[PATCH] D56279: [LLVM-C] Allow For Creating a BasicBlock without a Parent Function

[Robert Widmann via Phabricator via llvm-commits]

CodaFi created this revision.
CodaFi added reviewers: whitequark, deadalnix.
Herald added a subscriber: llvm-commits.

Add a utility function for creating a basic block without a parent function.  A useful operation for compilers that need to synthesize and conditionally insert code without having to bother with appending and immediately unlinking a block.


Repository:
  rL LLVM

https://reviews.llvm.org/D56279

Files:
  include/llvm-c/Core.h
  lib/IR/Core.cpp


Index: lib/IR/Core.cpp
===================================================================
--- lib/IR/Core.cpp
+++ lib/IR/Core.cpp
@@ -2533,6 +2533,12 @@
   return wrap(&*--I);
 }
 
+LLVMBasicBlockRef LLVMCreateBasicBlockInContext(LLVMContextRef C,
+                                                const char *Name,
+                                                unsigned NameLen) {
+  return wrap(llvm::BasicBlock::Create(*unwrap(C), StringRef(Name, NameLen)));
+}
+
 LLVMBasicBlockRef LLVMAppendBasicBlockInContext(LLVMContextRef C,
                                                 LLVMValueRef FnRef,
                                                 const char *Name) {
Index: include/llvm-c/Core.h
===================================================================
--- include/llvm-c/Core.h
+++ include/llvm-c/Core.h
@@ -2806,6 +2806,15 @@
  */
 LLVMBasicBlockRef LLVMGetEntryBasicBlock(LLVMValueRef Fn);
 
+/**
+ * Create a new basic block without inserting it into a function.
+ *
+ * @see llvm::BasicBlock::Create()
+ */
+LLVMBasicBlockRef LLVMCreateBasicBlockInContext(LLVMContextRef C,
+                                                const char *Name,
+                                                unsigned NameLen);
+
 /**
  * Append a basic block to the end of a function.
  *


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