rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Move CTFE handling of nondiverging intrinsics to intrinsics.rs

Browse Source
This commit is contained in:
Oli Scherer
2022-08-31 15:23:41 +00:00
parent b7413511dc
commit 104f97e5aa
2 changed files with 29 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
compiler/rustc_const_eval/src/interpret/step.rs
View File

@@ -2,8 +2,8 @@
//!
//! The main entry point is the `step` method.
use rustc_middle::mir;
use rustc_middle::mir::interpret::{InterpResult, Scalar};
use rustc_middle::mir::{self, NonDivergingIntrinsic};
use rustc_middle::ty::layout::LayoutOf;
use super::{InterpCx, Machine};
@@ -114,23 +114,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
M::retag(self, *kind, &dest)?;
}
Intrinsic(box NonDivergingIntrinsic::Assume(op)) => {
let op = self.eval_operand(op, None)?;
let cond = self.read_scalar(&op)?.to_bool()?;
if !cond {
throw_ub_format!("`assume` called with `false`");
}
}
Intrinsic(box NonDivergingIntrinsic::CopyNonOverlapping(mir::CopyNonOverlapping {
ref count,
ref src,
ref dst,
})) => {
let src = self.eval_operand(src, None)?;
let dst = self.eval_operand(dst, None)?;
let count = self.eval_operand(count, None)?;
self.copy_intrinsic(&src, &dst, &count, /* nonoverlapping */ true)?;
}
Intrinsic(box ref intrinsic) => self.emulate_nondiverging_intrinsic(intrinsic)?,
// Statements we do not track.
AscribeUserType(..) => {}