Merge branch 'bg/compiler-cover-and-clean' into dev

* bg/compiler-cover-and-clean:
  v3_life: Remove clause that cannot match in match_fail/3
  v3_life tests: Cover exception handling code in v3_life:function/1
  beam_type: Remove redundant clause
  v3_core tests: Cover make_bool_switch_guard/5
  v3_core tests: Cover handling of pattern aliases
  v3_core: Remove a clause in is_simple/1 that cannot match
  v3_core: Remove unused support for generating compilation errors
  Remove stray support for the put_literal/2 instruction
  Remove stray support for the bs_bits_to_bytes2/2 instruction
  Remove the bs_bits_to_bytes/3 instruction
  Cover handling of 'math' BIFs
  beam_bool: Remove a clause in live_regs/1 that cannot match
  beam_bool: Cover handling of bs_context_to_binary in initialized_regs/2
  beam_bool: Remove a clause in initialized_regs/2 that cannot match
  beam_block: Remove a clause that will never be executed
  erts: Stop supporting non-literal empty tuples
  compile: Remove code that is only executed on Solaris
  Do not cover-analyze core_scan
  core_SUITE_data: Don't ignore *.core files in this directory

OTP-8636 bg/compiler-cover-and-clean

1 files changed, 5 insertions, 11 deletions

diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl
index ac249e6672..761d4ffec0 100644
--- a/lib/compiler/src/beam_utils.erl
+++ b/lib/compiler/src/beam_utils.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2007-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2007-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 %% Purpose : Common utilities used by several optimization passes.
@@ -424,12 +424,6 @@ check_liveness(R, [{bs_add,{f,0},Ss,D}|Is], St) ->
 	false when R =:= D -> {killed,St};
 	false -> check_liveness(R, Is, St)
     end;
-check_liveness(R, [{bs_bits_to_bytes2,Src,Dst}|Is], St) ->
-    case R of
-	Src -> {used,St};
-	Dst -> {killed,St};
-	_ -> check_liveness(R, Is, St)
-    end;
 check_liveness(R, [{bs_put_binary,{f,0},Sz,_,_,Src}|Is], St) ->
     case member(R, [Sz,Src]) of
 	true -> {used,St};