| //===-- 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| // Return Value Calling Conventions |
| //===----------------------------------------------------------------------===// |
| |
| // Sparc 32-bit C return-value convention. |
| def RetCC_Sparc32 : CallingConv<[ |
| 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> |
| ]>; |