Temporarily revert r151609, which enabled a new warning for LLVM and

Clang builds. The detection logic for compilers that support the warning
isn't working. Rafael is going to investigate it, but didn't want people
to have to wade through build spam until then.

llvm-svn: 151649

9 files changed, 12 insertions, 30 deletions

diff --git a/llvm/Makefile.config.in b/llvm/Makefile.config.in
index 7b9af41..b565bb4 100644
--- a/llvm/Makefile.config.in
+++ b/llvm/Makefile.config.in
@@ -337,8 +337,6 @@ BINUTILS_INCDIR := @BINUTILS_INCDIR@
 NO_MISSING_FIELD_INITIALIZERS = @NO_MISSING_FIELD_INITIALIZERS@
 # -Wno-variadic-macros
 NO_VARIADIC_MACROS = @NO_VARIADIC_MACROS@
-# -Wcovered-switch-default
-COVERED_SWITCH_DEFAULT = @COVERED_SWITCH_DEFAULT@
 
 # Was polly found in tools/polly?
 LLVM_HAS_POLLY = @LLVM_HAS_POLLY@
diff --git a/llvm/Makefile.rules b/llvm/Makefile.rules
index a56f26e..a1edb6b 100644
--- a/llvm/Makefile.rules
+++ b/llvm/Makefile.rules
@@ -650,7 +650,7 @@ ifndef NO_PEDANTIC
 CompileCommonOpts += -pedantic -Wno-long-long
 endif
 CompileCommonOpts += -Wall -W -Wno-unused-parameter -Wwrite-strings \
-                     $(EXTRA_OPTIONS) $(COVERED_SWITCH_DEFAULT)
+                     $(EXTRA_OPTIONS)
 # Enable cast-qual for C++; the workaround is to use const_cast.
 CXX.Flags += -Wcast-qual
 
diff --git a/llvm/autoconf/configure.ac b/llvm/autoconf/configure.ac
index b28508e..3a86531 100644
--- a/llvm/autoconf/configure.ac
+++ b/llvm/autoconf/configure.ac
@@ -1115,8 +1115,7 @@ dnl Check optional compiler flags.
 AC_MSG_CHECKING([optional compiler flags])
 CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros])
 CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers])
-CXX_FLAG_CHECK(COVERED_SWITCH_DEFAULT, [-Wcovered-switch-default])
-AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT])
+AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS])
 
 dnl===-----------------------------------------------------------------------===
 dnl===
diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index afe4347..496e8b3f 100644
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -182,10 +182,6 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
     if (LLVM_ENABLE_PEDANTIC)
       add_llvm_definitions( -pedantic -Wno-long-long )
     endif (LLVM_ENABLE_PEDANTIC)
-    check_cxx_compiler_flag("-Wcovered-switch-default" SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG)
-    if( SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG )
-      add_llvm_definitions( -Wcovered-switch-default )
-    endif()
   endif (LLVM_ENABLE_WARNINGS)
   if (LLVM_ENABLE_WERROR)
     add_llvm_definitions( -Werror )
diff --git a/llvm/configure b/llvm/configure
index 8489728..8534760 100755
--- a/llvm/configure
+++ b/llvm/configure
@@ -765,7 +765,6 @@ CONVENIENCE_LTDL_FALSE
 LIBADD_DL
 NO_VARIADIC_MACROS
 NO_MISSING_FIELD_INITIALIZERS
-COVERED_SWITCH_DEFAULT
 USE_UDIS86
 USE_OPROFILE
 HAVE_PTHREAD
@@ -10464,7 +10463,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10467 "configure"
+#line 10466 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12223,10 +12222,8 @@ NO_VARIADIC_MACROS=`$CXX -Wno-variadic-macros -fsyntax-only -xc /dev/null 2>/dev
 
 NO_MISSING_FIELD_INITIALIZERS=`$CXX -Wno-missing-field-initializers -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-missing-field-initializers`
 
-COVERED_SWITCH_DEFAULT=`$CXX -Wcovered-switch-default -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wcovered-switch-default`
-
-{ echo "$as_me:$LINENO: result: $NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT" >&5
-echo "${ECHO_T}$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT" >&6; }
+{ echo "$as_me:$LINENO: result: $NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS" >&5
+echo "${ECHO_T}$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS" >&6; }
 
 
 
@@ -21977,7 +21974,6 @@ CONVENIENCE_LTDL_FALSE!$CONVENIENCE_LTDL_FALSE$ac_delim
 LIBADD_DL!$LIBADD_DL$ac_delim
 NO_VARIADIC_MACROS!$NO_VARIADIC_MACROS$ac_delim
 NO_MISSING_FIELD_INITIALIZERS!$NO_MISSING_FIELD_INITIALIZERS$ac_delim
-COVERED_SWITCH_DEFAULT!$COVERED_SWITCH_DEFAULT$ac_delim
 USE_UDIS86!$USE_UDIS86$ac_delim
 USE_OPROFILE!$USE_OPROFILE$ac_delim
 HAVE_PTHREAD!$HAVE_PTHREAD$ac_delim
@@ -22005,7 +22001,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 92; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 91; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
diff --git a/llvm/projects/sample/Makefile.llvm.config.in b/llvm/projects/sample/Makefile.llvm.config.in
index 9e0c34c..a53e7b1 100644
--- a/llvm/projects/sample/Makefile.llvm.config.in
+++ b/llvm/projects/sample/Makefile.llvm.config.in
@@ -301,8 +301,6 @@ BINUTILS_INCDIR := @BINUTILS_INCDIR@
 NO_MISSING_FIELD_INITIALIZERS = @NO_MISSING_FIELD_INITIALIZERS@
 # -Wno-variadic-macros
 NO_VARIADIC_MACROS = @NO_VARIADIC_MACROS@
-# -Wcovered-switch-default
-COVERED_SWITCH_DEFAULT = @COVERED_SWITCH_DEFAULT@
 
 # Was polly found in tools/polly?
 LLVM_HAS_POLLY = @LLVM_HAS_POLLY@
diff --git a/llvm/projects/sample/Makefile.llvm.rules b/llvm/projects/sample/Makefile.llvm.rules
index 7467d84..f496bd4 100644
--- a/llvm/projects/sample/Makefile.llvm.rules
+++ b/llvm/projects/sample/Makefile.llvm.rules
@@ -571,7 +571,7 @@ ifndef NO_PEDANTIC
 CompileCommonOpts += -pedantic -Wno-long-long
 endif
 CompileCommonOpts += -Wall -W -Wno-unused-parameter -Wwrite-strings \
-                     $(EXTRA_OPTIONS) $(COVERED_SWITCH_DEFAULT)
+                     $(EXTRA_OPTIONS)
 # Enable cast-qual for C++; the workaround is to use const_cast.
 CXX.Flags += -Wcast-qual
 
diff --git a/llvm/projects/sample/autoconf/configure.ac b/llvm/projects/sample/autoconf/configure.ac
index a1110ec..1caff511 100644
--- a/llvm/projects/sample/autoconf/configure.ac
+++ b/llvm/projects/sample/autoconf/configure.ac
@@ -1019,8 +1019,7 @@ dnl Check optional compiler flags.
 AC_MSG_CHECKING([optional compiler flags])
 CXX_FLAG_CHECK(NO_VARIADIC_MACROS, [-Wno-variadic-macros])
 CXX_FLAG_CHECK(NO_MISSING_FIELD_INITIALIZERS, [-Wno-missing-field-initializers])
-CXX_FLAG_CHECK(COVERED_SWITCH_DEFAULT, [-Wcovered-switch-default])
-AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT])
+AC_MSG_RESULT([$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS])
 
 dnl===-----------------------------------------------------------------------===
 dnl===
diff --git a/llvm/projects/sample/configure b/llvm/projects/sample/configure
index 052a7f2..dab1dc5 100755
--- a/llvm/projects/sample/configure
+++ b/llvm/projects/sample/configure
@@ -762,7 +762,6 @@ CONVENIENCE_LTDL_FALSE
 LIBADD_DL
 NO_VARIADIC_MACROS
 NO_MISSING_FIELD_INITIALIZERS
-COVERED_SWITCH_DEFAULT
 USE_UDIS86
 USE_OPROFILE
 HAVE_PTHREAD
@@ -10366,7 +10365,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10369 "configure"
+#line 10368 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12125,10 +12124,8 @@ NO_VARIADIC_MACROS=`$CXX -Wno-variadic-macros -fsyntax-only -xc /dev/null 2>/dev
 
 NO_MISSING_FIELD_INITIALIZERS=`$CXX -Wno-missing-field-initializers -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wno-missing-field-initializers`
 
-COVERED_SWITCH_DEFAULT=`$CXX -Wcovered-switch-default -fsyntax-only -xc /dev/null 2>/dev/null && echo -Wcovered-switch-default`
-
-{ echo "$as_me:$LINENO: result: $NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT" >&5
-echo "${ECHO_T}$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS $COVERED_SWITCH_DEFAULT" >&6; }
+{ echo "$as_me:$LINENO: result: $NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS" >&5
+echo "${ECHO_T}$NO_VARIADIC_MACROS $NO_MISSING_FIELD_INITIALIZERS" >&6; }
 
 
 
@@ -21819,7 +21816,6 @@ CONVENIENCE_LTDL_FALSE!$CONVENIENCE_LTDL_FALSE$ac_delim
 LIBADD_DL!$LIBADD_DL$ac_delim
 NO_VARIADIC_MACROS!$NO_VARIADIC_MACROS$ac_delim
 NO_MISSING_FIELD_INITIALIZERS!$NO_MISSING_FIELD_INITIALIZERS$ac_delim
-COVERED_SWITCH_DEFAULT!$COVERED_SWITCH_DEFAULT$ac_delim
 USE_UDIS86!$USE_UDIS86$ac_delim
 USE_OPROFILE!$USE_OPROFILE$ac_delim
 HAVE_PTHREAD!$HAVE_PTHREAD$ac_delim
@@ -21847,7 +21843,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 91; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 90; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5