vendor/llvm-project/llvmorg-11-init-20887-g2e10b7a39b9vendor/llvm-project/master

1 files changed, 21 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/ConstantInitBuilder.cpp b/clang/lib/CodeGen/ConstantInitBuilder.cpp
index 2d63d88020bed..24e3ca19709cb 100644
--- a/clang/lib/CodeGen/ConstantInitBuilder.cpp
+++ b/clang/lib/CodeGen/ConstantInitBuilder.cpp
@@ -128,8 +128,14 @@ void ConstantAggregateBuilderBase::addSize(CharUnits size) {
 llvm::Constant *
 ConstantAggregateBuilderBase::getRelativeOffset(llvm::IntegerType *offsetType,
                                                 llvm::Constant *target) {
+  return getRelativeOffsetToPosition(offsetType, target,
+                                     Builder.Buffer.size() - Begin);
+}
+
+llvm::Constant *ConstantAggregateBuilderBase::getRelativeOffsetToPosition(
+    llvm::IntegerType *offsetType, llvm::Constant *target, size_t position) {
   // Compute the address of the relative-address slot.
-  auto base = getAddrOfCurrentPosition(offsetType);
+  auto base = getAddrOfPosition(offsetType, position);
 
   // Subtract.
   base = llvm::ConstantExpr::getPtrToInt(base, Builder.CGM.IntPtrTy);
@@ -145,6 +151,20 @@ ConstantAggregateBuilderBase::getRelativeOffset(llvm::IntegerType *offsetType,
 }
 
 llvm::Constant *
+ConstantAggregateBuilderBase::getAddrOfPosition(llvm::Type *type,
+                                                size_t position) {
+  // Make a global variable.  We will replace this with a GEP to this
+  // position after installing the initializer.
+  auto dummy = new llvm::GlobalVariable(Builder.CGM.getModule(), type, true,
+                                        llvm::GlobalVariable::PrivateLinkage,
+                                        nullptr, "");
+  Builder.SelfReferences.emplace_back(dummy);
+  auto &entry = Builder.SelfReferences.back();
+  (void)getGEPIndicesTo(entry.Indices, position + Begin);
+  return dummy;
+}
+
+llvm::Constant *
 ConstantAggregateBuilderBase::getAddrOfCurrentPosition(llvm::Type *type) {
   // Make a global variable.  We will replace this with a GEP to this
   // position after installing the initializer.