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41 lines
1.7 KiB
TableGen
41 lines
1.7 KiB
TableGen
//===- ARCCallingConv.td - Calling Conventions for ARC -----*- tablegen -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// This describes the calling conventions for ARC architecture.
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// ARC Return Value Calling Convention
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//===----------------------------------------------------------------------===//
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def RetCC_ARC : CallingConv<[
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// i32 are returned in registers R0, R1, R2, R3
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CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3]>>,
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// Integer values get stored in stack slots that are 4 bytes in
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// size and 4-byte aligned.
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CCIfType<[i64], CCAssignToStack<8, 4>>,
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CCIfType<[i32], CCAssignToStack<4, 4>>
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]>;
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//===----------------------------------------------------------------------===//
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// ARC Argument Calling Conventions
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//===----------------------------------------------------------------------===//
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def CC_ARC : CallingConv<[
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// Promote i8/i16 arguments to i32.
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CCIfType<[i8, i16], CCPromoteToType<i32>>,
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// The first 8 integer arguments are passed in integer registers.
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CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3, R4, R5, R6, R7]>>,
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// Integer values get stored in stack slots that are 4 bytes in
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// size and 4-byte aligned.
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CCIfType<[i64], CCAssignToStack<8, 4>>,
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CCIfType<[i32], CCAssignToStack<4, 4>>
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]>;
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def CSR_ARC : CalleeSavedRegs<(add (sequence "R%u", 13, 25), GP, FP)>;
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