[Mlir-commits] [mlir] [ROCDL] Added asynccnt wait ops (gfx1250) (PR #163533)

[llvmlistbot at llvm.org]

https://github.com/ravil-mobile created https://github.com/llvm/llvm-project/pull/163533

This patch introduces some missing `s.wait.asynccnt` instructions in the ROCDL dialect

>From b4ec7ef13a3777f0cf052d6ab7400091a81d326c Mon Sep 17 00:00:00 2001
From: ravil-mobile <ravil.aviva.com at gmail.com>
Date: Wed, 15 Oct 2025 09:20:38 +0000
Subject: [PATCH] [ROCDL] Added asynccnt wait ops (gfx1250)

---
 mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td | 13 +++++++++++++
 mlir/test/Dialect/LLVMIR/rocdl.mlir          |  8 ++++++++
 mlir/test/Target/LLVMIR/rocdl.mlir           |  7 +++++++
 3 files changed, 28 insertions(+)

diff --git a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
index 6925cec42b5b4..c0595e562114c 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/ROCDLOps.td
@@ -412,6 +412,19 @@ def ROCDL_WaitExpcntOp: ROCDL_ConcreteNonMemIntrOp<"s.wait.expcnt", [], 0, [0],
   let assemblyFormat = "$count attr-dict";
 }
 
+def ROCDL_WaitAsynccntOp: ROCDL_ConcreteNonMemIntrOp<"s.wait.asynccnt", [], 0, [0], ["count"]>,
+  Arguments<(ins I16Attr:$count)> {
+  let summary = "Wait until ASYNCCNT is less than or equal to `count`";
+  let description = [{
+      Wait for the counter specified to be less-than or equal-to the `count`
+      before continuing.
+
+      Available on gfx12+.
+  }];
+  let results = (outs);
+  let assemblyFormat = "$count attr-dict";
+}
+
 def ROCDL_SetPrioOp : ROCDL_ConcreteNonMemIntrOp<"s.setprio", [], 0, [0], ["priority"]>,
   Arguments<(ins I16Attr:$priority)> {
   let assemblyFormat = "$priority attr-dict";
diff --git a/mlir/test/Dialect/LLVMIR/rocdl.mlir b/mlir/test/Dialect/LLVMIR/rocdl.mlir
index 358bd332883f2..cd403440db9e2 100644
--- a/mlir/test/Dialect/LLVMIR/rocdl.mlir
+++ b/mlir/test/Dialect/LLVMIR/rocdl.mlir
@@ -1035,6 +1035,14 @@ llvm.func @rocdl.s.wait.expcnt() {
   llvm.return
 }
 
+llvm.func @rocdl.s.wait.asynccnt() {
+  // CHECK-LABEL: rocdl.s.wait.asynccnt
+  // CHECK: rocdl.s.wait.asynccnt 0
+  rocdl.s.wait.asynccnt 0
+  llvm.return
+}
+
+
 // -----
 
 llvm.func @rocdl.readfirstlane(%src : f32) -> f32 {
diff --git a/mlir/test/Target/LLVMIR/rocdl.mlir b/mlir/test/Target/LLVMIR/rocdl.mlir
index fdd2c91f6a5b5..6d7d39a2c7edf 100644
--- a/mlir/test/Target/LLVMIR/rocdl.mlir
+++ b/mlir/test/Target/LLVMIR/rocdl.mlir
@@ -276,6 +276,13 @@ llvm.func @rocdl.s.wait.expcnt() {
   llvm.return
 }
 
+llvm.func @rocdl.s.wait.asynccnt() {
+  // CHECK-LABEL: rocdl.s.wait.asynccnt
+  // CHECK-NEXT: call void @llvm.amdgcn.s.wait.asynccnt(i16 0)
+  rocdl.s.wait.asynccnt 0
+  llvm.return
+}
+
 llvm.func @rocdl.setprio() {
   // CHECK: call void @llvm.amdgcn.s.setprio(i16 0)
   rocdl.s.setprio 0