From: Eric Botcazou <ebotcazou@adacore.com>
Date: Sat, 11 Feb 2012 00:14:08 +0000 (+0000)
Subject: sparc.c (sparc_flat_expand_prologue): Use emit_use.
X-Git-Tag: upstream/12.2.0~78047
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8c92f3e81be19ed6f544c06ee313af0cf5af107b;p=platform%2Fupstream%2Fgcc.git

sparc.c (sparc_flat_expand_prologue): Use emit_use.

	* config/sparc/sparc.c (sparc_flat_expand_prologue): Use emit_use.
	* config/sparc/sparc.md (UNSPECV_GOTO): Delete.
	(nonlocal_goto_internal): Likewise.
	(nonlocal_goto): Emit a use and an indirect jump directly.

From-SVN: r184116
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9fce971..391217a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-02-10  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* config/sparc/sparc.c (sparc_flat_expand_prologue): Use emit_use.
+	* config/sparc/sparc.md (UNSPECV_GOTO): Delete.
+	(nonlocal_goto_internal): Likewise.
+	(nonlocal_goto): Emit a use and an indirect jump directly.
+
 2012-02-10  Andrew MacLeod  <amacleod@redhat.com>
 
 	PR c/52190
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 40db03f..134843d 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -5131,7 +5131,7 @@ sparc_flat_expand_prologue (void)
 
 	  /* Prevent this instruction from ever being considered dead,
 	     even if this function has no epilogue.  */
-	  emit_insn (gen_rtx_USE (VOIDmode, i7));
+	  emit_use (i7);
 	}
     }
 
diff --git a/gcc/config/sparc/sparc.md b/gcc/config/sparc/sparc.md
index f67ee83..f70acd3 100644
--- a/gcc/config/sparc/sparc.md
+++ b/gcc/config/sparc/sparc.md
@@ -99,7 +99,6 @@
 (define_constants
   [(UNSPECV_BLOCKAGE		0)
    (UNSPECV_FLUSHW		1)
-   (UNSPECV_GOTO		2)
    (UNSPECV_FLUSH		4)
    (UNSPECV_SAVEW		6)
    (UNSPECV_CAS			8)
@@ -6524,6 +6523,7 @@
    (match_operand 3 "memory_operand" "")]
   ""
 {
+  rtx i7 = gen_rtx_REG (Pmode, RETURN_ADDR_REGNUM);
   rtx r_label = copy_to_reg (operands[1]);
   rtx r_sp = adjust_address_nv (operands[2], Pmode, 0);
   rtx r_fp = operands[3];
@@ -6540,44 +6540,19 @@
   /* Restore frame pointer for containing function.  */
   emit_move_insn (hard_frame_pointer_rtx, r_fp);
   emit_stack_restore (SAVE_NONLOCAL, r_sp);
+  emit_move_insn (i7, r_i7);
 
   /* USE of hard_frame_pointer_rtx added for consistency;
      not clear if really needed.  */
   emit_use (hard_frame_pointer_rtx);
   emit_use (stack_pointer_rtx);
+  emit_use (i7);
 
-  /* We need to smuggle the load of %i7 as it is a fixed register.  */
-  emit_jump_insn (gen_nonlocal_goto_internal (r_label, r_i7));
+  emit_jump_insn (gen_indirect_jump (r_label));
   emit_barrier ();
   DONE;
 })
 
-(define_insn "nonlocal_goto_internal"
-  [(unspec_volatile [(match_operand 0 "register_operand" "r")
-                     (match_operand 1 "memory_operand" "m")] UNSPECV_GOTO)]
-  "GET_MODE (operands[0]) == Pmode && GET_MODE (operands[1]) == Pmode"
-{
-  if (flag_delayed_branch)
-    {
-      if (TARGET_ARCH64)
-	return "jmp\t%0\n\t ldx\t%1, %%i7";
-      else
-	return "jmp\t%0\n\t ld\t%1, %%i7";
-    }
-  else
-    {
-      if (TARGET_ARCH64)
-	return "ldx\t%1, %%i7\n\tjmp\t%0\n\t nop";
-      else
-	return "ld\t%1, %%i7\n\tjmp\t%0\n\t nop";
-    }
-}
-  [(set (attr "type") (const_string "multi"))
-   (set (attr "length")
-	(if_then_else (eq_attr "delayed_branch" "true")
-		      (const_int 2)
-		      (const_int 3)))])
-
 (define_expand "builtin_setjmp_receiver"
   [(label_ref (match_operand 0 "" ""))]
   "flag_pic"