127 lines
4.7 KiB
C++
127 lines
4.7 KiB
C++
//===- llvm/unittest/CodeGen/GlobalISel/MachineLegalizerTest.cpp ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/GlobalISel/MachineLegalizer.h"
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#include "llvm/Target/TargetOpcodes.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using llvm::MachineLegalizer::LegalizeAction::Legal;
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using llvm::MachineLegalizer::LegalizeAction::Lower;
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using llvm::MachineLegalizer::LegalizeAction::NarrowScalar;
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using llvm::MachineLegalizer::LegalizeAction::WidenScalar;
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using llvm::MachineLegalizer::LegalizeAction::FewerElements;
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using llvm::MachineLegalizer::LegalizeAction::MoreElements;
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using llvm::MachineLegalizer::LegalizeAction::Libcall;
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using llvm::MachineLegalizer::LegalizeAction::Custom;
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using llvm::MachineLegalizer::LegalizeAction::Unsupported;
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using llvm::MachineLegalizer::LegalizeAction::NotFound;
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// Define a couple of pretty printers to help debugging when things go wrong.
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namespace llvm {
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std::ostream &
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operator<<(std::ostream &OS, const llvm::MachineLegalizer::LegalizeAction Act) {
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switch (Act) {
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case Lower: OS << "Lower"; break;
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case Legal: OS << "Legal"; break;
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case NarrowScalar: OS << "NarrowScalar"; break;
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case WidenScalar: OS << "WidenScalar"; break;
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case FewerElements: OS << "FewerElements"; break;
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case MoreElements: OS << "MoreElements"; break;
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case Libcall: OS << "Libcall"; break;
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case Custom: OS << "Custom"; break;
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case Unsupported: OS << "Unsupported"; break;
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case NotFound: OS << "NotFound";
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}
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return OS;
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}
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std::ostream &
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operator<<(std::ostream &OS, const llvm::LLT Ty) {
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std::string Repr;
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raw_string_ostream SS{Repr};
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Ty.print(SS);
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OS << SS.str();
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return OS;
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}
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}
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namespace {
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TEST(MachineLegalizerTest, ScalarRISC) {
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using namespace TargetOpcode;
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MachineLegalizer L;
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// Typical RISCy set of operations based on AArch64.
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L.setAction({G_ADD, LLT::scalar(8)}, WidenScalar);
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L.setAction({G_ADD, LLT::scalar(16)}, WidenScalar);
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L.setAction({G_ADD, LLT::scalar(32)}, Legal);
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L.setAction({G_ADD, LLT::scalar(64)}, Legal);
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L.computeTables();
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// Check we infer the correct types and actually do what we're told.
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ASSERT_EQ(L.getAction({G_ADD, LLT::scalar(8)}),
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std::make_pair(WidenScalar, LLT::scalar(32)));
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ASSERT_EQ(L.getAction({G_ADD, LLT::scalar(16)}),
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std::make_pair(WidenScalar, LLT::scalar(32)));
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ASSERT_EQ(L.getAction({G_ADD, LLT::scalar(32)}),
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std::make_pair(Legal, LLT::scalar(32)));
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ASSERT_EQ(L.getAction({G_ADD, LLT::scalar(64)}),
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std::make_pair(Legal, LLT::scalar(64)));
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// Make sure the default for over-sized types applies.
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ASSERT_EQ(L.getAction({G_ADD, LLT::scalar(128)}),
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std::make_pair(NarrowScalar, LLT::scalar(64)));
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}
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TEST(MachineLegalizerTest, VectorRISC) {
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using namespace TargetOpcode;
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MachineLegalizer L;
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// Typical RISCy set of operations based on ARM.
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L.setScalarInVectorAction(G_ADD, LLT::scalar(8), Legal);
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L.setScalarInVectorAction(G_ADD, LLT::scalar(16), Legal);
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L.setScalarInVectorAction(G_ADD, LLT::scalar(32), Legal);
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L.setAction({G_ADD, LLT::vector(8, 8)}, Legal);
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L.setAction({G_ADD, LLT::vector(16, 8)}, Legal);
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L.setAction({G_ADD, LLT::vector(4, 16)}, Legal);
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L.setAction({G_ADD, LLT::vector(8, 16)}, Legal);
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L.setAction({G_ADD, LLT::vector(2, 32)}, Legal);
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L.setAction({G_ADD, LLT::vector(4, 32)}, Legal);
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L.computeTables();
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// Check we infer the correct types and actually do what we're told for some
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// simple cases.
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ASSERT_EQ(L.getAction({G_ADD, LLT::vector(2, 8)}),
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std::make_pair(MoreElements, LLT::vector(8, 8)));
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ASSERT_EQ(L.getAction({G_ADD, LLT::vector(8, 8)}),
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std::make_pair(Legal, LLT::vector(8, 8)));
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ASSERT_EQ(L.getAction({G_ADD, LLT::vector(8, 32)}),
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std::make_pair(FewerElements, LLT::vector(4, 32)));
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}
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TEST(MachineLegalizerTest, MultipleTypes) {
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using namespace TargetOpcode;
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MachineLegalizer L;
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// Typical RISCy set of operations based on AArch64.
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L.setAction({G_PTRTOINT, 0, LLT::scalar(64)}, Legal);
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L.setAction({G_PTRTOINT, 1, LLT::pointer(0)}, Legal);
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L.setAction({G_PTRTOINT, 0, LLT::scalar(32)}, WidenScalar);
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L.computeTables();
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// Check we infer the correct types and actually do what we're told.
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ASSERT_EQ(L.getAction({G_PTRTOINT, 0, LLT::scalar(64)}),
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std::make_pair(Legal, LLT::scalar(64)));
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ASSERT_EQ(L.getAction({G_PTRTOINT, 1, LLT::pointer(0)}),
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std::make_pair(Legal, LLT::pointer(0)));
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}
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}
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