re PR target/36904 (vector context sensitive keyword vs macros)

	PR target/36904
	* config/rs6000/rs6000-c.c (rs6000_macro_to_expand): Return NULL
	instead of tok->val.node if not expanding to something else.  Handle
	intervening CPP_PADDING tokens.
	(altivec_categorize_keyword): Remove unneeded comparisons.

	* gcc.target/powerpc/altivec-27.c: New test.

From-SVN: r140247

gcc/ChangeLog

+2008-09-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/36904
+	* config/rs6000/rs6000-c.c (rs6000_macro_to_expand): Return NULL
+	instead of tok->val.node if not expanding to something else.  Handle
+	intervening CPP_PADDING tokens.
+	(altivec_categorize_keyword): Remove unneeded comparisons.
+
 2008-09-10  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-pre.c (phi_translate_1): Fix memory leak.

gcc/config/rs6000/rs6000-c.c

@@ -102,16 +102,13 @@ altivec_categorize_keyword (const cpp_token *tok)
     {
       cpp_hashnode *ident = tok->val.node;
 
-      if (ident == C_CPP_HASHNODE (vector_keyword)
-	  || ident == C_CPP_HASHNODE (__vector_keyword))
+      if (ident == C_CPP_HASHNODE (vector_keyword))
 	return C_CPP_HASHNODE (__vector_keyword);
 
-      if (ident == C_CPP_HASHNODE (pixel_keyword)
-	  || ident ==  C_CPP_HASHNODE (__pixel_keyword))
+      if (ident == C_CPP_HASHNODE (pixel_keyword))
 	return C_CPP_HASHNODE (__pixel_keyword);
 
-      if (ident == C_CPP_HASHNODE (bool_keyword)
-	  || ident == C_CPP_HASHNODE (__bool_keyword))
+      if (ident == C_CPP_HASHNODE (bool_keyword))
 	return C_CPP_HASHNODE (__bool_keyword);
 
       return ident;
@@ -158,12 +155,18 @@ rs6000_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
 
   ident = altivec_categorize_keyword (tok);
 
+  if (ident != expand_this)
+    expand_this = NULL;
+
   if (ident == C_CPP_HASHNODE (__vector_keyword))
     {
-      tok = cpp_peek_token (pfile, 0);
+      int idx = 0;
+      do
+	tok = cpp_peek_token (pfile, idx++);
+      while (tok->type == CPP_PADDING);
       ident = altivec_categorize_keyword (tok);
 
-      if (ident ==  C_CPP_HASHNODE (__pixel_keyword))
+      if (ident == C_CPP_HASHNODE (__pixel_keyword))
 	{
 	  expand_this = C_CPP_HASHNODE (__vector_keyword);
 	  expand_bool_pixel = __pixel_keyword;
@@ -178,8 +181,12 @@ rs6000_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
 	  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);
+	      do
+		(void) cpp_get_token (pfile);
+	      while (--idx > 0);
+	      do
+		tok = cpp_peek_token (pfile, idx++);
+	      while (tok->type == CPP_PADDING);
 	      ident = altivec_categorize_keyword (tok);
 	      if (ident)
 		rid_code = (enum rid)(ident->rid_code);
@@ -193,19 +200,23 @@ rs6000_macro_to_expand (cpp_reader *pfile, const cpp_token *tok)
 	      expand_this = C_CPP_HASHNODE (__vector_keyword);
 	      /* If the next keyword is bool or pixel, it
 		 will need to be expanded as well.  */
-	      tok = cpp_peek_token (pfile, 1);
+	      do
+		tok = cpp_peek_token (pfile, idx++);
+	      while (tok->type == CPP_PADDING);
 	      ident = altivec_categorize_keyword (tok);
 
-	      if (ident ==  C_CPP_HASHNODE (__pixel_keyword))
+	      if (ident == C_CPP_HASHNODE (__pixel_keyword))
 		expand_bool_pixel = __pixel_keyword;
 	      else if (ident == C_CPP_HASHNODE (__bool_keyword))
 		expand_bool_pixel = __bool_keyword;
 	      else
 		{
 		  /* Try two tokens down, too.  */
-		  tok = cpp_peek_token (pfile, 2);
+		  do
+		    tok = cpp_peek_token (pfile, idx++);
+		  while (tok->type == CPP_PADDING);
 		  ident = altivec_categorize_keyword (tok);
-		  if (ident ==  C_CPP_HASHNODE (__pixel_keyword))
+		  if (ident == C_CPP_HASHNODE (__pixel_keyword))
 		    expand_bool_pixel = __pixel_keyword;
 		  else if (ident == C_CPP_HASHNODE (__bool_keyword))
 		    expand_bool_pixel = __bool_keyword;

gcc/testsuite/ChangeLog

+2008-09-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/36904
+	* gcc.target/powerpc/altivec-27.c: New test.
+
 2008-09-10  Andrew Pinski  <andrew_pinski@playstation.sony.com>
 
 	PR middle-end/37333

gcc/testsuite/gcc.target/powerpc/altivec-27.c

+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec" } */
+
+#define f0() void x0 (vector float x) { }
+f0 ()
+
+#define f1(type) void x1##type (vector type x) { }
+f1 (float)
+
+#define f2(v, type) void x2##type (v type x) { }
+f2 (vector, float)
+
+#define f3(type) void x3##type (vector bool type x) { }
+f3 (int)
+
+#define f4(v, type) void x4##type (v bool type x) { }
+f4 (vector, int)
+
+#define f5(b, type) void x5##type (vector b type x) { }
+f5 (bool, int)
+
+#define f6(v, b, type) void x6##type (v b type x) { }
+f6 (vector, bool, int)
+
+#define f7(v, b, type) void x7##type (v type b x) { }
+f7 (vector, bool, int)
+
+int vector = 6;
+
+#define v1(v) int x8 (int v) { return v; }
+v1(vector)