PR target/12070

	* calls.c (emit_library_call_value_1): Fix saving of BLKmode arguments.

	PR opt/12082
	* cfgcleanup.c (try_simplify_condjump): Avoid unreachable code warning.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@71147 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 0 deletions

diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c
index 074812d54ef..fc5be846dee 100644
--- a/gcc/cfgcleanup.c
+++ b/gcc/cfgcleanup.c
@@ -118,6 +118,8 @@ try_simplify_condjump (basic_block cbranch_block)
   basic_block jump_block, jump_dest_block, cbranch_dest_block;
   edge cbranch_jump_edge, cbranch_fallthru_edge;
   rtx cbranch_insn;
+  rtx insn, next;
+  rtx end;
 
   /* Verify that there are exactly two successors.  */
   if (!cbranch_block->succ
@@ -170,6 +172,20 @@ try_simplify_condjump (basic_block cbranch_block)
   cbranch_fallthru_edge->flags &= ~EDGE_FALLTHRU;
   update_br_prob_note (cbranch_block);
 
+  end = jump_block->end;
+  /* Deleting a block may produce unreachable code warning even when we are
+     not deleting anything live.  Supress it by moving all the line number
+     notes out of the block.  */
+  for (insn = jump_block->head; insn != NEXT_INSN (jump_block->end);
+       insn = next)
+    {
+      next = NEXT_INSN (insn);
+      if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) > 0)
+	{
+	  reorder_insns (insn, insn, end);
+	  end = insn;
+	}
+    }
   /* Delete the block with the unconditional jump, and clean up the mess.  */
   delete_block (jump_block);
   tidy_fallthru_edge (cbranch_jump_edge, cbranch_block, cbranch_dest_block);