From: Geoffrey Keating <geoffk@redhat.com>
Date: Mon, 27 Aug 2001 18:25:23 +0000 (+0000)
Subject: reload.c (find_reloads_toplev): Back out this change:
X-Git-Tag: prereleases/libstdc++-3.0.95~2412
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67a44b16b1678e2f3bda0db7127e99dace8399fb;p=thirdparty%2Fgcc.git

reload.c (find_reloads_toplev): Back out this change:

	* reload.c (find_reloads_toplev): Back out this change:

	Wed Jul 26 19:44:05 2000   Hans-Peter Nilsson  <hp@axis.com>

	* reload.c (find_reloads_toplev): Reload a paradoxical subreg of a
	mem if the address is a mode_dependent_address_p.

From-SVN: r45203
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6e42ed165123..01cba25433d8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2001-08-27  Geoffrey Keating  <geoffk@redhat.com>
+
+	* reload.c (find_reloads_toplev): Back out this change:
+
+	Wed Jul 26 19:44:05 2000   Hans-Peter Nilsson  <hp@axis.com>
+
+	* reload.c (find_reloads_toplev): Reload a paradoxical subreg of a
+	mem if the address is a mode_dependent_address_p.
+
 2001-08-27  Vladimir Makarov  <vmakarov@touchme.toronto.redhat.com>
 
         * rtl.def (DEFINE_CPU_UNIT, DEFINE_QUERY_CPU_UNIT, EXCLUSION_SET,
diff --git a/gcc/reload.c b/gcc/reload.c
index 0cf5a0eebf97..4eaed380c244 100644
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -4419,30 +4419,6 @@ find_reloads_toplev (x, opnum, type, ind_levels, is_set_dest, insn,
 	x = find_reloads_subreg_address (x, 1, opnum, type, ind_levels,
 					 insn);
     }
-  else if (code == SUBREG && GET_CODE (SUBREG_REG (x)) == MEM
-	   && (GET_MODE_SIZE (GET_MODE (x))
-	       > GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))))
-	   && mode_dependent_address_p (XEXP (SUBREG_REG (x), 0)))
-    {
-      /* A paradoxical subreg will simply have the mode of the access
-	 changed, so we need to reload such a memory operand to stabilize
-	 the meaning of the memory access.  */
-      enum machine_mode subreg_mode = GET_MODE (SUBREG_REG (x));
-
-      /* SUBREG_REG (x) is a MEM, so we cant take the offset, instead we 
-         calculate the register number as : 
-	 SUBREG_BYTE (x) / GET_MODE_SIZE (subreg_mode) */
-      if (is_set_dest)
-	push_reload (NULL_RTX, SUBREG_REG (x), (rtx*)0, &SUBREG_REG (x),
-		     find_valid_class (subreg_mode, 
-		     		SUBREG_BYTE (x) / GET_MODE_SIZE (subreg_mode)),
-		     VOIDmode, subreg_mode, 0, 0, opnum, type);
-      else
-	push_reload (SUBREG_REG (x), NULL_RTX, &SUBREG_REG (x), (rtx*)0,
-		     find_valid_class (subreg_mode,
-		     		SUBREG_BYTE (x) / GET_MODE_SIZE (subreg_mode)),
-		     subreg_mode, VOIDmode, 0, 0, opnum, type);
-    }
 
   for (copied = 0, i = GET_RTX_LENGTH (code) - 1; i >= 0; i--)
     {