re PR target/31975 (segfault in try_split on mips during bootstrap)

	PR gcc/31975
	* config/mips/mips.c (mips_output_mi_thunk): Emit
	NOTE_INSN_PROLOGUE_END at beginning of the thunk.

From-SVN: r125178

gcc/ChangeLog

+2007-05-29  David Daney  <ddaney@avtrex.com
+
+	PR gcc/31975
+	* config/mips/mips.c (mips_output_mi_thunk): Emit
+	NOTE_INSN_PROLOGUE_END at beginning of the thunk.
+
 2007-05-29  Hui-May Chang  <hm.chang@apple.com>
 	* config/i386/i386.c (ix86_function_regparm): Added checking of 
 	ix86_force_align_arg_pointer to determine the number of

gcc/config/mips/mips.c

@@ -7325,6 +7325,9 @@ mips_output_mi_thunk (FILE *file, tree thunk_fndecl ATTRIBUTE_UNUSED,
   no_new_pseudos = 1;
   reload_completed = 1;
 
+  /* Mark the end of the (empty) prologue.  */
+  emit_note (NOTE_INSN_PROLOGUE_END);
+
   /* Pick a global pointer.  Use a call-clobbered register if
      TARGET_CALL_SAVED_GP, so that we can use a sibcall.  */
   if (TARGET_USE_GOT)