[ORC] skip reoptimization tests on PPC.

Fix https://lab.llvm.org/buildbot/#/builders/64/builds/1202.

Author: sunho

llvm/unittests/ExecutionEngine/Orc/JITLinkRedirectionManagerTest.cpp

@@ -43,6 +43,9 @@ class JITLinkRedirectionManagerTest : public testing::Test {
     if (Triple.isOSBinFormatCOFF() && Triple.isAArch64())
       GTEST_SKIP();
 
+    if (Triple.isPPC())
+      GTEST_SKIP();
+
     ES = std::make_unique<ExecutionSession>(
         std::make_unique<UnsupportedExecutorProcessControl>(
             nullptr, nullptr, JTMB->getTargetTriple().getTriple()));

llvm/unittests/ExecutionEngine/Orc/ReOptimizeLayerTest.cpp

@@ -43,6 +43,9 @@ class ReOptimizeLayerTest : public testing::Test {
     if (Triple.isOSBinFormatCOFF() && Triple.isAArch64())
       GTEST_SKIP();
 
+    if (Triple.isPPC())
+      GTEST_SKIP();
+
     auto EPC = SelfExecutorProcessControl::Create();
     if (!EPC) {
       consumeError(EPC.takeError());