Fix pointer type for _mm512_loadu_si512

The C intrinsic uses a void pointer but we must specify a type in Rust.
This PR makes it consistent with the equivalent SSE and AVX intrinsics,
as well as `_mm512_store_si512`.

Author: Amanieu

crates/core_arch/src/x86/avx512f.rs

@@ -34435,7 +34435,7 @@ pub unsafe fn _mm_storeu_epi64(mem_addr: *mut i64, a: __m128i) {
 #[target_feature(enable = "avx512f")]
 #[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
 #[cfg_attr(test, assert_instr(vmovups))] //should be vmovdqu32
-pub unsafe fn _mm512_loadu_si512(mem_addr: *const i32) -> __m512i {
+pub unsafe fn _mm512_loadu_si512(mem_addr: *const __m512i) -> __m512i {
     ptr::read_unaligned(mem_addr as *const __m512i)
 }
 
@@ -34509,7 +34509,7 @@ pub unsafe fn _mm512_storeu_ps(mem_addr: *mut f32, a: __m512) {
 #[target_feature(enable = "avx512f")]
 #[unstable(feature = "stdarch_x86_avx512", issue = "111137")]
 #[cfg_attr(test, assert_instr(vmovaps))] //should be vmovdqa32
-pub unsafe fn _mm512_load_si512(mem_addr: *const i32) -> __m512i {
+pub unsafe fn _mm512_load_si512(mem_addr: *const __m512i) -> __m512i {
     ptr::read(mem_addr as *const __m512i)
 }