diff --git a/src/librustc_platform_intrinsics/aarch64.rs b/src/librustc_platform_intrinsics/aarch64.rs
index a3084d903e27f..1db5b3cb9ea30 100644
--- a/src/librustc_platform_intrinsics/aarch64.rs
+++ b/src/librustc_platform_intrinsics/aarch64.rs
@@ -17,6 +17,7 @@ use {Intrinsic, i, i_, u, u_, f, v, v_, agg, p, void};
 use IntrinsicDef::Named;
 use rustc::middle::ty;
 
+#[inline(never)]
 pub fn find<'tcx>(_tcx: &ty::ctxt<'tcx>, name: &str) -> Option<Intrinsic> {
     if !name.starts_with("aarch64_v") { return None }
     Some(match &name["aarch64_v".len()..] {
diff --git a/src/librustc_platform_intrinsics/arm.rs b/src/librustc_platform_intrinsics/arm.rs
index 89b147027b5e8..eae5c520883db 100644
--- a/src/librustc_platform_intrinsics/arm.rs
+++ b/src/librustc_platform_intrinsics/arm.rs
@@ -17,6 +17,7 @@ use {Intrinsic, i, i_, u, u_, f, v, agg, p};
 use IntrinsicDef::Named;
 use rustc::middle::ty;
 
+#[inline(never)]
 pub fn find<'tcx>(_tcx: &ty::ctxt<'tcx>, name: &str) -> Option<Intrinsic> {
     if !name.starts_with("arm_v") { return None }
     Some(match &name["arm_v".len()..] {
diff --git a/src/librustc_platform_intrinsics/x86.rs b/src/librustc_platform_intrinsics/x86.rs
index 2dfd00e9ce3bf..19aeb589e70eb 100644
--- a/src/librustc_platform_intrinsics/x86.rs
+++ b/src/librustc_platform_intrinsics/x86.rs
@@ -17,6 +17,7 @@ use {Intrinsic, i, i_, u, u_, f, v, v_, agg, p, void};
 use IntrinsicDef::Named;
 use rustc::middle::ty;
 
+#[inline(never)]
 pub fn find<'tcx>(_tcx: &ty::ctxt<'tcx>, name: &str) -> Option<Intrinsic> {
     if !name.starts_with("x86_mm") { return None }
     Some(match &name["x86_mm".len()..] {