nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-23 23:34:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add unaligned_volatile_{load,store} intrinsics

Browse Source
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/intrinsics/mod.rs
View File

@ -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 // Cranelift treats loads as volatile by default
// FIXME ignore during stack2reg optimization // FIXME ignore during stack2reg optimization
// FIXME correctly handle unaligned_volatile_load
let inner_layout = let inner_layout =
fx.layout_of(ptr.layout().ty.builtin_deref(true).unwrap().ty); fx.layout_of(ptr.layout().ty.builtin_deref(true).unwrap().ty);
let val = CValue::by_ref(Pointer::new(ptr.load_scalar(fx)), inner_layout); let val = CValue::by_ref(Pointer::new(ptr.load_scalar(fx)), inner_layout);
ret.write_cvalue(fx, val); 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 // Cranelift treats stores as volatile by default
// FIXME ignore during stack2reg optimization // FIXME ignore during stack2reg optimization
// FIXME correctly handle unaligned_volatile_store
let dest = CPlace::for_ptr(Pointer::new(ptr), val.layout()); let dest = CPlace::for_ptr(Pointer::new(ptr), val.layout());
dest.write_cvalue(fx, val); dest.write_cvalue(fx, val);
}; };