re PR target/53789 (ICE in gen_reg_rtx, at emit-rtl.c:864/865 when compiling GNU MPFR on parisc)

	PR target/53789
	* config/pa/pa.md (movsi): Reject expansion of TLS symbol references
	after reload starts.

From-SVN: r194714

gcc/ChangeLog

+2012-12-25  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR target/53789
+	* config/pa/pa.md (movsi): Reject expansion of TLS symbol references
+	after reload starts.
+
 2012-12-22  Jan Hubicka  <jh@suse.cz>
 
 	PR lto/54728

gcc/config/pa/pa.md

@@ -2094,6 +2094,12 @@
   ""
   "
 {
+  /* A TLS symbol reference is not a valid move source operand.
+     pa_emit_move_sequence can only handle them prior to reload.
+     There is also no way to reload a TLS symbol reference, so
+     we must reject them after reload starts.  */
+  if (PA_SYMBOL_REF_TLS_P (operands[1]) && !can_create_pseudo_p ())
+    FAIL;
   if (pa_emit_move_sequence (operands, SImode, 0))
     DONE;
 }")