From: Trevor Smigiel <Trevor_Smigiel@playstation.sony.com>
Date: Mon, 27 Apr 2009 19:33:20 +0000 (+0000)
Subject: spu.c (spu_machine_dependent_reorg): Make sure branch label on hint instruction is... 
X-Git-Tag: releases/gcc-4.5.0~6103
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6e37f6d40e022a814b1a73fa1da5ec60435a507b;p=thirdparty%2Fgcc.git

spu.c (spu_machine_dependent_reorg): Make sure branch label on hint instruction is correct.

	* spu.c (spu_machine_dependent_reorg): Make sure branch label on hint
	instruction is correct.

From-SVN: r146852
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 013c0fcea4e2..b8d331be1e2a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-04-27  Trevor Smigiel <trevor_smigiel@playstation.sony.com>
+
+	* spu.c (spu_machine_dependent_reorg): Make sure branch label on hint
+	instruction is correct.
+
+
 2009-04-27  Trevor Smigiel <trevor_smigiel@playstation.sony.com>
 
 	Allow non-constant arguments to conversion intrinsics.
diff --git a/gcc/config/spu/spu.c b/gcc/config/spu/spu.c
index 56abdf8deb38..20d769e9e16c 100644
--- a/gcc/config/spu/spu.c
+++ b/gcc/config/spu/spu.c
@@ -2764,6 +2764,25 @@ spu_machine_dependent_reorg (void)
 
   pad_bb ();
 
+  for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
+    if (NONJUMP_INSN_P (insn) && INSN_CODE (insn) == CODE_FOR_hbr)
+      {
+	/* Adjust the LABEL_REF in a hint when we have inserted a nop
+	   between its branch label and the branch .  We don't move the
+	   label because GCC expects it at the beginning of the block. */
+	rtx unspec = SET_SRC (XVECEXP (PATTERN (insn), 0, 0));
+	rtx label_ref = XVECEXP (unspec, 0, 0);
+	rtx label = XEXP (label_ref, 0);
+	rtx branch;
+	int offset = 0;
+	for (branch = NEXT_INSN (label);
+	     !JUMP_P (branch) && !CALL_P (branch);
+	     branch = NEXT_INSN (branch))
+	  if (NONJUMP_INSN_P (branch))
+	    offset += get_attr_length (branch);
+	if (offset > 0)
+	  XVECEXP (unspec, 0, 0) = plus_constant (label_ref, offset);
+      }
 
   if (spu_flag_var_tracking)
     {