-2014-07-14 Jan Hubicka <hubicka@ucw.cz>
+2014-07-15 Uros Bizjak <ubizjak@gmail.com>
+
+ * config/alpha/alpha.c (alpha_atomic_assign_expand_fenv): New.
+ (TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New define.
+
+2014-07-15 Jan Hubicka <hubicka@ucw.cz>
* fold-const.c (fold_checksum_tree): Fix typo in previous patch.
2014-07-15 Michael Matz <matz@suse.de>
PR rtl-optimization/61772
- * ifcvt.c (dead_or_predicable): Check jump to be free of side
- effects.
+ * ifcvt.c (dead_or_predicable): Check jump to be free of side effects.
2014-07-15 Richard Biener <rguenther@suse.de>
2014-07-14 Jan Hubicka <hubicka@ucw.cz>
- * fold-const.c (fold_checksum_tree): Move checking of
- DECL_RESULT.
+ * fold-const.c (fold_checksum_tree): Move checking of DECL_RESULT.
2014-07-14 Jan Hubicka <hubicka@ucw.cz>
(TV_IPA_LTO_CTORS_IN, TV_IPA_LTO_CTORS_OUT): New timevar.
* cgraph.c (cgraph_get_body): Push GIMPLE_IN timevar.
(varpool_get_constructor): Push CTORS_IN timevar.
- * lto-streamer-out.c (lto_output): Push TV_IPA_LTO_CTORS_OUT
- timevar.
+ * lto-streamer-out.c (lto_output): Push TV_IPA_LTO_CTORS_OUT timevar.
2014-07-12 Uros Bizjak <ubizjak@gmail.com>
*op1 = GEN_INT (255);
}
}
+
+/* Implement TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */
+
+static void
+alpha_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
+{
+ const unsigned HOST_WIDE_INT SWCR_STATUS_MASK = (0x3fUL << 17);
+
+ tree fenv_var, get_fpscr, set_fpscr, mask, ld_fenv, masked_fenv;
+ tree new_fenv_var, reload_fenv, restore_fnenv;
+ tree update_call, atomic_feraiseexcept, hold_fnclex;
+
+ /* Assume OSF/1 compatible interfaces. */
+ if (!TARGET_ABI_OSF)
+ return;
+
+ /* Generate the equivalent of :
+ unsigned long fenv_var;
+ fenv_var = __ieee_get_fp_control ();
+
+ unsigned long masked_fenv;
+ masked_fenv = fenv_var & mask;
+
+ __ieee_set_fp_control (masked_fenv); */
+
+ fenv_var = create_tmp_var (long_unsigned_type_node, NULL);
+ get_fpscr
+ = build_fn_decl ("__ieee_get_fp_control",
+ build_function_type_list (long_unsigned_type_node, NULL));
+ set_fpscr
+ = build_fn_decl ("__ieee_set_fp_control",
+ build_function_type_list (void_type_node, NULL));
+ mask = build_int_cst (long_unsigned_type_node, ~SWCR_STATUS_MASK);
+ ld_fenv = build2 (MODIFY_EXPR, long_unsigned_type_node,
+ fenv_var, build_call_expr (get_fpscr, 0));
+ masked_fenv = build2 (BIT_AND_EXPR, long_unsigned_type_node, fenv_var, mask);
+ hold_fnclex = build_call_expr (set_fpscr, 1, masked_fenv);
+ *hold = build2 (COMPOUND_EXPR, void_type_node,
+ build2 (COMPOUND_EXPR, void_type_node, masked_fenv, ld_fenv),
+ hold_fnclex);
+
+ /* Store the value of masked_fenv to clear the exceptions:
+ __ieee_set_fp_control (masked_fenv); */
+
+ *clear = build_call_expr (set_fpscr, 1, masked_fenv);
+
+ /* Generate the equivalent of :
+ unsigned long new_fenv_var;
+ new_fenv_var = __ieee_get_fp_control ();
+
+ __ieee_set_fp_control (fenv_var);
+
+ __atomic_feraiseexcept (new_fenv_var); */
+
+ new_fenv_var = create_tmp_var (long_unsigned_type_node, NULL);
+ reload_fenv = build2 (MODIFY_EXPR, long_unsigned_type_node, new_fenv_var,
+ build_call_expr (get_fpscr, 0));
+ restore_fnenv = build_call_expr (set_fpscr, 1, fenv_var);
+ atomic_feraiseexcept = builtin_decl_implicit (BUILT_IN_ATOMIC_FERAISEEXCEPT);
+ update_call
+ = build_call_expr (atomic_feraiseexcept, 1,
+ fold_convert (integer_type_node, new_fenv_var));
+ *update = build2 (COMPOUND_EXPR, void_type_node,
+ build2 (COMPOUND_EXPR, void_type_node,
+ reload_fenv, restore_fnenv), update_call);
+}
\f
/* Initialize the GCC target structure. */
#if TARGET_ABI_OPEN_VMS
#undef TARGET_CANONICALIZE_COMPARISON
#define TARGET_CANONICALIZE_COMPARISON alpha_canonicalize_comparison
+#undef TARGET_ATOMIC_ASSIGN_EXPAND_FENV
+#define TARGET_ATOMIC_ASSIGN_EXPAND_FENV alpha_atomic_assign_expand_fenv
+
struct gcc_target targetm = TARGET_INITIALIZER;
\f