--- ./build/config/compiler/BUILD.gn.orig
+++ ./build/config/compiler/BUILD.gn
@@ -624,14 +624,14 @@
     if (default_toolchain != "//build/toolchain/cros:target" &&
         !llvm_android_mainline) {
       cflags += [
-        "-mllvm",
-        "-split-threshold-for-reg-with-hint=0",
+        #"-mllvm",
+        #"-split-threshold-for-reg-with-hint=0",
       ]
       if (use_thin_lto && is_a_target_toolchain) {
         if (is_win) {
           ldflags += [ "-mllvm:-split-threshold-for-reg-with-hint=0" ]
         } else {
-          ldflags += [ "-Wl,-mllvm,-split-threshold-for-reg-with-hint=0" ]
+          #ldflags += [ "-Wl,-mllvm,-split-threshold-for-reg-with-hint=0" ]
         }
       }
     }
@@ -805,7 +805,7 @@
 
       # We only use one version of LLVM within a build so there's no need to
       # upgrade debug info, which can be expensive since it runs the verifier.
-      ldflags += [ "-Wl,-mllvm,-disable-auto-upgrade-debug-info" ]
+      #ldflags += [ "-Wl,-mllvm,-disable-auto-upgrade-debug-info" ]
     }
 
     # TODO(https://crbug.com/1211155): investigate why this isn't effective on
@@ -1191,8 +1191,8 @@
     } else if (current_cpu == "arm64") {
       if (is_clang && !is_android && !is_nacl && !is_fuchsia &&
           !(is_chromeos_lacros && is_chromeos_device)) {
-        cflags += [ "--target=aarch64-linux-gnu" ]
-        ldflags += [ "--target=aarch64-linux-gnu" ]
+        cflags += [ "--target=aarch64-alpine-linux-musl" ]
+        ldflags += [ "--target=aarch64-alpine-linux-musl" ]
       }
     } else if (current_cpu == "mipsel" && !is_nacl) {
       ldflags += [ "-Wl,--hash-style=sysv" ]