diff options
Diffstat (limited to 'compiler/rustc_codegen_cranelift/src/value_and_place.rs')
| -rw-r--r-- | compiler/rustc_codegen_cranelift/src/value_and_place.rs | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/compiler/rustc_codegen_cranelift/src/value_and_place.rs b/compiler/rustc_codegen_cranelift/src/value_and_place.rs index 1aa28daeafc..8eb2095e523 100644 --- a/compiler/rustc_codegen_cranelift/src/value_and_place.rs +++ b/compiler/rustc_codegen_cranelift/src/value_and_place.rs @@ -677,8 +677,10 @@ impl<'tcx> CPlace<'tcx> { let to_addr = to_ptr.get_addr(fx); let src_layout = from.1; let size = dst_layout.size.bytes(); - let src_align = src_layout.align.abi.bytes() as u8; - let dst_align = dst_layout.align.abi.bytes() as u8; + // `emit_small_memory_copy` uses `u8` for alignments, just use the maximum + // alignment that fits in a `u8` if the actual alignment is larger. + let src_align = src_layout.align.abi.bytes().try_into().unwrap_or(128); + let dst_align = dst_layout.align.abi.bytes().try_into().unwrap_or(128); fx.bcx.emit_small_memory_copy( fx.target_config, to_addr, |