x86: Revert reversion 267133

Revert commit:

commit 76c21b271247ccbd681bdb4530426d2fe35dbfa5
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Dec 14 12:38:04 2018 +0000

    x86: Don't use get_frame_size when finalizing stack frame

gcc/

	PR target/88483
	* config/i386/i386.c (ix86_finalize_stack_frame_flags): Revert
	reversion 267133.

gcc/testsuite/

	PR target/88483
	* gcc.target/i386/stackalign/pr88483.c: Removed.  Revert
	reversion 267133.

From-SVN: r267186

gcc/ChangeLog

+2018-12-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/88483
+	* config/i386/i386.c (ix86_finalize_stack_frame_flags): Revert
+	reversion 267133.
+
 2018-12-15  Jan Hubicka  <hubicka@ucw.cz>
 
 	* ipa-fnsummary.c (analyze_function_body): Do not loeak conds and

gcc/config/i386/i386.c

@@ -12879,6 +12879,7 @@ ix86_finalize_stack_frame_flags (void)
 	   && flag_exceptions
 	   && cfun->can_throw_non_call_exceptions)
       && !ix86_frame_pointer_required ()
+      && get_frame_size () == 0
       && ix86_nsaved_sseregs () == 0
       && ix86_varargs_gpr_size + ix86_varargs_fpr_size == 0)
     {

gcc/testsuite/ChangeLog

+2018-12-15  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/88483
+	* gcc.target/i386/stackalign/pr88483.c: Removed.  Revert
+	reversion 267133.
+
 2018-12-15  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/87944

gcc/testsuite/gcc.target/i386/stackalign/pr88483.c

-/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
-/* { dg-options "-O2 -mavx2" } */
-
-struct B
-{
-  char a[12];
-  int b;
-};
-
-struct B
-f2 (void)
-{
-  struct B x = {};
-  return x;
-}
-
-/* { dg-final { scan-assembler-not "and\[lq\]?\[^\\n\]*-\[0-9\]+,\[^\\n\]*sp" } } */