Revert "[AMD][Backend] Extend coverage of ConvertLayoutOpPermlaneSwap pattern (#7861)"

This reverts commit 5231471.

Author: anmyachev

test/Conversion/amd/mfma-shortcut.mlir

@@ -37,8 +37,8 @@ module attributes {"ttg.num-ctas" = 1 : i32, "ttg.num-warps" = 4 : i32, "ttg.thr
 #dotop0 = #ttg.dot_op<{opIdx = 0, parent = #mfma, kWidth=8}>
 
 module attributes {"ttg.num-ctas" = 1 : i32, "ttg.num-warps" = 4 : i32, "ttg.threads-per-warp" = 64 : i32} {
-  // GFX942-LABEL: mfma_dot_cvt_bf8_mfma16_v3
-  tt.func public @mfma_dot_cvt_bf8_mfma16_v3(%arg0: tensor<128x32xf8E5M2, #mfma>) {
+  // GFX942-LABEL: mfma_dot_cvt_bf8_mfma16
+  tt.func public @mfma_dot_cvt_bf8_mfma16(%arg0: tensor<128x32xf8E5M2, #mfma>) {
     // GFX942-NOT: store
     // GFX942-NOT: load
     // GFX942: rocdl.ds_bpermute
@@ -50,24 +50,6 @@ module attributes {"ttg.num-ctas" = 1 : i32, "ttg.num-warps" = 4 : i32, "ttg.thr
 
 // -----
 
-#mfma = #ttg.amd_mfma<{version = 4, warpsPerCTA = [4, 1], instrShape = [16, 16], isTransposed = true}>
-#dotop0 = #ttg.dot_op<{opIdx = 0, parent = #mfma, kWidth=8}>
-
-module attributes {"ttg.num-ctas" = 1 : i32, "ttg.num-warps" = 4 : i32, "ttg.threads-per-warp" = 64 : i32} {
-  // GFX950-LABEL: mfma_dot_cvt_bf8_mfma16_v4
-  tt.func public @mfma_dot_cvt_bf8_mfma16_v4(%arg0: tensor<128x32xf8E5M2, #mfma>) {
-    // GFX950-NOT: rocdl.ds_bpermute
-    // GFX950: llvm.call_intrinsic "llvm.amdgcn.permlane32.swap"
-    // GFX950: llvm.call_intrinsic "llvm.amdgcn.permlane16.swap"
-    // GFX950: llvm.call_intrinsic "llvm.amdgcn.permlane32.swap"
-    // GFX950: llvm.call_intrinsic "llvm.amdgcn.permlane16.swap"
-    %0 = ttg.convert_layout %arg0 : tensor<128x32xf8E5M2, #mfma> -> tensor<128x32xf8E5M2, #dotop0>
-    tt.return
-  }
-}
-
-// -----
-
 #blocked = #ttg.blocked<{sizePerThread = [1, 1], threadsPerWarp = [16, 4], warpsPerCTA = [4, 1], order = [0, 1]}>
 #linear = #ttg.linear<{register = [[0, 1], [0, 2], [0, 4], [0, 16], [0, 32], [0, 64]], lane = [[1, 0], [2, 0], [4, 0], [8, 0], [16, 0], [0, 8]], warp = [[32, 0], [64, 0]], block = []}>
 #mma = #ttg.amd_mfma<{version = 4, warpsPerCTA = [4, 1], instrShape = [32, 32], isTransposed = true}>