-//===- SparcCallingConv.td - Calling Conventions Sparc -----*- tablegen -*-===//
-//
+//===-- SparcCallingConv.td - Calling Conventions Sparc ----*- tablegen -*-===//
+//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This describes the calling conventions for the Sparc architectures.
// Sparc 32-bit C return-value convention.
def RetCC_Sparc32 : CallingConv<[
- CCIfType<[i32], CCAssignToReg<[I0, I1]>>,
- CCIfType<[f32], CCAssignToReg<[F0]>>,
- CCIfType<[f64], CCAssignToReg<[D0]>>
+ CCIfType<[i32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
+ CCIfType<[f32], CCAssignToReg<[F0, F1, F2, F3]>>,
+ CCIfType<[f64], CCAssignToReg<[D0, D1]>>
+]>;
+
+// Sparc 32-bit C Calling convention.
+def CC_Sparc32 : CallingConv<[
+ //Custom assign SRet to [sp+64].
+ CCIfSRet<CCCustom<"CC_Sparc_Assign_SRet">>,
+ // i32 f32 arguments get passed in integer registers if there is space.
+ CCIfType<[i32, f32], CCAssignToReg<[I0, I1, I2, I3, I4, I5]>>,
+ // f64 arguments are split and passed through registers or through stack.
+ CCIfType<[f64], CCCustom<"CC_Sparc_Assign_f64">>,
+
+ // Alternatively, they are assigned to the stack in 4-byte aligned units.
+ CCAssignToStack<4, 4>
]>;