diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 6efe967eb0a1..590a2c274ac1 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -568,24 +568,6 @@ config("compiler") {
       }
     }
 
-    # TODO(crbug.com/40283598): This causes binary size growth and potentially
-    # other problems.
-    # TODO(crbug.com/40284925): This isn't supported by Cronet's mainline llvm version.
-    if (default_toolchain != "//build/toolchain/cros:target" &&
-        !llvm_android_mainline) {
-      cflags += [
-        "-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" ]
-        }
-      }
-    }
-
     # TODO(crbug.com/40192287): Investigate why/if this should be needed.
     if (is_win) {
       cflags += [ "/clang:-ffp-contract=off" ]