diff --git a/messages.ftl b/messages.ftl index 0235384445e..bbae59ea7a5 100644 --- a/messages.ftl +++ b/messages.ftl @@ -8,9 +8,6 @@ codegen_gcc_invalid_minimum_alignment = codegen_gcc_lto_not_supported = LTO is not supported. You may get a linker error. -codegen_gcc_tied_target_features = the target features {$features} must all be either enabled or disabled together - .help = add the missing features in a `target_feature` attribute - codegen_gcc_unwinding_inline_asm = GCC backend does not support unwinding from inline asm diff --git a/src/attributes.rs b/src/attributes.rs index 5fdf2680aac..d20e13e15b9 100644 --- a/src/attributes.rs +++ b/src/attributes.rs @@ -7,11 +7,9 @@ use rustc_attr::InstructionSetAttr; #[cfg(feature = "master")] use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; use rustc_middle::ty; -use rustc_span::symbol::sym; use crate::context::CodegenCx; -use crate::errors::TiedTargetFeatures; -use crate::gcc_util::{check_tied_features, to_gcc_features}; +use crate::gcc_util::to_gcc_features; /// Get GCC attribute for the provided inline heuristic. #[cfg(feature = "master")] @@ -72,26 +70,10 @@ pub fn from_fn_attrs<'gcc, 'tcx>( } } - let function_features = codegen_fn_attrs + let mut function_features = codegen_fn_attrs .target_features .iter() .map(|features| features.name.as_str()) - .collect::>(); - - if let Some(features) = check_tied_features( - cx.tcx.sess, - &function_features.iter().map(|features| (*features, true)).collect(), - ) { - let span = cx - .tcx - .get_attr(instance.def_id(), sym::target_feature) - .map_or_else(|| cx.tcx.def_span(instance.def_id()), |a| a.span); - cx.tcx.dcx().create_err(TiedTargetFeatures { features: features.join(", "), span }).emit(); - return; - } - - let mut function_features = function_features - .iter() .flat_map(|feat| to_gcc_features(cx.tcx.sess, feat).into_iter()) .chain(codegen_fn_attrs.instruction_set.iter().map(|x| match *x { InstructionSetAttr::ArmA32 => "-thumb-mode", // TODO(antoyo): support removing feature. diff --git a/src/errors.rs b/src/errors.rs index 6bada3d334c..dc1895f437b 100644 --- a/src/errors.rs +++ b/src/errors.rs @@ -1,9 +1,6 @@ -use rustc_errors::{Diag, DiagCtxtHandle, Diagnostic, EmissionGuarantee, Level}; use rustc_macros::{Diagnostic, Subdiagnostic}; use rustc_span::Span; -use crate::fluent_generated as fluent; - #[derive(Diagnostic)] #[diag(codegen_gcc_unknown_ctarget_feature_prefix)] #[note] @@ -45,15 +42,6 @@ pub(crate) struct InvalidMinimumAlignment { pub err: String, } -#[derive(Diagnostic)] -#[diag(codegen_gcc_tied_target_features)] -#[help] -pub(crate) struct TiedTargetFeatures { - #[primary_span] - pub span: Span, - pub features: String, -} - #[derive(Diagnostic)] #[diag(codegen_gcc_copy_bitcode)] pub(crate) struct CopyBitcode { @@ -78,27 +66,3 @@ pub(crate) struct LtoDylib; pub(crate) struct LtoBitcodeFromRlib { pub gcc_err: String, } - -pub(crate) struct TargetFeatureDisableOrEnable<'a> { - pub features: &'a [&'a str], - pub span: Option, - pub missing_features: Option, -} - -#[derive(Subdiagnostic)] -#[help(codegen_gcc_missing_features)] -pub(crate) struct MissingFeatures; - -impl Diagnostic<'_, G> for TargetFeatureDisableOrEnable<'_> { - fn into_diag(self, dcx: DiagCtxtHandle<'_>, level: Level) -> Diag<'_, G> { - let mut diag = Diag::new(dcx, level, fluent::codegen_gcc_target_feature_disable_or_enable); - if let Some(span) = self.span { - diag.span(span); - }; - if let Some(missing_features) = self.missing_features { - diag.subdiagnostic(missing_features); - } - diag.arg("features", self.features.join(", ")); - diag - } -} diff --git a/src/gcc_util.rs b/src/gcc_util.rs index 01dd1a8856a..3104088e0d5 100644 --- a/src/gcc_util.rs +++ b/src/gcc_util.rs @@ -1,15 +1,14 @@ #[cfg(feature = "master")] use gccjit::Context; +use rustc_codegen_ssa::codegen_attrs::check_tied_features; +use rustc_codegen_ssa::errors::TargetFeatureDisableOrEnable; use rustc_data_structures::fx::FxHashMap; use rustc_middle::bug; use rustc_session::Session; use rustc_target::target_features::RUSTC_SPECIFIC_FEATURES; use smallvec::{SmallVec, smallvec}; -use crate::errors::{ - PossibleFeature, TargetFeatureDisableOrEnable, UnknownCTargetFeature, - UnknownCTargetFeaturePrefix, -}; +use crate::errors::{PossibleFeature, UnknownCTargetFeature, UnknownCTargetFeaturePrefix}; /// The list of GCC features computed from CLI flags (`-Ctarget-cpu`, `-Ctarget-feature`, /// `--target` and similar). @@ -185,23 +184,6 @@ pub fn to_gcc_features<'a>(sess: &Session, s: &'a str) -> SmallVec<[&'a str; 2]> } } -// Given a map from target_features to whether they are enabled or disabled, -// ensure only valid combinations are allowed. -pub fn check_tied_features( - sess: &Session, - features: &FxHashMap<&str, bool>, -) -> Option<&'static [&'static str]> { - for tied in sess.target.tied_target_features() { - // Tied features must be set to the same value, or not set at all - let mut tied_iter = tied.iter(); - let enabled = features.get(tied_iter.next().unwrap()); - if tied_iter.any(|feature| enabled != features.get(feature)) { - return Some(tied); - } - } - None -} - fn arch_to_gcc(name: &str) -> &str { match name { "M68020" => "68020",