From: DJ Delorie <dj@gcc.gnu.org>
Date: Tue, 17 Jan 2006 00:58:06 +0000 (-0500)
Subject: reload.c (reg_overlap_mentioned_for_reload_p): Handle subregs of mems.
X-Git-Tag: releases/gcc-4.2.0~4830
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=838f78d63b20aaf9078bf5afe2e94054fcd180f7;p=thirdparty%2Fgcc.git

reload.c (reg_overlap_mentioned_for_reload_p): Handle subregs of mems.

* reload.c (reg_overlap_mentioned_for_reload_p): Handle subregs of
mems.

From-SVN: r109792
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bc7f0018efb2..e8eeccb5c0df 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-01-16  DJ Delorie  <dj@redhat.com>
+
+	* reload.c (reg_overlap_mentioned_for_reload_p): Handle subregs of
+	mems.
+
 2006-01-16  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	* pa.md: Disparage copies between general and floating-point registers
@@ -31,7 +36,7 @@
 	* basic-block.h: Remove the prototype for
 	partition_hot_cold_basic_blocks.
 
-2006-01-16  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
+2006-01-16  Rafael Ãvila de EspÃ­ndola <rafael.espindola@gmail.com>
 
 	* cppspec.c (lang_specific_spec_functions): remove
 	* gcc.c (lookup_spec_function): use static_spec_functions directelly
diff --git a/gcc/reload.c b/gcc/reload.c
index 2b61a8eded3f..92ad08558120 100644
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -6329,6 +6329,8 @@ reg_overlap_mentioned_for_reload_p (rtx x, rtx in)
   /* If either argument is a constant, then modifying X can not affect IN.  */
   if (CONSTANT_P (x) || CONSTANT_P (in))
     return 0;
+  else if (GET_CODE (x) == SUBREG && GET_CODE (SUBREG_REG (x)) == MEM)
+    return refers_to_mem_for_reload_p (in);
   else if (GET_CODE (x) == SUBREG)
     {
       regno = REGNO (SUBREG_REG (x));