From: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Date: Mon, 14 Apr 2003 21:33:05 +0000 (+0000)
Subject: integrate.c (expand_inline_function): Don't inline if would lose /u on a BLKmode... 
X-Git-Tag: releases/gcc-3.4.0~7303
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2443af37208590b754984ffd04b8ac19db5eff9f;p=thirdparty%2Fgcc.git

integrate.c (expand_inline_function): Don't inline if would lose /u on a BLKmode TARGET.

	* integrate.c (expand_inline_function): Don't inline if would
	lose /u on a BLKmode TARGET.

From-SVN: r65594
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a53b3b686b52..8b0dafc18f97 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-04-14  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* integrate.c (expand_inline_function): Don't inline if would
+	lose /u on a BLKmode TARGET.
+
 2003-04-14  Joel Brobecker  <brobecker@gnat.com>
 
         * dwarf2out.c (gen_compile_unit_die): Emit DW_LANG_Ada95 instead
diff --git a/gcc/integrate.c b/gcc/integrate.c
index f26a94c66a11..7a1865881c66 100644
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -736,6 +736,14 @@ expand_inline_function (fndecl, parms, target, ignore, type,
 	return (rtx) (size_t) -1;
     }
 
+  /* If there is a TARGET which is a readonly BLKmode MEM and DECL_RESULT
+     is also a mem, we are going to lose the readonly on the stores, so don't
+     inline.  */
+  if (target != 0 && GET_CODE (target) == MEM && GET_MODE (target) == BLKmode
+      && RTX_UNCHANGING_P (target) && DECL_RTL_SET_P (DECL_RESULT (fndecl))
+      && GET_CODE (DECL_RTL (DECL_RESULT (fndecl))) == MEM)
+    return (rtx) (size_t) -1;
+
   /* Extra arguments are valid, but will be ignored below, so we must
      evaluate them here for side-effects.  */
   for (; actual; actual = TREE_CHAIN (actual))