================ @@ -0,0 +1,49 @@ +//===- AMDGPUExpandPseudoIntrinsics.cpp - Pseudo Intrinsic Expander Pass --===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// This file implements a pass that deals with expanding AMDGCN generic pseudo- +// intrinsics into target specific quantities / sequences. In this context, a +// pseudo-intrinsic is an AMDGCN intrinsic that does not directly map to a +// specific instruction, but rather is intended as a mechanism for abstractly +// conveying target specific info to a HLL / the FE, without concretely +// impacting the AST. An example of such an intrinsic is amdgcn.wavefrontsize. +// This pass should run as early as possible / immediately after Clang CodeGen, +// so that the optimisation pipeline and the BE operate with concrete target +// data. +//===----------------------------------------------------------------------===// + +#include "AMDGPU.h" +#include "AMDGPUTargetMachine.h" +#include "GCNSubtarget.h" + +#include "llvm/IR/Constants.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/Module.h" +#include "llvm/Pass.h" + +using namespace llvm; + +static inline PreservedAnalyses expandWaveSizeIntrinsic(const GCNSubtarget &ST, + Function *WaveSize) { + if (WaveSize->hasZeroLiveUses()) + return PreservedAnalyses::all(); + + for (auto &&U : WaveSize->users()) + U->replaceAllUsesWith(ConstantInt::get(WaveSize->getReturnType(), + ST.getWavefrontSize())); + + return PreservedAnalyses::none(); +} + +PreservedAnalyses + AMDGPUExpandPseudoIntrinsicsPass::run(Module &M, ModuleAnalysisManager &) { + + if (auto WS = M.getFunction("llvm.amdgcn.wavefrontsize")) ---------------- AlexVlx wrote:
Done. https://github.com/llvm/llvm-project/pull/114481 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
