[turbofan] Better handling of empty type in simplified lowering.

test/mjsunit/mjsunit.status

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 233 matching lines @@
 
   # BUG(v8:4458). TODO(mvstanton): reenable the test once --vector-stores is
   # prermanently enabled.
   'call-counts': [SKIP],
 
   # Slow tests.
   'copy-on-write-assert': [PASS, SLOW],
   'debug-scopes': [PASS, SLOW],
   'numops-fuzz-part*': [PASS, ['mode == debug', SLOW]],
   'readonly': [PASS, SLOW],
-  'regress/regress-1200351': [PASS, ['mode == debug', SLOW]],
+  'regress/regress-1200351': [PASS, SLOW],
   'regress/regress-crbug-474297': [PASS, ['mode == debug', SLOW]],
   'es6/tail-call-megatest*': [PASS, SLOW, FAST_VARIANTS, ['tsan', SKIP]],
 
   # TODO(titzer): ASM->WASM tests on these platforms
   'wasm/asm-wasm': [PASS, ['arch in [arm, arm64, mips, mipsel, mips64, mips64el]', SKIP]],
   # TODO(branelson): Figure out why ignition + asm-wasm-stdlib fails.
   'wasm/asm-wasm-stdlib': [PASS, ['arch in [arm, arm64, mips, mipsel, mips64, mips64el] or ignition == True', SKIP]],
   'wasm/asm-wasm-literals': [PASS, ['arch in [arm, arm64, mips, mipsel, mips64, mips64el] or ignition == True', SKIP]],
   'wasm/asm-wasm-copy': [PASS, ['arch in [arm, arm64, mips, mipsel, mips64, mips64el]', SKIP]],
   'wasm/asm-wasm-deopt': [PASS, ['arch in [arm, arm64, mips, mipsel, mips64, mips64el]', SKIP]],
@@ skipping 142 matching lines @@
   'debug-referenced-by': [PASS, NO_VARIANTS],
 
   # BUG(v8:4779): Crashes flakily with stress mode on arm64.
   'array-splice': [PASS, SLOW, ['arch == arm64', FAST_VARIANTS]],
 
   # BUG(v8:5053).
   'wasm/embenchen/fasta': [PASS, FAST_VARIANTS],
 }],  # 'gc_stress == True'
 
 ##############################################################################
-['no_i18n == True and mode == debug', {
-  # Tests too slow for no18n debug.
-  'regress/regress-1200351': [SKIP],
-}],  # 'no_i18n == True and mode == debug'
-
-##############################################################################
 ['byteorder == big', {
   # Emscripten requires little-endian, skip all tests on big endian platforms.
   'asm/embenchen/*': [SKIP],
   'asm/poppler/*': [SKIP],
   'asm/sqlite3/*': [SKIP],
   # TODO(mips-team): Fix Wasm for big-endian.
   'wasm/*': [SKIP],
 }],  # 'byteorder == big'
 
 ##############################################################################
@@ skipping 450 matching lines @@
 ##############################################################################
 ['gcov_coverage', {
   # Tests taking too long.
   'array-functions-prototype-misc': [SKIP],
 
   # Stack overflow.
   'big-array-literal': [SKIP],
 }],  # 'gcov_coverage'
 
 ]