1 # Copyright (C) 1999, 2001, 2003, 2004, 2005, 2006, 2007
2 # Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 3 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with GCC; see the file COPYING3. If not see
16 # <http://www.gnu.org/licenses/>.
18 # Please email any bugs, comments, and/or additions to this file to:
19 # gcc-patches@gcc.gnu.org
21 # This file defines procs for determining features supported by the target.
23 # Try to compile the code given by CONTENTS into an output file of
24 # type TYPE, where TYPE is as for target_compile. Return a list
25 # whose first element contains the compiler messages and whose
26 # second element is the name of the output file.
28 # BASENAME is a prefix to use for source and output files.
29 # If ARGS is not empty, its first element is a string that
30 # should be added to the command line.
32 # Assume by default that CONTENTS is C code. C++ code should contain
33 # "// C++" and Fortran code should contain "! Fortran".
34 proc check_compile {basename type contents args} {
37 if { [llength $args] > 0 } {
38 set options [list "additional_flags=[lindex $args 0]"]
42 switch -glob -- $contents {
43 "*! Fortran*" { set src ${basename}[pid].f90 }
44 "*// C++*" { set src ${basename}[pid].cc }
45 default { set src ${basename}[pid].c }
47 set compile_type $type
49 assembly { set output ${basename}[pid].s }
50 object { set output ${basename}[pid].o }
51 executable { set output ${basename}[pid].exe }
53 set output ${basename}[pid].s
54 lappend options "additional_flags=-fdump-$type"
55 set compile_type assembly
61 set lines [${tool}_target_compile $src $output $compile_type "$options"]
64 set scan_output $output
65 # Don't try folding this into the switch above; calling "glob" before the
66 # file is created won't work.
67 if [regexp "rtl-(.*)" $type dummy rtl_type] {
68 set scan_output "[glob $src.\[0-9\]\[0-9\]\[0-9\]r.$rtl_type]"
72 return [list $lines $scan_output]
75 proc current_target_name { } {
77 if [info exists target_info(target,name)] {
78 set answer $target_info(target,name)
85 # Implement an effective-target check for property PROP by invoking
86 # the Tcl command ARGS and seeing if it returns true.
88 proc check_cached_effective_target { prop args } {
91 set target [current_target_name]
92 if {![info exists et_cache($prop,target)]
93 || $et_cache($prop,target) != $target} {
94 verbose "check_cached_effective_target $prop: checking $target" 2
95 set et_cache($prop,target) $target
96 set et_cache($prop,value) [uplevel eval $args]
98 set value $et_cache($prop,value)
99 verbose "check_cached_effective_target $prop: returning $value for $target" 2
103 # Like check_compile, but delete the output file and return true if the
104 # compiler printed no messages.
105 proc check_no_compiler_messages_nocache {args} {
106 set result [eval check_compile $args]
107 set lines [lindex $result 0]
108 set output [lindex $result 1]
109 remote_file build delete $output
110 return [string match "" $lines]
113 # Like check_no_compiler_messages_nocache, but cache the result.
114 # PROP is the property we're checking, and doubles as a prefix for
115 # temporary filenames.
116 proc check_no_compiler_messages {prop args} {
117 return [check_cached_effective_target $prop {
118 eval [list check_no_compiler_messages_nocache $prop] $args
122 # Like check_compile, but return true if the compiler printed no
123 # messages and if the contents of the output file satisfy PATTERN.
124 # If PATTERN has the form "!REGEXP", the contents satisfy it if they
125 # don't match regular expression REGEXP, otherwise they satisfy it
126 # if they do match regular expression PATTERN. (PATTERN can start
127 # with something like "[!]" if the regular expression needs to match
128 # "!" as the first character.)
130 # Delete the output file before returning. The other arguments are
131 # as for check_compile.
132 proc check_no_messages_and_pattern_nocache {basename pattern args} {
135 set result [eval [list check_compile $basename] $args]
136 set lines [lindex $result 0]
137 set output [lindex $result 1]
140 if { [string match "" $lines] } {
141 set chan [open "$output"]
142 set invert [regexp {^!(.*)} $pattern dummy pattern]
143 set ok [expr { [regexp $pattern [read $chan]] != $invert }]
147 remote_file build delete $output
151 # Like check_no_messages_and_pattern_nocache, but cache the result.
152 # PROP is the property we're checking, and doubles as a prefix for
153 # temporary filenames.
154 proc check_no_messages_and_pattern {prop pattern args} {
155 return [check_cached_effective_target $prop {
156 eval [list check_no_messages_and_pattern_nocache $prop $pattern] $args
160 # Try to compile and run an executable from code CONTENTS. Return true
161 # if the compiler reports no messages and if execution "passes" in the
162 # usual DejaGNU sense. The arguments are as for check_compile, with
163 # TYPE implicitly being "executable".
164 proc check_runtime_nocache {basename contents args} {
167 set result [eval [list check_compile $basename executable $contents] $args]
168 set lines [lindex $result 0]
169 set output [lindex $result 1]
172 if { [string match "" $lines] } {
173 # No error messages, everything is OK.
174 set result [remote_load target "./$output" "" ""]
175 set status [lindex $result 0]
176 verbose "check_runtime_nocache $basename: status is <$status>" 2
177 if { $status == "pass" } {
181 remote_file build delete $output
185 # Like check_runtime_nocache, but cache the result. PROP is the
186 # property we're checking, and doubles as a prefix for temporary
188 proc check_runtime {prop args} {
191 return [check_cached_effective_target $prop {
192 eval [list check_runtime_nocache $prop] $args
196 ###############################
197 # proc check_weak_available { }
198 ###############################
200 # weak symbols are only supported in some configs/object formats
201 # this proc returns 1 if they're supported, 0 if they're not, or -1 if unsure
203 proc check_weak_available { } {
204 global target_triplet
207 # All mips targets should support it
209 if { [ string first "mips" $target_cpu ] >= 0 } {
213 # All solaris2 targets should support it
215 if { [regexp ".*-solaris2.*" $target_triplet] } {
219 # DEC OSF/1/Digital UNIX/Tru64 UNIX supports it
221 if { [regexp "alpha.*osf.*" $target_triplet] } {
225 # Windows targets Cygwin and MingW32 support it
227 if { [regexp ".*mingw32|.*cygwin" $target_triplet] } {
231 # HP-UX 10.X doesn't support it
233 if { [istarget "hppa*-*-hpux10*"] } {
237 # ELF and ECOFF support it. a.out does with gas/gld but may also with
238 # other linkers, so we should try it
240 set objformat [gcc_target_object_format]
248 unknown { return -1 }
253 ###############################
254 # proc check_visibility_available { what_kind }
255 ###############################
257 # The visibility attribute is only support in some object formats
258 # This proc returns 1 if it is supported, 0 if not.
259 # The argument is the kind of visibility, default/protected/hidden/internal.
261 proc check_visibility_available { what_kind } {
263 global target_triplet
265 # On NetWare, support makes no sense.
266 if { [istarget *-*-netware*] } {
270 if [string match "" $what_kind] { set what_kind "hidden" }
272 return [check_no_compiler_messages visibility_available_$what_kind object "
273 void f() __attribute__((visibility(\"$what_kind\")));
278 ###############################
279 # proc check_alias_available { }
280 ###############################
282 # Determine if the target toolchain supports the alias attribute.
284 # Returns 2 if the target supports aliases. Returns 1 if the target
285 # only supports weak aliased. Returns 0 if the target does not
286 # support aliases at all. Returns -1 if support for aliases could not
289 proc check_alias_available { } {
290 global alias_available_saved
293 if [info exists alias_available_saved] {
294 verbose "check_alias_available returning saved $alias_available_saved" 2
298 verbose "check_alias_available compiling testfile $src" 2
299 set f [open $src "w"]
300 # Compile a small test program. The definition of "g" is
301 # necessary to keep the Solaris assembler from complaining
303 puts $f "#ifdef __cplusplus\nextern \"C\"\n#endif\n"
304 puts $f "void g() {} void f() __attribute__((alias(\"g\")));"
306 set lines [${tool}_target_compile $src $obj object ""]
308 remote_file build delete $obj
310 if [string match "" $lines] then {
311 # No error messages, everything is OK.
312 set alias_available_saved 2
314 if [regexp "alias definitions not supported" $lines] {
315 verbose "check_alias_available target does not support aliases" 2
317 set objformat [gcc_target_object_format]
319 if { $objformat == "elf" } {
320 verbose "check_alias_available but target uses ELF format, so it ought to" 2
321 set alias_available_saved -1
323 set alias_available_saved 0
326 if [regexp "only weak aliases are supported" $lines] {
327 verbose "check_alias_available target supports only weak aliases" 2
328 set alias_available_saved 1
330 set alias_available_saved -1
335 verbose "check_alias_available returning $alias_available_saved" 2
338 return $alias_available_saved
341 # Returns true if --gc-sections is supported on the target.
343 proc check_gc_sections_available { } {
344 global gc_sections_available_saved
347 if {![info exists gc_sections_available_saved]} {
348 # Some targets don't support gc-sections despite whatever's
349 # advertised by ld's options.
350 if { [istarget alpha*-*-*]
351 || [istarget ia64-*-*] } {
352 set gc_sections_available_saved 0
356 # elf2flt uses -q (--emit-relocs), which is incompatible with
358 if { [board_info target exists ldflags]
359 && [regexp " -elf2flt\[ =\]" " [board_info target ldflags] "] } {
360 set gc_sections_available_saved 0
364 # VxWorks kernel modules are relocatable objects linked with -r,
365 # while RTP executables are linked with -q (--emit-relocs).
366 # Both of these options are incompatible with --gc-sections.
367 if { [istarget *-*-vxworks*] } {
368 set gc_sections_available_saved 0
372 # Check if the ld used by gcc supports --gc-sections.
373 set gcc_spec [${tool}_target_compile "-dumpspecs" "" "none" ""]
374 regsub ".*\n\*linker:\[ \t\]*\n(\[^ \t\n\]*).*" "$gcc_spec" {\1} linker
375 set gcc_ld [lindex [${tool}_target_compile "-print-prog-name=$linker" "" "none" ""] 0]
376 set ld_output [remote_exec host "$gcc_ld" "--help"]
377 if { [ string first "--gc-sections" $ld_output ] >= 0 } {
378 set gc_sections_available_saved 1
380 set gc_sections_available_saved 0
383 return $gc_sections_available_saved
386 # Return 1 if according to target_info struct and explicit target list
387 # target is supposed to support trampolines.
389 proc check_effective_target_trampolines { } {
390 if [target_info exists no_trampolines] {
393 if { [istarget avr-*-*]
394 || [istarget hppa2.0w-hp-hpux11.23]
395 || [istarget hppa64-hp-hpux11.23] } {
401 # Return 1 if according to target_info struct and explicit target list
402 # target is supposed to keep null pointer checks. This could be due to
403 # use of option fno-delete-null-pointer-checks or hardwired in target.
405 proc check_effective_target_keeps_null_pointer_checks { } {
406 if [target_info exists keeps_null_pointer_checks] {
409 if { [istarget avr-*-*] } {
415 # Return true if profiling is supported on the target.
417 proc check_profiling_available { test_what } {
418 global profiling_available_saved
420 verbose "Profiling argument is <$test_what>" 1
422 # These conditions depend on the argument so examine them before
423 # looking at the cache variable.
425 # Support for -p on solaris2 relies on mcrt1.o which comes with the
426 # vendor compiler. We cannot reliably predict the directory where the
427 # vendor compiler (and thus mcrt1.o) is installed so we can't
428 # necessarily find mcrt1.o even if we have it.
429 if { [istarget *-*-solaris2*] && [lindex $test_what 1] == "-p" } {
433 # Support for -p on irix relies on libprof1.a which doesn't appear to
434 # exist on any irix6 system currently posting testsuite results.
435 # Support for -pg on irix relies on gcrt1.o which doesn't exist yet.
436 # See: http://gcc.gnu.org/ml/gcc/2002-10/msg00169.html
437 if { [istarget mips*-*-irix*]
438 && ([lindex $test_what 1] == "-p" || [lindex $test_what 1] == "-pg") } {
442 # MinGW does not support -p.
443 if { [istarget *-*-mingw*] && [lindex $test_what 1] == "-p" } {
447 # At present, there is no profiling support on NetWare.
448 if { [istarget *-*-netware*] } {
452 # uClibc does not have gcrt1.o.
453 if { [check_effective_target_uclibc]
454 && ([lindex $test_what 1] == "-p"
455 || [lindex $test_what 1] == "-pg") } {
459 # Now examine the cache variable.
460 if {![info exists profiling_available_saved]} {
461 # Some targets don't have any implementation of __bb_init_func or are
462 # missing other needed machinery.
463 if { [istarget mmix-*-*]
464 || [istarget arm*-*-eabi*]
465 || [istarget arm*-*-elf]
466 || [istarget arm*-*-symbianelf*]
467 || [istarget avr-*-*]
468 || [istarget bfin-*-*]
469 || [istarget powerpc-*-eabi*]
470 || [istarget cris-*-*]
471 || [istarget crisv32-*-*]
472 || [istarget fido-*-elf]
473 || [istarget h8300-*-*]
474 || [istarget m32c-*-elf]
475 || [istarget m68k-*-elf]
476 || [istarget m68k-*-uclinux*]
477 || [istarget mips*-*-elf*]
478 || [istarget xstormy16-*]
479 || [istarget xtensa-*-elf]
480 || [istarget *-*-vxworks*] } {
481 set profiling_available_saved 0
483 set profiling_available_saved 1
487 return $profiling_available_saved
490 # Return 1 if target has packed layout of structure members by
491 # default, 0 otherwise. Note that this is slightly different than
492 # whether the target has "natural alignment": both attributes may be
495 proc check_effective_target_default_packed { } {
496 return [check_no_compiler_messages default_packed assembly {
497 struct x { char a; long b; } c;
498 int s[sizeof (c) == sizeof (char) + sizeof (long) ? 1 : -1];
502 # Return 1 if target has PCC_BITFIELD_TYPE_MATTERS defined. See
503 # documentation, where the test also comes from.
505 proc check_effective_target_pcc_bitfield_type_matters { } {
506 # PCC_BITFIELD_TYPE_MATTERS isn't just about unnamed or empty
507 # bitfields, but let's stick to the example code from the docs.
508 return [check_no_compiler_messages pcc_bitfield_type_matters assembly {
509 struct foo1 { char x; char :0; char y; };
510 struct foo2 { char x; int :0; char y; };
511 int s[sizeof (struct foo1) != sizeof (struct foo2) ? 1 : -1];
515 # Return 1 if thread local storage (TLS) is supported, 0 otherwise.
517 # This won't change for different subtargets so cache the result.
519 proc check_effective_target_tls {} {
520 return [check_no_compiler_messages tls assembly {
522 int f (void) { return i; }
523 void g (int j) { i = j; }
527 # Return 1 if *native* thread local storage (TLS) is supported, 0 otherwise.
529 # This won't change for different subtargets so cache the result.
531 proc check_effective_target_tls_native {} {
532 # VxWorks uses emulated TLS machinery, but with non-standard helper
533 # functions, so we fail to automatically detect it.
534 global target_triplet
535 if { [regexp ".*-.*-vxworks.*" $target_triplet] } {
539 return [check_no_messages_and_pattern tls_native "!emutls" assembly {
541 int f (void) { return i; }
542 void g (int j) { i = j; }
546 # Return 1 if TLS executables can run correctly, 0 otherwise.
548 # This won't change for different subtargets so cache the result.
550 proc check_effective_target_tls_runtime {} {
551 return [check_runtime tls_runtime {
552 __thread int thr = 0;
553 int main (void) { return thr; }
557 # Return 1 if compilation with -fopenmp is error-free for trivial
560 proc check_effective_target_fopenmp {} {
561 return [check_no_compiler_messages fopenmp object {
566 # Return 1 if compilation with -pthread is error-free for trivial
569 proc check_effective_target_pthread {} {
570 return [check_no_compiler_messages pthread object {
575 # Return 1 if the target supports -fstack-protector
576 proc check_effective_target_fstack_protector {} {
577 return [check_runtime fstack_protector {
578 int main (void) { return 0; }
579 } "-fstack-protector"]
582 # Return 1 if compilation with -freorder-blocks-and-partition is error-free
583 # for trivial code, 0 otherwise.
585 proc check_effective_target_freorder {} {
586 return [check_no_compiler_messages freorder object {
588 } "-freorder-blocks-and-partition"]
591 # Return 1 if -fpic and -fPIC are supported, as in no warnings or errors
592 # emitted, 0 otherwise. Whether a shared library can actually be built is
593 # out of scope for this test.
595 proc check_effective_target_fpic { } {
596 # Note that M68K has a multilib that supports -fpic but not
597 # -fPIC, so we need to check both. We test with a program that
598 # requires GOT references.
599 foreach arg {fpic fPIC} {
600 if [check_no_compiler_messages $arg object {
601 extern int foo (void); extern int bar;
602 int baz (void) { return foo () + bar; }
610 # Return true if the target supports -mpaired-single (as used on MIPS).
612 proc check_effective_target_mpaired_single { } {
613 return [check_no_compiler_messages mpaired_single object {
618 # Return true if the target has access to FPU instructions.
620 proc check_effective_target_hard_float { } {
621 if { [istarget mips*-*-*] } {
622 return [check_no_compiler_messages hard_float assembly {
623 #if (defined __mips_soft_float || defined __mips16)
629 # The generic test equates hard_float with "no call for adding doubles".
630 return [check_no_messages_and_pattern hard_float "!\\(call" rtl-expand {
631 double a (double b, double c) { return b + c; }
635 # Return true if the target is a 64-bit MIPS target.
637 proc check_effective_target_mips64 { } {
638 return [check_no_compiler_messages mips64 assembly {
645 # Return true if the target is a MIPS target that does not produce
648 proc check_effective_target_nomips16 { } {
649 return [check_no_compiler_messages nomips16 object {
653 /* A cheap way of testing for -mflip-mips16. */
654 void foo (void) { asm ("addiu $20,$20,1"); }
655 void bar (void) { asm ("addiu $20,$20,1"); }
660 # Add the options needed for MIPS16 function attributes. At the moment,
661 # we don't support MIPS16 PIC.
663 proc add_options_for_mips16_attribute { flags } {
664 return "$flags -mno-abicalls -fno-pic -DMIPS16=__attribute__((mips16))"
667 # Return true if we can force a mode that allows MIPS16 code generation.
668 # We don't support MIPS16 PIC, and only support MIPS16 -mhard-float
671 proc check_effective_target_mips16_attribute { } {
672 return [check_no_compiler_messages mips16_attribute assembly {
676 #if defined __mips_hard_float \
677 && (!defined _ABIO32 || _MIPS_SIM != _ABIO32) \
678 && (!defined _ABIO64 || _MIPS_SIM != _ABIO64)
681 } [add_options_for_mips16_attribute ""]]
684 # Return 1 if the current multilib does not generate PIC by default.
686 proc check_effective_target_nonpic { } {
687 return [check_no_compiler_messages nonpic assembly {
694 # Return 1 if the target does not use a status wrapper.
696 proc check_effective_target_unwrapped { } {
697 if { [target_info needs_status_wrapper] != "" \
698 && [target_info needs_status_wrapper] != "0" } {
704 # Return true if iconv is supported on the target. In particular IBM1047.
706 proc check_iconv_available { test_what } {
709 # If the tool configuration file has not set libiconv, try "-liconv"
710 if { ![info exists libiconv] } {
711 set libiconv "-liconv"
713 set test_what [lindex $test_what 1]
714 return [check_runtime_nocache $test_what [subst {
720 cd = iconv_open ("$test_what", "UTF-8");
721 if (cd == (iconv_t) -1)
728 # Return true if named sections are supported on this target.
730 proc check_named_sections_available { } {
731 return [check_no_compiler_messages named_sections assembly {
732 int __attribute__ ((section("whatever"))) foo;
736 # Return 1 if the target supports Fortran real kinds larger than real(8),
739 # When the target name changes, replace the cached result.
741 proc check_effective_target_fortran_large_real { } {
742 return [check_no_compiler_messages fortran_large_real executable {
744 integer,parameter :: k = selected_real_kind (precision (0.0_8) + 1)
751 # Return 1 if the target supports Fortran integer kinds larger than
752 # integer(8), 0 otherwise.
754 # When the target name changes, replace the cached result.
756 proc check_effective_target_fortran_large_int { } {
757 return [check_no_compiler_messages fortran_large_int executable {
759 integer,parameter :: k = selected_int_kind (range (0_8) + 1)
765 # Return 1 if the target supports Fortran integer(16), 0 otherwise.
767 # When the target name changes, replace the cached result.
769 proc check_effective_target_fortran_integer_16 { } {
770 return [check_no_compiler_messages fortran_integer_16 executable {
777 # Return 1 if we can statically link libgfortran, 0 otherwise.
779 # When the target name changes, replace the cached result.
781 proc check_effective_target_static_libgfortran { } {
782 return [check_no_compiler_messages static_libgfortran executable {
789 # Return 1 if the target supports executing 750CL paired-single instructions, 0
790 # otherwise. Cache the result.
792 proc check_750cl_hw_available { } {
793 return [check_cached_effective_target 750cl_hw_available {
794 # If this is not the right target then we can skip the test.
795 if { ![istarget powerpc-*paired*] } {
798 check_runtime_nocache 750cl_hw_available {
802 asm volatile ("ps_mul v0,v0,v0");
804 asm volatile ("ps_mul 0,0,0");
813 # Return 1 if the target supports executing SSE2 instructions, 0
814 # otherwise. Cache the result.
816 proc check_sse2_hw_available { } {
817 return [check_cached_effective_target sse2_hw_available {
818 # If this is not the right target then we can skip the test.
819 if { !([istarget x86_64-*-*] || [istarget i?86-*-*]) } {
822 check_runtime_nocache sse2_hw_available {
826 unsigned int eax, ebx, ecx, edx = 0;
827 if (__get_cpuid (1, &eax, &ebx, &ecx, &edx))
828 return !(edx & bit_SSE2);
836 # Return 1 if the target supports executing AltiVec instructions, 0
837 # otherwise. Cache the result.
839 proc check_vmx_hw_available { } {
840 return [check_cached_effective_target vmx_hw_available {
841 # Some simulators are known to not support VMX instructions.
842 if { [istarget powerpc-*-eabi] || [istarget powerpc*-*-eabispe] } {
845 # Most targets don't require special flags for this test case, but
847 if { [istarget *-*-darwin*]
848 || [istarget *-*-aix*] } {
849 set options "-maltivec"
853 check_runtime_nocache vmx_hw_available {
857 asm volatile ("vor v0,v0,v0");
859 asm volatile ("vor 0,0,0");
868 # GCC 3.4.0 for powerpc64-*-linux* included an ABI fix for passing
869 # complex float arguments. This affects gfortran tests that call cabsf
870 # in libm built by an earlier compiler. Return 1 if libm uses the same
871 # argument passing as the compiler under test, 0 otherwise.
873 # When the target name changes, replace the cached result.
875 proc check_effective_target_broken_cplxf_arg { } {
876 return [check_cached_effective_target broken_cplxf_arg {
877 # Skip the work for targets known not to be affected.
878 if { ![istarget powerpc64-*-linux*] } {
880 } elseif { ![is-effective-target lp64] } {
883 check_runtime_nocache broken_cplxf_arg {
885 extern void abort (void);
887 float cabsf (_Complex float);
894 if (fabsf (f - 5.0) > 0.0001)
903 proc check_alpha_max_hw_available { } {
904 return [check_runtime alpha_max_hw_available {
905 int main() { return __builtin_alpha_amask(1<<8) != 0; }
909 # Returns true iff the FUNCTION is available on the target system.
910 # (This is essentially a Tcl implementation of Autoconf's
913 proc check_function_available { function } {
914 return [check_no_compiler_messages ${function}_available \
920 int main () { $function (); }
924 # Returns true iff "fork" is available on the target system.
926 proc check_fork_available {} {
927 return [check_function_available "fork"]
930 # Returns true iff "mkfifo" is available on the target system.
932 proc check_mkfifo_available {} {
933 if {[istarget *-*-cygwin*]} {
934 # Cygwin has mkfifo, but support is incomplete.
938 return [check_function_available "mkfifo"]
941 # Returns true iff "__cxa_atexit" is used on the target system.
943 proc check_cxa_atexit_available { } {
944 return [check_cached_effective_target cxa_atexit_available {
945 if { [istarget "hppa*-*-hpux10*"] } {
946 # HP-UX 10 doesn't have __cxa_atexit but subsequent test passes.
949 check_runtime_nocache cxa_atexit_available {
952 static unsigned int count;
969 Y() { f(); count = 2; }
978 int main() { return 0; }
985 # Return 1 if we're generating 32-bit code using default options, 0
988 proc check_effective_target_ilp32 { } {
989 return [check_no_compiler_messages ilp32 object {
990 int dummy[sizeof (int) == 4
991 && sizeof (void *) == 4
992 && sizeof (long) == 4 ? 1 : -1];
996 # Return 1 if we're generating 32-bit or larger integers using default
997 # options, 0 otherwise.
999 proc check_effective_target_int32plus { } {
1000 return [check_no_compiler_messages int32plus object {
1001 int dummy[sizeof (int) >= 4 ? 1 : -1];
1005 # Return 1 if we're generating 32-bit or larger pointers using default
1006 # options, 0 otherwise.
1008 proc check_effective_target_ptr32plus { } {
1009 return [check_no_compiler_messages ptr32plus object {
1010 int dummy[sizeof (void *) >= 4 ? 1 : -1];
1014 # Return 1 if we support 32-bit or larger array and structure sizes
1015 # using default options, 0 otherwise.
1017 proc check_effective_target_size32plus { } {
1018 return [check_no_compiler_messages size32plus object {
1023 # Returns 1 if we're generating 16-bit or smaller integers with the
1024 # default options, 0 otherwise.
1026 proc check_effective_target_int16 { } {
1027 return [check_no_compiler_messages int16 object {
1028 int dummy[sizeof (int) < 4 ? 1 : -1];
1032 # Return 1 if we're generating 64-bit code using default options, 0
1035 proc check_effective_target_lp64 { } {
1036 return [check_no_compiler_messages lp64 object {
1037 int dummy[sizeof (int) == 4
1038 && sizeof (void *) == 8
1039 && sizeof (long) == 8 ? 1 : -1];
1043 # Return 1 if the target supports long double larger than double,
1046 proc check_effective_target_large_long_double { } {
1047 return [check_no_compiler_messages large_long_double object {
1048 int dummy[sizeof(long double) > sizeof(double) ? 1 : -1];
1052 # Return 1 if the target supports compiling fixed-point,
1055 proc check_effective_target_fixed_point { } {
1056 return [check_no_compiler_messages fixed_point object {
1057 _Sat _Fract x; _Sat _Accum y;
1061 # Return 1 if the target supports compiling decimal floating point,
1064 proc check_effective_target_dfp_nocache { } {
1065 verbose "check_effective_target_dfp_nocache: compiling source" 2
1066 set ret [check_no_compiler_messages_nocache dfp object {
1067 _Decimal32 x; _Decimal64 y; _Decimal128 z;
1069 verbose "check_effective_target_dfp_nocache: returning $ret" 2
1073 proc check_effective_target_dfprt_nocache { } {
1074 return [check_runtime_nocache dfprt {
1075 _Decimal32 x = 1.2df; _Decimal64 y = 2.3dd; _Decimal128 z;
1076 int main () { z = x + y; return 0; }
1080 # Return 1 if the target supports compiling Decimal Floating Point,
1083 # This won't change for different subtargets so cache the result.
1085 proc check_effective_target_dfp { } {
1086 return [check_cached_effective_target dfp {
1087 check_effective_target_dfp_nocache
1091 # Return 1 if the target supports linking and executing Decimal Floating
1092 # Point, # 0 otherwise.
1094 # This won't change for different subtargets so cache the result.
1096 proc check_effective_target_dfprt { } {
1097 return [check_cached_effective_target dfprt {
1098 check_effective_target_dfprt_nocache
1102 # Return 1 if the target needs a command line argument to enable a SIMD
1105 proc check_effective_target_vect_cmdline_needed { } {
1106 global et_vect_cmdline_needed_saved
1107 global et_vect_cmdline_needed_target_name
1109 if { ![info exists et_vect_cmdline_needed_target_name] } {
1110 set et_vect_cmdline_needed_target_name ""
1113 # If the target has changed since we set the cached value, clear it.
1114 set current_target [current_target_name]
1115 if { $current_target != $et_vect_cmdline_needed_target_name } {
1116 verbose "check_effective_target_vect_cmdline_needed: `$et_vect_cmdline_needed_target_name' `$current_target'" 2
1117 set et_vect_cmdline_needed_target_name $current_target
1118 if { [info exists et_vect_cmdline_needed_saved] } {
1119 verbose "check_effective_target_vect_cmdline_needed: removing cached result" 2
1120 unset et_vect_cmdline_needed_saved
1124 if [info exists et_vect_cmdline_needed_saved] {
1125 verbose "check_effective_target_vect_cmdline_needed: using cached result" 2
1127 set et_vect_cmdline_needed_saved 1
1128 if { [istarget ia64-*-*]
1129 || (([istarget x86_64-*-*] || [istarget i?86-*-*])
1130 && [check_effective_target_lp64])
1131 || ([istarget powerpc*-*-*]
1132 && ([check_effective_target_powerpc_spe]
1133 || [check_effective_target_powerpc_altivec]))
1134 || [istarget spu-*-*] } {
1135 set et_vect_cmdline_needed_saved 0
1139 verbose "check_effective_target_vect_cmdline_needed: returning $et_vect_cmdline_needed_saved" 2
1140 return $et_vect_cmdline_needed_saved
1143 # Return 1 if the target supports hardware vectors of int, 0 otherwise.
1145 # This won't change for different subtargets so cache the result.
1147 proc check_effective_target_vect_int { } {
1148 global et_vect_int_saved
1150 if [info exists et_vect_int_saved] {
1151 verbose "check_effective_target_vect_int: using cached result" 2
1153 set et_vect_int_saved 0
1154 if { [istarget i?86-*-*]
1155 || ([istarget powerpc*-*-*]
1156 && ![istarget powerpc-*-linux*paired*])
1157 || [istarget spu-*-*]
1158 || [istarget x86_64-*-*]
1159 || [istarget sparc*-*-*]
1160 || [istarget alpha*-*-*]
1161 || [istarget ia64-*-*] } {
1162 set et_vect_int_saved 1
1166 verbose "check_effective_target_vect_int: returning $et_vect_int_saved" 2
1167 return $et_vect_int_saved
1170 # Return 1 if the target supports int->float conversion
1173 proc check_effective_target_vect_intfloat_cvt { } {
1174 global et_vect_intfloat_cvt_saved
1176 if [info exists et_vect_intfloat_cvt_saved] {
1177 verbose "check_effective_target_vect_intfloat_cvt: using cached result" 2
1179 set et_vect_intfloat_cvt_saved 0
1180 if { [istarget i?86-*-*]
1181 || ([istarget powerpc*-*-*]
1182 && ![istarget powerpc-*-linux*paired*])
1183 || [istarget x86_64-*-*] } {
1184 set et_vect_intfloat_cvt_saved 1
1188 verbose "check_effective_target_vect_intfloat_cvt: returning $et_vect_intfloat_cvt_saved" 2
1189 return $et_vect_intfloat_cvt_saved
1193 # Return 1 if the target supports float->int conversion
1196 proc check_effective_target_vect_floatint_cvt { } {
1197 global et_vect_floatint_cvt_saved
1199 if [info exists et_vect_floatint_cvt_saved] {
1200 verbose "check_effective_target_vect_floatint_cvt: using cached result" 2
1202 set et_vect_floatint_cvt_saved 0
1203 if { [istarget i?86-*-*]
1204 || [istarget x86_64-*-*] } {
1205 set et_vect_floatint_cvt_saved 1
1209 verbose "check_effective_target_vect_floatint_cvt: returning $et_vect_floatint_cvt_saved" 2
1210 return $et_vect_floatint_cvt_saved
1213 # Return 1 is this is an arm target using 32-bit instructions
1214 proc check_effective_target_arm32 { } {
1215 return [check_no_compiler_messages arm32 assembly {
1216 #if !defined(__arm__) || (defined(__thumb__) && !defined(__thumb2__))
1222 # Return 1 if this is an ARM target supporting -mfpu=vfp
1223 # -mfloat-abi=softfp. Some multilibs may be incompatible with these
1226 proc check_effective_target_arm_vfp_ok { } {
1227 if { [check_effective_target_arm32] } {
1228 return [check_no_compiler_messages arm_vfp_ok object {
1230 } "-mfpu=vfp -mfloat-abi=softfp"]
1236 # Return 1 if this is an ARM target supporting -mfpu=neon
1237 # -mfloat-abi=softfp. Some multilibs may be incompatible with these
1240 proc check_effective_target_arm_neon_ok { } {
1241 if { [check_effective_target_arm32] } {
1242 return [check_no_compiler_messages arm_neon_ok object {
1244 } "-mfpu=neon -mfloat-abi=softfp"]
1250 # Return 1 if the target supports executing NEON instructions, 0
1251 # otherwise. Cache the result.
1253 proc check_effective_target_arm_neon_hw { } {
1254 return [check_runtime arm_neon_hw_available {
1258 long long a = 0, b = 1;
1259 asm ("vorr %P0, %P1, %P2"
1261 : "0" (a), "w" (b));
1264 } "-mfpu=neon -mfloat-abi=softfp"]
1267 # Return 1 if this a Loongson-2E or -2F target using an ABI that supports
1268 # the Loongson vector modes.
1270 proc check_effective_target_mips_loongson { } {
1271 return [check_no_compiler_messages loongson assembly {
1272 #if !defined(__mips_loongson_vector_rev)
1278 # Return 1 if this is a PowerPC target with floating-point registers.
1280 proc check_effective_target_powerpc_fprs { } {
1281 if { [istarget powerpc*-*-*]
1282 || [istarget rs6000-*-*] } {
1283 return [check_no_compiler_messages powerpc_fprs object {
1295 # Return 1 if this is a PowerPC target with hardware double-precision
1298 proc check_effective_target_powerpc_hard_double { } {
1299 if { [istarget powerpc*-*-*]
1300 || [istarget rs6000-*-*] } {
1301 return [check_no_compiler_messages powerpc_hard_double object {
1313 # Return 1 if this is a PowerPC target supporting -maltivec.
1315 proc check_effective_target_powerpc_altivec_ok { } {
1316 if { ([istarget powerpc*-*-*]
1317 && ![istarget powerpc-*-linux*paired*])
1318 || [istarget rs6000-*-*] } {
1319 # AltiVec is not supported on AIX before 5.3.
1320 if { [istarget powerpc*-*-aix4*]
1321 || [istarget powerpc*-*-aix5.1*]
1322 || [istarget powerpc*-*-aix5.2*] } {
1325 return [check_no_compiler_messages powerpc_altivec_ok object {
1333 # Return 1 if this is a PowerPC target that supports SPU.
1335 proc check_effective_target_powerpc_spu { } {
1336 if [istarget powerpc*-*-linux*] {
1337 return [check_effective_target_powerpc_altivec_ok]
1343 # Return 1 if this is a PowerPC target with SPE enabled.
1345 proc check_effective_target_powerpc_spe { } {
1346 if { [istarget powerpc*-*-*] } {
1347 return [check_no_compiler_messages powerpc_spe object {
1359 # Return 1 if this is a PowerPC target with Altivec enabled.
1361 proc check_effective_target_powerpc_altivec { } {
1362 if { [istarget powerpc*-*-*] } {
1363 return [check_no_compiler_messages powerpc_altivec object {
1375 # The VxWorks SPARC simulator accepts only EM_SPARC executables and
1376 # chokes on EM_SPARC32PLUS or EM_SPARCV9 executables. Return 1 if the
1377 # test environment appears to run executables on such a simulator.
1379 proc check_effective_target_ultrasparc_hw { } {
1380 return [check_runtime ultrasparc_hw {
1381 int main() { return 0; }
1382 } "-mcpu=ultrasparc"]
1385 # Return 1 if the target supports hardware vector shift operation.
1387 proc check_effective_target_vect_shift { } {
1388 global et_vect_shift_saved
1390 if [info exists et_vect_shift_saved] {
1391 verbose "check_effective_target_vect_shift: using cached result" 2
1393 set et_vect_shift_saved 0
1394 if { ([istarget powerpc*-*-*]
1395 && ![istarget powerpc-*-linux*paired*])
1396 || [istarget ia64-*-*]
1397 || [istarget i?86-*-*]
1398 || [istarget x86_64-*-*] } {
1399 set et_vect_shift_saved 1
1403 verbose "check_effective_target_vect_shift: returning $et_vect_shift_saved" 2
1404 return $et_vect_shift_saved
1407 # Return 1 if the target supports hardware vectors of long, 0 otherwise.
1409 # This can change for different subtargets so do not cache the result.
1411 proc check_effective_target_vect_long { } {
1412 if { [istarget i?86-*-*]
1413 || (([istarget powerpc*-*-*]
1414 && ![istarget powerpc-*-linux*paired*])
1415 && [check_effective_target_ilp32])
1416 || [istarget x86_64-*-*]
1417 || ([istarget sparc*-*-*] && [check_effective_target_ilp32]) } {
1423 verbose "check_effective_target_vect_long: returning $answer" 2
1427 # Return 1 if the target supports hardware vectors of float, 0 otherwise.
1429 # This won't change for different subtargets so cache the result.
1431 proc check_effective_target_vect_float { } {
1432 global et_vect_float_saved
1434 if [info exists et_vect_float_saved] {
1435 verbose "check_effective_target_vect_float: using cached result" 2
1437 set et_vect_float_saved 0
1438 if { [istarget i?86-*-*]
1439 || [istarget powerpc*-*-*]
1440 || [istarget spu-*-*]
1441 || [istarget mipsisa64*-*-*]
1442 || [istarget x86_64-*-*]
1443 || [istarget ia64-*-*] } {
1444 set et_vect_float_saved 1
1448 verbose "check_effective_target_vect_float: returning $et_vect_float_saved" 2
1449 return $et_vect_float_saved
1452 # Return 1 if the target supports hardware vectors of double, 0 otherwise.
1454 # This won't change for different subtargets so cache the result.
1456 proc check_effective_target_vect_double { } {
1457 global et_vect_double_saved
1459 if [info exists et_vect_double_saved] {
1460 verbose "check_effective_target_vect_double: using cached result" 2
1462 set et_vect_double_saved 0
1463 if { [istarget i?86-*-*]
1464 || [istarget x86_64-*-*]
1465 || [istarget spu-*-*] } {
1466 set et_vect_double_saved 1
1470 verbose "check_effective_target_vect_double: returning $et_vect_double_saved" 2
1471 return $et_vect_double_saved
1474 # Return 1 if the target plus current options does not support a vector
1475 # max instruction on "int", 0 otherwise.
1477 # This won't change for different subtargets so cache the result.
1479 proc check_effective_target_vect_no_int_max { } {
1480 global et_vect_no_int_max_saved
1482 if [info exists et_vect_no_int_max_saved] {
1483 verbose "check_effective_target_vect_no_int_max: using cached result" 2
1485 set et_vect_no_int_max_saved 0
1486 if { [istarget sparc*-*-*]
1487 || [istarget spu-*-*]
1488 || [istarget alpha*-*-*] } {
1489 set et_vect_no_int_max_saved 1
1492 verbose "check_effective_target_vect_no_int_max: returning $et_vect_no_int_max_saved" 2
1493 return $et_vect_no_int_max_saved
1496 # Return 1 if the target plus current options does not support a vector
1497 # add instruction on "int", 0 otherwise.
1499 # This won't change for different subtargets so cache the result.
1501 proc check_effective_target_vect_no_int_add { } {
1502 global et_vect_no_int_add_saved
1504 if [info exists et_vect_no_int_add_saved] {
1505 verbose "check_effective_target_vect_no_int_add: using cached result" 2
1507 set et_vect_no_int_add_saved 0
1508 # Alpha only supports vector add on V8QI and V4HI.
1509 if { [istarget alpha*-*-*] } {
1510 set et_vect_no_int_add_saved 1
1513 verbose "check_effective_target_vect_no_int_add: returning $et_vect_no_int_add_saved" 2
1514 return $et_vect_no_int_add_saved
1517 # Return 1 if the target plus current options does not support vector
1518 # bitwise instructions, 0 otherwise.
1520 # This won't change for different subtargets so cache the result.
1522 proc check_effective_target_vect_no_bitwise { } {
1523 global et_vect_no_bitwise_saved
1525 if [info exists et_vect_no_bitwise_saved] {
1526 verbose "check_effective_target_vect_no_bitwise: using cached result" 2
1528 set et_vect_no_bitwise_saved 0
1530 verbose "check_effective_target_vect_no_bitwise: returning $et_vect_no_bitwise_saved" 2
1531 return $et_vect_no_bitwise_saved
1534 # Return 1 if the target plus current options supports a vector
1535 # widening summation of *short* args into *int* result, 0 otherwise.
1536 # A target can also support this widening summation if it can support
1537 # promotion (unpacking) from shorts to ints.
1539 # This won't change for different subtargets so cache the result.
1541 proc check_effective_target_vect_widen_sum_hi_to_si { } {
1542 global et_vect_widen_sum_hi_to_si
1544 if [info exists et_vect_widen_sum_hi_to_si_saved] {
1545 verbose "check_effective_target_vect_widen_sum_hi_to_si: using cached result" 2
1547 set et_vect_widen_sum_hi_to_si_saved [check_effective_target_vect_unpack]
1548 if { [istarget powerpc*-*-*]
1549 || [istarget ia64-*-*] } {
1550 set et_vect_widen_sum_hi_to_si_saved 1
1553 verbose "check_effective_target_vect_widen_sum_hi_to_si: returning $et_vect_widen_sum_hi_to_si_saved" 2
1554 return $et_vect_widen_sum_hi_to_si_saved
1557 # Return 1 if the target plus current options supports a vector
1558 # widening summation of *char* args into *short* result, 0 otherwise.
1559 # A target can also support this widening summation if it can support
1560 # promotion (unpacking) from chars to shorts.
1562 # This won't change for different subtargets so cache the result.
1564 proc check_effective_target_vect_widen_sum_qi_to_hi { } {
1565 global et_vect_widen_sum_qi_to_hi
1567 if [info exists et_vect_widen_sum_qi_to_hi_saved] {
1568 verbose "check_effective_target_vect_widen_sum_qi_to_hi: using cached result" 2
1570 set et_vect_widen_sum_qi_to_hi_saved 0
1571 if { [check_effective_target_vect_unpack]
1572 || [istarget ia64-*-*] } {
1573 set et_vect_widen_sum_qi_to_hi_saved 1
1576 verbose "check_effective_target_vect_widen_sum_qi_to_hi: returning $et_vect_widen_sum_qi_to_hi_saved" 2
1577 return $et_vect_widen_sum_qi_to_hi_saved
1580 # Return 1 if the target plus current options supports a vector
1581 # widening summation of *char* args into *int* result, 0 otherwise.
1583 # This won't change for different subtargets so cache the result.
1585 proc check_effective_target_vect_widen_sum_qi_to_si { } {
1586 global et_vect_widen_sum_qi_to_si
1588 if [info exists et_vect_widen_sum_qi_to_si_saved] {
1589 verbose "check_effective_target_vect_widen_sum_qi_to_si: using cached result" 2
1591 set et_vect_widen_sum_qi_to_si_saved 0
1592 if { [istarget powerpc*-*-*] } {
1593 set et_vect_widen_sum_qi_to_si_saved 1
1596 verbose "check_effective_target_vect_widen_sum_qi_to_si: returning $et_vect_widen_sum_qi_to_si_saved" 2
1597 return $et_vect_widen_sum_qi_to_si_saved
1600 # Return 1 if the target plus current options supports a vector
1601 # widening multiplication of *char* args into *short* result, 0 otherwise.
1602 # A target can also support this widening multplication if it can support
1603 # promotion (unpacking) from chars to shorts, and vect_short_mult (non-widening
1604 # multiplication of shorts).
1606 # This won't change for different subtargets so cache the result.
1609 proc check_effective_target_vect_widen_mult_qi_to_hi { } {
1610 global et_vect_widen_mult_qi_to_hi
1612 if [info exists et_vect_widen_mult_qi_to_hi_saved] {
1613 verbose "check_effective_target_vect_widen_mult_qi_to_hi: using cached result" 2
1615 if { [check_effective_target_vect_unpack]
1616 && [check_effective_target_vect_short_mult] } {
1617 set et_vect_widen_mult_qi_to_hi_saved 1
1619 set et_vect_widen_mult_qi_to_hi_saved 0
1621 if { [istarget powerpc*-*-*] } {
1622 set et_vect_widen_mult_qi_to_hi_saved 1
1625 verbose "check_effective_target_vect_widen_mult_qi_to_hi: returning $et_vect_widen_mult_qi_to_hi_saved" 2
1626 return $et_vect_widen_mult_qi_to_hi_saved
1629 # Return 1 if the target plus current options supports a vector
1630 # widening multiplication of *short* args into *int* result, 0 otherwise.
1631 # A target can also support this widening multplication if it can support
1632 # promotion (unpacking) from shorts to ints, and vect_int_mult (non-widening
1633 # multiplication of ints).
1635 # This won't change for different subtargets so cache the result.
1638 proc check_effective_target_vect_widen_mult_hi_to_si { } {
1639 global et_vect_widen_mult_hi_to_si
1641 if [info exists et_vect_widen_mult_hi_to_si_saved] {
1642 verbose "check_effective_target_vect_widen_mult_hi_to_si: using cached result" 2
1644 if { [check_effective_target_vect_unpack]
1645 && [check_effective_target_vect_int_mult] } {
1646 set et_vect_widen_mult_hi_to_si_saved 1
1648 set et_vect_widen_mult_hi_to_si_saved 0
1650 if { [istarget powerpc*-*-*]
1651 || [istarget spu-*-*]
1652 || [istarget i?86-*-*]
1653 || [istarget x86_64-*-*] } {
1654 set et_vect_widen_mult_hi_to_si_saved 1
1657 verbose "check_effective_target_vect_widen_mult_hi_to_si: returning $et_vect_widen_mult_hi_to_si_saved" 2
1658 return $et_vect_widen_mult_hi_to_si_saved
1661 # Return 1 if the target plus current options supports a vector
1662 # dot-product of signed chars, 0 otherwise.
1664 # This won't change for different subtargets so cache the result.
1666 proc check_effective_target_vect_sdot_qi { } {
1667 global et_vect_sdot_qi
1669 if [info exists et_vect_sdot_qi_saved] {
1670 verbose "check_effective_target_vect_sdot_qi: using cached result" 2
1672 set et_vect_sdot_qi_saved 0
1674 verbose "check_effective_target_vect_sdot_qi: returning $et_vect_sdot_qi_saved" 2
1675 return $et_vect_sdot_qi_saved
1678 # Return 1 if the target plus current options supports a vector
1679 # dot-product of unsigned chars, 0 otherwise.
1681 # This won't change for different subtargets so cache the result.
1683 proc check_effective_target_vect_udot_qi { } {
1684 global et_vect_udot_qi
1686 if [info exists et_vect_udot_qi_saved] {
1687 verbose "check_effective_target_vect_udot_qi: using cached result" 2
1689 set et_vect_udot_qi_saved 0
1690 if { [istarget powerpc*-*-*] } {
1691 set et_vect_udot_qi_saved 1
1694 verbose "check_effective_target_vect_udot_qi: returning $et_vect_udot_qi_saved" 2
1695 return $et_vect_udot_qi_saved
1698 # Return 1 if the target plus current options supports a vector
1699 # dot-product of signed shorts, 0 otherwise.
1701 # This won't change for different subtargets so cache the result.
1703 proc check_effective_target_vect_sdot_hi { } {
1704 global et_vect_sdot_hi
1706 if [info exists et_vect_sdot_hi_saved] {
1707 verbose "check_effective_target_vect_sdot_hi: using cached result" 2
1709 set et_vect_sdot_hi_saved 0
1710 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
1711 || [istarget i?86-*-*]
1712 || [istarget x86_64-*-*] } {
1713 set et_vect_sdot_hi_saved 1
1716 verbose "check_effective_target_vect_sdot_hi: returning $et_vect_sdot_hi_saved" 2
1717 return $et_vect_sdot_hi_saved
1720 # Return 1 if the target plus current options supports a vector
1721 # dot-product of unsigned shorts, 0 otherwise.
1723 # This won't change for different subtargets so cache the result.
1725 proc check_effective_target_vect_udot_hi { } {
1726 global et_vect_udot_hi
1728 if [info exists et_vect_udot_hi_saved] {
1729 verbose "check_effective_target_vect_udot_hi: using cached result" 2
1731 set et_vect_udot_hi_saved 0
1732 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*]) } {
1733 set et_vect_udot_hi_saved 1
1736 verbose "check_effective_target_vect_udot_hi: returning $et_vect_udot_hi_saved" 2
1737 return $et_vect_udot_hi_saved
1741 # Return 1 if the target plus current options supports a vector
1742 # demotion (packing) of shorts (to chars) and ints (to shorts)
1743 # using modulo arithmetic, 0 otherwise.
1745 # This won't change for different subtargets so cache the result.
1747 proc check_effective_target_vect_pack_trunc { } {
1748 global et_vect_pack_trunc
1750 if [info exists et_vect_pack_trunc_saved] {
1751 verbose "check_effective_target_vect_pack_trunc: using cached result" 2
1753 set et_vect_pack_trunc_saved 0
1754 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
1755 || [istarget i?86-*-*]
1756 || [istarget x86_64-*-*] } {
1757 set et_vect_pack_trunc_saved 1
1760 verbose "check_effective_target_vect_pack_trunc: returning $et_vect_pack_trunc_saved" 2
1761 return $et_vect_pack_trunc_saved
1764 # Return 1 if the target plus current options supports a vector
1765 # promotion (unpacking) of chars (to shorts) and shorts (to ints), 0 otherwise.
1767 # This won't change for different subtargets so cache the result.
1769 proc check_effective_target_vect_unpack { } {
1770 global et_vect_unpack
1772 if [info exists et_vect_unpack_saved] {
1773 verbose "check_effective_target_vect_unpack: using cached result" 2
1775 set et_vect_unpack_saved 0
1776 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*paired*])
1777 || [istarget i?86-*-*]
1778 || [istarget x86_64-*-*]
1779 || [istarget spu-*-*] } {
1780 set et_vect_unpack_saved 1
1783 verbose "check_effective_target_vect_unpack: returning $et_vect_unpack_saved" 2
1784 return $et_vect_unpack_saved
1787 # Return 1 if the target plus current options does not guarantee
1788 # that its STACK_BOUNDARY is >= the reguired vector alignment.
1790 # This won't change for different subtargets so cache the result.
1792 proc check_effective_target_unaligned_stack { } {
1793 global et_unaligned_stack_saved
1795 if [info exists et_unaligned_stack_saved] {
1796 verbose "check_effective_target_unaligned_stack: using cached result" 2
1798 set et_unaligned_stack_saved 0
1799 if { ( [istarget i?86-*-*] || [istarget x86_64-*-*] )
1800 && (! [istarget *-*-darwin*] ) } {
1801 set et_unaligned_stack_saved 1
1804 verbose "check_effective_target_unaligned_stack: returning $et_unaligned_stack_saved" 2
1805 return $et_unaligned_stack_saved
1808 # Return 1 if the target plus current options does not support a vector
1809 # alignment mechanism, 0 otherwise.
1811 # This won't change for different subtargets so cache the result.
1813 proc check_effective_target_vect_no_align { } {
1814 global et_vect_no_align_saved
1816 if [info exists et_vect_no_align_saved] {
1817 verbose "check_effective_target_vect_no_align: using cached result" 2
1819 set et_vect_no_align_saved 0
1820 if { [istarget mipsisa64*-*-*]
1821 || [istarget sparc*-*-*]
1822 || [istarget ia64-*-*] } {
1823 set et_vect_no_align_saved 1
1826 verbose "check_effective_target_vect_no_align: returning $et_vect_no_align_saved" 2
1827 return $et_vect_no_align_saved
1830 # Return 1 if arrays are aligned to the vector alignment
1831 # boundary, 0 otherwise.
1833 # This won't change for different subtargets so cache the result.
1835 proc check_effective_target_vect_aligned_arrays { } {
1836 global et_vect_aligned_arrays
1838 if [info exists et_vect_aligned_arrays_saved] {
1839 verbose "check_effective_target_vect_aligned_arrays: using cached result" 2
1841 set et_vect_aligned_arrays_saved 0
1842 if { (([istarget x86_64-*-*]
1843 || [istarget i?86-*-*]) && [is-effective-target lp64])
1844 || [istarget spu-*-*] } {
1845 set et_vect_aligned_arrays_saved 1
1848 verbose "check_effective_target_vect_aligned_arrays: returning $et_vect_aligned_arrays_saved" 2
1849 return $et_vect_aligned_arrays_saved
1852 # Return 1 if types of size 32 bit or less are naturally aligned
1853 # (aligned to their type-size), 0 otherwise.
1855 # This won't change for different subtargets so cache the result.
1857 proc check_effective_target_natural_alignment_32 { } {
1858 global et_natural_alignment_32
1860 if [info exists et_natural_alignment_32_saved] {
1861 verbose "check_effective_target_natural_alignment_32: using cached result" 2
1863 # FIXME: 32bit powerpc: guaranteed only if MASK_ALIGN_NATURAL/POWER.
1864 set et_natural_alignment_32_saved 1
1865 if { ([istarget *-*-darwin*] && [is-effective-target lp64]) } {
1866 set et_natural_alignment_32_saved 0
1869 verbose "check_effective_target_natural_alignment_32: returning $et_natural_alignment_32_saved" 2
1870 return $et_natural_alignment_32_saved
1873 # Return 1 if types of size 64 bit or less are naturally aligned (aligned to their
1874 # type-size), 0 otherwise.
1876 # This won't change for different subtargets so cache the result.
1878 proc check_effective_target_natural_alignment_64 { } {
1879 global et_natural_alignment_64
1881 if [info exists et_natural_alignment_64_saved] {
1882 verbose "check_effective_target_natural_alignment_64: using cached result" 2
1884 set et_natural_alignment_64_saved 0
1885 if { ([is-effective-target lp64] && ![istarget *-*-darwin*])
1886 || [istarget spu-*-*] } {
1887 set et_natural_alignment_64_saved 1
1890 verbose "check_effective_target_natural_alignment_64: returning $et_natural_alignment_64_saved" 2
1891 return $et_natural_alignment_64_saved
1894 # Return 1 if vector alignment (for types of size 32 bit or less) is reachable, 0 otherwise.
1896 # This won't change for different subtargets so cache the result.
1898 proc check_effective_target_vector_alignment_reachable { } {
1899 global et_vector_alignment_reachable
1901 if [info exists et_vector_alignment_reachable_saved] {
1902 verbose "check_effective_target_vector_alignment_reachable: using cached result" 2
1904 if { [check_effective_target_vect_aligned_arrays]
1905 || [check_effective_target_natural_alignment_32] } {
1906 set et_vector_alignment_reachable_saved 1
1908 set et_vector_alignment_reachable_saved 0
1911 verbose "check_effective_target_vector_alignment_reachable: returning $et_vector_alignment_reachable_saved" 2
1912 return $et_vector_alignment_reachable_saved
1915 # Return 1 if vector alignment for 64 bit is reachable, 0 otherwise.
1917 # This won't change for different subtargets so cache the result.
1919 proc check_effective_target_vector_alignment_reachable_for_64bit { } {
1920 global et_vector_alignment_reachable_for_64bit
1922 if [info exists et_vector_alignment_reachable_for_64bit_saved] {
1923 verbose "check_effective_target_vector_alignment_reachable_for_64bit: using cached result" 2
1925 if { [check_effective_target_vect_aligned_arrays]
1926 || [check_effective_target_natural_alignment_64] } {
1927 set et_vector_alignment_reachable_for_64bit_saved 1
1929 set et_vector_alignment_reachable_for_64bit_saved 0
1932 verbose "check_effective_target_vector_alignment_reachable_for_64bit: returning $et_vector_alignment_reachable_for_64bit_saved" 2
1933 return $et_vector_alignment_reachable_for_64bit_saved
1936 # Return 1 if the target supports vector conditional operations, 0 otherwise.
1938 proc check_effective_target_vect_condition { } {
1939 global et_vect_cond_saved
1941 if [info exists et_vect_cond_saved] {
1942 verbose "check_effective_target_vect_cond: using cached result" 2
1944 set et_vect_cond_saved 0
1945 if { [istarget powerpc*-*-*]
1946 || [istarget ia64-*-*]
1947 || [istarget i?86-*-*]
1948 || [istarget spu-*-*]
1949 || [istarget x86_64-*-*] } {
1950 set et_vect_cond_saved 1
1954 verbose "check_effective_target_vect_cond: returning $et_vect_cond_saved" 2
1955 return $et_vect_cond_saved
1958 # Return 1 if the target supports vector char multiplication, 0 otherwise.
1960 proc check_effective_target_vect_char_mult { } {
1961 global et_vect_char_mult_saved
1963 if [info exists et_vect_char_mult_saved] {
1964 verbose "check_effective_target_vect_char_mult: using cached result" 2
1966 set et_vect_char_mult_saved 0
1967 if { [istarget ia64-*-*]
1968 || [istarget i?86-*-*]
1969 || [istarget x86_64-*-*] } {
1970 set et_vect_char_mult_saved 1
1974 verbose "check_effective_target_vect_char_mult: returning $et_vect_char_mult_saved" 2
1975 return $et_vect_char_mult_saved
1978 # Return 1 if the target supports vector short multiplication, 0 otherwise.
1980 proc check_effective_target_vect_short_mult { } {
1981 global et_vect_short_mult_saved
1983 if [info exists et_vect_short_mult_saved] {
1984 verbose "check_effective_target_vect_short_mult: using cached result" 2
1986 set et_vect_short_mult_saved 0
1987 if { [istarget ia64-*-*]
1988 || [istarget spu-*-*]
1989 || [istarget i?86-*-*]
1990 || [istarget x86_64-*-*] } {
1991 set et_vect_short_mult_saved 1
1995 verbose "check_effective_target_vect_short_mult: returning $et_vect_short_mult_saved" 2
1996 return $et_vect_short_mult_saved
1999 # Return 1 if the target supports vector int multiplication, 0 otherwise.
2001 proc check_effective_target_vect_int_mult { } {
2002 global et_vect_int_mult_saved
2004 if [info exists et_vect_int_mult_saved] {
2005 verbose "check_effective_target_vect_int_mult: using cached result" 2
2007 set et_vect_int_mult_saved 0
2008 if { ([istarget powerpc*-*-*] && ![istarget powerpc-*-linux*paired*])
2009 || [istarget spu-*-*]
2010 || [istarget i?86-*-*]
2011 || [istarget x86_64-*-*] } {
2012 set et_vect_int_mult_saved 1
2016 verbose "check_effective_target_vect_int_mult: returning $et_vect_int_mult_saved" 2
2017 return $et_vect_int_mult_saved
2020 # Return 1 if the target supports vector even/odd elements extraction, 0 otherwise.
2022 proc check_effective_target_vect_extract_even_odd { } {
2023 global et_vect_extract_even_odd_saved
2025 if [info exists et_vect_extract_even_odd_saved] {
2026 verbose "check_effective_target_vect_extract_even_odd: using cached result" 2
2028 set et_vect_extract_even_odd_saved 0
2029 if { [istarget powerpc*-*-*] } {
2030 set et_vect_extract_even_odd_saved 1
2034 verbose "check_effective_target_vect_extract_even_odd: returning $et_vect_extract_even_odd_saved" 2
2035 return $et_vect_extract_even_odd_saved
2038 # Return 1 if the target supports vector interleaving, 0 otherwise.
2040 proc check_effective_target_vect_interleave { } {
2041 global et_vect_interleave_saved
2043 if [info exists et_vect_interleave_saved] {
2044 verbose "check_effective_target_vect_interleave: using cached result" 2
2046 set et_vect_interleave_saved 0
2047 if { [istarget powerpc*-*-*]
2048 || [istarget i?86-*-*]
2049 || [istarget x86_64-*-*] } {
2050 set et_vect_interleave_saved 1
2054 verbose "check_effective_target_vect_interleave: returning $et_vect_interleave_saved" 2
2055 return $et_vect_interleave_saved
2058 # Return 1 if the target supports vector interleaving and extract even/odd, 0 otherwise.
2059 proc check_effective_target_vect_strided { } {
2060 global et_vect_strided_saved
2062 if [info exists et_vect_strided_saved] {
2063 verbose "check_effective_target_vect_strided: using cached result" 2
2065 set et_vect_strided_saved 0
2066 if { [check_effective_target_vect_interleave]
2067 && [check_effective_target_vect_extract_even_odd] } {
2068 set et_vect_strided_saved 1
2072 verbose "check_effective_target_vect_strided: returning $et_vect_strided_saved" 2
2073 return $et_vect_strided_saved
2076 # Return 1 if the target supports section-anchors
2078 proc check_effective_target_section_anchors { } {
2079 global et_section_anchors_saved
2081 if [info exists et_section_anchors_saved] {
2082 verbose "check_effective_target_section_anchors: using cached result" 2
2084 set et_section_anchors_saved 0
2085 if { [istarget powerpc*-*-*] } {
2086 set et_section_anchors_saved 1
2090 verbose "check_effective_target_section_anchors: returning $et_section_anchors_saved" 2
2091 return $et_section_anchors_saved
2094 # Return 1 if the target supports atomic operations on "int" and "long".
2096 proc check_effective_target_sync_int_long { } {
2097 global et_sync_int_long_saved
2099 if [info exists et_sync_int_long_saved] {
2100 verbose "check_effective_target_sync_int_long: using cached result" 2
2102 set et_sync_int_long_saved 0
2103 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
2104 # load-reserved/store-conditional instructions.
2105 if { [istarget ia64-*-*]
2106 || [istarget i?86-*-*]
2107 || [istarget x86_64-*-*]
2108 || [istarget alpha*-*-*]
2109 || [istarget s390*-*-*]
2110 || [istarget powerpc*-*-*]
2111 || [istarget sparc64-*-*]
2112 || [istarget sparcv9-*-*]
2113 || [istarget mips*-*-*] } {
2114 set et_sync_int_long_saved 1
2118 verbose "check_effective_target_sync_int_long: returning $et_sync_int_long_saved" 2
2119 return $et_sync_int_long_saved
2122 # Return 1 if the target supports atomic operations on "char" and "short".
2124 proc check_effective_target_sync_char_short { } {
2125 global et_sync_char_short_saved
2127 if [info exists et_sync_char_short_saved] {
2128 verbose "check_effective_target_sync_char_short: using cached result" 2
2130 set et_sync_char_short_saved 0
2131 # This is intentionally powerpc but not rs6000, rs6000 doesn't have the
2132 # load-reserved/store-conditional instructions.
2133 if { [istarget ia64-*-*]
2134 || [istarget i?86-*-*]
2135 || [istarget x86_64-*-*]
2136 || [istarget alpha*-*-*]
2137 || [istarget s390*-*-*]
2138 || [istarget powerpc*-*-*]
2139 || [istarget sparc64-*-*]
2140 || [istarget sparcv9-*-*]
2141 || [istarget mips*-*-*] } {
2142 set et_sync_char_short_saved 1
2146 verbose "check_effective_target_sync_char_short: returning $et_sync_char_short_saved" 2
2147 return $et_sync_char_short_saved
2150 # Return 1 if the target uses a ColdFire FPU.
2152 proc check_effective_target_coldfire_fpu { } {
2153 return [check_no_compiler_messages coldfire_fpu assembly {
2160 # Return true if this is a uClibc target.
2162 proc check_effective_target_uclibc {} {
2163 return [check_no_compiler_messages uclibc object {
2164 #include <features.h>
2165 #if !defined (__UCLIBC__)
2171 # Return true if this is a uclibc target and if the uclibc feature
2172 # described by __$feature__ is not present.
2174 proc check_missing_uclibc_feature {feature} {
2175 return [check_no_compiler_messages $feature object "
2176 #include <features.h>
2177 #if !defined (__UCLIBC) || defined (__${feature}__)
2183 # Return true if this is a Newlib target.
2185 proc check_effective_target_newlib {} {
2186 return [check_no_compiler_messages newlib object {
2192 # (a) an error of a few ULP is expected in string to floating-point
2193 # conversion functions; and
2194 # (b) overflow is not always detected correctly by those functions.
2196 proc check_effective_target_lax_strtofp {} {
2197 # By default, assume that all uClibc targets suffer from this.
2198 return [check_effective_target_uclibc]
2201 # Return 1 if this is a target for which wcsftime is a dummy
2202 # function that always returns 0.
2204 proc check_effective_target_dummy_wcsftime {} {
2205 # By default, assume that all uClibc targets suffer from this.
2206 return [check_effective_target_uclibc]
2209 # Return 1 if constructors with initialization priority arguments are
2210 # supposed on this target.
2212 proc check_effective_target_init_priority {} {
2213 return [check_no_compiler_messages init_priority assembly "
2214 void f() __attribute__((constructor (1000)));
2219 # Return 1 if the target matches the effective target 'arg', 0 otherwise.
2220 # This can be used with any check_* proc that takes no argument and
2221 # returns only 1 or 0. It could be used with check_* procs that take
2222 # arguments with keywords that pass particular arguments.
2224 proc is-effective-target { arg } {
2226 if { [info procs check_effective_target_${arg}] != [list] } {
2227 set selected [check_effective_target_${arg}]
2230 "vmx_hw" { set selected [check_vmx_hw_available] }
2231 "named_sections" { set selected [check_named_sections_available] }
2232 "gc_sections" { set selected [check_gc_sections_available] }
2233 "cxa_atexit" { set selected [check_cxa_atexit_available] }
2234 default { error "unknown effective target keyword `$arg'" }
2237 verbose "is-effective-target: $arg $selected" 2
2241 # Return 1 if the argument is an effective-target keyword, 0 otherwise.
2243 proc is-effective-target-keyword { arg } {
2244 if { [info procs check_effective_target_${arg}] != [list] } {
2247 # These have different names for their check_* procs.
2249 "vmx_hw" { return 1 }
2250 "named_sections" { return 1 }
2251 "gc_sections" { return 1 }
2252 "cxa_atexit" { return 1 }
2253 default { return 0 }
2258 # Return 1 if target default to short enums
2260 proc check_effective_target_short_enums { } {
2261 return [check_no_compiler_messages short_enums assembly {
2263 int s[sizeof (enum foo) == 1 ? 1 : -1];
2267 # Return 1 if target supports merging string constants at link time.
2269 proc check_effective_target_string_merging { } {
2270 return [check_no_messages_and_pattern string_merging \
2271 "rodata\\.str" assembly {
2272 const char *var = "String";
2276 # Return 1 if target has the basic signed and unsigned types in
2277 # <stdint.h>, 0 otherwise.
2279 proc check_effective_target_stdint_types { } {
2280 return [check_no_compiler_messages stdint_types assembly {
2282 int8_t a; int16_t b; int32_t c; int64_t d;
2283 uint8_t e; uint16_t f; uint32_t g; uint64_t h;
2287 # Return 1 if programs are intended to be run on a simulator
2288 # (i.e. slowly) rather than hardware (i.e. fast).
2290 proc check_effective_target_simulator { } {
2292 # All "src/sim" simulators set this one.
2293 if [board_info target exists is_simulator] {
2294 return [board_info target is_simulator]
2297 # The "sid" simulators don't set that one, but at least they set
2299 if [board_info target exists slow_simulator] {
2300 return [board_info target slow_simulator]
2306 # Return 1 if the target is a VxWorks kernel.
2308 proc check_effective_target_vxworks_kernel { } {
2309 return [check_no_compiler_messages vxworks_kernel assembly {
2310 #if !defined __vxworks || defined __RTP__
2316 # Return 1 if the target is a VxWorks RTP.
2318 proc check_effective_target_vxworks_rtp { } {
2319 return [check_no_compiler_messages vxworks_rtp assembly {
2320 #if !defined __vxworks || !defined __RTP__
2326 # Return 1 if the target is expected to provide wide character support.
2328 proc check_effective_target_wchar { } {
2329 if {[check_missing_uclibc_feature UCLIBC_HAS_WCHAR]} {
2332 return [check_no_compiler_messages wchar assembly {
2337 # Return 1 if the target has <pthread.h>.
2339 proc check_effective_target_pthread_h { } {
2340 return [check_no_compiler_messages pthread_h assembly {
2341 #include <pthread.h>
2345 # Return 1 if the target can truncate a file from a file-descriptor,
2346 # as used by libgfortran/io/unix.c:fd_truncate; i.e. ftruncate or
2347 # chsize. We test for a trivially functional truncation; no stubs.
2348 # As libgfortran uses _FILE_OFFSET_BITS 64, we do too; it'll cause a
2349 # different function to be used.
2351 proc check_effective_target_fd_truncate { } {
2353 #define _FILE_OFFSET_BITS 64
2359 FILE *f = fopen ("tst.tmp", "wb");
2361 const char t[] = "test writing more than ten characters";
2364 write (fd, t, sizeof (t) - 1);
2366 if (ftruncate (fd, 10) != 0)
2369 f = fopen ("tst.tmp", "rb");
2370 if (fread (s, 1, sizeof (s), f) != 10 || strncmp (s, t, 10) != 0)
2376 if { [check_runtime ftruncate $prog] } {
2380 regsub "ftruncate" $prog "chsize" prog
2381 return [check_runtime chsize $prog]
2384 # Add to FLAGS all the target-specific flags needed to access the c99 runtime.
2386 proc add_options_for_c99_runtime { flags } {
2387 if { [istarget *-*-solaris2*] } {
2388 return "$flags -std=c99"
2390 if { [istarget powerpc-*-darwin*] } {
2391 return "$flags -mmacosx-version-min=10.3"
2396 # Return 1 if the target provides a full C99 runtime.
2398 proc check_effective_target_c99_runtime { } {
2399 return [check_cached_effective_target c99_runtime {
2402 set file [open "$srcdir/gcc.dg/builtins-config.h"]
2403 set contents [read $file]
2406 #ifndef HAVE_C99_RUNTIME
2410 check_no_compiler_messages_nocache c99_runtime assembly \
2411 $contents [add_options_for_c99_runtime ""]
2415 # Return 1 if target wchar_t is at least 4 bytes.
2417 proc check_effective_target_4byte_wchar_t { } {
2418 return [check_no_compiler_messages 4byte_wchar_t object {
2419 int dummy[sizeof (__WCHAR_TYPE__) >= 4 ? 1 : -1];