[clang] [llvm] [mlir] [Flang][OpenMP] Enable no-loop kernels (PR #155818)

[Dominik Adamski via llvm-commits]

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@@ -2106,6 +2106,29 @@ Operation *TargetOp::getInnermostCapturedOmpOp() {
       });
 }
 
+/// Check if we can promote SPMD kernel to No-Loop kernel
+static bool canPromoteToNoLoop(Operation *capturedOp, TeamsOp teamsOp,
+                               WsloopOp *wsLoopOp) {
+  // num_teams clause can break no-loop teams/threads assumption
+  if (teamsOp.getNumTeamsUpper())
+    return false;
+  // reduction kernels are slower in no-loop mode
+  if (teamsOp.getNumReductionVars())
+    return false;
+  if (wsLoopOp->getNumReductionVars())
+    return false;
+  // check if the user allows the promotion of kernels to no-loop mode
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DominikAdamski wrote:

Done

https://github.com/llvm/llvm-project/pull/155818