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authorStephen Hines <srhines@google.com>2015-04-01 18:49:24 +0000
committerGerrit Code Review <noreply-gerritcodereview@google.com>2015-04-01 18:49:26 +0000
commit3fa16bd6062e23bcdb82ed4dd965674792e6b761 (patch)
tree9348fc507292f7e8715d22d64ce5a32131b4f875 /lib/Target/Hexagon/HexagonCallingConvLower.h
parentbeed47390a60f6f0c77532b3d3f76bb47ef49423 (diff)
parentebe69fe11e48d322045d5949c83283927a0d790b (diff)
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Merge "Update aosp/master LLVM for rebase to r230699."
Diffstat (limited to 'lib/Target/Hexagon/HexagonCallingConvLower.h')
-rw-r--r--lib/Target/Hexagon/HexagonCallingConvLower.h187
1 files changed, 0 insertions, 187 deletions
diff --git a/lib/Target/Hexagon/HexagonCallingConvLower.h b/lib/Target/Hexagon/HexagonCallingConvLower.h
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index 738ed1a..0000000
--- a/lib/Target/Hexagon/HexagonCallingConvLower.h
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@@ -1,187 +0,0 @@
-//===-- HexagonCallingConvLower.h - Calling Conventions ---------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file declares the Hexagon_CCState class, used for lowering
-// and implementing calling conventions. Adapted from the target independent
-// version but this handles calls to varargs functions
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONCALLINGCONVLOWER_H
-#define LLVM_LIB_TARGET_HEXAGON_HEXAGONCALLINGCONVLOWER_H
-
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/CallingConvLower.h"
-#include "llvm/CodeGen/SelectionDAGNodes.h"
-
-//
-// Need to handle varargs.
-//
-namespace llvm {
- class TargetRegisterInfo;
- class TargetMachine;
- class Hexagon_CCState;
- class SDNode;
- struct EVT;
-
-/// Hexagon_CCAssignFn - This function assigns a location for Val, updating
-/// State to reflect the change.
-typedef bool Hexagon_CCAssignFn(unsigned ValNo, EVT ValVT,
- EVT LocVT, CCValAssign::LocInfo LocInfo,
- ISD::ArgFlagsTy ArgFlags, Hexagon_CCState &State,
- int NonVarArgsParams,
- int CurrentParam,
- bool ForceMem);
-
-
-/// CCState - This class holds information needed while lowering arguments and
-/// return values. It captures which registers are already assigned and which
-/// stack slots are used. It provides accessors to allocate these values.
-class Hexagon_CCState {
- CallingConv::ID CallingConv;
- bool IsVarArg;
- const TargetMachine &TM;
- SmallVectorImpl<CCValAssign> &Locs;
- LLVMContext &Context;
-
- unsigned StackOffset;
- SmallVector<uint32_t, 16> UsedRegs;
-public:
- Hexagon_CCState(CallingConv::ID CC, bool isVarArg, const TargetMachine &TM,
- SmallVectorImpl<CCValAssign> &locs, LLVMContext &c);
-
- void addLoc(const CCValAssign &V) {
- Locs.push_back(V);
- }
-
- LLVMContext &getContext() const { return Context; }
- const TargetMachine &getTarget() const { return TM; }
- unsigned getCallingConv() const { return CallingConv; }
- bool isVarArg() const { return IsVarArg; }
-
- unsigned getNextStackOffset() const { return StackOffset; }
-
- /// isAllocated - Return true if the specified register (or an alias) is
- /// allocated.
- bool isAllocated(unsigned Reg) const {
- return UsedRegs[Reg/32] & (1 << (Reg&31));
- }
-
- /// AnalyzeFormalArguments - Analyze an ISD::FORMAL_ARGUMENTS node,
- /// incorporating info about the formals into this state.
- void AnalyzeFormalArguments(const SmallVectorImpl<ISD::InputArg> &Ins,
- Hexagon_CCAssignFn Fn, unsigned SretValueInRegs);
-
- /// AnalyzeReturn - Analyze the returned values of an ISD::RET node,
- /// incorporating info about the result values into this state.
- void AnalyzeReturn(const SmallVectorImpl<ISD::OutputArg> &Outs,
- Hexagon_CCAssignFn Fn, unsigned SretValueInRegs);
-
- /// AnalyzeCallOperands - Analyze an ISD::CALL node, incorporating info
- /// about the passed values into this state.
- void AnalyzeCallOperands(const SmallVectorImpl<ISD::OutputArg> &Outs,
- Hexagon_CCAssignFn Fn, int NonVarArgsParams,
- unsigned SretValueSize);
-
- /// AnalyzeCallOperands - Same as above except it takes vectors of types
- /// and argument flags.
- void AnalyzeCallOperands(SmallVectorImpl<EVT> &ArgVTs,
- SmallVectorImpl<ISD::ArgFlagsTy> &Flags,
- Hexagon_CCAssignFn Fn);
-
- /// AnalyzeCallResult - Analyze the return values of an ISD::CALL node,
- /// incorporating info about the passed values into this state.
- void AnalyzeCallResult(const SmallVectorImpl<ISD::InputArg> &Ins,
- Hexagon_CCAssignFn Fn, unsigned SretValueInRegs);
-
- /// AnalyzeCallResult - Same as above except it's specialized for calls which
- /// produce a single value.
- void AnalyzeCallResult(EVT VT, Hexagon_CCAssignFn Fn);
-
- /// getFirstUnallocated - Return the first unallocated register in the set, or
- /// NumRegs if they are all allocated.
- unsigned getFirstUnallocated(const unsigned *Regs, unsigned NumRegs) const {
- for (unsigned i = 0; i != NumRegs; ++i)
- if (!isAllocated(Regs[i]))
- return i;
- return NumRegs;
- }
-
- /// AllocateReg - Attempt to allocate one register. If it is not available,
- /// return zero. Otherwise, return the register, marking it and any aliases
- /// as allocated.
- unsigned AllocateReg(unsigned Reg) {
- if (isAllocated(Reg)) return 0;
- MarkAllocated(Reg);
- return Reg;
- }
-
- /// Version of AllocateReg with extra register to be shadowed.
- unsigned AllocateReg(unsigned Reg, unsigned ShadowReg) {
- if (isAllocated(Reg)) return 0;
- MarkAllocated(Reg);
- MarkAllocated(ShadowReg);
- return Reg;
- }
-
- /// AllocateReg - Attempt to allocate one of the specified registers. If none
- /// are available, return zero. Otherwise, return the first one available,
- /// marking it and any aliases as allocated.
- unsigned AllocateReg(const unsigned *Regs, unsigned NumRegs) {
- unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs);
- if (FirstUnalloc == NumRegs)
- return 0; // Didn't find the reg.
-
- // Mark the register and any aliases as allocated.
- unsigned Reg = Regs[FirstUnalloc];
- MarkAllocated(Reg);
- return Reg;
- }
-
- /// Version of AllocateReg with list of registers to be shadowed.
- unsigned AllocateReg(const unsigned *Regs, const unsigned *ShadowRegs,
- unsigned NumRegs) {
- unsigned FirstUnalloc = getFirstUnallocated(Regs, NumRegs);
- if (FirstUnalloc == NumRegs)
- return 0; // Didn't find the reg.
-
- // Mark the register and any aliases as allocated.
- unsigned Reg = Regs[FirstUnalloc], ShadowReg = ShadowRegs[FirstUnalloc];
- MarkAllocated(Reg);
- MarkAllocated(ShadowReg);
- return Reg;
- }
-
- /// AllocateStack - Allocate a chunk of stack space with the specified size
- /// and alignment.
- unsigned AllocateStack(unsigned Size, unsigned Align) {
- assert(Align && ((Align-1) & Align) == 0); // Align is power of 2.
- StackOffset = ((StackOffset + Align-1) & ~(Align-1));
- unsigned Result = StackOffset;
- StackOffset += Size;
- return Result;
- }
-
- // HandleByVal - Allocate a stack slot large enough to pass an argument by
- // value. The size and alignment information of the argument is encoded in its
- // parameter attribute.
- void HandleByVal(unsigned ValNo, EVT ValVT,
- EVT LocVT, CCValAssign::LocInfo LocInfo,
- int MinSize, int MinAlign, ISD::ArgFlagsTy ArgFlags);
-
-private:
- /// MarkAllocated - Mark a register and all of its aliases as allocated.
- void MarkAllocated(unsigned Reg);
-};
-
-
-
-} // end namespace llvm
-
-#endif