(expand_decl): If stack checking, use alloca for large vars.

From-SVN: r14472

(expand_decl): If stack checking, use alloca for large vars.
From-SVN: r14472
5e4ef18a · Richard Kenner · 76e0d211 · 5e4ef18a
Commit 5e4ef18a authored Jul 17, 1997 by Richard Kenner
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gcc/stmt.c
+5 -1

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--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -3573,7 +3573,11 @@ expand_decl (decl)
 			   / BITS_PER_UNIT));
    }

-  else if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
+  else if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST
+	   && ! (flag_stack_check && ! STACK_CHECK_BUILTIN
+		 && (TREE_INT_CST_HIGH (DECL_SIZE (decl)) != 0
+		     || (TREE_INT_CST_LOW (DECL_SIZE (decl))
+			 > STACK_CHECK_MAX_VAR_SIZE * BITS_PER_UNIT))))
    {
      /* Variable of fixed size that goes on the stack.  */
      rtx oldaddr = 0;