Update llvm-c headers for Version 11.0.1

src/llvm-c/Remarks.h

@@ -15,14 +15,16 @@
 #ifndef LLVM_C_REMARKS_H
 #define LLVM_C_REMARKS_H
 
+#include "ExternC.h"
 #include "Types.h"
 #ifdef __cplusplus
 #include <cstddef>
-extern "C" {
 #else
 #include <stddef.h>
 #endif /* !defined(__cplusplus) */
 
+LLVM_C_EXTERN_C_BEGIN
+
 /**
  * @defgroup LLVMCREMARKS Remarks
  * @ingroup LLVMC
@@ -30,7 +32,8 @@ extern "C" {
  * @{
  */
 
-#define REMARKS_API_VERSION 0
+// 0 -> 1: Bitstream remarks support.
+#define REMARKS_API_VERSION 1
 
 /**
  * The type of the emitted remark.
@@ -240,6 +243,20 @@ typedef struct LLVMRemarkOpaqueParser *LLVMRemarkParserRef;
 extern LLVMRemarkParserRef LLVMRemarkParserCreateYAML(const void *Buf,
                                                       uint64_t Size);
 
+/**
+ * Creates a remark parser that can be used to parse the buffer located in \p
+ * Buf of size \p Size bytes.
+ *
+ * \p Buf cannot be `NULL`.
+ *
+ * This function should be paired with LLVMRemarkParserDispose() to avoid
+ * leaking resources.
+ *
+ * \since REMARKS_API_VERSION=1
+ */
+extern LLVMRemarkParserRef LLVMRemarkParserCreateBitstream(const void *Buf,
+                                                           uint64_t Size);
+
 /**
  * Returns the next remark in the file.
  *
@@ -322,8 +339,6 @@ extern uint32_t LLVMRemarkVersion(void);
  * @} // endgoup LLVMCREMARKS
  */
 
-#ifdef __cplusplus
-}
-#endif /* !defined(__cplusplus) */
+LLVM_C_EXTERN_C_END
 
 #endif /* LLVM_C_REMARKS_H */