Can someone, anyone, please commit the attach patch, which is
also attached to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
where one can read the audit trail. The original patch was
submitted 2 years ago, and required manual intervention due to
the recent *.c to *.cc rename.
Back story: When GCC is configured and built on non-glibc platforms,
it seems very little to no effort is made to enumerate the available
C99 libm functions. It is all or nothing for C99 libm. The patch
introduces a new function, used on only FreeBSD, to inform gcc that
it has C99 libm functions (minus a few which clearly GCC does not check
nor test).
The patch introduces no regression on x86_64-*-freebsd while
allowing an additional 31 new passes.
=== gcc Summary ===
w/o patch w patch
# of expected passes 175405 175434
# of unexpected failures 1081 1051
# of unexpected successes 20 20
# of expected failures 1459 1459
# of unresolved testcases 10 10
# of unsupported tests 3252 3252
=== g++ Summary ===
w/o patch w patch
# of expected passes 225338 225341
# of unexpected failures 678 676
# of expected failures 2071 2071
# of unresolved testcases 11 11
# of unsupported tests 10353 10353
=== gfortran Summary ===
w/o patch w patch
# of expected passes 65901 65901
# of unexpected failures 12 12
# of expected failures 272 272
# of unsupported tests 100 100
2022-04-15 Steven G. Kargl <ka...@gcc.gnu.org>
PR target/89125
* config/freebsd.h: Define TARGET_LIBC_HAS_FUNCTION to be
bsd_libc_has_function.
* gcc/targhooks.cc(bsd_libc_has_function): New function.
Expand the supported math functions to inclue C99 libm.
* gcc/targhooks.h: Prototype for bsd_libc_has_function.
--
Steve
diff --git a/gcc/config/freebsd.h b/gcc/config/freebsd.h
index 28ebcad88d4..d89ee7dfc97 100644
--- a/gcc/config/freebsd.h
+++ b/gcc/config/freebsd.h
@@ -55,7 +55,7 @@ along with GCC; see the file COPYING3. If not see
#endif
#undef TARGET_LIBC_HAS_FUNCTION
-#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
+#define TARGET_LIBC_HAS_FUNCTION bsd_libc_has_function
/* Use --as-needed -lgcc_s for eh support. */
#ifdef HAVE_LD_AS_NEEDED
diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc
index e22bc66a6c8..ff127763cf2 100644
--- a/gcc/targhooks.cc
+++ b/gcc/targhooks.cc
@@ -1843,6 +1843,20 @@ no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED,
return false;
}
+/* Assume some c99 functions are present at the runtime including sincos. */
+bool
+bsd_libc_has_function (enum function_class fn_class,
+ tree type ATTRIBUTE_UNUSED)
+{
+ if (fn_class == function_c94
+ || fn_class == function_c99_misc
+ || fn_class == function_sincos)
+ return true;
+
+ return false;
+}
+
+
tree
default_builtin_tm_load_store (tree ARG_UNUSED (type))
{
diff --git a/gcc/targhooks.h b/gcc/targhooks.h
index ecfa11287ef..ecce55ebe79 100644
--- a/gcc/targhooks.h
+++ b/gcc/targhooks.h
@@ -212,6 +212,7 @@ extern bool default_libc_has_function (enum function_class, tree);
extern bool default_libc_has_fast_function (int fcode);
extern bool no_c99_libc_has_function (enum function_class, tree);
extern bool gnu_libc_has_function (enum function_class, tree);
+extern bool bsd_libc_has_function (enum function_class, tree);
extern tree default_builtin_tm_load_store (tree);
