Mark -fstack-protect as optimization flag.

	PR middle-end/71585
	* common.opt (flag_stack_protect): Mark the flag as optimization
	flag.
	* ipa-inline-transform.c (inline_call): Remove unnecessary call
	of build_optimization_node.
	* gcc.dg/pr71585.c: New test.
	* gcc.dg/pr71585-2.c: New test.
	* gcc.dg/pr71585-3.c: New test.

From-SVN: r237845

gcc/ChangeLog

+2016-06-29  Martin Liska  <mliska@suse.cz>
+
+	PR middle-end/71585
+	* common.opt (flag_stack_protect): Mark the flag as optimization
+	flag.
+	* ipa-inline-transform.c (inline_call): Remove unnecessary call
+	of build_optimization_node.
+
 2016-06-29  Yuri Rumyantsev  <ysrumyan@gmail.com>
 
 	PR tree-optimization/70729

gcc/common.opt

@@ -2221,19 +2221,19 @@ Common RejectNegative Joined Var(common_deferred_options) Defer
 -fstack-limit-symbol=<name>	Trap if the stack goes past symbol <name>.
 
 fstack-protector
-Common Report Var(flag_stack_protect, 1) Init(-1)
+Common Report Var(flag_stack_protect, 1) Init(-1) Optimization
 Use propolice as a stack protection method.
 
 fstack-protector-all
-Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1)
+Common Report RejectNegative Var(flag_stack_protect, 2) Init(-1) Optimization
 Use a stack protection method for every function.
 
 fstack-protector-strong
-Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1)
+Common Report RejectNegative Var(flag_stack_protect, 3) Init(-1) Optimization
 Use a smart stack protection method for certain functions.
 
 fstack-protector-explicit
-Common Report RejectNegative Var(flag_stack_protect, 4)
+Common Report RejectNegative Var(flag_stack_protect, 4) Optimization
 Use stack protection method only for functions with the stack_protect attribute.
 
 fstack-usage

gcc/ipa-inline-transform.c

@@ -342,10 +342,10 @@ inline_call (struct cgraph_edge *e, bool update_original,
       if (dump_file)
 	fprintf (dump_file, "Dropping flag_strict_aliasing on %s:%i\n",
 		 to->name (), to->order);
-      build_optimization_node (&opts);
       DECL_FUNCTION_SPECIFIC_OPTIMIZATION (to->decl)
 	 = build_optimization_node (&opts);
     }
+
   inline_summary *caller_info = inline_summaries->get (to);
   inline_summary *callee_info = inline_summaries->get (callee);
   if (!caller_info->fp_expressions && callee_info->fp_expressions)
@@ -402,7 +402,6 @@ inline_call (struct cgraph_edge *e, bool update_original,
 	  if (dump_file)
 	    fprintf (dump_file, "Copying FP flags from %s:%i to %s:%i\n",
 		     callee->name (), callee->order, to->name (), to->order);
-	  build_optimization_node (&opts);
 	  DECL_FUNCTION_SPECIFIC_OPTIMIZATION (to->decl)
 	     = build_optimization_node (&opts);
 	}

gcc/testsuite/ChangeLog

+2016-06-29  Martin Liska  <mliska@suse.cz>
+
+	* gcc.dg/pr71585.c: New test.
+	* gcc.dg/pr71585-2.c: New test.
+	* gcc.dg/pr71585-3.c: New test.
+
 2016-06-29  Yuri Rumyantsev  <ysrumyan@gmail.com>
 
 	PR tree-optimization/70729

gcc/testsuite/gcc.dg/pr71585-2.c

+/* Test that stack protection is done on chosen functions. */
+
+/* { dg-do compile { target i?86-*-* x86_64-*-* rs6000-*-* s390x-*-* } } */
+/* { dg-options "-O2 -fstack-protector-all" } */
+
+/* This test checks the presence of __stack_chk_fail function in assembler.
+ * Compiler generates _stack_chk_fail_local (wrapper) calls instead for PIC.
+ */
+/* { dg-require-effective-target nonpic } */
+
+static int foo()
+{
+  return 0;
+}
+
+#pragma GCC push_options
+#pragma GCC optimize ("-fno-stack-protector")
+
+int main() { foo (); }
+
+#pragma GCC pop_options
+
+/* { dg-final { scan-assembler-times "stack_chk_fail" 0 } } */

gcc/testsuite/gcc.dg/pr71585-3.c

+/* Test that stack protection is done on chosen functions. */
+
+/* { dg-do compile { target i?86-*-* x86_64-*-* rs6000-*-* s390x-*-* } } */
+/* { dg-options "-O2 -fstack-protector-all" } */
+
+/* This test checks the presence of __stack_chk_fail function in assembler.
+ * Compiler generates _stack_chk_fail_local (wrapper) calls instead for PIC.
+ */
+/* { dg-require-effective-target nonpic } */
+
+
+#pragma GCC push_options
+#pragma GCC optimize ("-fno-stack-protector")
+
+int foo()
+{
+  return 0;
+}
+
+#pragma GCC pop_options
+
+int main() { foo (); }
+
+/* { dg-final { scan-assembler-times "stack_chk_fail" 1 } } */

gcc/testsuite/gcc.dg/pr71585.c

+/* Test that stack protection is done on chosen functions. */
+
+/* { dg-do compile { target i?86-*-* x86_64-*-* rs6000-*-* s390x-*-* } } */
+/* { dg-options "-O2 -fstack-protector-all" } */
+
+/* This test checks the presence of __stack_chk_fail function in assembler.
+ * Compiler generates _stack_chk_fail_local (wrapper) calls instead for PIC.
+ */
+/* { dg-require-effective-target nonpic } */
+
+#pragma GCC push_options
+
+#pragma GCC optimize ("-fno-stack-protector")
+__attribute__((constructor)) void foo()
+{
+  asm ("");
+}
+
+#pragma GCC pop_options
+
+int main() { return 0; }
+
+/* { dg-final { scan-assembler-times "stack_chk_fail" 1 } } */