forked from OSchip/llvm-project
89 lines
3.1 KiB
TableGen
89 lines
3.1 KiB
TableGen
//===- TargetCallingConv.td - Target Calling Conventions ---*- tablegen -*-===//
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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 Chris Lattner and is distributed under
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// the University of Illinois Open Source 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 the target-independent interfaces with which targets
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// describe their calling conventions.
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//
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//===----------------------------------------------------------------------===//
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class CCAction;
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class CallingConv;
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/// CCPredicateAction - Instances of this class check some predicate, then
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/// delegate to another action if the predicate is true.
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class CCPredicateAction<CCAction A> : CCAction {
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CCAction SubAction = A;
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}
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/// CCIfType - If the current argument is one of the specified types, apply
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/// Action A.
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class CCIfType<list<ValueType> vts, CCAction A> : CCPredicateAction<A> {
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list<ValueType> VTs = vts;
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}
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/// CCIf - If the predicate matches, apply A.
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class CCIf<string predicate, CCAction A> : CCPredicateAction<A> {
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string Predicate = predicate;
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}
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/// CCIfStruct - If the current argument is a struct, apply
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/// Action A.
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class CCIfStruct<CCAction A> : CCIf<"ArgFlags & ISD::ParamFlags::ByVal", A> {
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}
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/// CCIfCC - Match of the current calling convention is 'CC'.
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class CCIfCC<string CC, CCAction A>
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: CCIf<!strconcat("State.getCallingConv() == ", CC), A> {}
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/// CCIfInReg - If this argument is marked with the 'inreg' attribute, apply
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/// the specified action.
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class CCIfInReg<CCAction A> : CCIf<"ArgFlags & ISD::ParamFlags::InReg", A> {}
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/// CCIfNotVarArg - If the current function is not vararg - apply the action
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class CCIfNotVarArg<CCAction A> : CCIf<"!State.isVarArg()", A> {}
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/// CCAssignToReg - This action matches if there is a register in the specified
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/// list that is still available. If so, it assigns the value to the first
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/// available register and succeeds.
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class CCAssignToReg<list<Register> regList> : CCAction {
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list<Register> RegList = regList;
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}
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/// CCAssignToStack - This action always matches: it assigns the value to a
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/// stack slot of the specified size and alignment on the stack.
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class CCAssignToStack<int size, int align> : CCAction {
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int Size = size;
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int Align = align;
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}
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/// CCStructAssign - This action always matches: it will use the C ABI and
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/// the register availability to decided whether to assign to a set of
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/// registers or to a stack slot.
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class CCStructAssign<list<Register> regList> : CCAction {
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list<Register> RegList = regList;
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}
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/// CCPromoteToType - If applied, this promotes the specified current value to
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/// the specified type.
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class CCPromoteToType<ValueType destTy> : CCAction {
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ValueType DestTy = destTy;
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}
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/// CCDelegateTo - This action invokes the specified sub-calling-convention. It
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/// is successful if the specified CC matches.
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class CCDelegateTo<CallingConv cc> : CCAction {
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CallingConv CC = cc;
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}
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/// CallingConv - An instance of this is used to define each calling convention
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/// that the target supports.
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class CallingConv<list<CCAction> actions> {
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list<CCAction> Actions = actions;
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}
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