================
@@ -48,6 +48,13 @@ def BPF_END : BPFArithOp<0xd>;
def BPF_XCHG : BPFArithOp<0xe>;
def BPF_CMPXCHG : BPFArithOp<0xf>;
+class BPFAtomicLoadStoreOp<bits<4> val> {
+ bits<4> Value = val;
+}
+
+def BPF_LOAD_ACQ : BPFAtomicLoadStoreOp<0x1>;
+def BPF_STORE_REL : BPFAtomicLoadStoreOp<0xb>;
----------------
yonghong-song wrote:
Currently, gcc/clang does support atomic 'mem *= r1' operations. So I tempt to
use 0x2. But based on your above explanation, I think your current using 0xb is
okay since there is no chance to have an atomic operation for mov.
https://github.com/llvm/llvm-project/pull/108636
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