Rollup merge of rust-lang#57925 - fintelia:riscv-cas, r=nagisa

Enable RISC-V atomic compare and swap Fixes rust-lang#56564
Centril · Jan 27, 2019 · b3dbeee · b3dbeee
2 parents 93350f4 + 607c543
commit b3dbeee
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/librustc_target/spec/riscv32imac_unknown_none_elf.rs b/src/librustc_target/spec/riscv32imac_unknown_none_elf.rs
@@ -18,7 +18,7 @@ pub fn target() -> TargetResult {
             linker: Some("rust-lld".to_string()),
             cpu: "generic-rv32".to_string(),
             max_atomic_width: Some(32),
-            atomic_cas: false, // incomplete +a extension
+            atomic_cas: true,
             features: "+m,+a,+c".to_string(),
             executables: true,
             panic_strategy: PanicStrategy::Abort,