MIPS: Fix wrong use of XINT instead of INTVAL

This issue was caught with assert checking enabled but is not a
functional bug as XINT(x, 0) happens to overlay INTVAL(x) anyway.

gcc/
	* config/mips/mips.c (mips_final_prescan_insn): Fix incorrect
	XINT with INTVAL.
	(mips_final_postscan_insn): Likewise.

From-SVN: r258099

gcc/ChangeLog

+2018-03-01  Matthew Fortune  <mfortune@gmail.com>
+
+	* config/mips/mips.c (mips_final_prescan_insn): Fix incorrect
+	XINT with INTVAL.
+	(mips_final_postscan_insn): Likewise.
+
 2018-03-01  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	PR rtl-optimization/84528

gcc/config/mips/mips.c

@@ -20426,7 +20426,7 @@ mips_final_prescan_insn (rtx_insn *insn, rtx *opvec, int noperands)
       && GET_CODE (PATTERN (insn)) == UNSPEC_VOLATILE
       && XINT (PATTERN (insn), 1) == UNSPEC_CONSTTABLE)
     mips_set_text_contents_type (asm_out_file, "__pool_",
-				 XINT (XVECEXP (PATTERN (insn), 0, 0), 0),
+				 INTVAL (XVECEXP (PATTERN (insn), 0, 0)),
 				 FALSE);
 
   if (mips_need_noat_wrapper_p (insn, opvec, noperands))
@@ -20450,7 +20450,7 @@ mips_final_postscan_insn (FILE *file ATTRIBUTE_UNUSED, rtx_insn *insn,
       && GET_CODE (PATTERN (insn)) == UNSPEC_VOLATILE
       && XINT (PATTERN (insn), 1) == UNSPEC_CONSTTABLE_END)
     mips_set_text_contents_type (asm_out_file, "__pend_",
-				 XINT (XVECEXP (PATTERN (insn), 0, 0), 0),
+				 INTVAL (XVECEXP (PATTERN (insn), 0, 0)),
 				 TRUE);
 }