[opaque pointer type] Start migrating GEP creation to explicitly specify the pointee type

I'm just going to migrate these in a pretty ad-hoc & incremental way -
providing the backwards compatible API for now, then locally removing
it, fixing a few callers, adding it back in and commiting those callers.
Rinse, repeat.

The assertions should ensure that if I get this wrong we'll find out
about it and not just have one giant patch to revert, recommit, revert,
recommit, etc.

llvm-svn: 232240

1 files changed, 8 insertions, 6 deletions

diff --git a/llvm/lib/IR/Constants.cpp b/llvm/lib/IR/Constants.cpp
index f5d901c2cc6..e51a396a0bf 100644
--- a/llvm/lib/IR/Constants.cpp
+++ b/llvm/lib/IR/Constants.cpp
@@ -3001,12 +3001,14 @@ Instruction *ConstantExpr::getAsInstruction() {
   case Instruction::ShuffleVector:
     return new ShuffleVectorInst(Ops[0], Ops[1], Ops[2]);
 
-  case Instruction::GetElementPtr:
-    if (cast<GEPOperator>(this)->isInBounds())
-      return GetElementPtrInst::CreateInBounds(Ops[0], Ops.slice(1));
-    else
-      return GetElementPtrInst::Create(Ops[0], Ops.slice(1));
-
+  case Instruction::GetElementPtr: {
+    const auto *GO = cast<GEPOperator>(this);
+    if (GO->isInBounds())
+      return GetElementPtrInst::CreateInBounds(GO->getSourceElementType(),
+                                               Ops[0], Ops.slice(1));
+    return GetElementPtrInst::Create(GO->getSourceElementType(), Ops[0],
+                                     Ops.slice(1));
+  }
   case Instruction::ICmp:
   case Instruction::FCmp:
     return CmpInst::Create((Instruction::OtherOps)getOpcode(),