Added Delta IR Reduction Tool
Summary: Tool parses input IR file, and runs the delta debugging algorithm to reduce the functions inside the input file.
Reviewers: alexshap, chandlerc
Subscribers: mgorny, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D63672
> llvm-svn: 368071
llvm-svn: 368358
diff --git a/llvm/tools/llvm-reduce/TestRunner.cpp b/llvm/tools/llvm-reduce/TestRunner.cpp
new file mode 100644
index 0000000..09548a6
--- /dev/null
+++ b/llvm/tools/llvm-reduce/TestRunner.cpp
@@ -0,0 +1,57 @@
+//===-- TestRunner.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 "TestRunner.h"
+
+using namespace llvm;
+
+/// Gets Current Working Directory and tries to create a Tmp Directory
+static SmallString<128> initializeTmpDirectory() {
+ SmallString<128> CWD;
+ if (std::error_code EC = sys::fs::current_path(CWD)) {
+ errs() << "Error getting current directory: " << EC.message() << "!\n";
+ exit(1);
+ }
+
+ SmallString<128> TmpDirectory;
+ sys::path::append(TmpDirectory, CWD, "tmp");
+ if (std::error_code EC = sys::fs::create_directory(TmpDirectory))
+ errs() << "Error creating tmp directory: " << EC.message() << "!\n";
+
+ return TmpDirectory;
+}
+
+TestRunner::TestRunner(StringRef TestName, std::vector<std::string> TestArgs,
+ StringRef ReducedFilepath)
+ : TestName(TestName), TestArgs(std::move(TestArgs)),
+ ReducedFilepath(ReducedFilepath) {
+ TmpDirectory = initializeTmpDirectory();
+}
+
+/// Runs the interestingness test, passes file to be tested as first argument
+/// and other specified test arguments after that.
+int TestRunner::run(StringRef Filename) {
+ std::vector<StringRef> ProgramArgs;
+ ProgramArgs.push_back(TestName);
+ ProgramArgs.push_back(Filename);
+
+ for (auto Arg : TestArgs)
+ ProgramArgs.push_back(Arg.c_str());
+
+ Optional<StringRef> Redirects[3]; // STDIN, STDOUT, STDERR
+ int Result = sys::ExecuteAndWait(TestName, ProgramArgs, None, Redirects);
+
+ if (Result < 0) {
+ Error E = make_error<StringError>("Error running interesting-ness test\n",
+ inconvertibleErrorCode());
+ outs() << toString(std::move(E));
+ exit(1);
+ }
+
+ return !Result;
+}