[IR] Limit bits used for CallingConv::ID, update tests

[oota-llvm.git] / include / llvm / IR / CallingConv.h

diff --git a/include/llvm/IR/CallingConv.h b/include/llvm/IR/CallingConv.h
index af44e8a30c347a8d0f1bf88f17057dbff7de9ccc..ac7cc9b74ab95f1764bf91bebc9165dc6827c62f 100644 (file)
--- a/include/llvm/IR/CallingConv.h
+++ b/include/llvm/IR/CallingConv.h
@@ -20,10 +20,13 @@ namespace llvm {
 /// the well-known calling conventions.
 ///
 namespace CallingConv {
+  /// LLVM IR allows to use arbitrary numbers as calling convention identifiers.
+  typedef unsigned ID;
+
   /// A set of enums which specify the assigned numeric values for known llvm
   /// calling conventions.
   /// @brief LLVM Calling Convention Representation
-  enum ID {
+  enum {
     /// C - The default llvm calling convention, compatible with C.  This
     /// convention is the only calling convention that supports varargs calls.
     /// As with typical C calling conventions, the callee/caller have to
@@ -66,6 +69,9 @@ namespace CallingConv {
     // (almost) all registers.
     PreserveAll = 15,
 
+    // Swift - Calling convention for Swift.
+    Swift = 16,
+
     // Target - This is the start of the target-specific calling conventions,
     // e.g. fastcall and thiscall on X86.
     FirstTargetCC = 64,
@@ -139,11 +145,21 @@ namespace CallingConv {
     /// arguments are shadowed by GPRs, and vice versa.
     X86_64_Win64 = 79,
 
-    /// \brief The calling convention used for __cdecl methods on win32.
-    /// Differs from the C calling convention only in that the order of the
-    /// first parameter and the sret parameter are swapped.
-    X86_CDeclMethod = 80
+    /// \brief MSVC calling convention that passes vectors and vector aggregates
+    /// in SSE registers.
+    X86_VectorCall = 80,
+
+    /// \brief Calling convention used by HipHop Virtual Machine (HHVM) to
+    /// perform calls to and from translation cache, and for calling PHP
+    /// functions.
+    /// HHVM calling convention supports tail/sibling call elimination.
+    HHVM = 81,
+
+    /// \brief HHVM calling convention for invoking C/C++ helpers.
+    HHVM_C = 82,
 
+    /// The highest possible calling convention ID. Must be some 2^k - 1.
+    MaxID = 1023
   };
 } // End CallingConv namespace