From 292b44341cc5355d353cb652eb3d78d3341c800f Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 11 Nov 2011 20:58:10 +0100
Subject: [PATCH] i386-protos.h (ix86_maybe_emit_epilogue_vzeroupper): New
 prototype.

	* config/i386/i386-protos.h (ix86_maybe_emit_epilogue_vzeroupper):
	New prototype.
	* config/i386/i386.c (ix86_maybe_emit_epilogue_vzeroupper): New
	function.
	(ix86_expand_epilogue): Use it.
	* config/i386/i386.md (return, simple_return): Call it in the
	expanders.

From-SVN: r181300
---
 gcc/ChangeLog                 |  8 ++++++++
 gcc/config/i386/i386-protos.h |  1 +
 gcc/config/i386/i386.c        | 16 ++++++++++++----
 gcc/config/i386/i386.md       |  2 ++
 4 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 40c57d161cb..73bec2249f2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,13 @@
 2011-11-11  Jakub Jelinek  <jakub@redhat.com>
 
+	* config/i386/i386-protos.h (ix86_maybe_emit_epilogue_vzeroupper):
+	New prototype.
+	* config/i386/i386.c (ix86_maybe_emit_epilogue_vzeroupper): New
+	function.
+	(ix86_expand_epilogue): Use it.
+	* config/i386/i386.md (return, simple_return): Call it in the
+	expanders.
+
 	PR tree-optimization/51091
 	* tree-stdarg.c (execute_optimize_stdarg): Ignore TREE_CLOBBER_P
 	rhs also in the va_list_simple_ptr case.
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 6bfe13d47d6..630112f625d 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -32,6 +32,7 @@ extern void ix86_setup_frame_addresses (void);
 
 extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int);
 extern void ix86_expand_prologue (void);
+extern void ix86_maybe_emit_epilogue_vzeroupper (void);
 extern void ix86_expand_epilogue (int);
 extern void ix86_expand_split_stack_prologue (void);
 
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index f39eb116f77..7c5814f21c3 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -10614,6 +10614,17 @@ ix86_emit_restore_sse_regs_using_mov (HOST_WIDE_INT cfa_offset,
       }
 }
 
+/* Emit vzeroupper if needed.  */
+
+void
+ix86_maybe_emit_epilogue_vzeroupper (void)
+{
+  if (TARGET_VZEROUPPER
+      && !TREE_THIS_VOLATILE (cfun->decl)
+      && !cfun->machine->caller_return_avx256_p)
+    emit_insn (gen_avx_vzeroupper (GEN_INT (call_no_avx256)));
+}
+
 /* Restore function stack, frame, and registers.  */
 
 void
@@ -10911,10 +10922,7 @@ ix86_expand_epilogue (int style)
     }
 
   /* Emit vzeroupper if needed.  */
-  if (TARGET_VZEROUPPER
-      && !TREE_THIS_VOLATILE (cfun->decl)
-      && !cfun->machine->caller_return_avx256_p)
-    emit_insn (gen_avx_vzeroupper (GEN_INT (call_no_avx256)));
+  ix86_maybe_emit_epilogue_vzeroupper ();
 
   if (crtl->args.pops_args && crtl->args.size)
     {
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 377c78eec51..bc602532304 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -11736,6 +11736,7 @@
   [(simple_return)]
   "ix86_can_use_return_insn_p ()"
 {
+  ix86_maybe_emit_epilogue_vzeroupper ();
   if (crtl->args.pops_args)
     {
       rtx popc = GEN_INT (crtl->args.pops_args);
@@ -11752,6 +11753,7 @@
   [(simple_return)]
   "!TARGET_SEH"
 {
+  ix86_maybe_emit_epilogue_vzeroupper ();
   if (crtl->args.pops_args)
     {
       rtx popc = GEN_INT (crtl->args.pops_args);