1 files changed, 4 insertions, 10 deletions
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index 28263ede39d..38eed76fe45 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -648,16 +648,10 @@ unsigned Value::getPointerAlignment(const DataLayout &DL) const {
 
   unsigned Align = 0;
   if (auto *GO = dyn_cast<GlobalObject>(this)) {
-    if (isa<Function>(GO)) {
-      switch (DL.getFunctionPtrAlignType()) {
-      case DataLayout::FunctionPtrAlignType::Independent:
-        return DL.getFunctionPtrAlign();
-      case DataLayout::FunctionPtrAlignType::MultipleOfFunctionAlign:
-        return std::max(DL.getFunctionPtrAlign(), GO->getAlignment());
-      default:
-        llvm_unreachable("unknown function pointer align type");
-      }
-    }
+    // Don't make any assumptions about function pointer alignment. Some
+    // targets use the LSBs to store additional information.
+    if (isa<Function>(GO))
+      return 0;
     Align = GO->getAlignment();
     if (Align == 0) {
       if (auto *GVar = dyn_cast<GlobalVariable>(GO)) {