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On Tue, Jun 10, 2008 at 2:42 PM, H.J. Lu <hjl.tools@gmail.com> wrote: > Hi Jan, > > Here is the stack alignment change for x86 backend. Ok for trunk > if the middle end changes are approved? > Here is the patch. Thanks. -- H.J. --- 2008-06-10 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
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gcc-stack-v5-4.txt
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