From: Aldy Hernandez <aldyh@redhat.com>
Date: Fri, 14 Jan 2005 16:52:43 +0000 (+0000)
Subject: rs6000.c (rs6000_stack_info): Fix caching of SPE 64-bit register usage.
X-Git-Tag: releases/gcc-4.0.0~1577
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b5a5beb9830357e16ca31590f68a73d59c95678d;p=thirdparty%2Fgcc.git

rs6000.c (rs6000_stack_info): Fix caching of SPE 64-bit register usage.

	* config/rs6000/rs6000.c (rs6000_stack_info): Fix caching of SPE
	64-bit register usage.
	(spe_func_has_64bit_regs_p): Add FIXME note.

[[Split portion of a mixed commit.]]

From-SVN: r93648.2
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ff8610ce9f80..d79d9c006234 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-01-14  Aldy Hernandez  <aldyh@redhat.com>
+
+	* config/rs6000/rs6000.c (rs6000_stack_info): Fix caching of SPE
+	64-bit register usage.
+	(spe_func_has_64bit_regs_p): Add FIXME note.
+
 2005-01-14  Aldy Hernandez  <aldyh@redhat.com>
 
 	* config/rs6000/rs6000.c (rs6000_generate_compare): Replace
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index b3c3534186a1..a6a8871052c6 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -12621,10 +12621,9 @@ rs6000_stack_info (void)
     {
       /* Cache value so we don't rescan instruction chain over and over.  */
       if (cfun->machine->insn_chain_scanned_p == 0)
-	{
-	  cfun->machine->insn_chain_scanned_p = 1;
-	  info_ptr->spe_64bit_regs_used = (int) spe_func_has_64bit_regs_p ();
-	}
+	cfun->machine->insn_chain_scanned_p
+	  = spe_func_has_64bit_regs_p () + 1;
+      info_ptr->spe_64bit_regs_used = cfun->machine->insn_chain_scanned_p - 1;
     }
 
   /* Select which calling sequence.  */
@@ -12933,6 +12932,13 @@ spe_func_has_64bit_regs_p (void)
 	{
 	  rtx i;
 
+	  /* FIXME: This should be implemented with attributes...
+
+	         (set_attr "spe64" "true")....then,
+	         if (get_spe64(insn)) return true;
+
+	     It's the only reliable way to do the stuff below.  */
+
 	  i = PATTERN (insn);
 	  if (GET_CODE (i) == SET)
 	    {