diff --git a/crates/core_arch/src/arm/dsp.rs b/crates/core_arch/src/arm/dsp.rs
index 001f642f19..e708bb7061 100644
--- a/crates/core_arch/src/arm/dsp.rs
+++ b/crates/core_arch/src/arm/dsp.rs
@@ -25,15 +25,6 @@ use stdarch_test::assert_instr;
 
 use crate::mem::transmute;
 
-types! {
-    #![unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-
-    /// ARM-specific 32-bit wide vector of two packed `i16`.
-    pub struct int16x2_t(2 x i16);
-    /// ARM-specific 32-bit wide vector of two packed `u16`.
-    pub struct uint16x2_t(2 x u16);
-}
-
 extern "unadjusted" {
     #[link_name = "llvm.arm.smulbb"]
     fn arm_smulbb(a: i32, b: i32) -> i32;
@@ -85,7 +76,7 @@ extern "unadjusted" {
 #[inline]
 #[cfg_attr(test, assert_instr(smulbb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smulbb(a: int16x2_t, b: int16x2_t) -> i32 {
+pub unsafe fn __smulbb(a: i32, b: i32) -> i32 {
     arm_smulbb(transmute(a), transmute(b))
 }
 
@@ -96,7 +87,7 @@ pub unsafe fn __smulbb(a: int16x2_t, b: int16x2_t) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smultb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smultb(a: int16x2_t, b: int16x2_t) -> i32 {
+pub unsafe fn __smultb(a: i32, b: i32) -> i32 {
     arm_smultb(transmute(a), transmute(b))
 }
 
@@ -107,7 +98,7 @@ pub unsafe fn __smultb(a: int16x2_t, b: int16x2_t) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smulbt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smulbt(a: int16x2_t, b: int16x2_t) -> i32 {
+pub unsafe fn __smulbt(a: i32, b: i32) -> i32 {
     arm_smulbt(transmute(a), transmute(b))
 }
 
@@ -118,7 +109,7 @@ pub unsafe fn __smulbt(a: int16x2_t, b: int16x2_t) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smultt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smultt(a: int16x2_t, b: int16x2_t) -> i32 {
+pub unsafe fn __smultt(a: i32, b: i32) -> i32 {
     arm_smultt(transmute(a), transmute(b))
 }
 
@@ -130,7 +121,7 @@ pub unsafe fn __smultt(a: int16x2_t, b: int16x2_t) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smulwb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smulwb(a: int16x2_t, b: i32) -> i32 {
+pub unsafe fn __smulwb(a: i32, b: i32) -> i32 {
     arm_smulwb(transmute(a), b)
 }
 
@@ -142,7 +133,7 @@ pub unsafe fn __smulwb(a: int16x2_t, b: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smulwt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smulwt(a: int16x2_t, b: i32) -> i32 {
+pub unsafe fn __smulwt(a: i32, b: i32) -> i32 {
     arm_smulwt(transmute(a), b)
 }
 
@@ -187,7 +178,7 @@ pub unsafe fn __qdbl(a: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlabb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlabb(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlabb(a: i32, b: i32, c: i32) -> i32 {
     arm_smlabb(transmute(a), transmute(b), c)
 }
 
@@ -199,7 +190,7 @@ pub unsafe fn __smlabb(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlabt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlabt(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlabt(a: i32, b: i32, c: i32) -> i32 {
     arm_smlabt(transmute(a), transmute(b), c)
 }
 
@@ -211,7 +202,7 @@ pub unsafe fn __smlabt(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlatb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlatb(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlatb(a: i32, b: i32, c: i32) -> i32 {
     arm_smlatb(transmute(a), transmute(b), c)
 }
 
@@ -223,7 +214,7 @@ pub unsafe fn __smlatb(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlatt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlatt(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlatt(a: i32, b: i32, c: i32) -> i32 {
     arm_smlatt(transmute(a), transmute(b), c)
 }
 
@@ -235,7 +226,7 @@ pub unsafe fn __smlatt(a: int16x2_t, b: int16x2_t, c: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlawb))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlawb(a: i32, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlawb(a: i32, b: i32, c: i32) -> i32 {
     arm_smlawb(a, transmute(b), c)
 }
 
@@ -247,7 +238,7 @@ pub unsafe fn __smlawb(a: i32, b: int16x2_t, c: i32) -> i32 {
 #[inline]
 #[cfg_attr(test, assert_instr(smlawt))]
 #[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
-pub unsafe fn __smlawt(a: i32, b: int16x2_t, c: i32) -> i32 {
+pub unsafe fn __smlawt(a: i32, b: i32, c: i32) -> i32 {
     arm_smlawt(a, transmute(b), c)
 }
 
diff --git a/crates/core_arch/src/arm/simd32.rs b/crates/core_arch/src/arm/simd32.rs
index 260add2464..cb69b2de8b 100644
--- a/crates/core_arch/src/arm/simd32.rs
+++ b/crates/core_arch/src/arm/simd32.rs
@@ -65,16 +65,27 @@
 #[cfg(test)]
 use stdarch_test::assert_instr;
 
-use crate::{core_arch::arm::dsp::int16x2_t, mem::transmute};
+use crate::mem::transmute;
 
-types! {
-    #![unstable(feature = "stdarch_arm_dsp", issue = "117237")]
+/// ARM-specific vector of four packed `i8` packed into a 32-bit integer.
+#[allow(non_camel_case_types)]
+#[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
+pub type int8x4_t = i32;
 
-    /// ARM-specific 32-bit wide vector of four packed `i8`.
-    pub struct int8x4_t(4 x i8);
-    /// ARM-specific 32-bit wide vector of four packed `u8`.
-    pub struct uint8x4_t(4 x u8);
-}
+/// ARM-specific vector of four packed `u8` packed into a 32-bit integer.
+#[allow(non_camel_case_types)]
+#[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
+pub type uint8x4_t = u32;
+
+/// ARM-specific vector of two packed `i16` packed into a 32-bit integer.
+#[allow(non_camel_case_types)]
+#[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
+pub type int16x2_t = i32;
+
+/// ARM-specific vector of two packed `u16` packed into a 32-bit integer.
+#[allow(non_camel_case_types)]
+#[unstable(feature = "stdarch_arm_dsp", issue = "117237")]
+pub type uint16x2_t = u32;
 
 macro_rules! dsp_call {
     ($name:expr, $a:expr, $b:expr) => {