2014-05-07 Richard Biener <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / alias.c

diff --git a/gcc/alias.c b/gcc/alias.c
index f20716d..7a56cda 100644 (file)
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -2810,16 +2810,13 @@ init_alias_analysis (void)
       /* Wipe the reg_seen array clean.  */
       memset (reg_seen, 0, maxreg);
 
-      /* Mark all hard registers which may contain an address.
-        The stack, frame and argument pointers may contain an address.
-        An argument register which can hold a Pmode value may contain
-        an address even if it is not in BASE_REGS.
-
-        The address expression is VOIDmode for an argument and
-        Pmode for other registers.  */
-
-      memcpy (new_reg_base_value, static_reg_base_value,
-             FIRST_PSEUDO_REGISTER * sizeof (rtx));
+      /* Initialize the alias information for this pass.  */
+      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
+       if (static_reg_base_value[i])
+         {
+           new_reg_base_value[i] = static_reg_base_value[i];
+           reg_seen[i] = 1;
+         }
 
       /* Walk the insns adding values to the new_reg_base_value array.  */
       for (insn = get_insns (); insn; insn = NEXT_INSN (insn))