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Cisco-Talos · Apr 24, 2024 · 1355191 · 1355191
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commit 1355191
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Showing 4 changed files with 31 additions and 22 deletions.
diff --git a/clambcc/clambc-compiler.py b/clambcc/clambc-compiler.py
@@ -548,6 +548,8 @@ def createInputSourceFile(clangLLVM: ClangLLVM, name: str, args: list, options:
  , 'globalopt'
  , 'clambc-preserve-abis' #remove fake function calls because O3 has already run
  , 'verify'
+ , 'clambc-remove-pointer-phis'
+ , 'verify'
  , 'clambc-remove-unsupported-icmp-intrinsics'
  , 'verify'
  , 'clambc-remove-usub'
@@ -574,6 +576,8 @@ def createInputSourceFile(clangLLVM: ClangLLVM, name: str, args: list, options:
  , 'verify'
  , 'clambc-rebuild'
  , 'verify'
+# , 'clambc-remove-pointer-phis'
+ , 'verify'
  , 'clambc-trace'
  , 'verify'
  , 'clambc-outline-endianness-calls'
@@ -603,7 +607,7 @@ def createInputSourceFile(clangLLVM: ClangLLVM, name: str, args: list, options:
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemoveUnsupportedICMPIntrinsics.so"
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemoveUSUB.so"
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemoveFSHL.so"
-# , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemovePointerPHIs.so" #Not needed, since clambc-remove-pointer-phis is not being used.
+ , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemovePointerPHIs.so" #Not needed, since clambc-remove-pointer-phis is not being used.
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCLoweringNF.so"
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCRemoveICMPSLE.so"
  , f"--load-pass-plugin {SHARED_OBJ_DIR}/libClamBCVerifier.so"

diff --git a/libclambcc/CMakeLists.txt b/libclambcc/CMakeLists.txt
@@ -277,21 +277,21 @@ target_link_directories(ClamBCRemoveICMPSLE PRIVATE ${LLVM_LIBRARY_DIRS})
 target_link_libraries(ClamBCRemoveICMPSLE PUBLIC ${LLVM_LIBS})
 install(TARGETS ClamBCRemoveICMPSLE DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
-# #
-# # The ClamBCRemovePointerPHIs shared library.
-# #
-# add_library(ClamBCRemovePointerPHIs SHARED
-# ClamBCRemovePointerPHIs.cpp)
-# target_include_directories(ClamBCRemovePointerPHIs PRIVATE
-# ${LLVM_INCLUDE_DIRS})
-# set_target_properties(ClamBCRemovePointerPHIs PROPERTIES
-# COMPILE_FLAGS "${WARNCXXFLAGS}"
-# VERSION ${LIBCLAMBC_VERSION}
-# SOVERSION ${LIBCLAMBC_SOVERSION})
-# #target_compile_definitions(ClamBCRemovePointerPHIs -DLOG_BEFORE_AFTER=1) # For testing
-# target_link_directories(ClamBCRemovePointerPHIs PRIVATE ${LLVM_LIBRARY_DIRS})
-# target_link_libraries(ClamBCRemovePointerPHIs PUBLIC ${LLVM_LIBS})
-# install(TARGETS ClamBCRemovePointerPHIs DESTINATION ${CMAKE_INSTALL_LIBDIR})
+#
+# The ClamBCRemovePointerPHIs shared library.
+#
+add_library(ClamBCRemovePointerPHIs SHARED
+ClamBCRemovePointerPHIs.cpp)
+target_include_directories(ClamBCRemovePointerPHIs PRIVATE
+${LLVM_INCLUDE_DIRS})
+set_target_properties(ClamBCRemovePointerPHIs PROPERTIES
+COMPILE_FLAGS "${WARNCXXFLAGS}"
+VERSION ${LIBCLAMBC_VERSION}
+SOVERSION ${LIBCLAMBC_SOVERSION})
+#target_compile_definitions(ClamBCRemovePointerPHIs -DLOG_BEFORE_AFTER=1) # For testing
+target_link_directories(ClamBCRemovePointerPHIs PRIVATE ${LLVM_LIBRARY_DIRS})
+target_link_libraries(ClamBCRemovePointerPHIs PUBLIC ${LLVM_LIBS})
+install(TARGETS ClamBCRemovePointerPHIs DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
 # #
 # # The ClamBCRemoveUndefs shared library.

diff --git a/libclambcc/ClamBCRemovePointerPHIs.cpp b/libclambcc/ClamBCRemovePointerPHIs.cpp
@@ -247,6 +247,11 @@ class ClamBCRemovePointerPHIs : public PassInfoMixin<ClamBCRemovePointerPHIs>
  assert(2 == pgepi->getNumOperands() && "Handle the case of more than 2 operands");
 
  Value *incVal = pgepi->getOperand(1);
+
+ if (incVal->getType() != pType){
+ DEBUG_NONPOINTER("SHOULD PROBABLY CHANGE THIS TO CREATE THE INDEX TO BE THE SAME TYPE AS THE incVal");
+ incVal = CastInst::CreateIntegerCast(incVal, pType, false, "ClamBCRemovePointerPHIs_cast_", pgepi);
+ }
 
  Instruction *add = BinaryOperator::Create(Instruction::Add, idxNode, incVal, "ClamBCRemovePointerPHIs_add_", pgepi);
  BasicBlock *pred = findPredecessor(idxNode->getParent(), pgepi->getParent(), omitNodes);
@@ -291,17 +296,14 @@ class ClamBCRemovePointerPHIs : public PassInfoMixin<ClamBCRemovePointerPHIs>
  public:
  ClamBCRemovePointerPHIs() {}
 
+ /*This is only necessary for 0.103 on windows.*/
  virtual PreservedAnalyses run(Module &m, ModuleAnalysisManager &mam)
  {
-
- /*Currently unused. Will remove after the RC phase.*/
- DEBUGERR << "TODO: EVALUATE WHETHER OR NOT I NEED THIS"
- << "<END>\n";
- return PreservedAnalyses::all();
-
  pMod = &m;
  bool ret = false;
 
+ llvm::errs() << "<" << __FUNCTION__ << "::" << __LINE__ << ">" << "HAVING ISSUES WITH POINTER PHIS ON 0.103 windows, keep changes isolated to this pass so that we can remove it when we no longer have to support 0.103" << "<END>\n";
+
  for (auto i = pMod->begin(), e = pMod->end(); i != e; i++) {
  llvm::Function *pFunc = llvm::dyn_cast<Function>(i);
  if (nullptr == pFunc) {

diff --git a/libclambcc/ClamBCWriter.cpp b/libclambcc/ClamBCWriter.cpp
@@ -811,6 +811,9 @@ class ClamBCWriter : public PassInfoMixin<ClamBCWriter>, public InstVisitor<Clam
  pType = pType->getPointerElementType();
 
  if (not pType->isIntegerTy()) {
+ DEBUG_VALUE(pGep);
+ llvm::errs() << "<" << __FUNCTION__ << "::" << __LINE__ << ">" << "EXITING<END>\n";
+ exit(11);
  assert(0 && "ONLY INTEGER TYPES ARE CURRENTLY IMPLEMENTED");
  }