Only emit movw on ARMv6T2+

[oota-llvm.git] / lib / Target / MSP430 / MSP430CallingConv.td

diff --git a/lib/Target/MSP430/MSP430CallingConv.td b/lib/Target/MSP430/MSP430CallingConv.td
index e5826982279a69387c7febf74e42a45f21f59a0a..8a69d1ecb2872f367ae33e6515becf608477eb12 100644 (file)
--- a/lib/Target/MSP430/MSP430CallingConv.td
+++ b/lib/Target/MSP430/MSP430CallingConv.td
@@ -13,6 +13,9 @@
 // MSP430 Return Value Calling Convention
 //===----------------------------------------------------------------------===//
 def RetCC_MSP430 : CallingConv<[
+  // i8 are returned in registers R15B, R14B, R13B, R12B
+  CCIfType<[i8], CCAssignToReg<[R15B, R14B, R13B, R12B]>>,
+
   // i16 are returned in registers R15, R14, R13, R12
   CCIfType<[i16], CCAssignToReg<[R15W, R14W, R13W, R12W]>>
 ]>;
@@ -20,15 +23,15 @@ def RetCC_MSP430 : CallingConv<[
 //===----------------------------------------------------------------------===//
 // MSP430 Argument Calling Conventions
 //===----------------------------------------------------------------------===//
-def CC_MSP430 : CallingConv<[
+def CC_MSP430_AssignStack : CallingConv<[
+  // Pass by value if the byval attribute is given
+  CCIfByVal<CCPassByVal<2, 2>>,
+
   // Promote i8 arguments to i16.
   CCIfType<[i8], CCPromoteToType<i16>>,
 
-  // The first 4 integer arguments of non-varargs functions are passed in
-  // integer registers.
-  CCIfNotVarArg<CCIfType<[i16], CCAssignToReg<[R15W, R14W, R13W, R12W]>>>,
-
   // Integer values get stored in stack slots that are 2 bytes in
   // size and 2-byte aligned.
   CCIfType<[i16], CCAssignToStack<2, 2>>
 ]>;
+