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Code Issues Releases Activity

Use LLVM-C APIs for getting/setting visibility

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This commit is contained in:
Zalathar 2024-10-25 22:26:15 +11:00
parent 96993a9b5e
commit d976ca8701
4 changed files with 8 additions and 45 deletions
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8
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
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@ -161,9 +161,9 @@ pub enum Linkage {
LinkerPrivateWeakLinkage = 16,
}
// LLVMRustVisibility
/// Must match the layout of `LLVMVisibility`.
#[repr(C)]
#[derive(Copy, Clone, PartialEq)]
#[derive(Copy, Clone, PartialEq, TryFromU32)]
pub enum Visibility {
Default = 0,
Hidden = 1,
@ -984,6 +984,8 @@ unsafe extern "C" {
pub fn LLVMGetLinkage(Global: &Value) -> RawEnum<Linkage>;
pub fn LLVMSetLinkage(Global: &Value, RustLinkage: Linkage);
pub fn LLVMSetSection(Global: &Value, Section: *const c_char);
pub fn LLVMGetVisibility(Global: &Value) -> RawEnum<Visibility>;
pub fn LLVMSetVisibility(Global: &Value, Viz: Visibility);
pub fn LLVMGetAlignment(Global: &Value) -> c_uint;
pub fn LLVMSetAlignment(Global: &Value, Bytes: c_uint);
pub fn LLVMSetDLLStorageClass(V: &Value, C: DLLStorageClass);
@ -1559,8 +1561,6 @@ unsafe extern "C" {
) -> bool;
// Operations on global variables, functions, and aliases (globals)
pub fn LLVMRustGetVisibility(Global: &Value) -> Visibility;
pub fn LLVMRustSetVisibility(Global: &Value, Viz: Visibility);
pub fn LLVMRustSetDSOLocal(Global: &Value, is_dso_local: bool);
// Operations on global variables

4
compiler/rustc_codegen_llvm/src/llvm/mod.rs
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@ -243,12 +243,12 @@ pub fn set_linkage(llglobal: &Value, linkage: Linkage) {
}
pub fn get_visibility(llglobal: &Value) -> Visibility {
unsafe { LLVMRustGetVisibility(llglobal) }
unsafe { LLVMGetVisibility(llglobal) }.to_rust()
}
pub fn set_visibility(llglobal: &Value, visibility: Visibility) {
unsafe {
LLVMRustSetVisibility(llglobal, visibility);
LLVMSetVisibility(llglobal, visibility);
}
}

39
compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
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@ -1646,45 +1646,6 @@ extern "C" bool LLVMRustConstInt128Get(LLVMValueRef CV, bool sext,
return true;
}
enum class LLVMRustVisibility {
Default = 0,
Hidden = 1,
Protected = 2,
};
static LLVMRustVisibility toRust(LLVMVisibility Vis) {
switch (Vis) {
case LLVMDefaultVisibility:
return LLVMRustVisibility::Default;
case LLVMHiddenVisibility:
return LLVMRustVisibility::Hidden;
case LLVMProtectedVisibility:
return LLVMRustVisibility::Protected;
}
report_fatal_error("Invalid LLVMRustVisibility value!");
}
static LLVMVisibility fromRust(LLVMRustVisibility Vis) {
switch (Vis) {
case LLVMRustVisibility::Default:
return LLVMDefaultVisibility;
case LLVMRustVisibility::Hidden:
return LLVMHiddenVisibility;
case LLVMRustVisibility::Protected:
return LLVMProtectedVisibility;
}
report_fatal_error("Invalid LLVMRustVisibility value!");
}
extern "C" LLVMRustVisibility LLVMRustGetVisibility(LLVMValueRef V) {
return toRust(LLVMGetVisibility(V));
}
extern "C" void LLVMRustSetVisibility(LLVMValueRef V,
LLVMRustVisibility RustVisibility) {
LLVMSetVisibility(V, fromRust(RustVisibility));
}
extern "C" void LLVMRustSetDSOLocal(LLVMValueRef Global, bool is_dso_local) {
unwrap<GlobalValue>(Global)->setDSOLocal(is_dso_local);
}

2
compiler/rustc_macros/src/try_from.rs
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@ -34,6 +34,8 @@ pub(crate) fn try_from_u32(s: Structure<'_>) -> TokenStream {
.iter()
.map(|v| v.construct(|_, _| -> TokenStream { unreachable!() }))
.collect::<Vec<_>>();
// FIXME(edition_2024): Fix the `keyword_idents_2024` lint to not trigger here?
#[allow(keyword_idents_2024)]
s.gen_impl(quote! {
// The surrounding code might have shadowed these identifiers.
use ::core::convert::TryFrom;