allow LTO on proc-macro
crates with -Zdylib-lto
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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af78bae565
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bdd66b3f98
3 changed files with 18 additions and 3 deletions
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@ -37,6 +37,8 @@ codegen_llvm_lto_disallowed = lto can only be run for executables, cdylibs and s
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codegen_llvm_lto_dylib = lto cannot be used for `dylib` crate type without `-Zdylib-lto`
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codegen_llvm_lto_proc_macro = lto cannot be used for `proc-macro` crate type without `-Zdylib-lto`
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codegen_llvm_missing_features =
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add the missing features in a `target_feature` attribute
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@ -2,7 +2,7 @@ use crate::back::write::{
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self, bitcode_section_name, save_temp_bitcode, CodegenDiagnosticsStage, DiagnosticHandlers,
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};
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use crate::errors::{
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DynamicLinkingWithLTO, LlvmError, LtoBitcodeFromRlib, LtoDisallowed, LtoDylib,
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DynamicLinkingWithLTO, LlvmError, LtoBitcodeFromRlib, LtoDisallowed, LtoDylib, LtoProcMacro,
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};
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use crate::llvm::{self, build_string};
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use crate::{LlvmCodegenBackend, ModuleLlvm};
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@ -36,8 +36,12 @@ pub const THIN_LTO_KEYS_INCR_COMP_FILE_NAME: &str = "thin-lto-past-keys.bin";
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pub fn crate_type_allows_lto(crate_type: CrateType) -> bool {
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match crate_type {
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CrateType::Executable | CrateType::Dylib | CrateType::Staticlib | CrateType::Cdylib => true,
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CrateType::Rlib | CrateType::ProcMacro => false,
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CrateType::Executable
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| CrateType::Dylib
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| CrateType::Staticlib
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| CrateType::Cdylib
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| CrateType::ProcMacro => true,
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CrateType::Rlib => false,
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}
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}
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@ -87,6 +91,11 @@ fn prepare_lto(
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diag_handler.emit_err(LtoDylib);
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return Err(FatalError);
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}
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} else if *crate_type == CrateType::ProcMacro {
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if !cgcx.opts.unstable_opts.dylib_lto {
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diag_handler.emit_err(LtoProcMacro);
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return Err(FatalError);
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}
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}
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}
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@ -138,6 +138,10 @@ pub(crate) struct LtoDisallowed;
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#[diag(codegen_llvm_lto_dylib)]
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pub(crate) struct LtoDylib;
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#[derive(Diagnostic)]
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#[diag(codegen_llvm_lto_proc_macro)]
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pub(crate) struct LtoProcMacro;
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#[derive(Diagnostic)]
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#[diag(codegen_llvm_lto_bitcode_from_rlib)]
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pub(crate) struct LtoBitcodeFromRlib {
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