[Bitcode] Enumerate constexpr GEP source element type in initializer

The constexpr source element type was enumerated if the GEP was
used as part of an instruction. However, things like global
initializers go through a different code path, and we need to
enumerate the type there as well.

1 files changed, 4 insertions, 1 deletions

diff --git a/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp b/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
index 01f7e85..18157d5 100644
--- a/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/llvm/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -939,9 +939,12 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
            I != E; ++I)
         if (!isa<BasicBlock>(*I)) // Don't enumerate BB operand to BlockAddress.
           EnumerateValue(*I);
-      if (auto *CE = dyn_cast<ConstantExpr>(C))
+      if (auto *CE = dyn_cast<ConstantExpr>(C)) {
         if (CE->getOpcode() == Instruction::ShuffleVector)
           EnumerateValue(CE->getShuffleMaskForBitcode());
+        if (auto *GEP = dyn_cast<GEPOperator>(CE))
+          EnumerateType(GEP->getSourceElementType());
+      }
 
       // Finally, add the value.  Doing this could make the ValueID reference be
       // dangling, don't reuse it.