Change wasm-ld target

ll/args.bzl

@@ -259,6 +259,7 @@ def compile_object_args(
 
     if ctx.attr.compilation_mode == "wasm":
         args.add("--target=wasm32")
+        args.add("-emit-llvm-bc")
 
     # Write compilation database.
     args.add("-Xarch_host")

ll/attributes.bzl

@@ -313,8 +313,9 @@ LL_TOOLCHAIN_ATTRS = {
     "wasm_linker": attr.label(
         doc = "The linker for WebAssembly",
         executable = True,
+        allow_single_file = True,
         cfg = transition_to_bootstrap,
-        default = "@llvm-project//llvm:wasm-ld",
+        default = "@llvm-project//lld:wasm-ld",
     ),
     "builtin_includes": attr.label(
         doc = "Clang's built-in header files.",

ll/environment.bzl

@@ -20,7 +20,7 @@ def compile_object_environment(ctx):
     config = ctx.attr.toolchain_configuration[BuildSettingInfo].value
     toolchain = ctx.toolchains["//ll:toolchain_type"]
 
-    if config in ["cpp", "omp_cpu", "wasm"]:
+    if config in ["cpp", "omp_cpu"]:
         return {
             "LINK": toolchain.bitcode_linker.path,
             "LLD": toolchain.linker.path,

ll/toolchain.bzl

@@ -30,6 +30,7 @@ def _ll_toolchain_impl(ctx):
             linker = lld_alias,
             linker_executable = ctx.executable.linker,
             linker_wrapper = ctx.executable.linker_wrapper,
+            wasm_linker = ctx.executable.wasm_linker,
             address_sanitizer = ctx.files.address_sanitizer,
             leak_sanitizer = ctx.files.leak_sanitizer,
             memory_sanitizer = ctx.files.memory_sanitizer,