[Decompiler - New IR] Add AtomicOp (#181)

* wip decompiler ir

* add AtomicOp stuff

* fix windows build and warnings

* add instruction parser

* include

* make minilzo shared

* odr fix

* a

* fix merge conflicts

* move decompiler into namespace

* update the code coverage to include the decompiler

* add demo test

* add register use test to example test

test/decompiler/test_InstructionParser.cpp

@@ -0,0 +1,42 @@
+#include "gtest/gtest.h"
+#include "decompiler/Disasm/InstructionParser.h"
+#include "decompiler/Disasm/DecompilerLabel.h"
+
+using namespace decompiler;
+
+TEST(DecompilerInstructionParser, SimpleTest) {
+  InstructionParser parser;
+  std::vector<std::string> ops = {"daddu a0, a1, a2", "addu r0, t7, s6",  "daddiu r0, at, #t",
+                                  "addiu t2, t3, 12", "slti v1, a3, -23", "sltiu s3, s4, 3",
+                                  "sb v1, 12(a1)",    "sh s7, sym(s6)",   "sd s2, -12(s2)",
+                                  "lw s3, 12(s7)",    "lwu t2, sym(s7)",  "add.s f0, f1, f2",
+                                  "beq r0, r0, L312"};
+
+  std::vector<DecompilerLabel> labels;
+  labels.push_back(DecompilerLabel{"L311", 1, 2});
+  labels.push_back(DecompilerLabel{"L312", 1, 2});
+  labels.push_back(DecompilerLabel{"L313", 1, 2});
+  for (auto& op : ops) {
+    auto instr = parser.parse_single_instruction(op, labels);
+    EXPECT_EQ(op, instr.to_string(labels));
+  }
+}
+
+TEST(DecompilerInstructionParser, ProgramNoLabels) {
+  InstructionParser parser;
+  std::string program = "  daddu a0, a1, a2\n  sh s7, sym(s6)\n  sb v1, 12(a1)\n";
+  auto result = parser.parse_program(program);
+  EXPECT_EQ(result.print(), program);
+}
+
+TEST(DecompilerInstructionParser, ProgramLabels) {
+  InstructionParser parser;
+  std::string program =
+      "L100:\n"
+      "  daddu v0, v1, v0\n"
+      "  beq at, r0, L102\n"
+      "L102:\n"
+      "  jr ra\n";
+  auto result = parser.parse_program(program);
+  EXPECT_EQ(result.print(), program);
+}