From 7f4db7c80779ecbc57d1146654daf0acfe18de66 Mon Sep 17 00:00:00 2001
From: rus <rus@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 9 Nov 2009 20:58:24 +0000
Subject: merge from trunk

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/profile-stdlib@154052 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/rtl.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'gcc/rtl.c')

diff --git a/gcc/rtl.c b/gcc/rtl.c
index feeb40bf61b..58867aec7cc 100644
--- a/gcc/rtl.c
+++ b/gcc/rtl.c
@@ -164,6 +164,20 @@ rtvec_alloc (int n)
   return rt;
 }
 
+/* Create a bitwise copy of VEC.  */
+
+rtvec
+shallow_copy_rtvec (rtvec vec)
+{
+  rtvec newvec;
+  int n;
+
+  n = GET_NUM_ELEM (vec);
+  newvec = rtvec_alloc (n);
+  memcpy (&newvec->elem[0], &vec->elem[0], sizeof (rtx) * n);
+  return newvec;
+}
+
 /* Return the number of bytes occupied by rtx value X.  */
 
 unsigned int
@@ -232,6 +246,8 @@ copy_rtx (rtx orig)
   switch (code)
     {
     case REG:
+    case DEBUG_EXPR:
+    case VALUE:
     case CONST_INT:
     case CONST_DOUBLE:
     case CONST_FIXED:
@@ -369,6 +385,10 @@ rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
   if (GET_MODE (x) != GET_MODE (y))
     return 0;
 
+  /* MEMs refering to different address space are not equivalent.  */
+  if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
+    return 0;
+
   /* Some RTL can be compared nonrecursively.  */
   switch (code)
     {
@@ -381,6 +401,7 @@ rtx_equal_p_cb (const_rtx x, const_rtx y, rtx_equal_p_callback_function cb)
     case SYMBOL_REF:
       return XSTR (x, 0) == XSTR (y, 0);
 
+    case DEBUG_EXPR:
     case VALUE:
     case SCRATCH:
     case CONST_DOUBLE:
@@ -484,6 +505,10 @@ rtx_equal_p (const_rtx x, const_rtx y)
   if (GET_MODE (x) != GET_MODE (y))
     return 0;
 
+  /* MEMs refering to different address space are not equivalent.  */
+  if (code == MEM && MEM_ADDR_SPACE (x) != MEM_ADDR_SPACE (y))
+    return 0;
+
   /* Some RTL can be compared nonrecursively.  */
   switch (code)
     {
@@ -496,6 +521,7 @@ rtx_equal_p (const_rtx x, const_rtx y)
     case SYMBOL_REF:
       return XSTR (x, 0) == XSTR (y, 0);
 
+    case DEBUG_EXPR:
     case VALUE:
     case SCRATCH:
     case CONST_DOUBLE:
-- 
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