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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
//===- BasicBlockUtils.cpp - Unit tests for BasicBlockUtils ---------------===//
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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 "llvm/Transforms/Utils/BasicBlockUtils.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/IR/BasicBlock.h"
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#include "llvm/IR/Dominators.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/Support/SourceMgr.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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static std::unique_ptr<Module> parseIR(LLVMContext &C, const char *IR) {
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SMDiagnostic Err;
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std::unique_ptr<Module> Mod = parseAssemblyString(IR, Err, C);
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if (!Mod)
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Err.print("BasicBlockUtilsTests", errs());
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return Mod;
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}
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TEST(BasicBlockUtils, SplitBlockPredecessors) {
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LLVMContext C;
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std::unique_ptr<Module> M = parseIR(
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C,
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"define i32 @basic_func(i1 %cond) {\n"
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"entry:\n"
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" br i1 %cond, label %bb0, label %bb1\n"
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"bb0:\n"
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" br label %bb1\n"
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"bb1:\n"
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" %phi = phi i32 [ 0, %entry ], [ 1, %bb0 ]"
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" ret i32 %phi\n"
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"}\n"
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"\n"
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);
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auto *F = M->getFunction("basic_func");
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DominatorTree DT(*F);
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// Make sure the dominator tree is properly updated if calling this on the
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// entry block.
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SplitBlockPredecessors(&F->getEntryBlock(), {}, "split.entry", &DT);
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EXPECT_TRUE(DT.verify());
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}
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