Silence bogus used uninitialized warnings of second stage of profiledbootstrap

[Jan Hubicka]

Hi,
this makes stage-feedback to build (-finline-functions cause quite few
used uninitialized warnings, as usually).

Bootstrapped/retested i686-linux, comitted.

Next problem is DF compilation time explosion compiling libcpp with
profile feedback and later misoptimization of genmodes at stage-profile.

Honza

	* see.c (see_merge_one_def_extension): Silence used uninitialized warning.
	* matrix-reorg.c (check_allocation_function): Likewise.
	* config/i386/driver-i386.c (detect_caches_amd): Likewise.
	
	* parse.c (parse_interface): Likewise.
Index: see.c
===================================================================
*** see.c	(revision 139772)
--- see.c	(working copy)
*************** see_merge_one_def_extension (void **slot
*** 2809,2815 ****
    enum rtx_code code;
    enum rtx_code extension_code;
    enum machine_mode source_extension_mode;
!   enum machine_mode source_mode;
    enum machine_mode dest_extension_mode;
    bool merge_success = false;
    int i;
--- 2809,2815 ----
    enum rtx_code code;
    enum rtx_code extension_code;
    enum machine_mode source_extension_mode;
!   enum machine_mode source_mode = VOIDmode;
    enum machine_mode dest_extension_mode;
    bool merge_success = false;
    int i;
Index: matrix-reorg.c
===================================================================
*** matrix-reorg.c	(revision 139772)
--- matrix-reorg.c	(working copy)
*************** check_allocation_function (void **slot, 
*** 1601,1607 ****
      {
        gimple call_stmt;
        tree size;
!       struct malloc_call_data mcd;
  
        call_stmt = mi->malloc_for_level[level];
  
--- 1601,1607 ----
      {
        gimple call_stmt;
        tree size;
!       struct malloc_call_data mcd = {NULL, NULL_TREE, NULL_TREE};
  
        call_stmt = mi->malloc_for_level[level];
  
Index: fortran/parse.c
===================================================================
*** fortran/parse.c	(revision 139772)
--- fortran/parse.c	(working copy)
*************** static gfc_statement parse_spec (gfc_sta
*** 2064,2070 ****
  static void
  parse_interface (void)
  {
!   gfc_compile_state new_state, current_state;
    gfc_symbol *prog_unit, *sym;
    gfc_interface_info save;
    gfc_state_data s1, s2;
--- 2064,2070 ----
  static void
  parse_interface (void)
  {
!   gfc_compile_state new_state = COMP_NONE, current_state;
    gfc_symbol *prog_unit, *sym;
    gfc_interface_info save;
    gfc_state_data s1, s2;
Index: config/i386/driver-i386.c
===================================================================
*** config/i386/driver-i386.c	(revision 139772)
--- config/i386/driver-i386.c	(working copy)
*************** detect_caches_amd (unsigned max_ext_leve
*** 75,81 ****
  {
    unsigned eax, ebx, ecx, edx;
    unsigned l1_sizekb, l1_line, l1_assoc;
!   unsigned l2_sizekb, l2_line, l2_assoc;
  
    if (max_ext_level < 0x80000005)
      return "";
--- 75,81 ----
  {
    unsigned eax, ebx, ecx, edx;
    unsigned l1_sizekb, l1_line, l1_assoc;
!   unsigned l2_sizekb = 0, l2_line = 0, l2_assoc = 0;
  
    if (max_ext_level < 0x80000005)
      return "";