re PR target/82444 (ICE in ira_init_register_move_cost, at ira.c:1581)

2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/82444
	* ira.c (ira_init_register_move_cost): Remove assert.

2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/82444
	* gcc.target/i386/pr82444.c: New.

From-SVN: r257254

gcc/ChangeLog

+2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/82444
+	* ira.c (ira_init_register_move_cost): Remove assert.
+
 2018-01-31  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR rtl-optimization/84071

gcc/ira.c

@@ -1578,7 +1578,8 @@ ira_init_register_move_cost (machine_mode mode)
   ira_assert (ira_register_move_cost[mode] == NULL
 	      && ira_may_move_in_cost[mode] == NULL
 	      && ira_may_move_out_cost[mode] == NULL);
-  ira_assert (have_regs_of_mode[mode]);
+  /* have_regs_of_mode[mode] might be false because it might be
+     E_<mode> (see genmodes) of pseudo with <mode>.  */
   for (cl1 = 0; cl1 < N_REG_CLASSES; cl1++)
     for (cl2 = 0; cl2 < N_REG_CLASSES; cl2++)
       {

gcc/testsuite/ChangeLog

+2018-01-31  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/82444
+	* gcc.target/i386/pr82444.c: New.
+
 2018-01-31  Will Schmidt  <will_schmidt@vnet.ibm.com>
 
 	* gcc.target/powerpc/altivec-13.c: Remove VSX-requiring built-ins.

gcc/testsuite/gcc.target/i386/pr82444.c

+/* { dg-do compile { target { ia32 } } } */
+/* { dg-options "-march=athlon" } */
+
+__float128 a;
+void b () { __asm__("" : "+r"(a)); } /* { dg-error "inconsistent operand constraints in an" } */