bjoernager/rust
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Merge pull request #353 from rust-lang/fix/int-types-alignment

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Fix/int types alignment
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antoyo 2023-10-17 21:30:47 -04:00 • committed by GitHub
commit d64662ff3e
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4 changed files with 46 additions and 21 deletions
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9
src/abi.rs
View file

@ -1,4 +1,6 @@
use gccjit::{FnAttribute, ToLValue, ToRValue, Type};
#[cfg(feature = "master")]
use gccjit::FnAttribute;
use gccjit::{ToLValue, ToRValue, Type};
use rustc_codegen_ssa::traits::{AbiBuilderMethods, BaseTypeMethods};
use rustc_data_structures::fx::FxHashSet;
use rustc_middle::bug;
@ -101,6 +103,7 @@ pub struct FnAbiGcc<'gcc> {
pub arguments_type: Vec<Type<'gcc>>,
pub is_c_variadic: bool,
pub on_stack_param_indices: FxHashSet<usize>,
#[cfg(feature = "master")]
pub fn_attributes: Vec<FnAttribute<'gcc>>,
}
@ -129,6 +132,7 @@ impl<'gcc, 'tcx> FnAbiGccExt<'gcc, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
cx.type_void()
}
};
#[cfg(feature = "master")]
let mut non_null_args = Vec::new();
#[cfg(feature = "master")]
@ -190,14 +194,13 @@ impl<'gcc, 'tcx> FnAbiGccExt<'gcc, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
} else {
vec![FnAttribute::NonNull(non_null_args)]
};
#[cfg(not(feature = "master"))]
let fn_attrs = Vec::new();
FnAbiGcc {
return_type,
arguments_type: argument_tys,
is_c_variadic: self.c_variadic,
on_stack_param_indices,
#[cfg(feature = "master")]
fn_attributes: fn_attrs,
}
}

16
src/common.rs
View file

@ -424,35 +424,35 @@ impl<'gcc, 'tcx> TypeReflection<'gcc, 'tcx> for Type<'gcc> {
}
fn is_i8(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.i8_type
self.is_compatible_with(cx.i8_type)
}
fn is_u8(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.u8_type
self.is_compatible_with(cx.u8_type)
}
fn is_i16(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.i16_type
self.is_compatible_with(cx.i16_type)
}
fn is_u16(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.u16_type
self.is_compatible_with(cx.u16_type)
}
fn is_i32(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.i32_type
self.is_compatible_with(cx.i32_type)
}
fn is_u32(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.u32_type
self.is_compatible_with(cx.u32_type)
}
fn is_i64(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.i64_type
self.is_compatible_with(cx.i64_type)
}
fn is_u64(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {
self.unqualified() == cx.u64_type
self.is_compatible_with(cx.u64_type)
}
fn is_i128(&self, cx: &CodegenCx<'gcc, 'tcx>) -> bool {

40
src/context.rs
View file

@ -129,19 +129,39 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
pub fn new(context: &'gcc Context<'gcc>, codegen_unit: &'tcx CodegenUnit<'tcx>, tcx: TyCtxt<'tcx>, supports_128bit_integers: bool) -> Self {
let check_overflow = tcx.sess.overflow_checks();
let i8_type = context.new_c_type(CType::Int8t);
let i16_type = context.new_c_type(CType::Int16t);
let i32_type = context.new_c_type(CType::Int32t);
let i64_type = context.new_c_type(CType::Int64t);
let u8_type = context.new_c_type(CType::UInt8t);
let u16_type = context.new_c_type(CType::UInt16t);
let u32_type = context.new_c_type(CType::UInt32t);
let u64_type = context.new_c_type(CType::UInt64t);
let create_type = |ctype, rust_type| {
let layout = tcx.layout_of(ParamEnv::reveal_all().and(rust_type)).unwrap();
let align = layout.align.abi.bytes();
#[cfg(feature="master")]
{
context.new_c_type(ctype).get_aligned(align)
}
#[cfg(not(feature="master"))]
{
// Since libgccjit 12 doesn't contain the fix to compare aligned integer types,
// only align u128 and i128.
if layout.ty.int_size_and_signed(tcx).0.bytes() == 16 {
context.new_c_type(ctype).get_aligned(align)
}
else {
context.new_c_type(ctype)
}
}
};
let i8_type = create_type(CType::Int8t, tcx.types.i8);
let i16_type = create_type(CType::Int16t, tcx.types.i16);
let i32_type = create_type(CType::Int32t, tcx.types.i32);
let i64_type = create_type(CType::Int64t, tcx.types.i64);
let u8_type = create_type(CType::UInt8t, tcx.types.u8);
let u16_type = create_type(CType::UInt16t, tcx.types.u16);
let u32_type = create_type(CType::UInt32t, tcx.types.u32);
let u64_type = create_type(CType::UInt64t, tcx.types.u64);
let (i128_type, u128_type) =
if supports_128bit_integers {
let i128_type = context.new_c_type(CType::Int128t).get_aligned(8); // TODO(antoyo): should the alignment be hard-coded?;
let u128_type = context.new_c_type(CType::UInt128t).get_aligned(8); // TODO(antoyo): should the alignment be hard-coded?;
let i128_type = create_type(CType::Int128t, tcx.types.i128);
let u128_type = create_type(CType::UInt128t, tcx.types.u128);
(i128_type, u128_type)
}
else {

2
src/declare.rs
View file

@ -85,10 +85,12 @@ impl<'gcc, 'tcx> CodegenCx<'gcc, 'tcx> {
arguments_type,
is_c_variadic,
on_stack_param_indices,
#[cfg(feature="master")]
fn_attributes,
} = fn_abi.gcc_type(self);
let func = declare_raw_fn(self, name, () /*fn_abi.llvm_cconv()*/, return_type, &arguments_type, is_c_variadic);
self.on_stack_function_params.borrow_mut().insert(func, on_stack_param_indices);
#[cfg(feature="master")]
for fn_attr in fn_attributes {
func.add_attribute(fn_attr);
}