(restore_referenced_regs): New variable saveregs which is number of regs to save...

(restore_referenced_regs): New variable saveregs
which is number of regs to save at a time, instead of numregs,
which is total number of registers to save.

From-SVN: r4445

diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index db49610e370a6fbf3b3d263caf8f98bc52d31c23..ecdc20aa600d6b290e7ae37dfe02d2657fbfd0ba 100644 (file)
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -605,13 +605,15 @@ restore_referenced_regs (x, insn, insn_mode)
 
       else if (regno < FIRST_PSEUDO_REGISTER)
        {
-         int numregs = MIN (HARD_REGNO_NREGS (regno, GET_MODE (x)),
-                            MOVE_MAX / UNITS_PER_WORD);
+         int numregs = HARD_REGNO_NREGS (regno, GET_MODE (x));
+         /* Save at most SAVEREGS at a time.  This can not be larger than
+            MOVE_MAX, because that causes insert_save_restore to fail.  */
+         int saveregs = MIN (numregs, MOVE_MAX / UNITS_PER_WORD);
          int endregno = regno + numregs;
 
          for (i = regno; i < endregno; i++)
            if (TEST_HARD_REG_BIT (hard_regs_need_restore, i))
-             i += insert_save_restore (insn, 0, i, insn_mode, numregs);
+             i += insert_save_restore (insn, 0, i, insn_mode, saveregs);
        }
 
       return;