forked from OSchip/llvm-project
40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
//===- MipsCallingConv.td - Calling Conventions for Mips --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Bruno Cardoso Lopes and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// This describes the calling conventions for Mips architecture.
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//===----------------------------------------------------------------------===//
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/// CCIfSubtarget - Match if the current subtarget has a feature F.
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class CCIfSubtarget<string F, CCAction A>:
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CCIf<!strconcat("State.getTarget().getSubtarget<MipsSubtarget>().", F), A>;
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//===----------------------------------------------------------------------===//
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// Mips Return Value Calling Convention
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//===----------------------------------------------------------------------===//
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def RetCC_Mips : CallingConv<[
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// i32 are returned in registers V0, V1
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CCIfType<[i32], CCAssignToReg<[V0, V1]>>
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]>;
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//===----------------------------------------------------------------------===//
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// Mips Argument Calling Conventions
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//===----------------------------------------------------------------------===//
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def CC_Mips : 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<[A0, A1, A2, A3]>>,
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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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