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https://github.com/RPCS3/llvm-mirror.git
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37389b484a
Implement LowerFORMAL_ARGUMENTS_SVR4(). Implement LowerCALL_SVR4(). Add support for split arguments. Implement by value parameter passing for aggregates. Add support for variable argument lists. Create the spill area for argument registers of variable argument functions no longer at a fixed offset. Make sure callee saved registers are spilled to the correct stack offsets. Change allocation order of non-volatile floating-point registers. Add VRSAVE to the list of callee-saved registers, add CallConvLowering for vararg calls. Add support for variable argument calls with Vector arguments. Add support for VR and VRSAVE save area, improve allocation order for non-volatile vector registers. Stop creating illegal i8 values in LowerVASTART(). Add memory access width hints. Make sure to reserve space on the stack for the frame pointer. When using the SVR4 ABI, reserve r13 for the Small Data Area pointer. Assure that the frame pointer is spilled to the correct location on the stack. Some FP registers were not marked as volatile. Make sure the i64 words from a long double are passed either both in registers or both on the stack. Only put integer arguments in registers which are not marked with the inreg flag. llvm-svn: 74765
119 lines
4.2 KiB
TableGen
119 lines
4.2 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 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 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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/// CCCustom - Calls a custom arg handling function.
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class CCCustom<string fn> : CCAction {
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string FuncName = fn;
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}
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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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/// CCIfByVal - If the current argument has ByVal parameter attribute, apply
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/// Action A.
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class CCIfByVal<CCAction A> : CCIf<"ArgFlags.isByVal()", 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.isInReg()", A> {}
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/// CCIfNest - If this argument is marked with the 'nest' attribute, apply
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/// the specified action.
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class CCIfNest<CCAction A> : CCIf<"ArgFlags.isNest()", A> {}
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/// CCIfSplit - If this argument is marked with the 'split' attribute, apply
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/// the specified action.
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class CCIfSplit<CCAction A> : CCIf<"ArgFlags.isSplit()", 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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/// CCAssignToRegWithShadow - Same as CCAssignToReg, but with list of registers
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/// which became shadowed, when some register is used.
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class CCAssignToRegWithShadow<list<Register> regList,
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list<Register> shadowList> : CCAction {
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list<Register> RegList = regList;
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list<Register> ShadowRegList = shadowList;
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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. If size is
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/// zero then the ABI size is used; if align is zero then the ABI alignment
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/// is used - these may depend on the target or subtarget.
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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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/// CCPassByVal - This action always matches: it assigns the value to a stack
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/// slot to implement ByVal aggregate parameter passing. Size and alignment
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/// specify the minimum size and alignment for the stack slot.
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class CCPassByVal<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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/// 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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/// CCBitConvertToType - If applied, this bitconverts the specified current
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/// value to the specified type.
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class CCBitConvertToType<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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