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Use LLVM C-API to build atomic cmpxchg and fence

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This commit is contained in:
Josh Stone 2022-09-18 15:49:49 -07:00
parent a37499ae66
commit fac12e25dd
3 changed files with 25 additions and 76 deletions
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36
compiler/rustc_codegen_llvm/src/llvm/ffi.rs
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@ -400,27 +400,6 @@ impl AtomicOrdering {
}
}
/// LLVMRustSynchronizationScope
#[derive(Copy, Clone)]
#[repr(C)]
pub enum SynchronizationScope {
SingleThread,
CrossThread,
}
impl SynchronizationScope {
pub fn from_generic(sc: rustc_codegen_ssa::common::SynchronizationScope) -> Self {
match sc {
rustc_codegen_ssa::common::SynchronizationScope::SingleThread => {
SynchronizationScope::SingleThread
}
rustc_codegen_ssa::common::SynchronizationScope::CrossThread => {
SynchronizationScope::CrossThread
}
}
}
}
/// LLVMRustFileType
#[derive(Copy, Clone)]
#[repr(C)]
@ -1782,16 +1761,18 @@ extern "C" {
Order: AtomicOrdering,
) -> &'a Value;
pub fn LLVMRustBuildAtomicCmpXchg<'a>(
pub fn LLVMBuildAtomicCmpXchg<'a>(
B: &Builder<'a>,
LHS: &'a Value,
CMP: &'a Value,
RHS: &'a Value,
Order: AtomicOrdering,
FailureOrder: AtomicOrdering,
Weak: Bool,
SingleThreaded: Bool,
) -> &'a Value;
pub fn LLVMSetWeak(CmpXchgInst: &Value, IsWeak: Bool);
pub fn LLVMBuildAtomicRMW<'a>(
B: &Builder<'a>,
Op: AtomicRmwBinOp,
@ -1801,11 +1782,12 @@ extern "C" {
SingleThreaded: Bool,
) -> &'a Value;
pub fn LLVMRustBuildAtomicFence(
B: &Builder<'_>,
pub fn LLVMBuildFence<'a>(
B: &Builder<'a>,
Order: AtomicOrdering,
Scope: SynchronizationScope,
);
SingleThreaded: Bool,
Name: *const c_char,
) -> &'a Value;
/// Writes a module to the specified path. Returns 0 on success.
pub fn LLVMWriteBitcodeToFile(M: &Module, Path: *const c_char) -> c_int;