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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143722 91177308-0d34-0410-b5e6-96231b3b80d8
146 lines
4.8 KiB
C++
146 lines
4.8 KiB
C++
//===-- llvm/Target/TargetCallingConv.h - Calling Convention ----*- C++ -*-===//
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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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//
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// This file defines types for working with calling-convention information.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_TARGETCALLINGCONV_H
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#define LLVM_TARGET_TARGETCALLINGCONV_H
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#include "llvm/CodeGen/ValueTypes.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/MathExtras.h"
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#include <string>
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namespace llvm {
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namespace ISD {
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struct ArgFlagsTy {
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private:
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static const uint64_t NoFlagSet = 0ULL;
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static const uint64_t ZExt = 1ULL<<0; ///< Zero extended
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static const uint64_t ZExtOffs = 0;
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static const uint64_t SExt = 1ULL<<1; ///< Sign extended
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static const uint64_t SExtOffs = 1;
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static const uint64_t InReg = 1ULL<<2; ///< Passed in register
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static const uint64_t InRegOffs = 2;
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static const uint64_t SRet = 1ULL<<3; ///< Hidden struct-ret ptr
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static const uint64_t SRetOffs = 3;
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static const uint64_t ByVal = 1ULL<<4; ///< Struct passed by value
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static const uint64_t ByValOffs = 4;
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static const uint64_t Nest = 1ULL<<5; ///< Nested fn static chain
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static const uint64_t NestOffs = 5;
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static const uint64_t ByValAlign = 0xFULL << 6; //< Struct alignment
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static const uint64_t ByValAlignOffs = 6;
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static const uint64_t Split = 1ULL << 10;
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static const uint64_t SplitOffs = 10;
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static const uint64_t OrigAlign = 0x1FULL<<27;
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static const uint64_t OrigAlignOffs = 27;
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static const uint64_t ByValSize = 0xffffffffULL << 32; //< Struct size
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static const uint64_t ByValSizeOffs = 32;
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static const uint64_t One = 1ULL; //< 1 of this type, for shifts
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uint64_t Flags;
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public:
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ArgFlagsTy() : Flags(0) { }
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bool isZExt() const { return Flags & ZExt; }
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void setZExt() { Flags |= One << ZExtOffs; }
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bool isSExt() const { return Flags & SExt; }
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void setSExt() { Flags |= One << SExtOffs; }
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bool isInReg() const { return Flags & InReg; }
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void setInReg() { Flags |= One << InRegOffs; }
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bool isSRet() const { return Flags & SRet; }
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void setSRet() { Flags |= One << SRetOffs; }
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bool isByVal() const { return Flags & ByVal; }
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void setByVal() { Flags |= One << ByValOffs; }
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bool isNest() const { return Flags & Nest; }
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void setNest() { Flags |= One << NestOffs; }
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unsigned getByValAlign() const {
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return (unsigned)
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((One << ((Flags & ByValAlign) >> ByValAlignOffs)) / 2);
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}
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void setByValAlign(unsigned A) {
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Flags = (Flags & ~ByValAlign) |
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(uint64_t(Log2_32(A) + 1) << ByValAlignOffs);
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}
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bool isSplit() const { return Flags & Split; }
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void setSplit() { Flags |= One << SplitOffs; }
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unsigned getOrigAlign() const {
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return (unsigned)
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((One << ((Flags & OrigAlign) >> OrigAlignOffs)) / 2);
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}
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void setOrigAlign(unsigned A) {
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Flags = (Flags & ~OrigAlign) |
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(uint64_t(Log2_32(A) + 1) << OrigAlignOffs);
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}
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unsigned getByValSize() const {
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return (unsigned)((Flags & ByValSize) >> ByValSizeOffs);
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}
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void setByValSize(unsigned S) {
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Flags = (Flags & ~ByValSize) | (uint64_t(S) << ByValSizeOffs);
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}
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/// getArgFlagsString - Returns the flags as a string, eg: "zext align:4".
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std::string getArgFlagsString();
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/// getRawBits - Represent the flags as a bunch of bits.
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uint64_t getRawBits() const { return Flags; }
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};
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/// InputArg - This struct carries flags and type information about a
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/// single incoming (formal) argument or incoming (from the perspective
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/// of the caller) return value virtual register.
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///
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struct InputArg {
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ArgFlagsTy Flags;
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MVT VT;
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bool Used;
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InputArg() : VT(MVT::Other), Used(false) {}
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InputArg(ArgFlagsTy flags, EVT vt, bool used)
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: Flags(flags), Used(used) {
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VT = vt.getSimpleVT();
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}
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};
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/// OutputArg - This struct carries flags and a value for a
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/// single outgoing (actual) argument or outgoing (from the perspective
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/// of the caller) return value virtual register.
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///
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struct OutputArg {
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ArgFlagsTy Flags;
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MVT VT;
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/// IsFixed - Is this a "fixed" value, ie not passed through a vararg "...".
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bool IsFixed;
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OutputArg() : IsFixed(false) {}
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OutputArg(ArgFlagsTy flags, EVT vt, bool isfixed)
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: Flags(flags), IsFixed(isfixed) {
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VT = vt.getSimpleVT();
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}
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};
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}
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} // end llvm namespace
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#endif
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