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* [gcc r12-8240] target/89125 - BSD and math functions
@ 2022-04-25 7:26 Richard Biener
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From: Richard Biener @ 2022-04-25 7:26 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:b6e22db8564827c82108e0b7fa1a84675379c12b
commit r12-8240-gb6e22db8564827c82108e0b7fa1a84675379c12b
Author: Steve Kargl <kargl@gcc.gnu.org>
Date: Mon Apr 25 09:23:56 2022 +0200
target/89125 - BSD and math functions
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).
2022-04-15 Steven G. Kargl <kargl@gcc.gnu.org>
PR target/89125
* config/freebsd.h: Define TARGET_LIBC_HAS_FUNCTION to be
bsd_libc_has_function.
* targhooks.cc (bsd_libc_has_function): New function.
Expand the supported math functions to inclue C99 libm.
* targhooks.h (bsd_libc_has_function): New Prototype.
Diff:
---
gcc/config/freebsd.h | 2 +-
gcc/targhooks.cc | 14 ++++++++++++++
gcc/targhooks.h | 1 +
3 files changed, 16 insertions(+), 1 deletion(-)
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..399d6f874dc 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);
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