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0a37960d32
as callee save. They can never be generated by the compiler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23551 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.7 KiB
TableGen
104 lines
3.7 KiB
TableGen
//===-- IA64.td - Target definition file for Intel IA64 -------------------===//
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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 Duraid Madina and is distributed under the
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// 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 is a target description file for the Intel IA64 architecture,
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// also known variously as ia64, IA-64, IPF, "the Itanium architecture" etc.
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//
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//===----------------------------------------------------------------------===//
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// Get the target-independent interfaces which we are implementing...
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//
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include "../Target.td"
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//===----------------------------------------------------------------------===//
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// Register File Description
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//===----------------------------------------------------------------------===//
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include "IA64RegisterInfo.td"
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//===----------------------------------------------------------------------===//
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// Instruction Descriptions
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//===----------------------------------------------------------------------===//
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include "IA64InstrInfo.td"
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def IA64InstrInfo : InstrInfo {
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let PHIInst = PHI;
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}
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def IA64 : Target {
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// The following registers are always saved across calls:
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let CalleeSavedRegisters =
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//'preserved' GRs:
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[
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// We never generate references to these regs, so we don't need to declare
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// that they are saved. In fact, we could just remove them entirely.
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//r4, r5, r6, r7,
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//'special' GRs:
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// r1, // global data pointer (GP) - XXX NOT callee saved, we do it ourselves
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// r12, // memory stack pointer (SP)- XXX NOT callee saved, we do it ourselves
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// **** r13 (thread pointer) we do not touch, ever. it's not here. ****//
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//r15, // our frame pointer (FP)
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//'stacked' GRs the RSE takes care of, we don't worry about
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/* We don't want PEI::calculateCallerSavedRegisters to worry about them,
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since the RSE takes care of them (and we determinethe appropriate
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'alloc' instructions and save/restore ar.pfs ourselves, in instruction
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selection)
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**************************************************************************
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* r32, r33, r34, r35,
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* r36, r37, r38, r39, r40, r41, r42, r43, r44, r45, r46, r47,
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* r48, r49, r50, r51, r52, r53, r54, r55, r56, r57, r58, r59,
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* r60, r61, r62, r63, r64, r65, r66, r67, r68, r69, r70, r71,
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* r72, r73, r74, r75, r76, r77, r78, r79, r80, r81, r82, r83,
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* r84, r85, r86, r87, r88, r89, r90, r91, r92, r93, r94, r95,
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* r96, r97, r98, r99, r100, r101, r102, r103, r104, r105, r106, r107,
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* r108, r109, r110, r111, r112, r113, r114, r115, r116, r117, r118, r119,
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* r120, r121, r122, r123, r124, r125, r126, r127,
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**************************************************************************
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*/
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//'preserved' FP regs:
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/* We never generate references to these regs, so we don't need to declare
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* that they are saved. In fact, we could just remove them entirely.
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* F2,F3,F4, F5,
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* F16,F17,F18,F19,F20,F21,F22,F23,
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* F24,F25,F26,F27,F28,F29,F30,F31,
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*/
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//'preserved' predicate regs:
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/* We never generate references to these regs, so we don't need to declare
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that they are saved. In fact, we could just remove them entirely.
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p1, p2, p3, p4, p5,
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p16, p17, p18, p19, p20, p21, p22, p23,
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p24, p25, p26, p27, p28, p29, p30, p31,
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p32, p33, p34, p35, p36, p37, p38, p39,
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p40, p41, p42, p43, p44, p45, p46, p47,
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p48, p49, p50, p51, p52, p53, p54, p55,
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p56, p57, p58, p59, p60, p61, p62, p63
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*/
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];
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// We don't go anywhere near the LP32 variant of IA64 as
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// sometimes seen in (for example) HP-UX
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let PointerType = i64;
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// Our instruction set
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let InstructionSet = IA64InstrInfo;
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}
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