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//===- llvm/unittests/Transforms/Vectorize/VPlanVerifierTest.cpp ----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "../lib/Transforms/Vectorize/VPlanVerifier.h"
#include "../lib/Transforms/Vectorize/VPlan.h"
#include "../lib/Transforms/Vectorize/VPlanCFG.h"
#include "VPlanTestBase.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "gtest/gtest.h"
using namespace llvm;
using VPVerifierTest = VPlanTestBase;
namespace {
TEST_F(VPVerifierTest, VPInstructionUseBeforeDefSameBB) {
VPlan &Plan = getPlan();
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(C), 0));
VPInstruction *DefI = new VPInstruction(Instruction::Add, {Zero});
VPInstruction *UseI = new VPInstruction(Instruction::Sub, {DefI});
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBB1->appendRecipe(UseI);
VPBB1->appendRecipe(DefI);
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBB2->appendRecipe(CanIV);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB2, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
EXPECT_STREQ("Use before def!\n"
" EMIT vp<%1> = sub vp<%2>\n"
" before\n"
" EMIT vp<%2> = add ir<0>\n",
::testing::internal::GetCapturedStderr().c_str());
#else
EXPECT_STREQ("Use before def!\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
#endif
}
TEST_F(VPVerifierTest, VPInstructionUseBeforeDefDifferentBB) {
VPlan &Plan = getPlan();
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(C), 0));
VPInstruction *DefI = new VPInstruction(Instruction::Add, {Zero});
VPInstruction *UseI = new VPInstruction(Instruction::Sub, {DefI});
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPInstruction *BranchOnCond =
new VPInstruction(VPInstruction::BranchOnCond, {CanIV});
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBB1->appendRecipe(UseI);
VPBB2->appendRecipe(CanIV);
VPBB2->appendRecipe(DefI);
VPBB2->appendRecipe(BranchOnCond);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB2, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
EXPECT_STREQ("Use before def!\n"
" EMIT vp<%1> = sub vp<%3>\n"
" before\n"
" EMIT vp<%3> = add ir<0>\n",
::testing::internal::GetCapturedStderr().c_str());
#else
EXPECT_STREQ("Use before def!\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
#endif
}
TEST_F(VPVerifierTest, VPBlendUseBeforeDefDifferentBB) {
VPlan &Plan = getPlan();
IntegerType *Int32 = IntegerType::get(C, 32);
auto *Phi = PHINode::Create(Int32, 1);
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Int32, 0));
VPInstruction *DefI = new VPInstruction(Instruction::Add, {Zero});
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPInstruction *BranchOnCond =
new VPInstruction(VPInstruction::BranchOnCond, {CanIV});
auto *Blend = new VPBlendRecipe(Phi, {DefI});
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBasicBlock *VPBB3 = Plan.createVPBasicBlock("");
VPBasicBlock *VPBB4 = Plan.createVPBasicBlock("");
VPBB2->appendRecipe(CanIV);
VPBB3->appendRecipe(Blend);
VPBB4->appendRecipe(DefI);
VPBB4->appendRecipe(BranchOnCond);
VPBlockUtils::connectBlocks(VPBB2, VPBB3);
VPBlockUtils::connectBlocks(VPBB3, VPBB4);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB4, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBB3->setParent(R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
EXPECT_STREQ("Use before def!\n"
" BLEND ir<<badref>> = vp<%2>\n"
" before\n"
" EMIT vp<%2> = add ir<0>\n",
::testing::internal::GetCapturedStderr().c_str());
#else
EXPECT_STREQ("Use before def!\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
#endif
delete Phi;
}
TEST_F(VPVerifierTest, VPPhiIncomingValueDoesntDominateIncomingBlock) {
VPlan &Plan = getPlan();
IntegerType *Int32 = IntegerType::get(C, 32);
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Int32, 0));
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBasicBlock *VPBB3 = Plan.createVPBasicBlock("");
VPBasicBlock *VPBB4 = Plan.createVPBasicBlock("");
VPInstruction *DefI = new VPInstruction(Instruction::Add, {Zero});
VPPhi *Phi = new VPPhi({DefI}, {});
VPBB2->appendRecipe(Phi);
VPBB2->appendRecipe(DefI);
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPBB3->appendRecipe(CanIV);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB3, VPBB3, "R1");
VPBlockUtils::connectBlocks(VPBB1, VPBB2);
VPBlockUtils::connectBlocks(VPBB2, R1);
VPBlockUtils::connectBlocks(VPBB4, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
EXPECT_STREQ("Incoming def at index 0 does not dominate incoming block!\n"
" EMIT vp<%2> = add ir<0>\n"
" does not dominate preheader for\n"
" EMIT-SCALAR vp<%1> = phi [ vp<%2>, preheader ]",
::testing::internal::GetCapturedStderr().c_str());
#else
EXPECT_STREQ("Incoming def at index 0 does not dominate incoming block!\n", ::
testing::internal::GetCapturedStderr()
.c_str());
#endif
#endif
}
TEST_F(VPVerifierTest, DuplicateSuccessorsOutsideRegion) {
VPlan &Plan = getPlan();
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(C), 0));
VPInstruction *I1 = new VPInstruction(Instruction::Add, {Zero});
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPInstruction *BranchOnCond =
new VPInstruction(VPInstruction::BranchOnCond, {CanIV});
VPInstruction *BranchOnCond2 =
new VPInstruction(VPInstruction::BranchOnCond, {I1});
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBB1->appendRecipe(I1);
VPBB1->appendRecipe(BranchOnCond2);
VPBB2->appendRecipe(CanIV);
VPBB2->appendRecipe(BranchOnCond);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB2, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
EXPECT_STREQ("Multiple instances of the same successor.\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
}
TEST_F(VPVerifierTest, DuplicateSuccessorsInsideRegion) {
VPlan &Plan = getPlan();
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(C), 0));
VPInstruction *I1 = new VPInstruction(Instruction::Add, {Zero});
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPInstruction *BranchOnCond =
new VPInstruction(VPInstruction::BranchOnCond, {CanIV});
VPInstruction *BranchOnCond2 =
new VPInstruction(VPInstruction::BranchOnCond, {I1});
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPBasicBlock *VPBB3 = Plan.createVPBasicBlock("");
VPBB1->appendRecipe(I1);
VPBB2->appendRecipe(CanIV);
VPBB2->appendRecipe(BranchOnCond2);
VPBB3->appendRecipe(BranchOnCond);
VPBlockUtils::connectBlocks(VPBB2, VPBB3);
VPBlockUtils::connectBlocks(VPBB2, VPBB3);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB3, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBB3->setParent(R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
EXPECT_STREQ("Multiple instances of the same successor.\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
}
TEST_F(VPVerifierTest, BlockOutsideRegionWithParent) {
VPlan &Plan = getPlan();
VPBasicBlock *VPBB1 = Plan.getEntry();
VPBasicBlock *VPBB2 = Plan.createVPBasicBlock("");
VPValue *Zero = Plan.getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(C), 0));
auto *CanIV = new VPCanonicalIVPHIRecipe(Zero, {});
VPBB2->appendRecipe(CanIV);
VPInstruction *DefI = new VPInstruction(Instruction::Add, {Zero});
VPInstruction *BranchOnCond =
new VPInstruction(VPInstruction::BranchOnCond, {DefI});
VPBB1->appendRecipe(DefI);
VPBB2->appendRecipe(BranchOnCond);
VPRegionBlock *R1 = Plan.createVPRegionBlock(VPBB2, VPBB2, "R1");
VPBlockUtils::connectBlocks(VPBB1, R1);
VPBlockUtils::connectBlocks(R1, Plan.getScalarHeader());
VPBB1->setParent(R1);
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(Plan));
#if GTEST_HAS_STREAM_REDIRECTION
EXPECT_STREQ("Predecessor is not in the same region.\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
}
class VPIRVerifierTest : public VPlanTestIRBase {};
TEST_F(VPIRVerifierTest, testVerifyIRPhi) {
const char *ModuleString =
"define void @f(ptr %A, i64 %N) {\n"
"entry:\n"
" br label %loop\n"
"loop:\n"
" %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]\n"
" %arr.idx = getelementptr inbounds i32, ptr %A, i64 %iv\n"
" %l1 = load i32, ptr %arr.idx, align 4\n"
" %res = add i32 %l1, 10\n"
" store i32 %res, ptr %arr.idx, align 4\n"
" %iv.next = add i64 %iv, 1\n"
" %exitcond = icmp ne i64 %iv.next, %N\n"
" br i1 %exitcond, label %loop, label %for.end\n"
"for.end:\n"
" %p = phi i32 [ %l1, %loop ]\n"
" ret void\n"
"}\n";
Module &M = parseModule(ModuleString);
Function *F = M.getFunction("f");
BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
auto Plan = buildVPlan(LoopHeader);
Plan->getExitBlocks()[0]->front().addOperand(
Plan->getOrAddLiveIn(ConstantInt::get(Type::getInt32Ty(*Ctx), 0)));
#if GTEST_HAS_STREAM_REDIRECTION
::testing::internal::CaptureStderr();
#endif
EXPECT_FALSE(verifyVPlanIsValid(*Plan));
#if GTEST_HAS_STREAM_REDIRECTION
EXPECT_STREQ(
"Phi-like recipe with different number of operands and predecessors.\n",
::testing::internal::GetCapturedStderr().c_str());
#endif
}
} // namespace
|
