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Rollup merge of #108364 - Nilstrieb:validity-checks-refactor, r=compiler-errors

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Unify validity checks into a single query

Previously, there were two queries to check whether a type allows the 0x01 or zeroed bitpattern.

I am planning on adding a further initness to check in #100423, truly uninit for MaybeUninit, which would make this three queries. This seems overkill for such a small feature, so this PR unifies them into one.

I am not entirely happy with the naming and key type and open for improvements.

r? oli-obk
This commit is contained in:
Matthias Krüger 2023-02-27 06:11:52 +01:00 committed by GitHub
commit 32317b5a5b
1 changed files with 7 additions and 3 deletions
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10
src/intrinsics/mod.rs
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@ -21,7 +21,8 @@ macro_rules! intrinsic_args {
pub(crate) use cpuid::codegen_cpuid_call;
pub(crate) use llvm::codegen_llvm_intrinsic_call;
use rustc_middle::ty::layout::HasParamEnv;
use rustc_middle::ty;
use rustc_middle::ty::layout::{HasParamEnv, InitKind};
use rustc_middle::ty::print::with_no_trimmed_paths;
use rustc_middle::ty::subst::SubstsRef;
use rustc_span::symbol::{kw, sym, Symbol};
@ -642,7 +643,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
if intrinsic == sym::assert_zero_valid
&& !fx
.tcx
.permits_zero_init(fx.param_env().and(ty))
.check_validity_of_init((InitKind::Zero, fx.param_env().and(ty)))
.expect("expected to have layout during codegen")
{
with_no_trimmed_paths!({
@ -661,7 +662,10 @@ fn codegen_regular_intrinsic_call<'tcx>(
if intrinsic == sym::assert_mem_uninitialized_valid
&& !fx
.tcx
.permits_uninit_init(fx.param_env().and(ty))
.check_validity_of_init((
InitKind::UninitMitigated0x01Fill,
fx.param_env().and(ty),
))
.expect("expected to have layout during codegen")
{
with_no_trimmed_paths!({