From ea12fbaa4299d98aa3fe49fea0191bdb415c91a9 Mon Sep 17 00:00:00 2001
From: "Wen-Heng (Jack) Chung" <whchung@gmail.com>
Date: Fri, 4 Jun 2021 19:36:21 +0000
Subject: [PATCH] Remove the undesirable LDS barrier within MFMA code emission
 hot loop.

---
 mlir/include/mlir/Dialect/MIOpen/LowerMIOpenOps.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/mlir/include/mlir/Dialect/MIOpen/LowerMIOpenOps.h b/mlir/include/mlir/Dialect/MIOpen/LowerMIOpenOps.h
index 9df86259e22a..32938ae976b8 100644
--- a/mlir/include/mlir/Dialect/MIOpen/LowerMIOpenOps.h
+++ b/mlir/include/mlir/Dialect/MIOpen/LowerMIOpenOps.h
@@ -7731,10 +7731,6 @@ struct XdlopsGemmV2RewritePattern
             ValueRange{loopKiv});
       }
 
-      // FIXME: See if it's possible to get rid of the this barrier.
-      // LDS barrier.
-      loopKb.create<miopen::LDSBarrierOp>(loc);
-
       SmallVector<Value, 4> mfmas;
       for (int64_t i = 0; i < vectorNumber; ++i) {
         auto vectorC = loopK.getRegionIterArgs()[i];