-//===- MipsCallingConv.td - Calling Conventions for Mips --------*- C++ -*-===//
-//
+//===- MipsCallingConv.td - Calling Conventions for Mips ---*- 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 Mips architecture.
//===----------------------------------------------------------------------===//
/// CCIfSubtarget - Match if the current subtarget has a feature F.
-class CCIfSubtarget<string F, CCAction A>:
+class CCIfSubtarget<string F, CCAction A>:
CCIf<!strconcat("State.getTarget().getSubtarget<MipsSubtarget>().", F), A>;
//===----------------------------------------------------------------------===//
// Mips O32 Calling Convention
//===----------------------------------------------------------------------===//
-def CC_MipsO32 : CallingConv<[
- // Promote i8/i16 arguments to i32.
- CCIfType<[i8, i16], CCPromoteToType<i32>>,
-
- // The first 4 integer arguments are passed in integer registers.
- CCIfType<[i32], CCAssignToReg<[A0, A1, A2, A3]>>,
-
- // Integer values get stored in stack slots that are 4 bytes in
- // size and 4-byte aligned.
- CCIfType<[i32], CCAssignToStack<4, 4>>
-]>;
+// Only the return rules are defined here for O32. The rules for argument
+// passing are defined in MipsISelLowering.cpp.
def RetCC_MipsO32 : CallingConv<[
// i32 are returned in registers V0, V1
CCIfType<[i32], CCAssignToReg<[V0, V1]>>,
- // f32 are returned in registers F0, F1
- CCIfType<[f32], CCAssignToReg<[F0, F1]>>,
+ // f32 are returned in registers F0, F2
+ CCIfType<[f32], CCAssignToReg<[F0, F2]>>,
- // f64 are returned in register D0
- CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()", CCAssignToReg<[D0]>>>
+ // f64 are returned in register D0, D1
+ CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()", CCAssignToReg<[D0, D1]>>>
]>;
//===----------------------------------------------------------------------===//
// Mips EABI Calling Convention
//===----------------------------------------------------------------------===//
+
def CC_MipsEABI : CallingConv<[
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
// Integer arguments are passed in integer registers.
CCIfType<[i32], CCAssignToReg<[A0, A1, A2, A3, T0, T1, T2, T3]>>,
- // Single fp arguments are passed in pairs within 32-bit mode
- CCIfType<[f32], CCIfSubtarget<"isSingleFloat()",
+ // Single fp arguments are passed in pairs within 32-bit mode
+ CCIfType<[f32], CCIfSubtarget<"isSingleFloat()",
CCAssignToReg<[F12, F13, F14, F15, F16, F17, F18, F19]>>>,
- CCIfType<[f32], CCIfSubtarget<"isNotSingleFloat()",
+ CCIfType<[f32], CCIfSubtarget<"isNotSingleFloat()",
CCAssignToReg<[F12, F14, F16, F18]>>>,
- // The first 4 doubl fp arguments are passed in single fp registers.
- CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()",
+ // The first 4 double fp arguments are passed in single fp registers.
+ CCIfType<[f64], CCIfSubtarget<"isNotSingleFloat()",
CCAssignToReg<[D6, D7, D8, D9]>>>,
// Integer values get stored in stack slots that are 4 bytes in
//===----------------------------------------------------------------------===//
def CC_Mips : CallingConv<[
- CCIfSubtarget<"isABI_EABI()", CCDelegateTo<CC_MipsEABI>>,
- CCDelegateTo<CC_MipsO32>
+ CCIfSubtarget<"isABI_EABI()", CCDelegateTo<CC_MipsEABI>>
]>;
def RetCC_Mips : CallingConv<[