Revert r198208 and reapply:

[oota-llvm.git] / include / llvm-c / lto.h

diff --git a/include/llvm-c/lto.h b/include/llvm-c/lto.h
index 40110fddfc1396c12818b8781bd6ac9090e0109b..89f54b7a7b7470fd9ea9aa46d2e32a4bd550ed0c 100644 (file)
--- a/include/llvm-c/lto.h
+++ b/include/llvm-c/lto.h
@@ -16,9 +16,22 @@
 #ifndef LLVM_C_LTO_H
 #define LLVM_C_LTO_H
 
-#include <stdbool.h>
 #include <stddef.h>
-#include <unistd.h>
+#include <sys/types.h>
+
+#ifndef __cplusplus
+#if !defined(_MSC_VER)
+#include <stdbool.h>
+typedef bool lto_bool_t;
+#else
+/* MSVC in particular does not have anything like _Bool or bool in C, but we can
+   at least make sure the type is the same size.  The implementation side will
+   use C++ bool. */
+typedef unsigned char lto_bool_t;
+#endif
+#else
+typedef bool lto_bool_t;
+#endif
 
 /**
  * @defgroup LLVMCLTO LTO
@@ -27,7 +40,7 @@
  * @{
  */
 
-#define LTO_API_VERSION 4
+#define LTO_API_VERSION 5
 
 typedef enum {
     LTO_SYMBOL_ALIGNMENT_MASK              = 0x0000001F, /* log2 of alignment */
@@ -87,14 +100,14 @@ lto_get_error_message(void);
 /**
  * Checks if a file is a loadable object file.
  */
-extern bool
+extern lto_bool_t
 lto_module_is_object_file(const char* path);
 
 
 /**
  * Checks if a file is a loadable object compiled for requested target.
  */
-extern bool
+extern lto_bool_t
 lto_module_is_object_file_for_target(const char* path,
                                      const char* target_triple_prefix);
 
@@ -102,14 +115,14 @@ lto_module_is_object_file_for_target(const char* path,
 /**
  * Checks if a buffer is a loadable object file.
  */
-extern bool
+extern lto_bool_t
 lto_module_is_object_file_in_memory(const void* mem, size_t length);
 
 
 /**
  * Checks if a buffer is a loadable object compiled for requested target.
  */
-extern bool
+extern lto_bool_t
 lto_module_is_object_file_in_memory_for_target(const void* mem, size_t length,
                                               const char* target_triple_prefix);
 
@@ -208,7 +221,7 @@ lto_codegen_dispose(lto_code_gen_t);
  * Add an object module to the set of modules for which code will be generated.
  * Returns true on error (check lto_get_error_message() for details).
  */
-extern bool
+extern lto_bool_t
 lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod);
 
 
@@ -217,7 +230,7 @@ lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod);
  * Sets if debug info should be generated.
  * Returns true on error (check lto_get_error_message() for details).
  */
-extern bool
+extern lto_bool_t
 lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model);
 
 
@@ -225,7 +238,7 @@ lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model);
  * Sets which PIC code model to generated.
  * Returns true on error (check lto_get_error_message() for details).
  */
-extern bool
+extern lto_bool_t
 lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model);
 
 
@@ -251,9 +264,8 @@ lto_codegen_set_assembler_args(lto_code_gen_t cg, const char **args,
                                int nargs);
 
 /**
- * Adds to a list of all global symbols that must exist in the final
- * generated code.  If a function is not listed, it might be
- * inlined into every usage and optimized away.
+ * Tells LTO optimization passes that this symbol must be preserved
+ * because it is referenced by native code or a command line option.
  */
 extern void
 lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, const char* symbol);
@@ -263,7 +275,7 @@ lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, const char* symbol);
  * merged contents of all modules added so far.
  * Returns true on error (check lto_get_error_message() for details).
  */
-extern bool
+extern lto_bool_t
 lto_codegen_write_merged_modules(lto_code_gen_t cg, const char* path);
 
 /**
@@ -281,7 +293,7 @@ lto_codegen_compile(lto_code_gen_t cg, size_t* length);
  * Generates code for all added modules into one native object file.
  * The name of the file is written to name. Returns true on error.
  */
-extern bool
+extern lto_bool_t
 lto_codegen_compile_to_file(lto_code_gen_t cg, const char** name);