[NFC] `using namespace Abstract` to make matchers more compact (#3284)

This change makes matchers in OptimizeInstructions more compact and readable by
removing the explicit `Abstract::` namespace from individual operations. In some
cases, this makes multi-line matcher expressions fit on a single line.

This change is only possible because it also adds an explicit "RMW" prefix to
each element of the `AtomicRMWOp` enumeration. Without that, their names
conflicted with the names of Abstract ops.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/wasm.h b/src/wasm.h
index e2b97204b..048b6c584 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -432,7 +432,7 @@ enum BinaryOp {
   InvalidBinary
 };
 
-enum AtomicRMWOp { Add, Sub, And, Or, Xor, Xchg };
+enum AtomicRMWOp { RMWAdd, RMWSub, RMWAnd, RMWOr, RMWXor, RMWXchg };
 
 enum SIMDExtractOp {
   ExtractLaneSVecI8x16,