2006-12-12 Manuel Lopez-Ibanez <manu@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / local-alloc.c

diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c
index c103400..e6ff69e 100644 (file)
--- a/gcc/local-alloc.c
+++ b/gcc/local-alloc.c
@@ -907,7 +907,7 @@ update_equiv_regs (void)
             REG_EQUAL note on the insn.  Since this note would be redundant,
             there's no point creating it earlier than here.  */
          if (! note && ! rtx_varies_p (src, 0))
-           note = set_unique_reg_note (insn, REG_EQUAL, src);
+           note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src));
 
          /* Don't bother considering a REG_EQUAL note containing an EXPR_LIST
             since it represents a function call */
@@ -953,7 +953,8 @@ update_equiv_regs (void)
          if (note == 0 && REG_BASIC_BLOCK (regno) >= 0
              && MEM_P (SET_SRC (set))
              && validate_equiv_mem (insn, dest, SET_SRC (set)))
-           REG_NOTES (insn) = note = gen_rtx_EXPR_LIST (REG_EQUIV, SET_SRC (set),
+           REG_NOTES (insn) = note = gen_rtx_EXPR_LIST (REG_EQUIV,
+                                                        copy_rtx (SET_SRC (set)),
                                                         REG_NOTES (insn));
 
          if (note)
@@ -1061,7 +1062,7 @@ update_equiv_regs (void)
              && ! memref_used_between_p (dest, init_insn, insn))
            {
              REG_NOTES (init_insn)
-               = gen_rtx_EXPR_LIST (REG_EQUIV, dest,
+               = gen_rtx_EXPR_LIST (REG_EQUIV, copy_rtx (dest),
                                     REG_NOTES (init_insn));
              /* This insn makes the equivalence, not the one initializing
                 the register.  */