2e3f842fe6
2008-07-30 Joey Ye <joey.ye@intel.com> H.J. Lu <hongjiu.lu@intel.com> * builtins.c (expand_builtin_setjmp_receiver): Replace virtual_incoming_args_rtx with crtl->args.internal_arg_pointer. (expand_builtin_apply_args_1): Likewise. (expand_builtin_longjmp): Need DRAP for stack alignment. (expand_builtin_apply): Likewise. * caller-save.c (setup_save_areas): Call assign_stack_local_1 instead of assign_stack_local to allow alignment reduction. * calls.c (emit_call_1): Need DRAP for stack alignment if return pops. (expand_call): Replace virtual_incoming_args_rtx with crtl->args.internal_arg_pointer. * stmt.c (expand_nl_goto_receiver): Likewise. * cfgexpand.c (get_decl_align_unit): Estimate stack variable alignment and store to stack_alignment_estimated and max_used_stack_slot_alignment. (expand_one_var): Likewise. (expand_stack_alignment): New function. (tree_expand_cfg): Initialize max_used_stack_slot_alignment and stack_alignment_estimated fields in rtl_data. Call expand_stack_alignment at end. * defaults.h (INCOMING_STACK_BOUNDARY): New. (MAX_STACK_ALIGNMENT): Likewise. (MAX_SUPPORTED_STACK_ALIGNMENT): Likewise. (SUPPORTS_STACK_ALIGNMENT): Likewise. * emit-rtl.c (gen_reg_rtx): Estimate stack alignment for stack alignment when generating virtual registers. * function.c (assign_stack_local): Renamed to ... (assign_stack_local_1): This. Add a parameter to indicate if it is OK to reduce alignment. (assign_stack_local): Use it. (instantiate_new_reg): Instantiate virtual incoming args rtx to vDRAP if stack realignment and DRAP is needed. (assign_parms): Collect parameter/return type alignment and contribute to stack_alignment_estimated. (locate_and_pad_parm): Likewise. (get_arg_pointer_save_area): Replace virtual_incoming_args_rtx with crtl->args.internal_arg_pointer. * function.h (rtl_data): Add new field drap_reg, max_used_stack_slot_alignment, stack_alignment_estimated, stack_realign_needed, need_drap, stack_realign_processed and stack_realign_finalized. (stack_realign_fp): New macro. (stack_realign_drap): Likewise. * global.c (compute_regsets): Frame pointer is needed when stack is realigned. Can eliminate frame pointer when stack is realigned and dynamic realigned argument pointer isn't used. * reload1.c (update_eliminables): Frame pointer is needed when stack is realigned. (init_elim_table): Can eliminate frame pointer when stack is realigned and dynamic realigned argument pointer isn't used. * rtl.h (assign_stack_local_1): Declare new funtion. * target-def.h (TARGET_UPDATE_STACK_BOUNDARY): New. (TARGET_GET_DRAP_RTX): Likewise. (TARGET_CALLS): Add TARGET_UPDATE_STACK_BOUNDARY and TARGET_GET_DRAP_RTX. * target.h (gcc_target): Add update_stack_boundary and get_drap_rtx. * tree-vectorizer.c (vect_can_force_dr_alignment_p): Replace STACK_BOUNDARY with MAX_STACK_ALIGNMENT. 2008-07-30 Xuepeng Guo <xuepeng.guo@intel.com> H.J. Lu <hongjiu.lu@intel.com> * dwarf2out.c (dw_fde_struct): Add stack_realignment, drap_reg, vdrap_reg, stack_realign and drap_reg_saved. (add_cfi): Don't allow redefining CFA when DRAP is used. (reg_save): Handle stack alignment. (dwarf2out_frame_debug_expr): Add rules 16-20 to handle stack alignment. Don't generate DWARF information for (set fp sp) when DRAP is used. (dwarf2out_begin_prologue): Initialize drap_reg and vdrap_reg to INVALID_REGNUM. (int_loc_descriptor): Move prototype forward. Also define if DWARF2_UNWIND_INFO is true. (output_cfa_loc): Handle DW_CFA_expression. (build_cfa_aligned_loc): New. (based_loc_descr): Update assert for stack realign. For local variables, use sp+offset when stack is aligned without drap and fp+offset when stack is aligned with drap. For arguments, use cfa+offset when drap is used to align stack. 2008-07-30 Joey Ye <joey.ye@intel.com> H.J. Lu <hongjiu.lu@intel.com> * config/i386/i386.c (ix86_force_align_arg_pointer_string): Break long line. (ix86_gen_andsp): New. (ix86_user_incoming_stack_boundary): Likewise. (ix86_default_incoming_stack_boundary): Likewise. (ix86_incoming_stack_boundary): Likewise. (ix86_can_eliminate): Likewise. (find_drap_reg): Likewise. (ix86_update_stack_boundary): Likewise. (ix86_get_drap_rtx): Likewise. (ix86_finalize_stack_realign_flags): Likewise. (TARGET_UPDATE_STACK_BOUNDARY): Likewise. (TARGET_GET_DRAP_RTX): Likewise. (override_options): Overide option value for new options. (ix86_function_ok_for_sibcall): Remove check for force_align_arg_pointer. (ix86_handle_cconv_attribute): Likewise. (ix86_function_regparm): Likewise. (setup_incoming_varargs_64): Don't set stack_alignment_needed here. (ix86_va_start): Replace virtual_incoming_args_rtx with crtl->args.internal_arg_pointer. (ix86_select_alt_pic_regnum): Check DRAP register. (ix86_save_reg): Replace force_align_arg_pointer with drap_reg. (ix86_compute_frame_layout): Compute frame layout wrt stack realignment. (ix86_internal_arg_pointer): Just return virtual_incoming_args_rtx. (ix86_expand_prologue): Decide if stack realignment is needed and generate prologue code accordingly. (ix86_expand_epilogue): Generate epilogue code wrt stack realignment is really needed or not. * config/i386/i386.h (MAIN_STACK_BOUNDARY): New. (ABI_STACK_BOUNDARY): Likewise. (PREFERRED_STACK_BOUNDARY_DEFAULT): Likewise. (STACK_REALIGN_DEFAULT): Likewise. (INCOMING_STACK_BOUNDARY): Likewise. (MAX_STACK_ALIGNMENT): Likewise. (ix86_incoming_stack_boundary): Likewise. (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): Removed. (REAL_PIC_OFFSET_TABLE_REGNUM): Updated to use BX_REG. (CAN_ELIMINATE): Defined with ix86_can_eliminate. (machine_function): Remove force_align_arg_pointer. * config/i386/i386.md (BX_REG): New. (R13_REG): Likewise. * config/i386/i386.opt (mforce_drap): New. (mincoming-stack-boundary): Likewise. (mstackrealign): Add Init(-1). * config/i386/i386-protos.h (ix86_can_eliminate): New 2008-07-30 H.J. Lu <hongjiu.lu@intel.com> * doc/extend.texi: Update force_align_arg_pointer. * doc/invoke.texi: Document -mincoming-stack-boundary. Update -mstackrealign. * doc/tm.texi (MAX_STACK_ALIGNMENT): Add macro. (INCOMING_STACK_BOUNDARY): Likewise. (TARGET_UPDATE_STACK_BOUNDARY): New target hook. (TARGET_GET_DRAP_RTX): Likewise. From-SVN: r138335 |
||
|---|---|---|
| boehm-gc | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgomp | ||
| libiberty | ||
| libjava | ||
| libmudflap | ||
| libobjc | ||
| libssp | ||
| libstdc++-v3 | ||
| maintainer-scripts | ||
| zlib | ||
| ABOUT-NLS | ||
| ChangeLog | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
| libtool.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
| mkinstalldirs | ||
| move-if-change | ||
| README | ||
| README.SCO | ||
| symlink-tree | ||
| ylwrap | ||
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the file COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs.html for how to report bugs usefully.