bjoernager/rust
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Merge commit 'b385428e3d' into subtree-update_cg_gcc_2024-03-05

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This commit is contained in:
Guillaume Gomez 2024-03-05 19:58:36 +01:00
commit 0d359efbe6
76 changed files with 7183 additions and 4278 deletions
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77
compiler/rustc_codegen_gcc/src/attributes.rs
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@ -1,21 +1,24 @@
#[cfg(feature="master")]
#[cfg(feature = "master")]
use gccjit::FnAttribute;
use gccjit::Function;
use rustc_attr::InstructionSetAttr;
#[cfg(feature="master")]
#[cfg(feature = "master")]
use rustc_attr::InlineAttr;
use rustc_middle::ty;
#[cfg(feature="master")]
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, errors::TiedTargetFeatures};
use crate::gcc_util::{check_tied_features, to_gcc_features};
use crate::{context::CodegenCx, errors::TiedTargetFeatures};
/// Get GCC attribute for the provided inline heuristic.
#[cfg(feature="master")]
#[cfg(feature = "master")]
#[inline]
fn inline_attr<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, inline: InlineAttr) -> Option<FnAttribute<'gcc>> {
fn inline_attr<'gcc, 'tcx>(
cx: &CodegenCx<'gcc, 'tcx>,
inline: InlineAttr,
) -> Option<FnAttribute<'gcc>> {
match inline {
InlineAttr::Hint => Some(FnAttribute::Inline),
InlineAttr::Always => Some(FnAttribute::AlwaysInline),
@ -34,24 +37,22 @@ fn inline_attr<'gcc, 'tcx>(cx: &CodegenCx<'gcc, 'tcx>, inline: InlineAttr) -> Op
/// attributes.
pub fn from_fn_attrs<'gcc, 'tcx>(
cx: &CodegenCx<'gcc, 'tcx>,
#[cfg_attr(not(feature="master"), allow(unused_variables))]
func: Function<'gcc>,
#[cfg_attr(not(feature = "master"), allow(unused_variables))] func: Function<'gcc>,
instance: ty::Instance<'tcx>,
) {
let codegen_fn_attrs = cx.tcx.codegen_fn_attrs(instance.def_id());
#[cfg(feature="master")]
#[cfg(feature = "master")]
{
let inline =
if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::NAKED) {
InlineAttr::Never
}
else if codegen_fn_attrs.inline == InlineAttr::None && instance.def.requires_inline(cx.tcx) {
InlineAttr::Hint
}
else {
codegen_fn_attrs.inline
};
let inline = if codegen_fn_attrs.flags.contains(CodegenFnAttrFlags::NAKED) {
InlineAttr::Never
} else if codegen_fn_attrs.inline == InlineAttr::None
&& instance.def.requires_inline(cx.tcx)
{
InlineAttr::Hint
} else {
codegen_fn_attrs.inline
};
if let Some(attr) = inline_attr(cx, inline) {
if let FnAttribute::AlwaysInline = attr {
func.add_attribute(FnAttribute::Inline);
@ -70,18 +71,21 @@ pub fn from_fn_attrs<'gcc, 'tcx>(
}
}
let function_features =
codegen_fn_attrs.target_features.iter().map(|features| features.as_str()).collect::<Vec<&str>>();
let function_features = codegen_fn_attrs
.target_features
.iter()
.map(|features| features.as_str())
.collect::<Vec<&str>>();
if let Some(features) = check_tied_features(cx.tcx.sess, &function_features.iter().map(|features| (*features, true)).collect()) {
let span = cx.tcx
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();
cx.tcx.dcx().create_err(TiedTargetFeatures { features: features.join(", "), span }).emit();
return;
}
@ -105,24 +109,25 @@ pub fn from_fn_attrs<'gcc, 'tcx>(
// compiling Rust for Linux:
// SSE register return with SSE disabled
// TODO(antoyo): support soft-float and retpoline-external-thunk.
if feature.contains("soft-float") || feature.contains("retpoline-external-thunk") || *feature == "-sse" {
if feature.contains("soft-float")
|| feature.contains("retpoline-external-thunk")
|| *feature == "-sse"
{
return None;
}
if feature.starts_with('-') {
Some(format!("no{}", feature))
}
else if feature.starts_with('+') {
} else if feature.starts_with('+') {
Some(feature[1..].to_string())
}
else {
} else {
Some(feature.to_string())
}
})
.collect::<Vec<_>>()
.join(",");
if !target_features.is_empty() {
#[cfg(feature="master")]
#[cfg(feature = "master")]
func.add_attribute(FnAttribute::Target(&target_features));
}
}