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comparison gcc/dse.c @ 63:b7f97abdc517 gcc-4.6-20100522

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update gcc from gcc-4.5.0 to gcc-4.6
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Mon, 24 May 2010 12:47:05 +0900
parents 77e2b8dfacca
children f6334be47118
comparison
equal deleted inserted replaced
56:3c8a44c06a95 63:b7f97abdc517
1 /* RTL dead store elimination. 1 /* RTL dead store elimination.
2 Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. 2 Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
3 4
4 Contributed by Richard Sandiford <rsandifor@codesourcery.com> 5 Contributed by Richard Sandiford <rsandifor@codesourcery.com>
5 and Kenneth Zadeck <zadeck@naturalbridge.com> 6 and Kenneth Zadeck <zadeck@naturalbridge.com>
6 7
7 This file is part of GCC. 8 This file is part of GCC.
1013 static bool 1014 static bool
1014 const_or_frame_p (rtx x) 1015 const_or_frame_p (rtx x)
1015 { 1016 {
1016 switch (GET_CODE (x)) 1017 switch (GET_CODE (x))
1017 { 1018 {
1018 case MEM:
1019 return MEM_READONLY_P (x);
1020
1021 case CONST: 1019 case CONST:
1022 case CONST_INT: 1020 case CONST_INT:
1023 case CONST_DOUBLE: 1021 case CONST_DOUBLE:
1024 case CONST_VECTOR: 1022 case CONST_VECTOR:
1025 case SYMBOL_REF: 1023 case SYMBOL_REF:
1197 if (dump_file) 1195 if (dump_file)
1198 fprintf (dump_file, " no cselib val - should be a wild read.\n"); 1196 fprintf (dump_file, " no cselib val - should be a wild read.\n");
1199 return false; 1197 return false;
1200 } 1198 }
1201 if (dump_file) 1199 if (dump_file)
1202 fprintf (dump_file, " varying cselib base=%d offset = %d\n", 1200 fprintf (dump_file, " varying cselib base=%u:%u offset = %d\n",
1203 (*base)->value, (int)*offset); 1201 (*base)->uid, (*base)->hash, (int)*offset);
1204 return true; 1202 return true;
1205 } 1203 }
1206 1204
1207 1205
1208 /* Clear the rhs field from the active_local_stores array. */ 1206 /* Clear the rhs field from the active_local_stores array. */
2617 dse_step1 (void) 2615 dse_step1 (void)
2618 { 2616 {
2619 basic_block bb; 2617 basic_block bb;
2620 bitmap regs_live = BITMAP_ALLOC (NULL); 2618 bitmap regs_live = BITMAP_ALLOC (NULL);
2621 2619
2622 cselib_init (false); 2620 cselib_init (0);
2623 all_blocks = BITMAP_ALLOC (NULL); 2621 all_blocks = BITMAP_ALLOC (NULL);
2624 bitmap_set_bit (all_blocks, ENTRY_BLOCK); 2622 bitmap_set_bit (all_blocks, ENTRY_BLOCK);
2625 bitmap_set_bit (all_blocks, EXIT_BLOCK); 2623 bitmap_set_bit (all_blocks, EXIT_BLOCK);
2626 2624
2627 FOR_ALL_BB (bb) 2625 FOR_ALL_BB (bb)