Move all LLVM externs into the rustc_llvm crate in preparation for ctest

Author: Diggsey

Cargo.lock

@@ -3434,7 +3434,6 @@ dependencies = [
 name = "rustc_codegen_llvm"
 version = "0.0.0"
 dependencies = [
- "bitflags",
  "gimli",
  "itertools",
  "libc",
@@ -4014,8 +4013,14 @@ dependencies = [
 name = "rustc_llvm"
 version = "0.0.0"
 dependencies = [
+ "bitflags",
  "cc",
  "libc",
+ "rustc_codegen_ssa",
+ "rustc_macros",
+ "rustc_middle",
+ "rustc_session",
+ "rustc_target",
 ]
 
 [[package]]

compiler/rustc_codegen_llvm/Cargo.toml

@@ -8,7 +8,6 @@ test = false
 
 [dependencies]
 # tidy-alphabetical-start
-bitflags = "2.4.1"
 # To avoid duplicate dependencies, this should match the version of gimli used
 # by `rustc_codegen_ssa` via its `thorin-dwp` dependency.
 gimli = "0.31"
@@ -38,7 +37,7 @@ rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
 rustc_symbol_mangling = { path = "../rustc_symbol_mangling" }
 rustc_target = { path = "../rustc_target" }
-serde = { version = "1", features = [ "derive" ]}
+serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 smallvec = { version = "1.8.1", features = ["union", "may_dangle"] }
 tracing = "0.1"

compiler/rustc_codegen_llvm/src/abi.rs

@@ -23,10 +23,9 @@ use smallvec::SmallVec;
 use crate::attributes::{self, llfn_attrs_from_instance};
 use crate::builder::Builder;
 use crate::context::CodegenCx;
-use crate::llvm::{self, Attribute, AttributePlace};
+use crate::llvm::{self, Attribute, AttributeExt as _, AttributePlace, Value};
 use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
-use crate::value::Value;
 
 trait ArgAttributesExt {
     fn apply_attrs_to_llfn(&self, idx: AttributePlace, cx: &CodegenCx<'_, '_>, llfn: &Value);
@@ -644,8 +643,12 @@ impl AbiBuilderMethods for Builder<'_, '_, '_> {
     }
 }
 
-impl llvm::CallConv {
-    pub(crate) fn from_conv(conv: CanonAbi, arch: &str) -> Self {
+pub(crate) trait CallConvExt {
+    fn from_conv(conv: CanonAbi, arch: &str) -> llvm::CallConv;
+}
+
+impl CallConvExt for llvm::CallConv {
+    fn from_conv(conv: CanonAbi, arch: &str) -> Self {
         match conv {
             CanonAbi::C | CanonAbi::Rust => llvm::CCallConv,
             CanonAbi::RustCold => llvm::PreserveMost,

compiler/rustc_codegen_llvm/src/allocator.rs

@@ -11,7 +11,7 @@ use rustc_symbol_mangling::mangle_internal_symbol;
 
 use crate::builder::SBuilder;
 use crate::declare::declare_simple_fn;
-use crate::llvm::{self, False, True, Type};
+use crate::llvm::{self, AttributeExt as _, False, True, Type};
 use crate::{SimpleCx, attributes, debuginfo};
 
 pub(crate) unsafe fn codegen(

compiler/rustc_codegen_llvm/src/asm.rs

@@ -16,9 +16,9 @@ use tracing::debug;
 use crate::builder::Builder;
 use crate::common::Funclet;
 use crate::context::CodegenCx;
+use crate::llvm::{AttributeExt as _, Value};
 use crate::type_::Type;
 use crate::type_of::LayoutLlvmExt;
-use crate::value::Value;
 use crate::{attributes, llvm};
 
 impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {

compiler/rustc_codegen_llvm/src/attributes.rs

@@ -12,8 +12,10 @@ use smallvec::SmallVec;
 use crate::context::CodegenCx;
 use crate::errors::SanitizerMemtagRequiresMte;
 use crate::llvm::AttributePlace::Function;
-use crate::llvm::{self, AllocKindFlags, Attribute, AttributeKind, AttributePlace, MemoryEffects};
-use crate::value::Value;
+use crate::llvm::{
+    self, AllocKindFlags, Attribute, AttributeExt as _, AttributeKind, AttributePlace,
+    MemoryEffects, Value,
+};
 use crate::{attributes, llvm_util};
 
 pub(crate) fn apply_to_llfn(llfn: &Value, idx: AttributePlace, attrs: &[&Attribute]) {

compiler/rustc_codegen_llvm/src/back/archive.rs

@@ -11,7 +11,7 @@ use rustc_codegen_ssa::back::archive::{
 use rustc_session::Session;
 
 use crate::llvm::archive_ro::{ArchiveRO, Child};
-use crate::llvm::{self, ArchiveKind, last_error};
+use crate::llvm::{self, LLVMRustResultExt as _, last_error, parse_archive_kind};
 
 /// Helper for adding many files to an archive.
 #[must_use = "must call build() to finish building the archive"]
@@ -182,8 +182,7 @@ fn llvm_is_ec_object_file(buf: &[u8]) -> bool {
 impl<'a> LlvmArchiveBuilder<'a> {
     fn build_with_llvm(&mut self, output: &Path) -> io::Result<bool> {
         let kind = &*self.sess.target.archive_format;
-        let kind = kind
-            .parse::<ArchiveKind>()
+        let kind = parse_archive_kind(kind)
             .map_err(|_| kind)
             .unwrap_or_else(|kind| self.sess.dcx().emit_fatal(UnknownArchiveKind { kind }));
 

compiler/rustc_codegen_llvm/src/back/lto.rs

@@ -29,7 +29,7 @@ use crate::errors::{
     DynamicLinkingWithLTO, LlvmError, LtoBitcodeFromRlib, LtoDisallowed, LtoDylib, LtoProcMacro,
 };
 use crate::llvm::AttributePlace::Function;
-use crate::llvm::{self, build_string};
+use crate::llvm::{self, AttributeExt as _, build_string};
 use crate::{LlvmCodegenBackend, ModuleLlvm, SimpleCx, attributes};
 
 /// We keep track of the computed LTO cache keys from the previous

compiler/rustc_codegen_llvm/src/back/write.rs

@@ -41,8 +41,8 @@ use crate::errors::{
     WithLlvmError, WriteBytecode,
 };
 use crate::llvm::diagnostic::OptimizationDiagnosticKind::*;
-use crate::llvm::{self, DiagnosticInfo};
-use crate::type_::Type;
+use crate::llvm::{self, DiagnosticInfo, LLVMRustResultExt as _};
+use crate::type_::type_ptr_llcx;
 use crate::{LlvmCodegenBackend, ModuleLlvm, base, common, llvm_util};
 
 pub(crate) fn llvm_err<'a>(dcx: DiagCtxtHandle<'_>, err: LlvmError<'a>) -> FatalError {
@@ -1174,7 +1174,7 @@ fn create_msvc_imps(
     // underscores added in front).
     let prefix = if cgcx.target_arch == "x86" { "\x01__imp__" } else { "\x01__imp_" };
 
-    let ptr_ty = Type::ptr_llcx(llcx);
+    let ptr_ty = type_ptr_llcx(llcx);
     let globals = base::iter_globals(llmod)
         .filter(|&val| {
             llvm::get_linkage(val) == llvm::Linkage::ExternalLinkage && !llvm::is_declaration(val)

compiler/rustc_codegen_llvm/src/base.rs

@@ -29,7 +29,7 @@ use rustc_target::spec::SanitizerSet;
 use super::ModuleLlvm;
 use crate::builder::Builder;
 use crate::context::CodegenCx;
-use crate::value::Value;
+use crate::llvm::Value;
 use crate::{attributes, llvm};
 
 pub(crate) struct ValueIter<'ll> {