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-rw-r--r--contrib/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp8
1 files changed, 6 insertions, 2 deletions
diff --git a/contrib/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp b/contrib/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
index 926427450682..c9ff94dc9744 100644
--- a/contrib/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
+++ b/contrib/llvm-project/llvm/lib/Transforms/Utils/RelLookupTableConverter.cpp
@@ -57,11 +57,15 @@ static bool shouldConvertToRelLookupTable(Module &M, GlobalVariable &GV) {
return false;
ConstantArray *Array = dyn_cast<ConstantArray>(GV.getInitializer());
- // If values are not pointers, do not generate a relative lookup table.
- if (!Array || !Array->getType()->getElementType()->isPointerTy())
+ if (!Array)
return false;
+ // If values are not 64-bit pointers, do not generate a relative lookup table.
const DataLayout &DL = M.getDataLayout();
+ Type *ElemType = Array->getType()->getElementType();
+ if (!ElemType->isPointerTy() || DL.getPointerTypeSizeInBits(ElemType) != 64)
+ return false;
+
for (const Use &Op : Array->operands()) {
Constant *ConstOp = cast<Constant>(&Op);
GlobalValue *GVOp;