From 53d56091c61ce603690ccacfec357657879a148e Mon Sep 17 00:00:00 2001
From: Amanieu d'Antras <amanieu@gmail.com>
Date: Sat, 20 Aug 2022 19:56:16 +0100
Subject: [PATCH] Use `llvm.ppc.altivec.lvx` intrinsic for `vec_ld`

The `vec_ld` intrinsic is expected to automatically round the given
address down to a 16-byte boundary.
---
 library/stdarch/crates/core_arch/src/powerpc/altivec.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/library/stdarch/crates/core_arch/src/powerpc/altivec.rs b/library/stdarch/crates/core_arch/src/powerpc/altivec.rs
index 8b2be39dc7a5..70344c88be32 100644
--- a/library/stdarch/crates/core_arch/src/powerpc/altivec.rs
+++ b/library/stdarch/crates/core_arch/src/powerpc/altivec.rs
@@ -51,6 +51,8 @@ types! {
 
 #[allow(improper_ctypes)]
 extern "C" {
+    #[link_name = "llvm.ppc.altivec.lvx"]
+    fn lvx(p: *const i8) -> vector_unsigned_int;
     #[link_name = "llvm.ppc.altivec.vperm"]
     fn vperm(
         a: vector_signed_int,
@@ -442,8 +444,7 @@ mod sealed {
     #[inline(always)]
     unsafe fn load(off: i32, p: *const i8) -> u32x4 {
         let addr = p.offset(off as isize);
-
-        *(addr as *const u32x4)
+        transmute(lvx(addr))
     }
 
     pub trait VectorLd {