[backport gcc-4.9/trunk r201454 <mikpe@it.uu.se>]

gcc/

2013-08-02  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/58048
	* lra-constraints.c (process_alt_operands): Don't check asm
	operand on register.

gcc/testsuite/

2013-08-02  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/58048
	* gcc.target/i386/pr58048.c: New.

--- gcc-4.8.1/gcc/lra-constraints.c.~1~	2013-05-02 21:16:29.000000000 +0200
+++ gcc-4.8.1/gcc/lra-constraints.c	2013-08-03 11:59:18.009826860 +0200
@@ -1871,7 +1871,7 @@ process_alt_operands (int only_alternati
 
 	      /* For asms, verify that the class for this alternative is possible
 		 for the mode that is specified.  */
-	      if (!no_regs_p && REG_P (op) && INSN_CODE (curr_insn) < 0)
+	      if (!no_regs_p && INSN_CODE (curr_insn) < 0)
 		{
 		  int i;
 		  for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
--- gcc-4.8.1/gcc/testsuite/gcc.target/i386/pr58048.c.~1~	1970-01-01 01:00:00.000000000 +0100
+++ gcc-4.8.1/gcc/testsuite/gcc.target/i386/pr58048.c	2013-08-03 11:59:17.999826870 +0200
@@ -0,0 +1,11 @@
+/* PR target/58048 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void
+div3 (void)
+{
+    double tmp1;
+
+    asm volatile ("fscale":"=t" (tmp1):"0" (0), "u" (0)); /* { dg-error "inconsistent operand constraints in an 'asm'"  } */
+}