===================================================================
@@ -302,3 +302,17 @@ along with GCC; see the file COPYING3.
#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)
#define SUBTARGET32_DEFAULT_CPU "i686"
+
+#define SUBTARGET_INIT_BUILTINS \
+do { \
+ darwin_rename_builtins (); \
+} while(0)
+
+/* The system ___divdc3 routine in libSystem on darwin10 is not
+ accurate to 1ulp, ours is, so we avoid ever using the system name
+ for this routine and instead install a non-conflicting name that is
+ accurate. See darwin_rename_builtins. */
+#ifdef L_divdc3
+#define DECLARE_LIBRARY_RENAMES \
+ asm(".text; ___divdc3: jmp ___ieee_divdc3 ; .globl ___divdc3");
+#endif
===================================================================
@@ -30612,6 +30612,11 @@ ix86_enum_va_list (int idx, const char *
#undef TARGET_ASM_CODE_END
#define TARGET_ASM_CODE_END ix86_code_end
+#if TARGET_MACHO
+#undef TARGET_INIT_LIBFUNCS
+#define TARGET_INIT_LIBFUNCS darwin_rename_builtins
+#endif
+
struct gcc_target targetm = TARGET_INITIALIZER;
#include "gt-i386.h"
===================================================================
@@ -93,3 +93,4 @@ extern void darwin_asm_output_anchor (rt
extern bool darwin_kextabi_p (void);
extern void darwin_override_options (void);
extern void darwin_patch_builtins (void);
+extern void darwin_rename_builtins (void);
===================================================================
@@ -337,6 +337,34 @@ static GTY ((param_is (struct machopic_i
/* Return a hash value for a SLOT in the indirections hash table. */
+void
+darwin_rename_builtins (void)
+{
+ /* The system ___divdc3 routine in libSystem on darwin10 is not
+ accurate to 1ulp, ours is, so we avoid ever using the system name
+ for this routine and instead install a non-conflicting name that
+ is accurate.
+
+ When -ffast-math or -funsafe-math-optimizations is given, we can
+ use the faster version. */
+ if (!flag_unsafe_math_optimizations)
+ {
+ int dcode = (BUILT_IN_COMPLEX_DIV_MIN
+ + DCmode - MIN_MODE_COMPLEX_FLOAT);
+ tree fn = built_in_decls[dcode];
+ /* Fortran and c call TARGET_INIT_BUILTINS and
+ TARGET_INIT_LIBFUNCS at different times, so we have to put a
+ call into each to ensure that at least one of them is called
+ after build_common_builtin_nodes. A better fix is to add a
+ new hook to run after build_common_builtin_nodes runs. */
+ if (fn)
+ set_user_assembler_name (fn, "___ieee_divdc3");
+ fn = implicit_built_in_decls[dcode];
+ if (fn)
+ set_user_assembler_name (fn, "___ieee_divdc3");
+ }
+}
+
static hashval_t
machopic_indirection_hash (const void *slot)
{
Currently gcc 4.5.2 and gcc-4_5-branch fails... FAIL: gcc.dg/torture/builtin-math-7.c -O0 execution test FAIL: gcc.dg/torture/builtin-math-7.c -O1 execution test FAIL: gcc.dg/torture/builtin-math-7.c -O2 execution test FAIL: gcc.dg/torture/builtin-math-7.c -O3 -fomit-frame-pointer execution test FAIL: gcc.dg/torture/builtin-math-7.c -O3 -fomit-frame-pointer -funroll-loops execution test FAIL: gcc.dg/torture/builtin-math-7.c -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions execution test FAIL: gcc.dg/torture/builtin-math-7.c -O3 -g execution test FAIL: gcc.dg/torture/builtin-math-7.c -Os execution test FAIL: gcc.dg/torture/builtin-math-7.c -O2 -flto execution test FAIL: gcc.dg/torture/builtin-math-7.c -O2 -fwhopr execution test at -m32 and -m64 on i386-apple-darwin10 and x86_64-apple-darwin10 due to PR42333. The attached patch backports r169902 from gcc trunk to provide alternate __ieee_divdc3 entry point to access the FSF gcc ___divdc3 instead of the lazy implementation in darwin10's libSystem. Bootstrap and regression tested on x86_64-apple-darwin10. Okay for gcc-4_5-branch? Jack 2011-02-14 Jack Howarth <howarth@bromo.med.uc.edu> Backport from mainline 2011-02-07 Mike Stump <mikestump@comcast.net> PR target/42333 Add __ieee_divdc3 entry point. * config/i386/darwin.h (DECLARE_LIBRARY_RENAMES): Retain ___divdc3 entry point. (SUBTARGET_INIT_BUILTINS): Call darwin_rename_builtins. * config/i386/i386.c (TARGET_INIT_LIBFUNCS): Likewise. * config/darwin.c (darwin_rename_builtins): Add. * config/darwin-protos.h (darwin_rename_builtins): Add.