rs6000: Remove builtin mask check from builtin_decl [PR102347]

As the discussion in PR102347, currently builtin_decl is invoked so
early, it's when making up the function_decl for builtin functions,
at that time the rs6000_builtin_mask could be wrong for those
builtins sitting in #pragma/attribute target functions, though it
will be updated properly later when LTO processes all nodes.

This patch is to align with the practice i386 port adopts, also
align with r10-7462 by relaxing builtin mask checking in some places.

gcc/ChangeLog:

	PR target/102347
	* config/rs6000/rs6000-call.c (rs6000_builtin_decl): Remove builtin mask
	check.

gcc/testsuite/ChangeLog:

	PR target/102347
	* gcc.target/powerpc/pr102347.c: New test.

diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c
index a532be4..cd477fa 100644 (file)
--- a/gcc/config/rs6000/rs6000-call.c
+++ b/gcc/config/rs6000/rs6000-call.c
@@ -16633,7 +16633,10 @@ rs6000_new_builtin_decl (unsigned code, bool /* initialize_p */)
   return rs6000_builtin_decls_x[code];
 }
 
-/* Returns the rs6000 builtin decl for CODE.  */
+/* Returns the rs6000 builtin decl for CODE.  Note that we don't check
+   the builtin mask here since there could be some #pragma/attribute
+   target functions and the rs6000_builtin_mask could be wrong when
+   this checking happens, though it will be updated properly later.  */
 
 tree
 rs6000_builtin_decl (unsigned code, bool initialize_p ATTRIBUTE_UNUSED)
@@ -16641,18 +16644,9 @@ rs6000_builtin_decl (unsigned code, bool initialize_p ATTRIBUTE_UNUSED)
   if (new_builtins_are_live)
     return rs6000_new_builtin_decl (code, initialize_p);
 
-  HOST_WIDE_INT fnmask;
-
   if (code >= RS6000_BUILTIN_COUNT)
     return error_mark_node;
 
-  fnmask = rs6000_builtin_info[code].mask;
-  if ((fnmask & rs6000_builtin_mask) != fnmask)
-    {
-      rs6000_invalid_builtin ((enum rs6000_builtins)code);
-      return error_mark_node;
-    }
-
   return rs6000_builtin_decls[code];
 }
 

diff --git a/gcc/testsuite/gcc.target/powerpc/pr102347.c b/gcc/testsuite/gcc.target/powerpc/pr102347.c
new file mode 100644 (file)
index 0000000..05c439a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr102347.c
@@ -0,0 +1,15 @@
+/* { dg-do link } */
+/* { dg-require-effective-target power10_ok } */
+/* { dg-require-effective-target lto } */
+/* { dg-options "-flto -mdejagnu-cpu=power9" } */
+
+/* Verify there are no error messages in LTO mode.  */
+
+#pragma GCC target "cpu=power10"
+int main ()
+{
+  float *b;
+  __vector_quad c;
+  __builtin_mma_disassemble_acc (b, &c);
+  return 0;
+}