================
@@ -108,6 +138,25 @@ void GPUToSPIRVPass::runOnOperation() {
if (failed(applyFullConversion(gpuModule, *target, std::move(patterns))))
return signalPassFailure();
}
+
+ // For OpenCL, the gpu.func op in the original gpu.module op needs to be
----------------
silee2 wrote:
Keeping the original gpu.func causes legality check error later in the gpu
compile pipeline.
If target attr is set for a gpu.module, gpu-to-llvm pass doesn't lower
gpu.launch_func
Instead, it is replaced with another gpu.launch_func that has lowered argument
types (llvm ptrs).
If a gpu.func remains as an input to gpu-to-llvm pass, there is an argument
mismatch between the new gpu.launch_func and the gpu.func. And a error is fired.
The reason for putting a dummy func.func here is to work around that check.
For func types other than gpu.func, argument types are not checked against
gpu.launch_func.
But a func.func is still need as there will be a symbol check.
https://github.com/llvm/llvm-project/pull/69941
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