[mlir] Fix a warning

kazutakahirata · IanWood1 · commit fa34e1be1bf8 · 2025-05-06T08:52:56.000-07:00
This patch fixes:

  mlir/lib/Conversion/GPUToROCDL/LowerGpuOpsToROCDLOps.cpp:170:5:
  error: default label in switch which covers all enumeration values
  [-Werror,-Wcovered-switch-default]
diff --git a/mlir/lib/Conversion/GPUToROCDL/LowerGpuOpsToROCDLOps.cpp b/mlir/lib/Conversion/GPUToROCDL/LowerGpuOpsToROCDLOps.cpp
@@ -215,8 +215,6 @@ struct GPUShuffleOpLowering : public ConvertOpToLLVMPattern<gpu::ShuffleOp> {
     case gpu::ShuffleMode::IDX:
       dstLane = adaptor.getOffset();
       break;
-    default:
-      return failure();
     }
     Value isActiveSrcLane = rewriter.create<LLVM::ICmpOp>(
         loc, LLVM::ICmpPredicate::slt, dstLane, widthOrZeroIfOutside);

Original file line number	Diff line number	Diff line change
`@@ -215,8 +215,6 @@ struct GPUShuffleOpLowering : public ConvertOpToLLVMPattern<gpu::ShuffleOp> {`
`215`	`215`	`case gpu::ShuffleMode::IDX:`
`216`	`216`	`dstLane = adaptor.getOffset();`
`217`	`217`	`break;`
`218`		`- default:`
`219`		`- return failure();`
`220`	`218`	`}`
`221`	`219`	`Value isActiveSrcLane = rewriter.create<LLVM::ICmpOp>(`
`222`	`220`	`loc, LLVM::ICmpPredicate::slt, dstLane, widthOrZeroIfOutside);`