6126356d82
This patch partially implements the parameter passing rules outlined in the ELFv2 ABI within TableGen. Specifically, it implements the parameter assignment of integers, floats, and vectors within registers - where the GPR numbering will be "skipped" depending on the ordering of floats and vectors that appear within a parameter list. As we begin to adopt GlobalISel to the PowerPC backend, there is a need for a TableGen definition that encapsulates the ELFv2 parameter passing rules. Thus, this patch also changes the default calling convention that is returned within the ccAssignFnForCall() function used in our GlobalISel implementation, and also adds some additional testing of the calling convention that is implemented. Future patches that build on top of this initial TableGen definition will aim to add more of the ABI complexities, including support for additional types and also in-memory arguments. Differential Revision: https://reviews.llvm.org/D137504
51 lines
2.1 KiB
C++
51 lines
2.1 KiB
C++
//=== PPCCallingConv.h - PPC Custom Calling Convention Routines -*- C++ -*-===//
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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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//
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// This file contains the custom routines for the PPC Calling Convention that
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// aren't done by tablegen.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_PPC_PPCCALLINGCONV_H
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#define LLVM_LIB_TARGET_PPC_PPCCALLINGCONV_H
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#include "llvm/CodeGen/CallingConvLower.h"
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#include "llvm/IR/CallingConv.h"
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namespace llvm {
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bool RetCC_PPC(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool RetCC_PPC64_ELF_FIS(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool RetCC_PPC_Cold(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool CC_PPC32_SVR4(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool CC_PPC64_ELF(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool CC_PPC64_ELF_FIS(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool CC_PPC32_SVR4_ByVal(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags,
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CCState &State);
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bool CC_PPC32_SVR4_VarArg(unsigned ValNo, MVT ValVT, MVT LocVT,
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CCValAssign::LocInfo LocInfo,
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ISD::ArgFlagsTy ArgFlags, CCState &State);
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} // End llvm namespace
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#endif
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