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Add unaligned_volatile_{load,store} intrinsics

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This commit is contained in:
bjorn3 2020-07-23 12:37:27 +02:00
parent 3f2589acd9
commit 95511cb3ee
1 changed files with 4 additions and 2 deletions
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6
src/intrinsics/mod.rs
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@ -823,17 +823,19 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
}
};
volatile_load, (c ptr) {
volatile_load | unaligned_volatile_load, (c ptr) {
// Cranelift treats loads as volatile by default
// FIXME ignore during stack2reg optimization
// FIXME correctly handle unaligned_volatile_load
let inner_layout =
fx.layout_of(ptr.layout().ty.builtin_deref(true).unwrap().ty);
let val = CValue::by_ref(Pointer::new(ptr.load_scalar(fx)), inner_layout);
ret.write_cvalue(fx, val);
};
volatile_store, (v ptr, c val) {
volatile_store | unaligned_volatile_store, (v ptr, c val) {
// Cranelift treats stores as volatile by default
// FIXME ignore during stack2reg optimization
// FIXME correctly handle unaligned_volatile_store
let dest = CPlace::for_ptr(Pointer::new(ptr), val.layout());
dest.write_cvalue(fx, val);
};