[Mlir-commits] [mlir] [ROCDL] Added BallotOp and lit test (PR #84856)

[llvmlistbot at llvm.org]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-mlir

@llvm/pr-subscribers-mlir-llvm

Author: Zahi Moudallal (zahimoud)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/84856.diff


2 Files Affected:

- (modified) mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td (+10) 
- (modified) mlir/test/Target/LLVMIR/rocdl.mlir (+7) 


``````````diff
diff --git a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
index 32b5a1c016b6f8..1a0b13e94cd7c0 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
@@ -158,6 +158,16 @@ Arguments<(ins I32:$index,
    }];
 }
 
+def ROCDL_BallotOp :
+  ROCDL_Op<"ballot">,
+  Results<(outs LLVM_Type:$res)>,
+  Arguments<(ins LLVM_Type:$pred)> {
+  string llvmBuilder = [{
+      $res = createIntrinsicCall(builder,
+            llvm::Intrinsic::amdgcn_ballot, {$pred});
+  }];
+  let hasCustomAssemblyFormat = 1;
+}
 
 //===----------------------------------------------------------------------===//
 // Thread index and Block index
diff --git a/mlir/test/Target/LLVMIR/rocdl.mlir b/mlir/test/Target/LLVMIR/rocdl.mlir
index d35acb0475e6f8..af16a6d325080a 100644
--- a/mlir/test/Target/LLVMIR/rocdl.mlir
+++ b/mlir/test/Target/LLVMIR/rocdl.mlir
@@ -88,6 +88,13 @@ llvm.func @rocdl.bpermute(%src : i32) -> i32 {
   llvm.return %0 : i32
 }
 
+llvm.func @rocdl.ballot(%pred : i1) -> i32 {
+  // CHECK-LABEL: rocdl.ballot
+  // CHECK: call i32 @llvm.amdgcn.ballot
+  %0 = rocdl.ballot %pred : (i1) -> i32
+  llvm.return %0 : i32
+}
+
 llvm.func @rocdl.waitcnt() {
   // CHECK-LABEL: rocdl.waitcnt
   // CHECK-NEXT: call void @llvm.amdgcn.s.waitcnt(i32 0)

``````````

</details>


https://github.com/llvm/llvm-project/pull/84856