From 5aa20826587e3ca5917481447b05f7d8b50ac7ec Mon Sep 17 00:00:00 2001
From: Robert Widmann <devteam.codafi@gmail.com>
Date: Tue, 9 Apr 2019 22:27:51 +0000
Subject: [PATCH] [LLVM-C] Add Bindings to Access an Instruction's DebugLoc

Summary: Provide direct accessors to supplement LLVMSetInstDebugLocation.  In addition, properly accept and return the NULL location.  The old accessors provided no way to do this, so the current debug location cannot currently be cleared.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60481

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358038 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm-c/DebugInfo.h | 16 ++++++++++++++++
 lib/IR/DebugInfo.cpp       | 11 +++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/llvm-c/DebugInfo.h b/include/llvm-c/DebugInfo.h
index 99e977da15e..655b80d2796 100644
--- a/include/llvm-c/DebugInfo.h
+++ b/include/llvm-c/DebugInfo.h
@@ -1192,6 +1192,22 @@ LLVMMetadataRef LLVMGetSubprogram(LLVMValueRef Func);
  */
 void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP);
 
+/**
+ * Get the debug location for the given instruction.
+ *
+ * @see llvm::Instruction::getDebugLoc()
+ */
+LLVMMetadataRef LLVMInstructionGetDebugLoc(LLVMValueRef Inst);
+
+/**
+ * Set the debug location for the given instruction.
+ *
+ * To clear the location metadata of the given instruction, pass NULL to \p Loc.
+ *
+ * @see llvm::Instruction::setDebugLoc()
+ */
+void LLVMInstructionSetDebugLoc(LLVMValueRef Inst, LLVMMetadataRef Loc);
+
 /**
  * Obtain the enumerated type of a Metadata instance.
  *
diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index a9d91214a80..ef21b6a555f 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -1355,6 +1355,17 @@ void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP) {
   unwrap<Function>(Func)->setSubprogram(unwrap<DISubprogram>(SP));
 }
 
+LLVMMetadataRef LLVMInstructionGetDebugLoc(LLVMValueRef Inst) {
+  return wrap(unwrap<Instruction>(Inst)->getDebugLoc().getAsMDNode());
+}
+
+void LLVMInstructionSetDebugLoc(LLVMValueRef Inst, LLVMMetadataRef Loc) {
+  if (Loc)
+    unwrap<Instruction>(Inst)->setDebugLoc(DebugLoc(unwrap<MDNode>(Loc)));
+  else
+    unwrap<Instruction>(Inst)->setDebugLoc(DebugLoc());
+}
+
 LLVMMetadataKind LLVMGetMetadataKind(LLVMMetadataRef Metadata) {
   switch(unwrap(Metadata)->getMetadataID()) {
 #define HANDLE_METADATA_LEAF(CLASS) \
-- 
2.50.1