auto merge of #12878 : crabtw/rust/mips, r=alexcrichton

I ignored AtomicU64 methods on MIPS target
because libgcc doesn't implement MIPS32 64-bit atomic operations.
Otherwise it would cause link failure.

By the way, the patched LLVM doesn't have MIPS split stack anymore.
Should I file an issue about that?

1 files changed, 4 insertions, 0 deletions

diff --git a/src/libstd/sync/atomics.rs b/src/libstd/sync/atomics.rs
index b4d465c0397..b38a5aed16f 100644
--- a/src/libstd/sync/atomics.rs
+++ b/src/libstd/sync/atomics.rs
@@ -225,6 +225,10 @@ impl AtomicInt {
     }
 }
 
+// temporary workaround
+// it causes link failure on MIPS target
+// libgcc doesn't implement 64-bit atomic operations for MIPS32
+#[cfg(not(target_arch = "mips"))]
 impl AtomicU64 {
     pub fn new(v: u64) -> AtomicU64 {
         AtomicU64 { v:v, nopod: marker::NoPod }