[LLVM-C] Add Accessors for Discarding Value Names in the IR

Summary: Add accessors so the performance improvement from this setting is accessible to third parties.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D56179

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350196 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm-c/Core.h b/include/llvm-c/Core.h
index 0784275..ebf79a4 100644 (file)
--- a/include/llvm-c/Core.h
+++ b/include/llvm-c/Core.h
@@ -521,6 +521,23 @@ void LLVMContextSetYieldCallback(LLVMContextRef C, LLVMYieldCallback Callback,
                                  void *OpaqueHandle);
 
 /**
+ * Retrieve whether the given context is set to discard all value names.
+ *
+ * @see LLVMContext::shouldDiscardValueNames()
+ */
+bool LLVMContextShouldDiscardValueNames(LLVMContextRef C);
+
+/**
+ * Set whether the given context discards all value names.
+ *
+ * If true, only the names of GlobalValue objects will be available in the IR.
+ * This can be used to save memory and runtime, especially in release mode.
+ *
+ * @see LLVMContext::setDiscardValueNames()
+ */
+void LLVMContextSetDiscardValueNames(LLVMContextRef C, bool Discard);
+
+/**
  * Destroy a context instance.
  *
  * This should be called for every call to LLVMContextCreate() or memory

diff --git a/lib/IR/Core.cpp b/lib/IR/Core.cpp
index a306573..77d93dd 100644 (file)
--- a/lib/IR/Core.cpp
+++ b/lib/IR/Core.cpp
@@ -108,6 +108,14 @@ void LLVMContextSetYieldCallback(LLVMContextRef C, LLVMYieldCallback Callback,
   unwrap(C)->setYieldCallback(YieldCallback, OpaqueHandle);
 }
 
+bool LLVMContextShouldDiscardValueNames(LLVMContextRef C) {
+  return unwrap(C)->shouldDiscardValueNames();
+}
+
+void LLVMContextSetDiscardValueNames(LLVMContextRef C, bool Discard) {
+  unwrap(C)->setDiscardValueNames(Discard);
+}
+
 void LLVMContextDispose(LLVMContextRef C) {
   delete unwrap(C);
 }