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the Const::eval_bits methods don't need to be given the Ty

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This commit is contained in:
Ralf Jung 2023-09-19 17:44:31 +02:00
parent 0692db1a90
commit a2374e65aa
13 changed files with 35 additions and 48 deletions
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4
compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
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@ -660,12 +660,12 @@ fn push_const_param<'tcx>(tcx: TyCtxt<'tcx>, ct: ty::Const<'tcx>, output: &mut S
}
_ => match ct.ty().kind() {
ty::Int(ity) => {
let bits = ct.eval_bits(tcx, ty::ParamEnv::reveal_all(), ct.ty());
let bits = ct.eval_bits(tcx, ty::ParamEnv::reveal_all());
let val = Integer::from_int_ty(&tcx, *ity).size().sign_extend(bits) as i128;
write!(output, "{val}")
}
ty::Uint(_) => {
let val = ct.eval_bits(tcx, ty::ParamEnv::reveal_all(), ct.ty());
let val = ct.eval_bits(tcx, ty::ParamEnv::reveal_all());
write!(output, "{val}")
}
ty::Bool => {

2
compiler/rustc_const_eval/src/transform/promote_consts.rs
View File

@ -554,7 +554,7 @@ impl<'tcx> Validator<'_, 'tcx> {
// Integer division: the RHS must be a non-zero const.
let const_val = match rhs {
Operand::Constant(c) => {
c.literal.try_eval_bits(self.tcx, self.param_env, lhs_ty)
c.literal.try_eval_bits(self.tcx, self.param_env)
}
_ => None,
};

17
compiler/rustc_middle/src/mir/consts.rs
View File

@ -323,23 +323,18 @@ impl<'tcx> ConstantKind<'tcx> {
}
#[inline]
pub fn try_eval_bits(
&self,
tcx: TyCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
ty: Ty<'tcx>,
) -> Option<u128> {
pub fn try_eval_bits(&self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> Option<u128> {
let int = self.try_eval_scalar_int(tcx, param_env)?;
assert_eq!(self.ty(), ty);
let size = tcx.layout_of(param_env.with_reveal_all_normalized(tcx).and(ty)).ok()?.size;
let size =
tcx.layout_of(param_env.with_reveal_all_normalized(tcx).and(self.ty())).ok()?.size;
int.to_bits(size).ok()
}
/// Panics if the value cannot be evaluated or doesn't contain a valid integer of the given type.
#[inline]
pub fn eval_bits(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, ty: Ty<'tcx>) -> u128 {
self.try_eval_bits(tcx, param_env, ty)
.unwrap_or_else(|| bug!("expected bits of {:#?}, got {:#?}", ty, self))
pub fn eval_bits(self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> u128 {
self.try_eval_bits(tcx, param_env)
.unwrap_or_else(|| bug!("expected bits of {:#?}, got {:#?}", self.ty(), self))
}
#[inline]

17
compiler/rustc_middle/src/ty/consts.rs
View File

@ -339,24 +339,19 @@ impl<'tcx> Const<'tcx> {
/// Attempts to evaluate the given constant to bits. Can fail to evaluate in the presence of
/// generics (or erroneous code) or if the value can't be represented as bits (e.g. because it
/// contains const generic parameters or pointers).
pub fn try_eval_bits(
self,
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>,
ty: Ty<'tcx>,
) -> Option<u128> {
pub fn try_eval_bits(self, tcx: TyCtxt<'tcx>, param_env: ParamEnv<'tcx>) -> Option<u128> {
let int = self.try_eval_scalar_int(tcx, param_env)?;
assert_eq!(self.ty(), ty);
let size = tcx.layout_of(param_env.with_reveal_all_normalized(tcx).and(ty)).ok()?.size;
let size =
tcx.layout_of(param_env.with_reveal_all_normalized(tcx).and(self.ty())).ok()?.size;
// if `ty` does not depend on generic parameters, use an empty param_env
int.to_bits(size).ok()
}
#[inline]
/// Panics if the value cannot be evaluated or doesn't contain a valid integer of the given type.
pub fn eval_bits(self, tcx: TyCtxt<'tcx>, param_env: ParamEnv<'tcx>, ty: Ty<'tcx>) -> u128 {
self.try_eval_bits(tcx, param_env, ty)
.unwrap_or_else(|| bug!("expected bits of {:#?}, got {:#?}", ty, self))
pub fn eval_bits(self, tcx: TyCtxt<'tcx>, param_env: ParamEnv<'tcx>) -> u128 {
self.try_eval_bits(tcx, param_env)
.unwrap_or_else(|| bug!("expected bits of {:#?}, got {:#?}", self.ty(), self))
}
#[inline]

4
compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
View File

@ -100,7 +100,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
expected: "constant pattern".to_string(),
});
};
values.push(value.eval_bits(self.tcx, self.param_env, arm.pattern.ty));
values.push(value.eval_bits(self.tcx, self.param_env));
targets.push(self.parse_block(arm.body)?);
}
@ -301,7 +301,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> {
| ExprKind::NonHirLiteral { .. }
| ExprKind::ConstBlock { .. } => Ok({
let value = as_constant_inner(expr, |_| None, self.tcx);
value.literal.eval_bits(self.tcx, self.param_env, value.ty())
value.literal.eval_bits(self.tcx, self.param_env)
}),
)
}

4
compiler/rustc_mir_build/src/build/matches/mod.rs
View File

@ -1622,9 +1622,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
// may want to add cases based on the candidates that are
// available
match test.kind {
TestKind::SwitchInt { switch_ty, ref mut options } => {
TestKind::SwitchInt { switch_ty: _, ref mut options } => {
for candidate in candidates.iter() {
if !self.add_cases_to_switch(&match_place, candidate, switch_ty, options) {
if !self.add_cases_to_switch(&match_place, candidate, options) {
break;
}
}

5
compiler/rustc_mir_build/src/build/matches/test.rs
View File

@ -85,7 +85,6 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
&mut self,
test_place: &PlaceBuilder<'tcx>,
candidate: &Candidate<'pat, 'tcx>,
switch_ty: Ty<'tcx>,
options: &mut FxIndexMap<ConstantKind<'tcx>, u128>,
) -> bool {
let Some(match_pair) = candidate.match_pairs.iter().find(|mp| mp.place == *test_place)
@ -95,9 +94,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
match match_pair.pattern.kind {
PatKind::Constant { value } => {
options
.entry(value)
.or_insert_with(|| value.eval_bits(self.tcx, self.param_env, switch_ty));
options.entry(value).or_insert_with(|| value.eval_bits(self.tcx, self.param_env));
true
}
PatKind::Variant { .. } => {

6
compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs
View File

@ -146,7 +146,7 @@ impl IntRange {
valtree.unwrap_leaf().to_bits(target_size).ok()
},
// This is a more general form of the previous case.
_ => value.try_eval_bits(tcx, param_env, ty),
_ => value.try_eval_bits(tcx, param_env),
}?;
let val = val ^ bias;
@ -1379,8 +1379,8 @@ impl<'p, 'tcx> DeconstructedPat<'p, 'tcx> {
let ty = lo.ty();
ctor = if let Some(int_range) = IntRange::from_range(
cx.tcx,
lo.eval_bits(cx.tcx, cx.param_env, lo.ty()),
hi.eval_bits(cx.tcx, cx.param_env, hi.ty()),
lo.eval_bits(cx.tcx, cx.param_env),
hi.eval_bits(cx.tcx, cx.param_env),
ty,
&end,
) {

12
compiler/rustc_mir_build/src/thir/pattern/mod.rs
View File

@ -131,7 +131,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
if let Some(hir::Expr { kind: hir::ExprKind::Lit(lit), .. }) = lo_expr
&& let rustc_ast::ast::LitKind::Int(val, _) = lit.node
{
if lo.eval_bits(self.tcx, self.param_env, ty) != val {
if lo.eval_bits(self.tcx, self.param_env) != val {
lower_overflow = true;
self.tcx.sess.emit_err(LiteralOutOfRange { span: lit.span, ty, max: max() });
}
@ -139,7 +139,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
if let Some(hir::Expr { kind: hir::ExprKind::Lit(lit), .. }) = hi_expr
&& let rustc_ast::ast::LitKind::Int(val, _) = lit.node
{
if hi.eval_bits(self.tcx, self.param_env, ty) != val {
if hi.eval_bits(self.tcx, self.param_env) != val {
higher_overflow = true;
self.tcx.sess.emit_err(LiteralOutOfRange { span: lit.span, ty, max: max() });
}
@ -162,7 +162,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
if let Some(hir::Expr { kind: hir::ExprKind::Lit(lit), .. }) = lo_expr
&& let rustc_ast::ast::LitKind::Int(val, _) = lit.node
{
if lo.eval_bits(self.tcx, self.param_env, ty) != val {
if lo.eval_bits(self.tcx, self.param_env) != val {
lower_overflow = true;
self.tcx.sess.emit_err(LiteralOutOfRange { span: lit.span, ty, max: max() });
}
@ -170,7 +170,7 @@ impl<'a, 'tcx> PatCtxt<'a, 'tcx> {
if let Some(hir::Expr { kind: hir::ExprKind::Lit(lit), .. }) = hi_expr
&& let rustc_ast::ast::LitKind::Int(val, _) = lit.node
{
if hi.eval_bits(self.tcx, self.param_env, ty) != val {
if hi.eval_bits(self.tcx, self.param_env) != val {
higher_overflow = true;
self.tcx.sess.emit_err(LiteralOutOfRange { span: lit.span, ty, max: max() });
}
@ -865,8 +865,8 @@ pub(crate) fn compare_const_vals<'tcx>(
},
}
let a = a.eval_bits(tcx, param_env, ty);
let b = b.eval_bits(tcx, param_env, ty);
let a = a.eval_bits(tcx, param_env);
let b = b.eval_bits(tcx, param_env);
use rustc_apfloat::Float;
match *ty.kind() {

4
compiler/rustc_mir_transform/src/const_goto.rs
View File

@ -96,10 +96,10 @@ impl<'tcx> Visitor<'tcx> for ConstGotoOptimizationFinder<'_, 'tcx> {
let (discr, targets) = target_bb_terminator.kind.as_switch()?;
if discr.place() == Some(*place) {
let switch_ty = place.ty(self.body.local_decls(), self.tcx).ty;
debug_assert_eq!(switch_ty, _const.ty());
// We now know that the Switch matches on the const place, and it is statementless
// Now find which value in the Switch matches the const value.
let const_value =
_const.literal.try_eval_bits(self.tcx, self.param_env, switch_ty)?;
let const_value = _const.literal.try_eval_bits(self.tcx, self.param_env)?;
let target_to_use_in_goto = targets.target_for_value(const_value);
self.optimizations.push(OptimizationToApply {
bb_with_goto: location.block,

2
compiler/rustc_mir_transform/src/simplify_branches.rs
View File

@ -23,7 +23,7 @@ impl<'tcx> MirPass<'tcx> for SimplifyConstCondition {
TerminatorKind::SwitchInt {
discr: Operand::Constant(ref c), ref targets, ..
} => {
let constant = c.literal.try_eval_bits(tcx, param_env, c.ty());
let constant = c.literal.try_eval_bits(tcx, param_env);
if let Some(constant) = constant {
let target = targets.target_for_value(constant);
TerminatorKind::Goto { target }

4
compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs
View File

@ -118,7 +118,7 @@ fn encode_const<'tcx>(
// bool value false is encoded as 0 and true as 1.
match c.ty().kind() {
ty::Int(ity) => {
let bits = c.eval_bits(tcx, ty::ParamEnv::reveal_all(), c.ty());
let bits = c.eval_bits(tcx, ty::ParamEnv::reveal_all());
let val = Integer::from_int_ty(&tcx, *ity).size().sign_extend(bits) as i128;
if val < 0 {
s.push('n');
@ -126,7 +126,7 @@ fn encode_const<'tcx>(
let _ = write!(s, "{val}");
}
ty::Uint(_) => {
let val = c.eval_bits(tcx, ty::ParamEnv::reveal_all(), c.ty());
let val = c.eval_bits(tcx, ty::ParamEnv::reveal_all());
let _ = write!(s, "{val}");
}
ty::Bool => {

2
compiler/rustc_symbol_mangling/src/v0.rs
View File

@ -594,7 +594,7 @@ impl<'tcx> Printer<'tcx> for &mut SymbolMangler<'tcx> {
ty::Uint(_) | ty::Int(_) | ty::Bool | ty::Char => {
self = ty.print(self)?;
let mut bits = ct.eval_bits(self.tcx, ty::ParamEnv::reveal_all(), ty);
let mut bits = ct.eval_bits(self.tcx, ty::ParamEnv::reveal_all());
// Negative integer values are mangled using `n` as a "sign prefix".
if let ty::Int(ity) = ty.kind() {