Add the upstream spec testsuite as a submodule

Run the upstream tests by default, except for a large list of them that
do not successfully run. Remove the local version of those that do
successfully run where the local version is entirely subsumed by the
upstream version.

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "third_party/googletest"]
 	path = third_party/googletest
 	url = https://github.com/google/googletest.git
+[submodule "test/spec/testsuite"]
+	path = test/spec/testsuite
+	url = https://github.com/WebAssembly/testsuite.git

scripts/test/shared.py

@@ -386,7 +386,7 @@ def get_tests(test_dir, extensions=[], recursive=False):
 if options.spec_tests:
     options.spec_tests = [os.path.abspath(t) for t in options.spec_tests]
 else:
-    options.spec_tests = get_tests(get_test_dir('spec'), ['.wast'])
+    options.spec_tests = get_tests(get_test_dir('spec'), ['.wast'], recursive=True)
 
 os.chdir(options.out_dir)
 
@@ -411,12 +411,99 @@ def get_tests(test_dir, extensions=[], recursive=False):
     # Test invalid
     'elem.wast',
 ]
+SPEC_TESTSUITE_TESTS_TO_SKIP = [
+    'address.wast',
+    'align.wast',
+    'binary-leb128.wast',
+    'binary.wast',
+    'block.wast',
+    'br_table.wast',
+    'bulk.wast',
+    'comments.wast',
+    'const.wast',
+    'conversions.wast',
+    'data.wast',
+    'elem.wast',
+    'f32.wast',
+    'f64.wast',
+    'fac.wast',
+    'float_exprs.wast',
+    'float_misc.wast',
+    'func.wast',
+    'global.wast',
+    'if.wast',
+    'imports.wast',
+    'linking.wast',
+    'loop.wast',
+    'memory.wast',
+    'annotations.wast',
+    'id.wast',
+    'throw.wast',
+    'try_catch.wast',
+    'tag.wast',
+    'throw_ref.wast',
+    'try_table.wast',
+    'br_on_non_null.wast',
+    'br_on_null.wast',
+    'local_init.wast',
+    'ref_func.wast',
+    'ref_is_null.wast',
+    'ref_null.wast',
+    'return_call_indirect.wast',
+    'select.wast',
+    'table.wast',
+    'type-equivalence.wast',
+    'unreached-invalid.wast',
+    'array.wast',
+    'array_init_elem.wast',
+    'br_if.wast',
+    'br_on_cast.wast',
+    'br_on_cast_fail.wast',
+    'extern.wast',
+    'i31.wast',
+    'ref_cast.wast',
+    'ref_test.wast',
+    'struct.wast',
+    'type-rec.wast',
+    'type-subtyping.wast',
+    'call_indirect.wast',
+    'memory64.wast',
+    'table_fill.wast',
+    'table_get.wast',
+    'table_grow.wast',
+    'table_init.wast',
+    'table_set.wast',
+    'imports0.wast',
+    'imports2.wast',
+    'imports3.wast',
+    'linking0.wast',
+    'linking3.wast',
+    'i16x8_relaxed_q15mulr_s.wast',
+    'i32x4_relaxed_trunc.wast',
+    'i8x16_relaxed_swizzle.wast',
+    'relaxed_dot_product.wast',
+    'relaxed_laneselect.wast',
+    'relaxed_madd_nmadd.wast',
+    'relaxed_min_max.wast',
+    'simd_address.wast',
+    'simd_boolean.wast',
+    'simd_const.wast',
+    'simd_conversions.wast',
+    'simd_f32x4.wast',
+    'simd_f32x4_arith.wast',
+    'simd_f32x4_rounding.wast',
+    'simd_f64x2.wast',
+    'simd_f64x2_arith.wast',
+    'simd_f64x2_rounding.wast',
+    'token.wast',
+]
 options.spec_tests = [t for t in options.spec_tests if os.path.basename(t) not
-                      in SPEC_TESTS_TO_SKIP]
-
+                      in (SPEC_TESTSUITE_TESTS_TO_SKIP if 'testsuite' in t
+                          else SPEC_TESTS_TO_SKIP)]
 
 # check utilities
 
+
 def binary_format_check(wast, verify_final_result=True, wasm_as_args=['-g'],
                         binary_suffix='.fromBinary'):
     # checks we can convert the wast to binary and back