196 lines
7.9 KiB
C++
196 lines
7.9 KiB
C++
//===- llvm/unittests/Transforms/Vectorize/VPlanDominatorTreeTest.cpp -----===//
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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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#include "../lib/Transforms/Vectorize/VPlanHCFGBuilder.h"
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#include "VPlanTestBase.h"
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#include "gtest/gtest.h"
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namespace llvm {
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namespace {
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class VPlanDominatorTreeTest : public VPlanTestBase {};
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TEST_F(VPlanDominatorTreeTest, BasicVPBBDomination) {
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const char *ModuleString =
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"define void @f(i32* %a, i32* %b, i32* %c, i32 %N, i32 %M, i32 %K) {\n"
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"entry:\n"
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" br label %for.body\n"
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"for.body:\n"
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" %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.inc ]\n"
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" br i1 true, label %if.then, label %if.else\n"
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"if.then:\n"
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" br label %for.inc\n"
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"if.else:\n"
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" br label %for.inc\n"
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"for.inc:\n"
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" %iv.next = add nuw nsw i64 %iv, 1\n"
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" %exitcond = icmp eq i64 %iv.next, 300\n"
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" br i1 %exitcond, label %for.end, label %for.body\n"
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"for.end:\n"
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" ret void\n"
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"}\n";
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Module &M = parseModule(ModuleString);
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Function *F = M.getFunction("f");
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BasicBlock *LoopHeader = F->getEntryBlock().getSingleSuccessor();
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auto Plan = buildPlainCFG(LoopHeader);
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// Build VPlan domination tree analysis.
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VPRegionBlock *TopRegion = cast<VPRegionBlock>(Plan->getEntry());
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VPDominatorTree VPDT;
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VPDT.recalculate(*TopRegion);
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VPBlockBase *PH = TopRegion->getEntry();
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VPBlockBase *H = PH->getSingleSuccessor();
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VPBlockBase *IfThen = H->getSuccessors()[0];
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VPBlockBase *IfElse = H->getSuccessors()[1];
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VPBlockBase *Latch = IfThen->getSingleSuccessor();
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VPBlockBase *Exit = Latch->getSuccessors()[0] != H
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? Latch->getSuccessors()[0]
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: Latch->getSuccessors()[1];
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// Reachability.
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EXPECT_TRUE(VPDT.isReachableFromEntry(PH));
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EXPECT_TRUE(VPDT.isReachableFromEntry(H));
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EXPECT_TRUE(VPDT.isReachableFromEntry(IfThen));
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EXPECT_TRUE(VPDT.isReachableFromEntry(IfElse));
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EXPECT_TRUE(VPDT.isReachableFromEntry(Latch));
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EXPECT_TRUE(VPDT.isReachableFromEntry(Exit));
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// VPBB dominance.
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EXPECT_TRUE(VPDT.dominates(PH, PH));
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EXPECT_TRUE(VPDT.dominates(PH, H));
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EXPECT_TRUE(VPDT.dominates(PH, IfThen));
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EXPECT_TRUE(VPDT.dominates(PH, IfElse));
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EXPECT_TRUE(VPDT.dominates(PH, Latch));
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EXPECT_TRUE(VPDT.dominates(PH, Exit));
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EXPECT_FALSE(VPDT.dominates(H, PH));
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EXPECT_TRUE(VPDT.dominates(H, H));
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EXPECT_TRUE(VPDT.dominates(H, IfThen));
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EXPECT_TRUE(VPDT.dominates(H, IfElse));
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EXPECT_TRUE(VPDT.dominates(H, Latch));
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EXPECT_TRUE(VPDT.dominates(H, Exit));
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EXPECT_FALSE(VPDT.dominates(IfThen, PH));
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EXPECT_FALSE(VPDT.dominates(IfThen, H));
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EXPECT_TRUE(VPDT.dominates(IfThen, IfThen));
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EXPECT_FALSE(VPDT.dominates(IfThen, IfElse));
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EXPECT_FALSE(VPDT.dominates(IfThen, Latch));
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EXPECT_FALSE(VPDT.dominates(IfThen, Exit));
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EXPECT_FALSE(VPDT.dominates(IfElse, PH));
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EXPECT_FALSE(VPDT.dominates(IfElse, H));
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EXPECT_FALSE(VPDT.dominates(IfElse, IfThen));
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EXPECT_TRUE(VPDT.dominates(IfElse, IfElse));
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EXPECT_FALSE(VPDT.dominates(IfElse, Latch));
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EXPECT_FALSE(VPDT.dominates(IfElse, Exit));
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EXPECT_FALSE(VPDT.dominates(Latch, PH));
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EXPECT_FALSE(VPDT.dominates(Latch, H));
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EXPECT_FALSE(VPDT.dominates(Latch, IfThen));
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EXPECT_FALSE(VPDT.dominates(Latch, IfElse));
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EXPECT_TRUE(VPDT.dominates(Latch, Latch));
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EXPECT_TRUE(VPDT.dominates(Latch, Exit));
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EXPECT_FALSE(VPDT.dominates(Exit, PH));
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EXPECT_FALSE(VPDT.dominates(Exit, H));
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EXPECT_FALSE(VPDT.dominates(Exit, IfThen));
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EXPECT_FALSE(VPDT.dominates(Exit, IfElse));
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EXPECT_FALSE(VPDT.dominates(Exit, Latch));
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EXPECT_TRUE(VPDT.dominates(Exit, Exit));
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// VPBB proper dominance.
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EXPECT_FALSE(VPDT.properlyDominates(PH, PH));
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EXPECT_TRUE(VPDT.properlyDominates(PH, H));
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EXPECT_TRUE(VPDT.properlyDominates(PH, IfThen));
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EXPECT_TRUE(VPDT.properlyDominates(PH, IfElse));
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EXPECT_TRUE(VPDT.properlyDominates(PH, Latch));
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EXPECT_TRUE(VPDT.properlyDominates(PH, Exit));
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EXPECT_FALSE(VPDT.properlyDominates(H, PH));
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EXPECT_FALSE(VPDT.properlyDominates(H, H));
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EXPECT_TRUE(VPDT.properlyDominates(H, IfThen));
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EXPECT_TRUE(VPDT.properlyDominates(H, IfElse));
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EXPECT_TRUE(VPDT.properlyDominates(H, Latch));
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EXPECT_TRUE(VPDT.properlyDominates(H, Exit));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, PH));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, H));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, IfThen));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, IfElse));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, Latch));
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EXPECT_FALSE(VPDT.properlyDominates(IfThen, Exit));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, PH));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, H));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, IfThen));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, IfElse));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, Latch));
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EXPECT_FALSE(VPDT.properlyDominates(IfElse, Exit));
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EXPECT_FALSE(VPDT.properlyDominates(Latch, PH));
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EXPECT_FALSE(VPDT.properlyDominates(Latch, H));
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EXPECT_FALSE(VPDT.properlyDominates(Latch, IfThen));
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EXPECT_FALSE(VPDT.properlyDominates(Latch, IfElse));
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EXPECT_FALSE(VPDT.properlyDominates(Latch, Latch));
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EXPECT_TRUE(VPDT.properlyDominates(Latch, Exit));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, PH));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, H));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, IfThen));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, IfElse));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, Latch));
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EXPECT_FALSE(VPDT.properlyDominates(Exit, Exit));
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// VPBB nearest common dominator.
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, PH));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, H));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, IfThen));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, IfElse));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, Latch));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(PH, Exit));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(H, PH));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(H, H));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(H, IfThen));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(H, IfElse));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(H, Latch));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(H, Exit));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(IfThen, PH));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfThen, H));
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EXPECT_EQ(IfThen, VPDT.findNearestCommonDominator(IfThen, IfThen));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfThen, IfElse));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfThen, Latch));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfThen, Exit));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(IfElse, PH));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfElse, H));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfElse, IfThen));
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EXPECT_EQ(IfElse, VPDT.findNearestCommonDominator(IfElse, IfElse));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfElse, Latch));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(IfElse, Exit));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(Latch, PH));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Latch, H));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Latch, IfThen));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Latch, IfElse));
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EXPECT_EQ(Latch, VPDT.findNearestCommonDominator(Latch, Latch));
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EXPECT_EQ(Latch, VPDT.findNearestCommonDominator(Latch, Exit));
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EXPECT_EQ(PH, VPDT.findNearestCommonDominator(Exit, PH));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Exit, H));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Exit, IfThen));
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EXPECT_EQ(H, VPDT.findNearestCommonDominator(Exit, IfElse));
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EXPECT_EQ(Latch, VPDT.findNearestCommonDominator(Exit, Latch));
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EXPECT_EQ(Exit, VPDT.findNearestCommonDominator(Exit, Exit));
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}
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} // namespace
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} // namespace llvm
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