[LLVM-C] Add Accessors For Global Variable Metadata Properties

Summary: Metadata for a global variable is really a  (GlobalVariable, Expression) tuple.  Allow access to these, then allow retrieving the file, scope, and line for a DIVariable, whether global or local.  This should be the last of the accessors required for uniform access to location and file information metadata.

Reviewers: jberdine, whitequark, deadalnix

Reviewed By: jberdine, whitequark

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60725

llvm-svn: 358532

1 files changed, 25 insertions, 0 deletions

diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index 773d547a136..124462355cd 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -1248,6 +1248,27 @@ LLVMMetadataRef LLVMDIBuilderCreateGlobalVariableExpression(
       nullptr, AlignInBits));
 }
 
+LLVMMetadataRef LLVMDIGlobalVariableExpressionGetVariable(LLVMMetadataRef GVE) {
+  return wrap(unwrapDI<DIGlobalVariableExpression>(GVE)->getVariable());
+}
+
+LLVMMetadataRef LLVMDIGlobalVariableExpressionGetExpression(
+    LLVMMetadataRef GVE) {
+  return wrap(unwrapDI<DIGlobalVariableExpression>(GVE)->getExpression());
+}
+
+LLVMMetadataRef LLVMDIVariableGetFile(LLVMMetadataRef Var) {
+  return wrap(unwrapDI<DIVariable>(Var)->getFile());
+}
+
+LLVMMetadataRef LLVMDIVariableGetScope(LLVMMetadataRef Var) {
+  return wrap(unwrapDI<DIVariable>(Var)->getScope());
+}
+
+unsigned LLVMDIVariableGetLine(LLVMMetadataRef Var) {
+  return unwrapDI<DIVariable>(Var)->getLine();
+}
+
 LLVMMetadataRef LLVMTemporaryMDNode(LLVMContextRef Ctx, LLVMMetadataRef *Data,
                                     size_t Count) {
   return wrap(
@@ -1359,6 +1380,10 @@ void LLVMSetSubprogram(LLVMValueRef Func, LLVMMetadataRef SP) {
   unwrap<Function>(Func)->setSubprogram(unwrap<DISubprogram>(SP));
 }
 
+unsigned LLVMDISubprogramGetLine(LLVMMetadataRef Subprogram) {
+  return unwrapDI<DISubprogram>(Subprogram)->getLine();
+}
+
 LLVMMetadataRef LLVMInstructionGetDebugLoc(LLVMValueRef Inst) {
   return wrap(unwrap<Instruction>(Inst)->getDebugLoc().getAsMDNode());
 }