+2010-08-15 Uros Bizjak <ubizjak@gmail.com>
+
+ * doc/invoke.texi (-fomit-frame-pointer): Document that starting
+ with GCC version 4.6, the default setting (when not optimizing
+ for size) for 32-bit Linux x86 and 32-bit Darwin x86 targets has
+ been changed to -fomit-frame-pointer.
+
2010-08-15 Iain Sandoe <iains@gcc.gnu.org>
- * config/darwin.h (REAL_LIBGCC_SPEC): Remove libgcc_s.10.5 stub for
+ * config/darwin.h (REAL_LIBGCC_SPEC): Remove libgcc_s.10.5 stub for
Darwin10. Do not link libgcc.a for Darwin >= 9.
2010-08-15 Gerald Pfeifer <gerald@pfeifer.com>
* tree-vect-data-refs.c (vect_setup_realignment): Support realignment
in basic blocks.
(vect_supportable_dr_alignment): Check alignment for basic blocks.
- * tree-vect-slp.c (vect_build_slp_tree): Allow different codes for
+ * tree-vect-slp.c (vect_build_slp_tree): Allow different codes for
data references.
(vect_bb_vectorization_profitable_p): New function.
(vect_slp_analyze_bb): Call vect_bb_vectorization_profitable_p() to
enum reg_class to reg_class_t. Change type of saved_flags to
reg_class_t.
- * config/mips/mips.h (REGISTER_MOVE_COST, MEMORY_MOVE_COST):
+ * config/mips/mips.h (REGISTER_MOVE_COST, MEMORY_MOVE_COST):
Remove macros.
(mips_cost): Remove.
(struct mips_rtx_cost_data): Moved to mips.c.
2010-08-13 Jie Zhang <jie@codesourcery.com>
- * config/arm/arm.md (cstoredf4): Only valid when
- !TARGET_VFP_SINGLE.
+ * config/arm/arm.md (cstoredf4): Only valid when !TARGET_VFP_SINGLE.
2010-08-12 Joseph Myers <joseph@codesourcery.com>
2010-08-12 Jakub Jelinek <jakub@redhat.com>
- * builtins.c (fold_builtin_memory_op): Avoid -Wsign-compare
- warning.
+ * builtins.c (fold_builtin_memory_op): Avoid -Wsign-compare warning.
PR middle-end/45262
* fold-const.c (make_range) <case NEGATE_EXPR>: Punt if
(walk_mems_1): Moved from alias.c.
(insns_may_alias_p): New function, originally insn_alias_sets_conflict_p
in alias.c.
- (add_inter_loop_mem_dep): Use insns_may_alias_p now.
- * cse.c (cse_insn): New argument in calling nonoverlapping_memrefs_p.
- * alias.c (walk_mems_2): Moved to ddg.c.
+ (add_inter_loop_mem_dep): Use insns_may_alias_p now.
+ * cse.c (cse_insn): New argument in calling nonoverlapping_memrefs_p.
+ * alias.c (walk_mems_2): Moved to ddg.c.
(walk_mems_1): Ditto.
(insn_alias_sets_conflict_p): Renamed to insns_may_alias_p and moved
to ddg.c.
whether a target machine supports this flag. @xref{Registers,,Register
Usage, gccint, GNU Compiler Collection (GCC) Internals}.
+Starting with GCC version 4.6, the default setting (when not optimizing for
+size) for 32-bit Linux x86 and 32-bit Darwin x86 targets has been changed to
+@option{-fomit-frame-pointer}. The default can be reverted to
+@option{-fno-omit-frame-pointer} by configuring GCC with the
+@option{--enable-frame-pointer} configure option.
+
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
@item -foptimize-sibling-calls