llvm-c: Split Utils out of Scalar.h

To fix layering (so that Scalar.h, a libScalarOpts header, isn't
included from Utils - which libScalarOpts depends on).

llvm-svn: 328839

llvm/include/llvm-c/Transforms/Scalar.h

@@ -95,12 +95,6 @@ void LLVMAddMemCpyOptPass(LLVMPassManagerRef PM);
 /** See llvm::createPartiallyInlineLibCallsPass function. */
 void LLVMAddPartiallyInlineLibCallsPass(LLVMPassManagerRef PM);
 
-/** See llvm::createLowerSwitchPass function. */
-void LLVMAddLowerSwitchPass(LLVMPassManagerRef PM);
-
-/** See llvm::createPromoteMemoryToRegisterPass function. */
-void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM);
-
 /** See llvm::createReassociatePass function. */
 void LLVMAddReassociatePass(LLVMPassManagerRef PM);
 

llvm/include/llvm-c/Transforms/Utils.h

@@ -0,0 +1,50 @@
+/*===-- Utils.h - Transformation Utils Library C Interface ------*- C++ -*-===*\
+|*                                                                            *|
+|*                     The LLVM Compiler Infrastructure                       *|
+|*                                                                            *|
+|* This file is distributed under the University of Illinois Open Source      *|
+|* License. See LICENSE.TXT for details.                                      *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header declares the C interface to libLLVMTransformUtils.a, which     *|
+|* implements various transformation utilities of the LLVM IR.                *|
+|*                                                                            *|
+|* Many exotic languages can interoperate with C code but have a harder time  *|
+|* with C++ due to name mangling. So in addition to C, this interface enables *|
+|* tools written in such languages.                                           *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_TRANSFORMS_UTILS_H
+#define LLVM_C_TRANSFORMS_UTILS_H
+
+#include "llvm-c/Types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup LLVMCTransformsUtils Transformation Utilities
+ * @ingroup LLVMCTransforms
+ *
+ * @{
+ */
+
+/** See llvm::createLowerSwitchPass function. */
+void LLVMAddLowerSwitchPass(LLVMPassManagerRef PM);
+
+/** See llvm::createPromoteMemoryToRegisterPass function. */
+void LLVMAddPromoteMemoryToRegisterPass(LLVMPassManagerRef PM);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif /* defined(__cplusplus) */
+
+#endif
+

llvm/lib/Transforms/Utils/Utils.cpp

@@ -14,7 +14,7 @@
 
 #include "llvm/Transforms/Utils.h"
 #include "llvm-c/Initialization.h"
-#include "llvm-c/Transforms/Scalar.h"
+#include "llvm-c/Transforms/Utils.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/PassRegistry.h"