From: Walter Lee <walt@tilera.com>
Date: Sat, 25 Jan 2014 22:43:56 +0000 (+0000)
Subject: backport: tilegx.c (tilegx_expand_builtin): Set PREFETCH_SCHEDULE_BARRIER_P to true... 
X-Git-Tag: releases/gcc-4.7.4~294
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9116ed526d5004ec4361e18a199fbe4987e1d5b;p=thirdparty%2Fgcc.git

backport: tilegx.c (tilegx_expand_builtin): Set PREFETCH_SCHEDULE_BARRIER_P to true for prefetches.

2014-01-25  Walter Lee  <walt@tilera.com>

            Backport from mainline
            2014-01-25  Walter Lee  <walt@tilera.com>

            * config/tilegx/tilegx.c (tilegx_expand_builtin): Set
            PREFETCH_SCHEDULE_BARRIER_P to true for prefetches.
            * config/tilepro/tilepro.c (tilepro_expand_builtin): Ditto.

From-SVN: r207101
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 66487d2f4c44..651068ff871f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2014-01-25  Walter Lee  <walt@tilera.com>
+
+	Backport from mainline
+	2014-01-25  Walter Lee  <walt@tilera.com>
+
+	* config/tilegx/tilegx.c (tilegx_expand_builtin): Set
+	PREFETCH_SCHEDULE_BARRIER_P to true for prefetches.
+	* config/tilepro/tilepro.c (tilepro_expand_builtin): Ditto.
+
 2014-01-25  Walter Lee  <walt@tilera.com>
 
 	Backport from mainline
diff --git a/gcc/config/tilegx/tilegx.c b/gcc/config/tilegx/tilegx.c
index 6514363c17f5..e7ab94881f09 100644
--- a/gcc/config/tilegx/tilegx.c
+++ b/gcc/config/tilegx/tilegx.c
@@ -3500,6 +3500,12 @@ tilegx_expand_builtin (tree exp,
     }
   if (!pat)
     return NULL_RTX;
+
+  /* If we are generating a prefetch, tell the scheduler not to move
+     it around.  */
+  if (GET_CODE (pat) == PREFETCH)
+    PREFETCH_SCHEDULE_BARRIER_P (pat) = true;
+
   emit_insn (pat);
 
   if (nonvoid)
diff --git a/gcc/config/tilepro/tilepro.c b/gcc/config/tilepro/tilepro.c
index c2507c2aea82..e5a19f02aca9 100644
--- a/gcc/config/tilepro/tilepro.c
+++ b/gcc/config/tilepro/tilepro.c
@@ -3167,6 +3167,12 @@ tilepro_expand_builtin (tree exp,
     }
   if (!pat)
     return NULL_RTX;
+
+  /* If we are generating a prefetch, tell the scheduler not to move
+     it around.  */
+  if (GET_CODE (pat) == PREFETCH)
+    PREFETCH_SCHEDULE_BARRIER_P (pat) = true;
+
   emit_insn (pat);
 
   if (nonvoid)