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62 lines
2.2 KiB
TableGen
62 lines
2.2 KiB
TableGen
//=- TriCoreCallingConv.td - Calling Conventions for TriCore -*- tablegen -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// This describes the calling conventions for TriCore architecture.
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// CCDelegate implemented form TriCore LLVM Thesis
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//===----------------------------------------------------------------------===//
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//def CC_TriCore_StackModel : CallingConv<[
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//CCAssignToStack<4, 4>
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//]>;
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//===----------------------------------------------------------------------===//
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// TriCore Return Value Calling Convention
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//===----------------------------------------------------------------------===//
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def RetCC_TriCore : CallingConv<[
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// Promote i8/i16 arguments to i32.
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CCIfType<[i8, i16], CCPromoteToType<i32>>,
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// i32 are returned in registers D2
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CCIfType<[i32], CCAssignToReg<[D2]>>,
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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<[i32], CCAssignToStack<4, 4>>
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]>;
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//===----------------------------------------------------------------------===//
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// TriCore Argument Calling Conventions
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//===----------------------------------------------------------------------===//
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def CC_TriCore : 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 4 integer arguments are passed in integer registers.
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// CCIfType<[i32], CCAssignToReg<[D4, D5, D6, D7]>>,
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//CCIfType<[i32], CCAssignToReg<[A4, A5, A6, A7]>>,
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// Pointer arguments are handled inside TriCoreIselLowering, because
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// LLVM lowers i32** type into i32, hence there is no way to distingusish
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// between a pointer type and an integer type.
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//CCDelegateTo<CC_TriCore_StackModel>
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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<[i32], CCAssignToStack<4, 4>>
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]>;
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//def CC_Save : CalleeSavedRegs<(add R4, R5, R6, R7, R8, R9)>;
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