[opaque pointer type] Explicit pointee type for GEPOperator/GEPConstantExpr.

Also a couple of other changes to avoid use of
PointerType::getElementType here & there too.

llvm-svn: 236799

1 files changed, 13 insertions, 0 deletions

diff --git a/llvm/lib/IR/Operator.cpp b/llvm/lib/IR/Operator.cpp
new file mode 100644
index 00000000000..dd62b04c867
--- /dev/null
+++ b/llvm/lib/IR/Operator.cpp
@@ -0,0 +1,13 @@
+#include "llvm/IR/Operator.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Type.h"
+
+#include "ConstantsContext.h"
+
+namespace llvm {
+Type *GEPOperator::getSourceElementType() const {
+  if (auto *I = dyn_cast<GetElementPtrInst>(this))
+    return I->getSourceElementType();
+  return cast<GetElementPtrConstantExpr>(this)->getSourceElementType();
+}
+}