long_saved 0
971 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
972 # load-reserved/store-conditional instructions.
973 if { [istarget ia64-*-*]
974 || [istarget i?86-*-*]
975 || [istarget x86_64-*-*]
976 || [istarget alpha*-*-*]
977 || [istarget powerpc*-*-*] } {
978 set et_sync_int_long_saved 1
982 verbose "check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
983 return $et_sync_int_long_saved
986 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
987 # This can be used with any check_* proc that takes no argument and
988 # returns only 1 or 0. It could be used with check_* procs that take
989 # arguments with keywords that pass particular arguments.
991 proc is-effective-target { arg } {
993 if { [info procs check_effective_target_${arg}] != [list] } {
994 set selected [check_effective_target_${arg}]
997 "vmx_hw" { set selected [check_vmx_hw_available] }
998 "named_sections" { set selected [check_named_sections_available] }
999 "gc_sections" { set selected [check_gc_sections_available] }
1000 default { error "unknown effective target keyword `$arg'" }
1003 verbose "is-effective-target: $arg $selected" 2
1007 # Return 1 if the argument is an effective-target keyword, 0 otherwise.
1009 proc is-effective-target-keyword { arg } {
1010 if { [info procs check_effective_target_${arg}] != [list] } {
1013 # These have different names for their check_* procs.
1015 "vmx_hw" { return 1 }
1016 "named_sections" { return 1 }
1017 "gc_sections" { return 1 }
1018 default { return 0 }