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In the spirit of TRegions [0], this patch analyzes a kernel and tracks if it can be executed in SPMD-mode. If so, we flip the arguments of the __kmpc_target_init and deinit call to enable the mode. We also update the `<kernel>_exec_mode` flag to indicate to the runtime we changed the mode to SPMD. The code analysis is done interprocedurally by extending the AAKernelInfo abstract attribute to track SPMD compatibility as well. [0] https://link.springer.com/chapter/10.1007/978-3-030-28596-8_11 Differential Revision: https://reviews.llvm.org/D102307
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
//===- Assumptions.cpp ------ Collection of helpers for assumptions -------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Assumptions.h"
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#include "llvm/IR/Attributes.h"
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#include "llvm/IR/Function.h"
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using namespace llvm;
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bool llvm::hasAssumption(Function &F,
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const KnownAssumptionString &AssumptionStr) {
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const Attribute &A = F.getFnAttribute(AssumptionAttrKey);
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if (!A.isValid())
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return false;
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assert(A.isStringAttribute() && "Expected a string attribute!");
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SmallVector<StringRef, 8> Strings;
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A.getValueAsString().split(Strings, ",");
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return llvm::any_of(Strings, [=](StringRef Assumption) {
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return Assumption == AssumptionStr;
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});
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}
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StringSet<> llvm::KnownAssumptionStrings({
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"omp_no_openmp", // OpenMP 5.1
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"omp_no_openmp_routines", // OpenMP 5.1
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"omp_no_parallelism", // OpenMP 5.1
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"ompx_spmd_amenable", // OpenMPOpt extension
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});
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