[LLVM-C] Add an accessor for the "value type" of a global

Summary: Before this, there was no reasonable way to retrieve the type of a global value (most notably, a function) that was created with  the C API.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D52659

llvm-svn: 343363

diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
index de6e3d0..f7f2238 100644 (file)
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -2104,6 +2104,14 @@ void LLVMSetDLLStorageClass(LLVMValueRef Global, LLVMDLLStorageClass Class);
 LLVMUnnamedAddr LLVMGetUnnamedAddress(LLVMValueRef Global);
 void LLVMSetUnnamedAddress(LLVMValueRef Global, LLVMUnnamedAddr UnnamedAddr);
 
+/**
+ * Returns the "value type" of a global value.  This differs from the formal
+ * type of a global value which is always a pointer type.
+ *
+ * @see llvm::GlobalValue::getValueType()
+ */
+LLVMTypeRef LLVMGlobalGetValueType(LLVMValueRef Global);
+
 /** Deprecated: Use LLVMGetUnnamedAddress instead. */
 LLVMBool LLVMHasUnnamedAddr(LLVMValueRef Global);
 /** Deprecated: Use LLVMSetUnnamedAddress instead. */

diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index 5af080e..410a426 100644 (file)
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -1876,6 +1876,10 @@ void LLVMSetUnnamedAddr(LLVMValueRef Global, LLVMBool HasUnnamedAddr) {
                      : GlobalValue::UnnamedAddr::None);
 }
 
+LLVMTypeRef LLVMGlobalGetValueType(LLVMValueRef Global) {
+  return wrap(unwrap<GlobalValue>(Global)->getValueType());
+}
+
 /*--.. Operations on global variables, load and store instructions .........--*/
 
 unsigned LLVMGetAlignment(LLVMValueRef V) {