From f57b1ad380462f8b4fd5ce5208b605095f81d50b Mon Sep 17 00:00:00 2001
From: Richard Earnshaw <erich@gnu.org>
Date: Tue, 18 Mar 1997 09:28:41 +0000
Subject: (movhi): Handle generation of large constants during and after
 reload.

From-SVN: r13730
---
 gcc/config/arm/arm.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'gcc')

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 257289c..33cce54 100644
--- 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;
+    }
 }
 ")
 
-- 
cgit v1.1