From: DJ Delorie <dj@redhat.com>
Date: Fri, 20 Jan 2006 21:55:41 +0000 (-0500)
Subject: varasm.c (initialize_constant_valid_p): Allow pointers initialized from integer const... 
X-Git-Tag: releases/gcc-4.2.0~4705
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=971dfb9b990c519338d5c497be7924f102a09a11;p=thirdparty%2Fgcc.git

varasm.c (initialize_constant_valid_p): Allow pointers initialized from integer constants of lesser precision.

* varasm.c (initialize_constant_valid_p): Allow pointers
initialized from integer constants of lesser precision.
(output_constant): Allow non-int-sized pointer modes to be
initialized from integer constants.

From-SVN: r110041
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c41ef43e98ce..d5f45629c569 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2006-01-20  DJ Delorie  <dj@redhat.com>
+
+	* varasm.c (initialize_constant_valid_p): Allow pointers
+	initialized from integer constants of lesser precision.
+	(output_constant): Allow non-int-sized pointer modes to be
+	initialized from integer constants.
+
 2006-01-20  Joseph S. Myers  <joseph@codesourcery.com>
 
 	PR libstdc++/25524
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 05bfabf288d8..5e42b07d888a 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -3553,6 +3553,9 @@ initializer_constant_valid_p (tree value, tree endtype)
 	     || TREE_CODE (dest_type) == OFFSET_TYPE)
 	    && INTEGRAL_TYPE_P (src_type))
 	  {
+	    if (TREE_CODE (src) == INTEGER_CST
+		&& TYPE_PRECISION (dest_type) >= TYPE_PRECISION (src_type))
+	      return null_pointer_node;
 	    if (integer_zerop (src))
 	      return null_pointer_node;
 	    else if (TYPE_PRECISION (dest_type) <= TYPE_PRECISION (src_type))
@@ -3732,6 +3735,11 @@ output_constant (tree exp, unsigned HOST_WIDE_INT size, unsigned int align)
 	 way.  */
       if (TREE_CODE (exp) == ADDR_EXPR)
 	exp = build1 (ADDR_EXPR, saved_type, TREE_OPERAND (exp, 0));
+      /* Likewise for constant ints.  */
+      else if (TREE_CODE (exp) == INTEGER_CST)
+	exp = build_int_cst_wide (saved_type, TREE_INT_CST_LOW (exp),
+				  TREE_INT_CST_HIGH (exp));
+      
     }
 
   /* Eliminate any conversions since we'll be outputting the underlying