[LLVM-C] Add binding to look up intrinsic by name

Summary: Add a binding to Function::lookupIntrinsicID so clients don't have to go searching the ID table themselves.

Reviewers: whitequark, deadalnix

Reviewed By: whitequark

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59697

llvm-svn: 356948

2 files changed, 11 insertions, 0 deletions

diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
index 9c521899c95..393250f7f8c 100644
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -2403,6 +2403,13 @@ LLVMValueRef LLVMGetPersonalityFn(LLVMValueRef Fn);
 void LLVMSetPersonalityFn(LLVMValueRef Fn, LLVMValueRef PersonalityFn);
 
 /**
+ * Obtain the intrinsic ID number which matches the given function name.
+ *
+ * @see llvm::Function::lookupIntrinsicID()
+ */
+unsigned LLVMLookupIntrinsicID(const char *Name, size_t NameLen);
+
+/**
  * Obtain the ID number from a function instance.
  *
  * @see llvm::Function::getIntrinsicID()
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index 1b8ad4823f9..aa6bc542b4e 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -2329,6 +2329,10 @@ const char *LLVMIntrinsicCopyOverloadedName(unsigned ID,
   return strdup(Str.c_str());
 }
 
+unsigned LLVMLookupIntrinsicID(const char *Name, size_t NameLen) {
+  return Function::lookupIntrinsicID({Name, NameLen});
+}
+
 LLVMBool LLVMIntrinsicIsOverloaded(unsigned ID) {
   auto IID = llvm_map_to_intrinsic_id(ID);
   return llvm::Intrinsic::isOverloaded(IID);