From 804e93871dfc879380fdd3bcde6c6958466814af Mon Sep 17 00:00:00 2001 From: Matthew Jasper Date: Sat, 8 Apr 2023 20:01:14 +0100 Subject: [PATCH] Move SIMD layout errors to `SessionDiagnostic` --- compiler/rustc_ty_utils/messages.ftl | 8 ++++++ compiler/rustc_ty_utils/src/errors.rs | 26 ++++++++++++++++++ compiler/rustc_ty_utils/src/layout.rs | 39 +++++++++++++-------------- compiler/rustc_ty_utils/src/lib.rs | 2 ++ 4 files changed, 55 insertions(+), 20 deletions(-) diff --git a/compiler/rustc_ty_utils/messages.ftl b/compiler/rustc_ty_utils/messages.ftl index e0aa27b73f6..a1e97bb95bc 100644 --- a/compiler/rustc_ty_utils/messages.ftl +++ b/compiler/rustc_ty_utils/messages.ftl @@ -47,3 +47,11 @@ ty_utils_inline_asm_not_supported = assembly is not supported in generic constan ty_utils_operation_not_supported = unsupported operation in generic constants ty_utils_unexpected_fnptr_associated_item = `FnPtr` trait with unexpected associated item + +ty_utils_zero_length_simd_type = monomorphising SIMD type `{$ty}` of zero length + +ty_utils_multiple_array_fields_simd_type = monomorphising SIMD type `{$ty}` with more than one array field + +ty_utils_oversized_simd_type = monomorphising SIMD type `{$ty}` of length greater than {$max_lanes} + +ty_utils_non_primative_simd_type = monomorphising SIMD type `{$ty}` with a non-primitive-scalar (integer/float/pointer) element type `{$e_ty}` diff --git a/compiler/rustc_ty_utils/src/errors.rs b/compiler/rustc_ty_utils/src/errors.rs index c05815d510a..3db3c98e9e2 100644 --- a/compiler/rustc_ty_utils/src/errors.rs +++ b/compiler/rustc_ty_utils/src/errors.rs @@ -74,3 +74,29 @@ pub struct UnexpectedFnPtrAssociatedItem { #[primary_span] pub span: Span, } + +#[derive(Diagnostic)] +#[diag(ty_utils_zero_length_simd_type)] +pub struct ZeroLengthSimdType<'tcx> { + pub ty: Ty<'tcx>, +} + +#[derive(Diagnostic)] +#[diag(ty_utils_multiple_array_fields_simd_type)] +pub struct MultipleArrayFieldsSimdType<'tcx> { + pub ty: Ty<'tcx>, +} + +#[derive(Diagnostic)] +#[diag(ty_utils_oversized_simd_type)] +pub struct OversizedSimdType<'tcx> { + pub ty: Ty<'tcx>, + pub max_lanes: u64, +} + +#[derive(Diagnostic)] +#[diag(ty_utils_non_primative_simd_type)] +pub struct NonPrimitiveSimdType<'tcx> { + pub ty: Ty<'tcx>, + pub e_ty: Ty<'tcx>, +} diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs index d4420ec88db..d08877233b3 100644 --- a/compiler/rustc_ty_utils/src/layout.rs +++ b/compiler/rustc_ty_utils/src/layout.rs @@ -17,6 +17,9 @@ use rustc_target::abi::*; use std::fmt::Debug; use std::iter; +use crate::errors::{ + MultipleArrayFieldsSimdType, NonPrimitiveSimdType, OversizedSimdType, ZeroLengthSimdType, +}; use crate::layout_sanity_check::sanity_check_layout; pub fn provide(providers: &mut ty::query::Providers) { @@ -294,6 +297,8 @@ fn layout_of_uncached<'tcx>( return Err(LayoutError::Unknown(ty)); } + let fields = &def.non_enum_variant().fields; + // Supported SIMD vectors are homogeneous ADTs with at least one field: // // * #[repr(simd)] struct S(T, T, T, T); @@ -304,18 +309,22 @@ fn layout_of_uncached<'tcx>( // SIMD vectors with zero fields are not supported. // (should be caught by typeck) - if def.non_enum_variant().fields.is_empty() { - tcx.sess.fatal(&format!("monomorphising SIMD type `{}` of zero length", ty)); + if fields.is_empty() { + tcx.sess.emit_fatal(ZeroLengthSimdType { ty }) } // Type of the first ADT field: - let f0_ty = def.non_enum_variant().fields[FieldIdx::from_u32(0)].ty(tcx, substs); + let f0_ty = fields[FieldIdx::from_u32(0)].ty(tcx, substs); // Heterogeneous SIMD vectors are not supported: // (should be caught by typeck) - for fi in &def.non_enum_variant().fields { + for fi in fields { if fi.ty(tcx, substs) != f0_ty { - tcx.sess.fatal(&format!("monomorphising heterogeneous SIMD type `{}`", ty)); + tcx.sess.delay_span_bug( + DUMMY_SP, + "#[repr(simd)] was applied to an ADT with hetrogeneous field type", + ); + return Err(LayoutError::Unknown(ty)); } } @@ -330,12 +339,9 @@ fn layout_of_uncached<'tcx>( // First ADT field is an array: // SIMD vectors with multiple array fields are not supported: - // (should be caught by typeck) + // Can't be caught by typeck with a generic simd type. if def.non_enum_variant().fields.len() != 1 { - tcx.sess.fatal(&format!( - "monomorphising SIMD type `{}` with more than one array field", - ty - )); + tcx.sess.emit_fatal(MultipleArrayFieldsSimdType { ty }); } // Extract the number of elements from the layout of the array field: @@ -355,12 +361,9 @@ fn layout_of_uncached<'tcx>( // // Can't be caught in typeck if the array length is generic. if e_len == 0 { - tcx.sess.fatal(&format!("monomorphising SIMD type `{}` of zero length", ty)); + tcx.sess.emit_fatal(ZeroLengthSimdType { ty }); } else if e_len > MAX_SIMD_LANES { - tcx.sess.fatal(&format!( - "monomorphising SIMD type `{}` of length greater than {}", - ty, MAX_SIMD_LANES, - )); + tcx.sess.emit_fatal(OversizedSimdType { ty, max_lanes: MAX_SIMD_LANES }); } // Compute the ABI of the element type: @@ -368,11 +371,7 @@ fn layout_of_uncached<'tcx>( let Abi::Scalar(e_abi) = e_ly.abi else { // This error isn't caught in typeck, e.g., if // the element type of the vector is generic. - tcx.sess.fatal(&format!( - "monomorphising SIMD type `{}` with a non-primitive-scalar \ - (integer/float/pointer) element type `{}`", - ty, e_ty - )) + tcx.sess.emit_fatal(NonPrimitiveSimdType {ty, e_ty }); }; // Compute the size and alignment of the vector: diff --git a/compiler/rustc_ty_utils/src/lib.rs b/compiler/rustc_ty_utils/src/lib.rs index 9195964a2f3..2613445f39b 100644 --- a/compiler/rustc_ty_utils/src/lib.rs +++ b/compiler/rustc_ty_utils/src/lib.rs @@ -10,6 +10,8 @@ #![feature(never_type)] #![feature(box_patterns)] #![recursion_limit = "256"] +#![deny(rustc::untranslatable_diagnostic)] +#![deny(rustc::diagnostic_outside_of_impl)] #[macro_use] extern crate rustc_middle;