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-rw-r--r--llvm/lib/IR/LLVMContextImpl.cpp22
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/lib/IR/LLVMContextImpl.cpp b/llvm/lib/IR/LLVMContextImpl.cpp
index aa7242a..880e1c1 100644
--- a/llvm/lib/IR/LLVMContextImpl.cpp
+++ b/llvm/lib/IR/LLVMContextImpl.cpp
@@ -163,6 +163,28 @@ LLVMContextImpl::~LLVMContextImpl() {
MDStringCache.clear();
}
+void LLVMContextImpl::dropTriviallyDeadConstantArrays() {
+ bool Changed;
+ do {
+ Changed = false;
+
+ for (auto I = ArrayConstants.map_begin(), E = ArrayConstants.map_end();
+ I != E; ) {
+ auto *C = I->first;
+ I++;
+ if (C->use_empty()) {
+ Changed = true;
+ C->destroyConstant();
+ }
+ }
+
+ } while (Changed);
+}
+
+void Module::dropTriviallyDeadConstantArrays() {
+ Context.pImpl->dropTriviallyDeadConstantArrays();
+}
+
namespace llvm {
/// \brief Make MDOperand transparent for hashing.
///