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Use GrowableBitSet to store positional indexes in asm!

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This commit is contained in:
clubby789 2023-05-02 16:42:36 +01:00
parent 1590350836
commit e3e93f2867
3 changed files with 10 additions and 7 deletions
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1
Cargo.lock
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@ -3164,6 +3164,7 @@ dependencies = [
"rustc_expand",
"rustc_feature",
"rustc_fluent_macro",
"rustc_index",
"rustc_lexer",
"rustc_lint_defs",
"rustc_macros",

1
compiler/rustc_builtin_macros/Cargo.toml
View file

@ -14,6 +14,7 @@ rustc_data_structures = { path = "../rustc_data_structures" }
rustc_errors = { path = "../rustc_errors" }
rustc_expand = { path = "../rustc_expand" }
rustc_feature = { path = "../rustc_feature" }
rustc_index = { path = "../rustc_index" }
rustc_lexer = { path = "../rustc_lexer" }
rustc_lint_defs = { path = "../rustc_lint_defs" }
rustc_macros = { path = "../rustc_macros" }

15
compiler/rustc_builtin_macros/src/asm.rs
View file

@ -2,9 +2,10 @@
use rustc_ast::ptr::P;
use rustc_ast::token::{self, Delimiter};
use rustc_ast::tokenstream::TokenStream;
use rustc_data_structures::fx::{FxHashMap, FxIndexMap, FxIndexSet};
use rustc_data_structures::fx::{FxHashMap, FxIndexMap};
use rustc_errors::PResult;
use rustc_expand::base::{self, *};
use rustc_index::bit_set::GrowableBitSet;
use rustc_parse::parser::Parser;
use rustc_parse_format as parse;
use rustc_session::lint;
@ -21,7 +22,7 @@ pub struct AsmArgs {
pub templates: Vec<P<ast::Expr>>,
pub operands: Vec<(ast::InlineAsmOperand, Span)>,
named_args: FxIndexMap<Symbol, usize>,
reg_args: FxIndexSet<usize>,
reg_args: GrowableBitSet<usize>,
pub clobber_abis: Vec<(Symbol, Span)>,
options: ast::InlineAsmOptions,
pub options_spans: Vec<Span>,
@ -213,7 +214,7 @@ pub fn parse_asm_args<'a>(
} else {
if !args.named_args.is_empty() || !args.reg_args.is_empty() {
let named = args.named_args.values().map(|p| args.operands[*p].1).collect();
let explicit = args.reg_args.iter().map(|p| args.operands[*p].1).collect();
let explicit = args.reg_args.iter().map(|p| args.operands[p].1).collect();
diag.emit_err(errors::AsmPositionalAfter { span, named, explicit });
}
@ -446,8 +447,8 @@ fn expand_preparsed_asm(ecx: &mut ExtCtxt<'_>, args: AsmArgs) -> Option<ast::Inl
// Register operands are implicitly used since they are not allowed to be
// referenced in the template string.
let mut used = vec![false; args.operands.len()];
for pos in &args.reg_args {
used[*pos] = true;
for pos in args.reg_args.iter() {
used[pos] = true;
}
let named_pos: FxHashMap<usize, Symbol> =
args.named_args.iter().map(|(&sym, &idx)| (idx, sym)).collect();
@ -581,7 +582,7 @@ fn expand_preparsed_asm(ecx: &mut ExtCtxt<'_>, args: AsmArgs) -> Option<ast::Inl
parse::ArgumentIs(idx) | parse::ArgumentImplicitlyIs(idx) => {
if idx >= args.operands.len()
|| named_pos.contains_key(&idx)
|| args.reg_args.contains(&idx)
|| args.reg_args.contains(idx)
{
let msg = format!("invalid reference to argument at index {}", idx);
let mut err = ecx.struct_span_err(span, &msg);
@ -608,7 +609,7 @@ fn expand_preparsed_asm(ecx: &mut ExtCtxt<'_>, args: AsmArgs) -> Option<ast::Inl
args.operands[idx].1,
"named arguments cannot be referenced by position",
);
} else if args.reg_args.contains(&idx) {
} else if args.reg_args.contains(idx) {
err.span_label(
args.operands[idx].1,
"explicit register argument",