ira.c (ira_init_register_move_cost): Check small subclasses through…

ira.c (ira_init_register_move_cost): Check small subclasses through ira_reg_class_max_nregs and ira_available_class_regs. 2011-08-23 Vladimir Makarov <vmakarov@redhat.com> * ira.c (ira_init_register_move_cost): Check small subclasses through ira_reg_class_max_nregs and ira_available_class_regs. From-SVN: r178019

ira.c (ira_init_register_move_cost): Check small subclasses through…
ira.c (ira_init_register_move_cost): Check small subclasses through ira_reg_class_max_nregs and ira_available_class_regs. 2011-08-23 Vladimir Makarov <vmakarov@redhat.com> * ira.c (ira_init_register_move_cost): Check small subclasses through ira_reg_class_max_nregs and ira_available_class_regs. From-SVN: r178019
d7b17703 · Vladimir Makarov · Vladimir Makarov · 3d3aae5b · d7b17703 · d7b17703
Commit d7b17703 authored Aug 23, 2011 by Vladimir Makarov Committed by Vladimir Makarov Aug 23, 2011
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gcc/ira.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2011-08-23  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* ira.c (ira_init_register_move_cost): Check small subclasses
+	through ira_reg_class_max_nregs and ira_available_class_regs.
+
 2011-08-23  Uros Bizjak  <ubizjak@gmail.com>

 	* config/i386/constraints.md (Yp): New register constraint.

--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -1503,7 +1503,7 @@ ira_init_register_move_cost (enum machine_mode mode)
    {
      /* Some subclasses are to small to have enough registers to hold
 	 a value of MODE.  Just ignore them.  */
-      if (! contains_reg_of_mode[cl1][mode])
+      if (ira_reg_class_max_nregs[cl1][mode] > ira_available_class_regs[cl1])
 	continue;
      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl1]);
      AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);