arm-c.c (arm_option_override): Initialize target_option_current_node.

2016-02-24  Christian Bruel  <christian.bruel@st.com>

	* config/arm/arm-c.c (arm_option_override): Initialize
	target_option_current_node.
	* config/arm/arm.c (arm_pragma_target_parse): Replace
	build_target_option_node call by target_option_current_node.
	Set target_option_current_node.
	Fix comments.

From-SVN: r233654

gcc/ChangeLog

+2016-02-24  Christian Bruel  <christian.bruel@st.com>
+
+	* config/arm/arm-c.c (arm_option_override): Initialize
+	target_option_current_node.
+	* config/arm/arm.c (arm_pragma_target_parse): Replace
+	build_target_option_node call by target_option_current_node.
+	Set target_option_current_node.
+	Fix comments.
+
 2016-02-23  David Edelsohn  <dje.gcc@gmail.com>
 
 	PR target/69810

gcc/config/arm/arm-c.c

@@ -199,7 +199,7 @@ arm_cpu_cpp_builtins (struct cpp_reader * pfile)
 static bool
 arm_pragma_target_parse (tree args, tree pop_target)
 {
-  tree prev_tree = build_target_option_node (&global_options);
+  tree prev_tree = target_option_current_node;
   tree cur_tree;
   struct cl_target_option *prev_opt;
   struct cl_target_option *cur_opt;
@@ -220,11 +220,16 @@ arm_pragma_target_parse (tree args, tree pop_target)
 				    TREE_TARGET_OPTION (prev_tree));
 	  return false;
 	}
+
+      /* handle_pragma_pop_options and handle_pragma_reset_options will set
+       target_option_current_node, but not handle_pragma_target.  */
+      target_option_current_node = cur_tree;
     }
 
-  /* Figure out the previous mode.  */
-  prev_opt  = TREE_TARGET_OPTION (prev_tree);
-  cur_opt   = TREE_TARGET_OPTION (cur_tree);
+  /* Update macros if target_node changes. The global state will be restored
+     by arm_set_current_function.  */
+  prev_opt = TREE_TARGET_OPTION (prev_tree);
+  cur_opt  = TREE_TARGET_OPTION (cur_tree);
 
   gcc_assert (prev_opt);
   gcc_assert (cur_opt);

gcc/config/arm/arm.c

@@ -3453,8 +3453,9 @@ arm_option_override (void)
   arm_add_gc_roots ();
 
   /* Save the initial options in case the user does function specific
-     options.  */
-  target_option_default_node = build_target_option_node (&global_options);
+     options or #pragma target.  */
+  target_option_default_node = target_option_current_node
+    = build_target_option_node (&global_options);
 
   /* Init initial mode for testing.  */
   thumb_flipper = TARGET_THUMB;

gcc/testsuite/ChangeLog

+2016-02-24  Christian Bruel  <christian.bruel@st.com>
+
+	* gcc.target/arm/pragma_cpp_fma.c: New test.
+
 2016-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
 	PR fortran/61156
@@ -89,6 +93,7 @@
 	PR c/69900
 	* gcc.dg/pr69900.c: New test.
 
+>>>>>>> .r233653
 2016-02-23  Martin Jambor  <mjambor@suse.cz>
 
 	PR tree-optimization/69666

gcc/testsuite/gcc.target/arm/pragma_cpp_fma.c

+/* Test that FMA macro is correctly undef.  */
+/* { dg-do compile } */
+/* { dg-skip-if "Default no fma" { *-*-* } { "-mfpu=*vfpv4*" "-mfpu=*armv8"} } */
+/* { dg-require-effective-target arm_fp_ok } */
+/* { dg-add-options arm_fp } */
+
+#pragma GCC push_options
+#pragma GCC target ("fpu=crypto-neon-fp-armv8")
+
+#ifndef __ARM_FEATURE_FMA
+#error "__ARM_FEATURE_FMA is not defined but should be"
+#endif
+
+#ifndef __ARM_FEATURE_CRYPTO
+#error "__ARM_FEATURE_CRYPTO is not defined but should be"
+#endif
+
+#if __ARM_NEON_FP != 6
+#error "__ARM_NEON_FP"
+#endif
+
+#if __ARM_FP != 14
+#error "__ARM_FP"
+#endif
+
+#pragma GCC pop_options
+
+#pragma GCC push_options
+#pragma GCC target ("fpu=neon-vfpv4")
+#pragma GCC pop_options
+
+#ifdef __ARM_FEATURE_FMA
+#error "__ARM_FEATURE_FMA is defined but should not be"
+#endif
+
+