[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

llvm-svn: 350196

include/llvm-c/Core.h

@@ -520,6 +520,23 @@ void *LLVMContextGetDiagnosticContext(LLVMContextRef C);
 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.
  *

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);
 }