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//===- llvm/unittest/Transforms/Vectorize/VPlanHCFGTest.cpp ---------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../lib/Transforms/Vectorize/VPlan.h"
#include "../lib/Transforms/Vectorize/VPlanHCFGTransforms.h"
#include "VPlanTestBase.h"
#include "gtest/gtest.h"
namespace llvm {
namespace {
class VPlanHCFGTest : public VPlanTestBase {};
TEST_F(VPlanHCFGTest, testBuildHCFGInnerLoop) {
const char *ModuleString =
"define void @f(i32* %A, i64 %N) {\n"
"entry:\n"
" br label %for.body\n"
"for.body:\n"
" %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]\n"
" %arr.idx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv\n"
" %l1 = load i32, i32* %arr.idx, align 4\n"
" %res = add i32 %l1, 10\n"
" store i32 %res, i32* %arr.idx, align 4\n"
" %indvars.iv.next = add i64 %indvars.iv, 1\n"
" %exitcond = icmp ne i64 %indvars.iv.next, %N\n"
" br i1 %exitcond, label %for.body, label %for.end\n"
"for.end:\n"
" ret void\n"
"}\n";
Module &M = parseModule(ModuleString);
Function *F = M.getFunction("f");
BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
auto Plan = buildHCFG(LoopHeader);
VPBasicBlock *Entry = Plan->getEntry()->getEntryBasicBlock();
EXPECT_NE(nullptr, Entry->getSingleSuccessor());
EXPECT_EQ(0u, Entry->getNumPredecessors());
EXPECT_EQ(1u, Entry->getNumSuccessors());
EXPECT_EQ(nullptr, Entry->getCondBit());
VPBasicBlock *VecBB = Entry->getSingleSuccessor()->getEntryBasicBlock();
EXPECT_EQ(7u, VecBB->size());
EXPECT_EQ(2u, VecBB->getNumPredecessors());
EXPECT_EQ(2u, VecBB->getNumSuccessors());
auto Iter = VecBB->begin();
VPInstruction *Phi = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::PHI, Phi->getOpcode());
VPInstruction *Idx = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::GetElementPtr, Idx->getOpcode());
EXPECT_EQ(2u, Idx->getNumOperands());
EXPECT_EQ(Phi, Idx->getOperand(1));
VPInstruction *Load = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::Load, Load->getOpcode());
EXPECT_EQ(1u, Load->getNumOperands());
EXPECT_EQ(Idx, Load->getOperand(0));
VPInstruction *Add = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::Add, Add->getOpcode());
EXPECT_EQ(2u, Add->getNumOperands());
EXPECT_EQ(Load, Add->getOperand(0));
VPInstruction *Store = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::Store, Store->getOpcode());
EXPECT_EQ(2u, Store->getNumOperands());
EXPECT_EQ(Add, Store->getOperand(0));
EXPECT_EQ(Idx, Store->getOperand(1));
VPInstruction *IndvarAdd = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::Add, IndvarAdd->getOpcode());
EXPECT_EQ(2u, IndvarAdd->getNumOperands());
EXPECT_EQ(Phi, IndvarAdd->getOperand(0));
VPInstruction *ICmp = dyn_cast<VPInstruction>(&*Iter++);
EXPECT_EQ(Instruction::ICmp, ICmp->getOpcode());
EXPECT_EQ(2u, ICmp->getNumOperands());
EXPECT_EQ(IndvarAdd, ICmp->getOperand(0));
EXPECT_EQ(VecBB->getCondBit(), ICmp);
LoopVectorizationLegality::InductionList Inductions;
SmallPtrSet<Instruction *, 1> DeadInstructions;
VPlanHCFGTransforms::VPInstructionsToVPRecipes(Plan, &Inductions,
DeadInstructions);
}
TEST_F(VPlanHCFGTest, testVPInstructionToVPRecipesInner) {
const char *ModuleString =
"define void @f(i32* %A, i64 %N) {\n"
"entry:\n"
" br label %for.body\n"
"for.body:\n"
" %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]\n"
" %arr.idx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv\n"
" %l1 = load i32, i32* %arr.idx, align 4\n"
" %res = add i32 %l1, 10\n"
" store i32 %res, i32* %arr.idx, align 4\n"
" %indvars.iv.next = add i64 %indvars.iv, 1\n"
" %exitcond = icmp ne i64 %indvars.iv.next, %N\n"
" br i1 %exitcond, label %for.body, label %for.end\n"
"for.end:\n"
" ret void\n"
"}\n";
Module &M = parseModule(ModuleString);
Function *F = M.getFunction("f");
BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
auto Plan = buildHCFG(LoopHeader);
LoopVectorizationLegality::InductionList Inductions;
SmallPtrSet<Instruction *, 1> DeadInstructions;
VPlanHCFGTransforms::VPInstructionsToVPRecipes(Plan, &Inductions,
DeadInstructions);
VPBlockBase *Entry = Plan->getEntry()->getEntryBasicBlock();
EXPECT_NE(nullptr, Entry->getSingleSuccessor());
EXPECT_EQ(0u, Entry->getNumPredecessors());
EXPECT_EQ(1u, Entry->getNumSuccessors());
VPBasicBlock *VecBB = Entry->getSingleSuccessor()->getEntryBasicBlock();
EXPECT_EQ(6u, VecBB->size());
EXPECT_EQ(2u, VecBB->getNumPredecessors());
EXPECT_EQ(2u, VecBB->getNumSuccessors());
auto Iter = VecBB->begin();
auto *Phi = dyn_cast<VPWidenPHIRecipe>(&*Iter++);
EXPECT_NE(nullptr, Phi);
auto *Idx = dyn_cast<VPWidenRecipe>(&*Iter++);
EXPECT_NE(nullptr, Idx);
auto *Load = dyn_cast<VPWidenMemoryInstructionRecipe>(&*Iter++);
EXPECT_NE(nullptr, Load);
auto *Add = dyn_cast<VPWidenRecipe>(&*Iter++);
EXPECT_NE(nullptr, Add);
auto *Store = dyn_cast<VPWidenMemoryInstructionRecipe>(&*Iter++);
EXPECT_NE(nullptr, Store);
auto *LastWiden = dyn_cast<VPWidenRecipe>(&*Iter++);
EXPECT_NE(nullptr, LastWiden);
EXPECT_EQ(VecBB->end(), Iter);
}
} // namespace
} // namespace llvm
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