From: Kaz Kojima <kkojima@gcc.gnu.org>
Date: Tue, 2 Nov 2010 00:12:14 +0000 (+0000)
Subject: sh.c (TARGET_DELEGITIMIZE_ADDRESS): Redefine.
X-Git-Tag: releases/gcc-4.6.0~3036
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=90833f7f2f047fec74c5db971594b525efd8a21b;p=thirdparty%2Fgcc.git

sh.c (TARGET_DELEGITIMIZE_ADDRESS): Redefine.

	* config/sh/sh.c (TARGET_DELEGITIMIZE_ADDRESS): Redefine.
	(sh_delegitimize_address): New function.

From-SVN: r166157
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1ca5b0be2461..e0e3e22653c3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-11-01  Kaz Kojima  <kkojima@gcc.gnu.org>
+
+	* config/sh/sh.c (TARGET_DELEGITIMIZE_ADDRESS): Redefine.
+	(sh_delegitimize_address): New function.
+
 2010-11-01  Joseph Myers  <joseph@codesourcery.com>
 
 	* config/alpha/alpha.h (WORD_SWITCH_TAKES_ARG): Remove.
diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c
index 54e7be849470..a1eec59153e3 100644
--- a/gcc/config/sh/sh.c
+++ b/gcc/config/sh/sh.c
@@ -255,6 +255,7 @@ static int sh_pr_n_sets (void);
 static rtx sh_allocate_initial_value (rtx);
 static bool sh_legitimate_address_p (enum machine_mode, rtx, bool);
 static rtx sh_legitimize_address (rtx, rtx, enum machine_mode);
+static rtx sh_delegitimize_address (rtx);
 static int shmedia_target_regs_stack_space (HARD_REG_SET *);
 static int shmedia_reserve_space_for_target_registers_p (int, HARD_REG_SET *);
 static int shmedia_target_regs_stack_adjust (HARD_REG_SET *);
@@ -459,6 +460,9 @@ static const struct default_options sh_option_optimization_table[] =
 #undef TARGET_SCHED_INIT
 #define TARGET_SCHED_INIT sh_md_init
 
+#undef TARGET_DELEGITIMIZE_ADDRESS
+#define TARGET_DELEGITIMIZE_ADDRESS sh_delegitimize_address
+
 #undef TARGET_LEGITIMIZE_ADDRESS
 #define TARGET_LEGITIMIZE_ADDRESS sh_legitimize_address
 
@@ -9873,6 +9877,45 @@ sh_legitimize_reload_address (rtx *p, enum machine_mode mode, int opnum,
   return true;
 }
 
+/* In the name of slightly smaller debug output, and to cater to
+   general assembler lossage, recognize various UNSPEC sequences
+   and turn them back into a direct symbol reference.  */
+
+static rtx
+sh_delegitimize_address (rtx orig_x)
+{
+  rtx x, y;
+
+  orig_x = delegitimize_mem_from_attrs (orig_x);
+
+  x = orig_x;
+  if (MEM_P (x))
+    x = XEXP (x, 0);
+  if (GET_CODE (x) == CONST)
+    {
+      y = XEXP (x, 0);
+      if (GET_CODE (y) == UNSPEC)
+	{
+	  if (XINT (y, 1) == UNSPEC_GOT
+	      || XINT (y, 1) == UNSPEC_GOTOFF)
+	    return XVECEXP (y, 0, 0);
+	  else if (TARGET_SHMEDIA
+		   && (XINT (y, 1) == UNSPEC_EXTRACT_S16
+		       || XINT (y, 1) == UNSPEC_EXTRACT_U16))
+	    {
+	      rtx offset = XVECEXP (y, 0, 1);
+
+	      x = gen_rtx_PLUS (Pmode, XVECEXP (y, 0, 0), offset);
+	      if (MEM_P (orig_x))
+		x = replace_equiv_address_nv (orig_x, x);
+	      return x;
+	    }
+	}
+    }
+
+  return orig_x;
+}
+
 /* Mark the use of a constant in the literal table. If the constant
    has multiple labels, make it unique.  */
 static rtx