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Enable atomic cas for bpf targets

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This commit is contained in:
Tomer Zeitune 2022-11-27 00:35:52 +02:00
parent ba64ba8b0d
commit 11331b1030
1 changed files with 5 additions and 1 deletions
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6
compiler/rustc_target/src/spec/bpf_base.rs
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@ -6,7 +6,7 @@ pub fn opts(endian: Endian) -> TargetOptions {
allow_asm: true, allow_asm: true,
endian, endian,
linker_flavor: LinkerFlavor::Bpf, linker_flavor: LinkerFlavor::Bpf,
atomic_cas: false, atomic_cas: true,
dynamic_linking: true, dynamic_linking: true,
no_builtins: true, no_builtins: true,
panic_strategy: PanicStrategy::Abort, panic_strategy: PanicStrategy::Abort,
@ -19,6 +19,10 @@ pub fn opts(endian: Endian) -> TargetOptions {
obj_is_bitcode: true, obj_is_bitcode: true,
requires_lto: false, requires_lto: false,
singlethread: true, singlethread: true,
// When targeting the `v3` cpu in llvm, 32-bit atomics are also supported.
// But making this value change based on the target cpu can be mostly confusing
// and would require a bit of a refactor.
min_atomic_width: Some(64),
max_atomic_width: Some(64), max_atomic_width: Some(64),
..Default::default() ..Default::default()
} }