bjoernager/rust
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Set dso_local for more items

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This commit is contained in:
Boris-Chengbiao Zhou 2021-05-14 03:47:41 +02:00
parent 46985d5d91
commit f7ed4a799a
4 changed files with 72 additions and 1 deletions
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13
compiler/rustc_codegen_llvm/src/consts.rs
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@ -17,6 +17,7 @@ use rustc_middle::mir::mono::MonoItem;
use rustc_middle::ty::{self, Instance, Ty};
use rustc_middle::{bug, span_bug};
use rustc_target::abi::{AddressSpace, Align, HasDataLayout, LayoutOf, Primitive, Scalar, Size};
use rustc_target::spec::RelocModel;
use tracing::debug;
pub fn const_alloc_to_llvm(cx: &CodegenCx<'ll, '_>, alloc: &Allocation) -> &'ll Value {
@ -282,6 +283,12 @@ impl CodegenCx<'ll, 'tcx> {
}
}
if self.tcx.sess.relocation_model() == RelocModel::Static {
unsafe {
llvm::LLVMRustSetDSOLocal(g, true);
}
}
self.instances.borrow_mut().insert(instance, g);
g
}
@ -363,6 +370,12 @@ impl StaticMethods for CodegenCx<'ll, 'tcx> {
set_global_alignment(&self, g, self.align_of(ty));
llvm::LLVMSetInitializer(g, v);
let linkage = base::linkage_from_llvm(llvm::LLVMRustGetLinkage(g));
let visibility = base::visibility_from_llvm(llvm::LLVMRustGetVisibility(g));
if self.should_assume_dso_local(linkage, visibility) {
llvm::LLVMRustSetDSOLocal(g, true);
}
// As an optimization, all shared statics which do not have interior
// mutability are placed into read-only memory.
if !is_mutable && self.type_is_freeze(ty) {