[llvm-commits] [llvm] r164247 - in /llvm/trunk: include/llvm-c/Core.h lib/VMCore/Core.cpp

[Duncan Sands]

Author: baldrick
Date: Wed Sep 19 15:29:39 2012
New Revision: 164247

URL: http://llvm.org/viewvc/llvm-project?rev=164247&view=rev
Log:
Add support for accessing an MDNode's operands via the C binding.  Patch by
Anthony Bryant.

Modified:
    llvm/trunk/include/llvm-c/Core.h
    llvm/trunk/lib/VMCore/Core.cpp

Modified: llvm/trunk/include/llvm-c/Core.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm-c/Core.h?rev=164247&r1=164246&r2=164247&view=diff
==============================================================================
--- llvm/trunk/include/llvm-c/Core.h (original)
+++ llvm/trunk/include/llvm-c/Core.h Wed Sep 19 15:29:39 2012
@@ -1869,6 +1869,27 @@
 const char  *LLVMGetMDString(LLVMValueRef V, unsigned* Len);
 
 /**
+ * Obtain the number of operands from an MDNode value.
+ *
+ * @param V MDNode to get number of operands from.
+ * @return Number of operands of the MDNode.
+ */
+unsigned LLVMGetMDNodeNumOperands(LLVMValueRef V);
+
+/**
+ * Obtain the given MDNode's operands.
+ *
+ * The passed LLVMValueRef pointer should point to enough memory to hold all of
+ * the operands of the given MDNode (see LLVMGetMDNodeNumOperands) as
+ * LLVMValueRefs. This memory will be populated with the LLVMValueRefs of the
+ * MDNode's operands.
+ *
+ * @param V MDNode to get the operands from.
+ * @param Dest Destination array for operands.
+ */
+void LLVMGetMDNodeOperands(LLVMValueRef V, LLVMValueRef *Dest);
+
+/**
  * @}
  */
 

Modified: llvm/trunk/lib/VMCore/Core.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/VMCore/Core.cpp?rev=164247&r1=164246&r2=164247&view=diff
==============================================================================
--- llvm/trunk/lib/VMCore/Core.cpp (original)
+++ llvm/trunk/lib/VMCore/Core.cpp Wed Sep 19 15:29:39 2012
@@ -568,6 +568,19 @@
   return 0;
 }
 
+unsigned LLVMGetMDNodeNumOperands(LLVMValueRef V)
+{
+  return cast<MDNode>(unwrap(V))->getNumOperands();
+}
+
+void LLVMGetMDNodeOperands(LLVMValueRef V, LLVMValueRef *Dest)
+{
+  const MDNode *N = cast<MDNode>(unwrap(V));
+  const unsigned numOperands = N->getNumOperands();
+  for (unsigned i = 0; i < numOperands; i++)
+    Dest[i] = wrap(N->getOperand(i));
+}
+
 unsigned LLVMGetNamedMetadataNumOperands(LLVMModuleRef M, const char* name)
 {
   if (NamedMDNode *N = unwrap(M)->getNamedMetadata(name)) {