bjoernager/rust
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Introduce Rvalue::ShallowInitBox

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This commit is contained in:
Gary Guo 2021-09-06 18:33:23 +01:00
parent 308dffd25c
commit c38da2e0a3
19 changed files with 68 additions and 11 deletions
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13
compiler/rustc_codegen_ssa/src/mir/rvalue.rs
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@ -550,6 +550,18 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
OperandRef::new_zst(&mut bx, self.cx.layout_of(self.monomorphize(ty)));
(bx, operand)
}
mir::Rvalue::ShallowInitBox(ref operand, content_ty) => {
let operand = self.codegen_operand(&mut bx, operand);
let lloperand = operand.immediate();
let content_ty = self.monomorphize(content_ty);
let box_layout = bx.cx().layout_of(bx.tcx().mk_box(content_ty));
let llty_ptr = bx.cx().backend_type(box_layout);
let val = bx.pointercast(lloperand, llty_ptr);
let operand = OperandRef { val: OperandValue::Immediate(val), layout: box_layout };
(bx, operand)
}
}
}
@ -763,6 +775,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
mir::Rvalue::AddressOf(..) |
mir::Rvalue::Len(..) |
mir::Rvalue::Cast(..) | // (*)
mir::Rvalue::ShallowInitBox(..) | // (*)
mir::Rvalue::BinaryOp(..) |
mir::Rvalue::CheckedBinaryOp(..) |
mir::Rvalue::UnaryOp(..) |