Restore original scattering when the transform is not legal.

[pf3gnuchains/gcc-fork.git] / gcc / varasm.c

diff --git a/gcc/varasm.c b/gcc/varasm.c
index f8744f7..2a8fb11 100644 (file)
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -445,7 +445,7 @@ emutls_common_1 (void **loc, void *xstmts)
   args = tree_cons (NULL, x, args);
 
   x = built_in_decls[BUILT_IN_EMUTLS_REGISTER_COMMON];
-  x = build_function_call_expr (x, args);
+  x = build_function_call_expr (UNKNOWN_LOCATION, x, args);
 
   append_to_statement_list (x, pstmts);
   return 1;
@@ -2782,22 +2782,6 @@ decode_addr_const (tree exp, struct addr_const *value)
   value->offset = offset;
 }
 \f
-/* Uniquize all constants that appear in memory.
-   Each constant in memory thus far output is recorded
-   in `const_desc_table'.  */
-
-struct GTY(()) constant_descriptor_tree {
-  /* A MEM for the constant.  */
-  rtx rtl;
-
-  /* The value of the constant.  */
-  tree value;
-
-  /* Hash of value.  Computing the hash from value each time
-     hashfn is called can't work properly, as that means recursive
-     use of the hash table during hash table expansion.  */
-  hashval_t hash;
-};
 
 static GTY((param_is (struct constant_descriptor_tree)))
      htab_t const_desc_htab;
@@ -2805,6 +2789,14 @@ static GTY((param_is (struct constant_descriptor_tree)))
 static struct constant_descriptor_tree * build_constant_desc (tree);
 static void maybe_output_constant_def_contents (struct constant_descriptor_tree *, int);
 
+/* Constant pool accessor function.  */
+
+htab_t 
+constant_pool_htab (void)
+{
+  return const_desc_htab;
+}
+
 /* Compute a hash code for a constant expression.  */
 
 static hashval_t
@@ -3208,6 +3200,10 @@ build_constant_desc (tree exp)
   set_mem_alias_set (rtl, 0);
   set_mem_alias_set (rtl, const_alias_set);
 
+  /* We cannot share RTX'es in pool entries.
+     Mark this piece of RTL as required for unsharing.  */
+  RTX_FLAG (rtl, used) = 1;
+
   /* Set flags or add text to the name to record information, such as
      that it is a local symbol.  If the name is changed, the macro
      ASM_OUTPUT_LABELREF will have to know how to strip this