spu-c.c (__vector_keyword): New variable.

gcc/
	* config/spu/spu-c.c (__vector_keyword): New variable.
	(vector_keyword): Likewise.
	(spu_categorize_keyword): New function.
	(spu_macro_to_expand): Likewise.
	(spu_cpu_cpp_builtins): Enable context-sensitive macros if not
	compiling an ISO C dialect.

gcc/testsuite/
	* gcc.target/spu/vector.c: New test.
	* gcc.target/spu/vector-ansi.c: Likewise.

From-SVN: r138106

1 files changed, 74 insertions, 0 deletions

diff --git a/gcc/config/spu/spu-c.c b/gcc/config/spu/spu-c.c
index 0b0d2e8..96fe43e 100644
--- a/gcc/config/spu/spu-c.c
+++ b/gcc/config/spu/spu-c.c
@@ -35,6 +35,64 @@
 #include "spu-builtins.h"
 
 
+/* Keep the vector keywords handy for fast comparisons.  */
+static GTY(()) tree __vector_keyword;
+static GTY(()) tree vector_keyword;
+
+static cpp_hashnode *
+spu_categorize_keyword (const cpp_token *tok)
+{
+  if (tok->type == CPP_NAME)
+    {
+      cpp_hashnode *ident = tok->val.node;
+
+      if (ident == C_CPP_HASHNODE (vector_keyword)
+	  || ident == C_CPP_HASHNODE (__vector_keyword))
+	return C_CPP_HASHNODE (__vector_keyword);
+      else
+	return ident;
+    }
+  return 0;
+}
+
+/* Called to decide whether a conditional macro should be expanded.
+   Since we have exactly one such macro (i.e, 'vector'), we do not
+   need to examine the 'tok' parameter.  */
+
+static cpp_hashnode *
+spu_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
+{
+  cpp_hashnode *expand_this = tok->val.node;
+  cpp_hashnode *ident;
+
+  ident = spu_categorize_keyword (tok);
+  if (ident == C_CPP_HASHNODE (__vector_keyword))
+    {
+      tok = cpp_peek_token (pfile, 0);
+      ident = spu_categorize_keyword (tok);
+
+      if (ident)
+	{
+	  enum rid rid_code = (enum rid)(ident->rid_code);
+	  if (ident->type == NT_MACRO)
+	    {
+	      (void) cpp_get_token (pfile);
+	      tok = cpp_peek_token (pfile, 0);
+	      ident = spu_categorize_keyword (tok);
+	      if (ident)
+		rid_code = (enum rid)(ident->rid_code);
+	    }
+	  
+	  if (rid_code == RID_UNSIGNED || rid_code == RID_LONG
+	      || rid_code == RID_SHORT || rid_code == RID_SIGNED
+	      || rid_code == RID_INT || rid_code == RID_CHAR
+	      || rid_code == RID_FLOAT || rid_code == RID_DOUBLE)
+	    expand_this = C_CPP_HASHNODE (__vector_keyword);
+	}
+    }
+  return expand_this;
+}
+
 /* target hook for resolve_overloaded_builtin(). Returns a function call
    RTX if we can resolve the overloaded builtin */
 tree
@@ -140,6 +198,22 @@ spu_cpu_cpp_builtins (struct cpp_reader *pfile)
   if (spu_arch == PROCESSOR_CELLEDP)
     builtin_define_std ("__SPU_EDP__");
   builtin_define_std ("__vector=__attribute__((__spu_vector__))");
+
+  if (!flag_iso)
+    {
+      /* Define this when supporting context-sensitive keywords.  */
+      cpp_define (pfile, "__VECTOR_KEYWORD_SUPPORTED__");
+      cpp_define (pfile, "vector=vector");
+
+      /* Initialize vector keywords.  */
+      __vector_keyword = get_identifier ("__vector");
+      C_CPP_HASHNODE (__vector_keyword)->flags |= NODE_CONDITIONAL;
+      vector_keyword = get_identifier ("vector");
+      C_CPP_HASHNODE (vector_keyword)->flags |= NODE_CONDITIONAL;
+
+      /* Enable context-sensitive macros.  */
+      cpp_get_callbacks (pfile)->macro_to_expand = spu_macro_to_expand;
+    }
 }
 
 void