[JITLink][AArch32] Split invalid edge kind test out into readAddendDataErrors

This test actually exercises the readAddendData() function.

Author: weliveindetail

llvm/unittests/ExecutionEngine/JITLink/AArch32ErrorTests.cpp

@@ -26,13 +26,35 @@ auto &Sec =
 
 auto ArmCfg = getArmConfigForCPUArch(ARMBuildAttrs::v7);
 
+constexpr uint64_t DataAlignment = 4;
 constexpr uint64_t ArmAlignment = 4;
 constexpr uint64_t ThumbAlignment = 2;
 constexpr uint64_t AlignmentOffset = 0;
 
 constexpr orc::ExecutorAddrDiff SymbolOffset = 0;
 constexpr orc::ExecutorAddrDiff SymbolSize = 4;
 
+template <size_t sizeOfArray>
+ArrayRef<char> toArrayRefChar(const uint8_t (&Zeros)[sizeOfArray]) {
+  return ArrayRef<char>(reinterpret_cast<const char *>(&Zeros), sizeof(Zeros));
+}
+
+TEST(AArch32_ELF, readAddendDataErrors) {
+  constexpr uint64_t ZerosOffset = 0;
+  const uint8_t Zeros[] = {0x00, 0x00, 0x00, 0x00};
+  constexpr orc::ExecutorAddr ZerosBlockAddr(0x0000);
+  auto &ZerosBlock =
+      G->createContentBlock(Sec, toArrayRefChar(Zeros), ZerosBlockAddr,
+                            DataAlignment, AlignmentOffset);
+
+  // Invalid edge kind is the only error we can raise here right now.
+  Edge::Kind Invalid = Edge::GenericEdgeKind::Invalid;
+  EXPECT_THAT_EXPECTED(readAddend(*G, ZerosBlock, ZerosOffset, Invalid, ArmCfg),
+                       FailedWithMessage(testing::HasSubstr(
+                           "can not read implicit addend for aarch32 edge kind "
+                           "INVALID RELOCATION")));
+}
+
 TEST(AArch32_ELF, readAddendArmErrors) {
 
   constexpr orc::ExecutorAddr B1DummyAddr(0x1000);
@@ -44,12 +66,6 @@ TEST(AArch32_ELF, readAddendArmErrors) {
                             sizeof(ArmWord));
   auto &BArm = G->createContentBlock(Sec, ArmContent, B1DummyAddr, ArmAlignment,
                                      AlignmentOffset);
-  Edge::Kind Invalid = Edge::GenericEdgeKind::Invalid;
-
-  EXPECT_THAT_EXPECTED(readAddend(*G, BArm, SymbolOffset, Invalid, ArmCfg),
-                       FailedWithMessage(testing::HasSubstr(
-                           "can not read implicit addend for aarch32 edge kind "
-                           "INVALID RELOCATION")));
 
   for (Edge::Kind K = FirstArmRelocation; K < LastArmRelocation; K += 1) {
     EXPECT_THAT_EXPECTED(readAddend(*G, BArm, SymbolOffset, K, ArmCfg),