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Disable big-endian simd in swap_nonoverlapping_bytes #43159

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Merged
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Jul 15, 2017
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Disable big-endian simd in swap_nonoverlapping_bytes #43159

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5 changes: 4 additions & 1 deletion src/libcore/ptr.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -160,7 +160,10 @@ unsafe fn swap_nonoverlapping_bytes(x: *mut u8, y: *mut u8, len: usize) {
// #[repr(simd)], even if we don't actually use this struct directly.
//
// FIXME repr(simd) broken on emscripten and redox
#[cfg_attr(not(any(target_os = "emscripten", target_os = "redox")), repr(simd))]
// It's also broken on big-endian powerpc64 and s390x. #42778
#[cfg_attr(not(any(target_os = "emscripten", target_os = "redox",
target_endian = "big")),
repr(simd))]
struct Block(u64, u64, u64, u64);
struct UnalignedBlock(u64, u64, u64, u64);

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