From: Richard Henderson <rth@redhat.com>
Date: Fri, 9 Jan 2004 02:31:40 +0000 (-0800)
Subject: re PR rtl-optimization/12441 (Can't spill register bug)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=90e4e4c58d96511359fcede8e00658953ae9faaa;p=gcc.git

re PR rtl-optimization/12441 (Can't spill register bug)

        PR opt/12441
        Revert: Sat Mar 30 14:08:55 CET 2002  Jan Hubicka  <jh@suse.cz>
        * i386.c (aligned_operand): Be prepared for SUBREGed registers.
        (ix86_decompose_address): Use REG_P instead of GET_CODE (...) == REG.
        (ix86_address_cost): Be prepared for SUBREGed registers.
        (legitimate_address_p): Accept SUBREGed registers.

From-SVN: r75568
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8c0b784e7b2..208ee947d7c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2004-01-08  Richard Henderson  <rth@redhat.com>
+
+	PR opt/12441
+	Revert: Sat Mar 30 14:08:55 CET 2002  Jan Hubicka  <jh@suse.cz>
+        * i386.c (aligned_operand): Be prepared for SUBREGed registers.
+        (ix86_decompose_address): Use REG_P instead of GET_CODE (...) == REG.
+        (ix86_address_cost): Be prepared for SUBREGed registers.
+        (legitimate_address_p): Accept SUBREGed registers.
+
 2004-01-08  Kelley Cook  <kcook@gcc.gnu.org>
 
 	* Makefile.in: Rename configure.in to configure.ac
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 04ffe7ec3fc..709e6c25c35 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -4257,11 +4257,6 @@ aligned_operand (rtx op, enum machine_mode mode)
   if (! ix86_decompose_address (op, &parts))
     abort ();
 
-  if (parts.base && GET_CODE (parts.base) == SUBREG)
-    parts.base = SUBREG_REG (parts.base);
-  if (parts.index && GET_CODE (parts.index) == SUBREG)
-    parts.index = SUBREG_REG (parts.index);
-
   /* Look for some component that isn't known to be aligned.  */
   if (parts.index)
     {
@@ -5480,7 +5475,7 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
   int retval = 1;
   enum ix86_address_seg seg = SEG_DEFAULT;
 
-  if (REG_P (addr) || GET_CODE (addr) == SUBREG)
+  if (GET_CODE (addr) == REG || GET_CODE (addr) == SUBREG)
     base = addr;
   else if (GET_CODE (addr) == PLUS)
     {
@@ -5632,11 +5627,6 @@ ix86_address_cost (rtx x)
   if (!ix86_decompose_address (x, &parts))
     abort ();
 
-  if (parts.base && GET_CODE (parts.base) == SUBREG)
-    parts.base = SUBREG_REG (parts.base);
-  if (parts.index && GET_CODE (parts.index) == SUBREG)
-    parts.index = SUBREG_REG (parts.index);
-
   /* More complex memory references are better.  */
   if (parts.disp && parts.disp != const0_rtx)
     cost--;
@@ -5981,15 +5971,9 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict)
 
   if (base)
     {
-      rtx reg;
       reason_rtx = base;
 
-      if (GET_CODE (base) == SUBREG)
-	reg = SUBREG_REG (base);
-      else
-	reg = base;
-
-      if (GET_CODE (reg) != REG)
+      if (GET_CODE (base) != REG)
 	{
 	  reason = "base is not a register";
 	  goto report_error;
@@ -6001,8 +5985,8 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict)
 	  goto report_error;
 	}
 
-      if ((strict && ! REG_OK_FOR_BASE_STRICT_P (reg))
-	  || (! strict && ! REG_OK_FOR_BASE_NONSTRICT_P (reg)))
+      if ((strict && ! REG_OK_FOR_BASE_STRICT_P (base))
+	  || (! strict && ! REG_OK_FOR_BASE_NONSTRICT_P (base)))
 	{
 	  reason = "base is not valid";
 	  goto report_error;
@@ -6017,15 +6001,9 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict)
 
   if (index)
     {
-      rtx reg;
       reason_rtx = index;
 
-      if (GET_CODE (index) == SUBREG)
-	reg = SUBREG_REG (index);
-      else
-	reg = index;
-
-      if (GET_CODE (reg) != REG)
+      if (GET_CODE (index) != REG)
 	{
 	  reason = "index is not a register";
 	  goto report_error;
@@ -6037,8 +6015,8 @@ legitimate_address_p (enum machine_mode mode, rtx addr, int strict)
 	  goto report_error;
 	}
 
-      if ((strict && ! REG_OK_FOR_INDEX_STRICT_P (reg))
-	  || (! strict && ! REG_OK_FOR_INDEX_NONSTRICT_P (reg)))
+      if ((strict && ! REG_OK_FOR_INDEX_STRICT_P (index))
+	  || (! strict && ! REG_OK_FOR_INDEX_NONSTRICT_P (index)))
 	{
 	  reason = "index is not valid";
 	  goto report_error;