diff --git a/cc/config/global.go b/cc/config/global.go
index 892a86c7e..2ca9df9a1 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -174,9 +174,6 @@ var (
 		"-Werror=format-security",
 		"-nostdlibinc",
 
-		// Enable MLGO for register allocation.
-		"-mllvm -regalloc-enable-advisor=release",
-
 		// Emit additional debug info for AutoFDO
 		"-fdebug-info-for-profiling",
 	}
@@ -205,8 +202,6 @@ var (
 		"-Wl,--exclude-libs,libgcc_stripped.a",
 		"-Wl,--exclude-libs,libunwind_llvm.a",
 		"-Wl,--exclude-libs,libunwind.a",
-		// Enable MLGO for register allocation.
-		"-Wl,-mllvm,-regalloc-enable-advisor=release",
 	}
 
 	deviceGlobalLldflags = append(append(deviceGlobalLdflags, commonGlobalLldflags...),
diff --git a/cc/lto.go b/cc/lto.go
index 20e4f2465..fb3b485b6 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -147,10 +147,15 @@ func (lto *lto) flags(ctx BaseModuleContext, flags Flags) Flags {
 			}
 		}
 
-		// For ML training
-		if ctx.Config().IsEnvTrue("THINLTO_EMIT_INDEXES_AND_IMPORTS") {
-			ltoLdFlags = append(ltoLdFlags, "-Wl,--save-temps=import")
-			ltoLdFlags = append(ltoLdFlags, "-Wl,--thinlto-emit-index-files")
+		// Register allocation MLGO flags for ARM64.
+		if ctx.Arch().ArchType == android.Arm64 {
+			ltoCFlags = append(ltoCFlags, "-mllvm -regalloc-enable-advisor=release")
+			ltoLdFlags = append(ltoLdFlags, "-Wl,-mllvm,-regalloc-enable-advisor=release")
+			// Flags for training MLGO model.
+			if ctx.Config().IsEnvTrue("THINLTO_EMIT_INDEXES_AND_IMPORTS") {
+				ltoLdFlags = append(ltoLdFlags, "-Wl,--save-temps=import")
+				ltoLdFlags = append(ltoLdFlags, "-Wl,--thinlto-emit-index-files")
+			}
 		}
 
 		flags.Local.CFlags = append(flags.Local.CFlags, ltoCFlags...)