From: Uros Bizjak <ubizjak@gmail.com>
Date: Mon, 23 Jul 2012 06:50:45 +0000 (+0200)
Subject: i386.c (ix86_avoid_lea_for_addr): Prevent zero-extended addresses here ...
X-Git-Tag: releases/gcc-4.8.0~4334
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=78aaa514d54c9257dec1869e01aed679b983f46d;p=thirdparty%2Fgcc.git

i386.c (ix86_avoid_lea_for_addr): Prevent zero-extended addresses here ...

	* config/i386/i386.c (ix86_avoid_lea_for_addr): Prevent zero-extended addresses here ...
	(ix86_avoid_lea_for_add): ... not here.

From-SVN: r189768
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ede99f6c68e2..2b04ab700c46 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -24,7 +24,7 @@
 	* config/i386/i386.c (ix86_decompose_address): Allow SImode subreg
 	of an address.
 	(ix86_print_operand_address): Handle SImode subreg of an address.
-	(ix86_avoid_lea_for_add): Reject zero-extended addresses for now.
+	(ix86_avoid_lea_for_addr): Reject zero-extended addresses for now.
 
 2012-07-22  Hans-Peter Nilsson  <hp@axis.com>
 
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 5770ed26aa2b..06ef5dba3b13 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -16864,11 +16864,6 @@ ix86_avoid_lea_for_add (rtx insn, rtx operands[])
   unsigned int regno1 = true_regnum (operands[1]);
   unsigned int regno2 = true_regnum (operands[2]);
 
-  /* FIXME: Handle zero-extended addresses.  */
-  if (GET_CODE (operands[1]) == ZERO_EXTEND
-      || GET_CODE (operands[1]) == AND)
-    return false;
-
   /* Check if we need to optimize.  */
   if (!TARGET_OPT_AGU || optimize_function_for_size_p (cfun))
     return false;
@@ -16921,6 +16916,11 @@ ix86_avoid_lea_for_addr (rtx insn, rtx operands[])
   struct ix86_address parts;
   int ok;
 
+  /* FIXME: Handle zero-extended addresses.  */
+  if (GET_CODE (operands[1]) == ZERO_EXTEND
+      || GET_CODE (operands[1]) == AND)
+    return false;
+
   /* Check we need to optimize.  */
   if (!TARGET_OPT_AGU || optimize_function_for_size_p (cfun))
     return false;
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 7f5814dfeec7..f559ff215361 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -5450,6 +5450,30 @@
   DONE;
 })
 
+(define_insn_and_split "*lea<mode>"
+  [(set (match_operand:SWI48 0 "register_operand" "=r")
+	(match_operand:SWI48 1 "lea_address_operand" "p"))]
+  ""
+{
+  rtx addr = operands[1];
+
+  if (GET_CODE (addr) == SUBREG)
+    return "lea{l}\t{%E1, %0|%0, %E1}";
+  else if (GET_CODE (addr) == ZERO_EXTEND
+	   || GET_CODE (addr) == AND)
+    return "lea{l}\t{%E1, %k0|%k0, %E1}";
+  else 
+    return "lea{<imodesuffix>}\t{%E1, %0|%0, %E1}";
+}
+  "reload_completed && ix86_avoid_lea_for_addr (insn, operands)"
+  [(const_int 0)]
+{
+  ix86_split_lea_for_addr (operands, <MODE>mode);
+  DONE;
+}
+  [(set_attr "type" "lea")
+   (set_attr "mode" "<MODE>")])
+
 ;; Add instructions
 
 (define_expand "add<mode>3"
@@ -5508,30 +5532,6 @@
   [(set_attr "type" "alu")
    (set_attr "mode" "QI")])
 
-(define_insn_and_split "*lea<mode>"
-  [(set (match_operand:SWI48 0 "register_operand" "=r")
-	(match_operand:SWI48 1 "lea_address_operand" "p"))]
-  ""
-{
-  rtx addr = operands[1];
-
-  if (GET_CODE (addr) == SUBREG)
-    return "lea{l}\t{%E1, %0|%0, %E1}";
-  else if (GET_CODE (addr) == ZERO_EXTEND
-	   || GET_CODE (addr) == AND)
-    return "lea{l}\t{%E1, %k0|%k0, %E1}";
-  else 
-    return "lea{<imodesuffix>}\t{%E1, %0|%0, %E1}";
-}
-  "reload_completed && ix86_avoid_lea_for_addr (insn, operands)"
-  [(const_int 0)]
-{
-  ix86_split_lea_for_addr (operands, <MODE>mode);
-  DONE;
-}
-  [(set_attr "type" "lea")
-   (set_attr "mode" "<MODE>")])
-
 (define_insn "*add<mode>_1"
   [(set (match_operand:SWI48 0 "nonimmediate_operand" "=r,rm,r,r")
 	(plus:SWI48