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Reimplement lowering of sym operands for asm! so that it also works with global_asm!

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This commit is contained in:
Amanieu d'Antras 2022-03-01 00:50:56 +00:00
parent f9d4d12b6a
commit dc345d8bff
28 changed files with 400 additions and 163 deletions
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22
compiler/rustc_builtin_macros/src/asm.rs
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@ -154,17 +154,19 @@ pub fn parse_asm_args<'a>(
} else if p.eat_keyword(kw::Const) {
let anon_const = p.parse_anon_const_expr()?;
ast::InlineAsmOperand::Const { anon_const }
} else if !is_global_asm && p.eat_keyword(sym::sym) {
} else if p.eat_keyword(sym::sym) {
let expr = p.parse_expr()?;
match expr.kind {
ast::ExprKind::Path(..) => {}
_ => {
let err = diag
.struct_span_err(expr.span, "argument to `sym` must be a path expression");
return Err(err);
}
}
ast::InlineAsmOperand::Sym { expr }
let ast::ExprKind::Path(qself, path) = &expr.kind else {
let err = diag
.struct_span_err(expr.span, "expected a path for argument to `sym`");
return Err(err);
};
let sym = ast::InlineAsmSym {
id: ast::DUMMY_NODE_ID,
qself: qself.clone(),
path: path.clone(),
};
ast::InlineAsmOperand::Sym { sym }
} else if allow_templates {
let template = p.parse_expr()?;
// If it can't possibly expand to a string, provide diagnostics here to include other