(movhi): Handle generation of large constants during

and after reload.

From-SVN: r13730

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 257289c9794cdf5d7dd24e2030ed01391936094c..33cce5467176b467d02784b67a596103c9b2a9b6 100644 (file)
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -2590,6 +2590,20 @@
            }
        }
     }
+  /* Handle loading a large integer during reload */
+  else if (GET_CODE (operands[1]) == CONST_INT
+          && ! const_ok_for_arm (INTVAL (operands[1]))
+          && ! const_ok_for_arm (~INTVAL (operands[1])))
+    {
+      /* Writing a constant to memory needs a scratch, which should
+        be handled with SECONDARY_RELOADs.  */
+      if (GET_CODE (operands[0]) != REG)
+       abort ();
+
+      operands[0] = gen_rtx (SUBREG, SImode, operands[0], 0);
+      emit_insn (gen_movsi (operands[0], operands[1]));
+      DONE;
+    }
 }
 ")