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(canon_hash, cse_insn): MEM is not unchanging if it is in the frame (since

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the temp slot might be reused).

From-SVN: r12562
This commit is contained in:
Richard Kenner 1996-07-24 21:47:52 -04:00
parent 7c225e8805
commit 9ad91d7115
1 changed files with 4 additions and 2 deletions
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6
gcc/cse.c
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@ -1945,7 +1945,7 @@ canon_hash (x, mode)
do_not_record = 1;
return 0;
}
if (! RTX_UNCHANGING_P (x))
if (! RTX_UNCHANGING_P (x) || FIXED_BASE_PLUS_P (XEXP (x, 0)))
{
hash_arg_in_memory = 1;
if (MEM_IN_STRUCT_P (x)) hash_arg_in_struct = 1;
@ -7377,7 +7377,9 @@ cse_insn (insn, in_libcall_block)
elt = insert (dest, sets[i].src_elt,
sets[i].dest_hash, GET_MODE (dest));
elt->in_memory = (GET_CODE (sets[i].inner_dest) == MEM
&& ! RTX_UNCHANGING_P (sets[i].inner_dest));
&& (! RTX_UNCHANGING_P (sets[i].inner_dest)
|| FIXED_BASE_PLUS_P (XEXP (sets[i].inner_dest,
0))));
if (elt->in_memory)
{