================
@@ -18835,6 +18835,22 @@ case Builtin::BI__builtin_hlsl_elementwise_isinf: {
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveIsFirstLaneIntrinsic();
return EmitRuntimeCall(Intrinsic::getDeclaration(&CGM.getModule(), ID));
}
+ case Builtin::BI__builtin_hlsl_wave_read_lane_at: {
+ // Due to the use of variadic arguments we must explicitly retreive them
and
+ // create our function type.
+ Value *OpExpr = EmitScalarExpr(E->getArg(0));
+ Value *OpIndex = EmitScalarExpr(E->getArg(1));
+ llvm::FunctionType *FT = llvm::FunctionType::get(
+ OpExpr->getType(), ArrayRef{OpExpr->getType(), OpIndex->getType()},
+ false);
+
+ // Get overloaded name
+ std::string name =
+ Intrinsic::getName(CGM.getHLSLRuntime().getWaveReadLaneAtIntrinsic(),
+ ArrayRef{OpExpr->getType()}, &CGM.getModule());
+ return EmitRuntimeCall(CGM.CreateRuntimeFunction(FT, name, {}, false,
true),
+ ArrayRef{OpExpr, OpIndex},
"hlsl.wave.read.lane.at");
----------------
inbelic wrote:
I think `__hlsl_wave_get_lane_index` is the odd one out. The other intrinsics
follow the pattern of `hlsl.name`. Having changed to using one word
`waveReadLaneAt` I think we can keep it consistent naming with
`hlsl.waveReadLaneAt`.
I can change the name to `hlsl.waveGetLaneIndex` in the clean-up pr.
https://github.com/llvm/llvm-project/pull/111010
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