2 files changed, 114 insertions, 0 deletions
diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
index 509a2e61301..a52f58ec009 100644
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -381,6 +381,57 @@ typedef enum {
   LLVMInlineAsmDialectIntel
 } LLVMInlineAsmDialect;
 
+typedef enum {
+  /**
+   * Emits an error if two values disagree, otherwise the resulting value is
+   * that of the operands.
+   *
+   * @see Module::ModFlagBehavior::Error
+   */
+  LLVMModuleFlagBehaviorError,
+  /**
+   * Emits a warning if two values disagree. The result value will be the
+   * operand for the flag from the first module being linked.
+   *
+   * @see Module::ModFlagBehavior::Warning
+   */
+  LLVMModuleFlagBehaviorWarning,
+  /**
+   * Adds a requirement that another module flag be present and have a
+   * specified value after linking is performed. The value must be a metadata
+   * pair, where the first element of the pair is the ID of the module flag
+   * to be restricted, and the second element of the pair is the value the
+   * module flag should be restricted to. This behavior can be used to
+   * restrict the allowable results (via triggering of an error) of linking
+   * IDs with the **Override** behavior.
+   *
+   * @see Module::ModFlagBehavior::Require
+   */
+  LLVMModuleFlagBehaviorRequire,
+  /**
+   * Uses the specified value, regardless of the behavior or value of the
+   * other module. If both modules specify **Override**, but the values
+   * differ, an error will be emitted.
+   *
+   * @see Module::ModFlagBehavior::Override
+   */
+  LLVMModuleFlagBehaviorOverride,
+  /**
+   * Appends the two values, which are required to be metadata nodes.
+   *
+   * @see Module::ModFlagBehavior::Append
+   */
+  LLVMModuleFlagBehaviorAppend,
+  /**
+   * Appends the two values, which are required to be metadata
+   * nodes. However, duplicate entries in the second list are dropped
+   * during the append operation.
+   *
+   * @see Module::ModFlagBehavior::AppendUnique
+   */
+  LLVMModuleFlagBehaviorAppendUnique,
+} LLVMModuleFlagBehavior;
+
 /**
  * Attribute index are either LLVMAttributeReturnIndex,
  * LLVMAttributeFunctionIndex or a parameter number from 1 to N.
@@ -666,6 +717,64 @@ const char *LLVMGetTarget(LLVMModuleRef M);
 void LLVMSetTarget(LLVMModuleRef M, const char *Triple);
 
 /**
+ * Returns the module flags as an array of flag-key-value triples.  The caller
+ * is responsible for freeing this array by calling
+ * \c LLVMDisposeModuleFlagsMetadata.
+ *
+ * @see Module::getModuleFlagsMetadata()
+ */
+LLVMModuleFlagEntry *LLVMCopyModuleFlagsMetadata(LLVMModuleRef M, size_t *Len);
+
+/**
+ * Destroys module flags metadata entries.
+ */
+void LLVMDisposeModuleFlagsMetadata(LLVMModuleFlagEntry *Entries);
+
+/**
+ * Returns the flag behavior for a module flag entry at a specific index.
+ *
+ * @see Module::ModuleFlagEntry::Behavior
+ */
+LLVMModuleFlagBehavior
+LLVMModuleFlagEntriesGetFlagBehavior(LLVMModuleFlagEntry *Entries,
+                                     unsigned Index);
+
+/**
+ * Returns the key for a module flag entry at a specific index.
+ *
+ * @see Module::ModuleFlagEntry::Key
+ */
+const char *LLVMModuleFlagEntriesGetKey(LLVMModuleFlagEntry *Entries,
+                                        unsigned Index, size_t *Len);
+
+/**
+ * Returns the metadata for a module flag entry at a specific index.
+ *
+ * @see Module::ModuleFlagEntry::Val
+ */
+LLVMMetadataRef LLVMModuleFlagEntriesGetMetadata(LLVMModuleFlagEntry *Entries,
+                                                 unsigned Index);
+
+/**
+ * Add a module-level flag to the module-level flags metadata if it doesn't
+ * already exist.
+ *
+ * @see Module::getModuleFlag()
+ */
+LLVMMetadataRef LLVMGetModuleFlag(LLVMModuleRef M,
+                                  const char *Key, size_t KeyLen);
+
+/**
+ * Add a module-level flag to the module-level flags metadata if it doesn't
+ * already exist.
+ *
+ * @see Module::addModuleFlag()
+ */
+void LLVMAddModuleFlag(LLVMModuleRef M, LLVMModuleFlagBehavior Behavior,
+                       const char *Key, size_t KeyLen,
+                       LLVMMetadataRef Val);
+
+/**
  * Dump a representation of a module to stderr.
  *
  * @see Module::dump()
diff --git a/llvm/include/llvm-c/Types.h b/llvm/include/llvm-c/Types.h
index 17934005139..f812c4145c6 100644
--- a/llvm/include/llvm-c/Types.h
+++ b/llvm/include/llvm-c/Types.h
@@ -140,6 +140,11 @@ typedef struct LLVMOpaqueDiagnosticInfo *LLVMDiagnosticInfoRef;
 typedef struct LLVMComdat *LLVMComdatRef;
 
 /**
+ * @see llvm::Module::ModuleFlagEntry
+ */
+typedef struct LLVMOpaqueModuleFlagEntry LLVMModuleFlagEntry;
+
+/**
  * @}
  */