[Xtensa] avoid extra entries in literal tables

[Xtensa] avoid extra entries in literal tables

[Bob Wilson]

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The Xtensa literal tables (e.g., .xt.lit sections) are not relevant for 
"absolute-mode" literals (e.g., in .lit4 sections), but in some cases, literal 
table entries were being generated for them anyway.  This patch changes GAS so 
that the "is_literal" flag is only set by the mark_literal_frags() function. 
Tested with an xtensa-elf target and committed on the mainline and 2.17 branch.

2006-04-25  Bob Wilson  <bob.wilson@acm.org>

	* config/tc-xtensa.c (xtensa_create_literal_symbol,
	xg_assemble_literal, xg_assemble_literal_space): Do not set the
	frag's is_literal flag.

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Index: config/tc-xtensa.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-xtensa.c,v
retrieving revision 1.64
diff -u -p -r1.64 tc-xtensa.c
--- config/tc-xtensa.c	23 Apr 2006 22:12:43 -0000	1.64
+++ config/tc-xtensa.c	25 Apr 2006 15:49:51 -0000
@@ -3980,7 +3980,6 @@ xtensa_create_literal_symbol (segT sec, 
 
   xtensa_add_literal_sym (symbolP);
 
-  frag->tc_frag_data.is_literal = TRUE;
   lit_num++;
   return symbolP;
 }
@@ -4046,7 +4045,6 @@ xg_assemble_literal (/* const */ TInsn *
   frag_now->tc_frag_data.literal_frag = get_literal_pool_location (now_seg);
   frag_now->fr_symbol = xtensa_create_literal_symbol (now_seg, frag_now);
   lit_sym = frag_now->fr_symbol;
-  frag_now->tc_frag_data.is_literal = TRUE;
 
   /* Go back.  */
   xtensa_restore_emit_state (&state);
@@ -4075,7 +4073,6 @@ xg_assemble_literal_space (/* const */ i
 
   lit_saved_frag = frag_now;
   frag_now->tc_frag_data.literal_frag = get_literal_pool_location (now_seg);
-  frag_now->tc_frag_data.is_literal = TRUE;
   frag_now->fr_symbol = xtensa_create_literal_symbol (now_seg, frag_now);
   xg_finish_frag (0, RELAX_LITERAL, 0, size, FALSE);
 
@@ -4230,7 +4227,6 @@ xg_resolve_labels (TInsn *insn, symbolS 
 {
   symbolS *sym = get_special_label_symbol ();
   int i;
-  /* assert (!insn->is_literal); */
   for (i = 0; i < insn->ntok; i++)
     if (insn->tok[i].X_add_symbol == sym)
       insn->tok[i].X_add_symbol = label_sym;