Backed out changeset 2f5aba2e2c09 (bug 1619461) for build bustages at testBug1117235.js on a CLOSED TREE

build/moz.configure/flags.configure

@@ -25,23 +25,5 @@ add_old_configure_assignment(
 def rust_flags(compile_flags, warning_flags):
     return compile_flags + warning_flags
 
+
 set_config('MOZ_RUST_DEFAULT_FLAGS', rust_flags)
-
-
-js_option('--disable-new-pass-manager',
-          help='Use the legacy LLVM pass manager in clang builds')
-
-@depends('--enable-new-pass-manager', c_compiler, host, mozbuild_state_path)
-def new_pass_manager_flags(enabled, compiler, host, mozbuild_state_path):
-    if host.os == 'OSX':
-        # If we're using Xcode's clang, we can't trust its version number
-        mozbuild_clang_dir = os.path.join(mozbuild_state_path, 'clang', 'bin')
-        if os.path.dirname(compiler.compiler) != mozbuild_clang_dir:
-            return None
-    if enabled and compiler.version >= '9.0.0':
-        if compiler.type == 'clang':
-            return ['-fexperimental-new-pass-manager']
-        elif compiler.type == 'clang-cl':
-            return ['-Xclang', '-fexperimental-new-pass-manager']
-
-set_config('MOZ_NEW_PASS_MANAGER_FLAGS', new_pass_manager_flags)

python/mozbuild/mozbuild/frontend/context.py

@@ -566,8 +566,6 @@ class CompileFlags(TargetCompileFlags):
             ('MOZBUILD_CFLAGS', None, ('CFLAGS',)),
             ('MOZBUILD_CXXFLAGS', None, ('CXXFLAGS',)),
             ('COVERAGE', context.config.substs.get('COVERAGE_CFLAGS'), ('CXXFLAGS', 'CFLAGS')),
-            ('NEWPM', context.config.substs.get('MOZ_NEW_PASS_MANAGER_FLAGS'),
-             ('CXXFLAGS', 'CFLAGS')),
         )
 
         TargetCompileFlags.__init__(self, context)