Difference between revisions of "NaplesPUCallingConv.td"
From NaplesPU Documentation
m (Francesco moved page NuPlusCallingConv.td to NaplesPUCallingConv.td) |
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| Line 3: | Line 3: | ||
<syntaxhighlight> | <syntaxhighlight> | ||
| − | //===-- | + | //===-- NaplesPUCallingConv.td - Calling Conventions NaplesPU ----*- tablegen -*-===// |
// | // | ||
// The LLVM Compiler Infrastructure | // The LLVM Compiler Infrastructure | ||
| Line 12: | Line 12: | ||
//===----------------------------------------------------------------------===// | //===----------------------------------------------------------------------===// | ||
// | // | ||
| − | // This describes the calling conventions for the | + | // This describes the calling conventions for the NaplesPU architectures. |
// | // | ||
//===----------------------------------------------------------------------===// | //===----------------------------------------------------------------------===// | ||
| − | def | + | def CC_NaplesPU32 : CallingConv<[ |
// i1, i8 and i16 integers are promoted to i32 by the caller. | // i1, i8 and i16 integers are promoted to i32 by the caller. | ||
| Line 35: | Line 35: | ||
]>; | ]>; | ||
| − | def | + | def RetCC_NaplesPU32 : CallingConv<[ |
CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, | CCIfType<[i1, i8, i16], CCPromoteToType<i32>>, | ||
| Line 46: | Line 46: | ||
//Callee only needs to save the callee-save registers that are used in the body of its subroutine. | //Callee only needs to save the callee-save registers that are used in the body of its subroutine. | ||
| − | def | + | def NaplesPUCSR : CalleeSavedRegs<(add (sequence "S%u", 50, 57), MR_REG, FP_REG, RA_REG, |
(sequence "V%u", 56, 63))>; | (sequence "V%u", 56, 63))>; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 15:58, 21 June 2019
This file describes the conventions to use when a function is called, such as how to pass the arguments and how to return the function results.
//===-- NaplesPUCallingConv.td - Calling Conventions NaplesPU ----*- 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 NaplesPU architectures.
//
//===----------------------------------------------------------------------===//
def CC_NaplesPU32 : CallingConv<[
// i1, i8 and i16 integers are promoted to i32 by the caller.
CCIfType<[i1, i8, i16], CCPromoteToType<i32>>,
CCIfType<[v16i8, v16i16], CCPromoteToType<v16i32>>,
CCIfType<[v8i8, v8i16, v8i32], CCPromoteToType<v8i64>>,
// i32 f32 arguments get passed in integer registers if there is space.
CCIfNotVarArg<CCIfType<[i32, f32], CCAssignToReg<[S0, S1, S2, S3, S4, S5, S6, S7]>>>,
// Vector arguments can be passed in their own registers, as above
CCIfNotVarArg<CCIfType<[v16i32, v16f32], CCAssignToReg<[V0, V1, V2, V3, V4, V5, V6, V7]>>>,
// Stick remaining registers onto stack, aligned by size
CCIfType<[i32, f32], CCAssignToStack<4, 4>>,
CCIfType<[v16i32, v16f32], CCAssignToStack<64, 64>>
]>;
def RetCC_NaplesPU32 : CallingConv<[
CCIfType<[i1, i8, i16], CCPromoteToType<i32>>,
CCIfType<[i32, f32], CCAssignToReg<[S0, S1, S2, S3, S4, S5]>>,
CCIfType<[v16i8, v16i16], CCPromoteToType<v16i32>>,
CCIfType<[v16i32, v16f32], CCAssignToReg<[V0, V1, V2, V3, V4, V5]>>
]>;
//Callee only needs to save the callee-save registers that are used in the body of its subroutine.
def NaplesPUCSR : CalleeSavedRegs<(add (sequence "S%u", 50, 57), MR_REG, FP_REG, RA_REG,
(sequence "V%u", 56, 63))>;