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gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / b1dfa7a8e0c1972231bee636afd5239b009ba4da / . / lib / Target / ARM / ARMISelLowering.h
blob: 38f7399110429836816608b0e68a03977f1d9f1d [file] [log] [blame]
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]1//===-- ARMISelLowering.h - ARM DAG Lowering Interface ----------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner4ee451d2007-12-29 20:36:04 +0000[diff] [blame]5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines the interfaces that ARM uses to lower LLVM code into a
11// selection DAG.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef ARMISELLOWERING_H
16#define ARMISELLOWERING_H
17
Rafael Espindolaf1ba1ca2007-11-05 23:12:20 +0000[diff] [blame]18#include "ARMSubtarget.h"
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]19#include "llvm/Target/TargetLowering.h"
Evan Cheng31446872010-07-23 22:39:59 +0000[diff] [blame]20#include "llvm/Target/TargetRegisterInfo.h"
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]21#include "llvm/CodeGen/FastISel.h"
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]22#include "llvm/CodeGen/SelectionDAG.h"
Bob Wilson1f595bb2009-04-17 19:07:39 +0000[diff] [blame]23#include "llvm/CodeGen/CallingConvLower.h"
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]24#include <vector>
25
26namespace llvm {
27 class ARMConstantPoolValue;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]28
29 namespace ARMISD {
30 // ARM Specific DAG Nodes
31 enum NodeType {
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]32 // Start the numbering where the builtin ops and target ops leave off.
Dan Gohman0ba2bcf2008-09-23 18:42:32 +0000[diff] [blame]33 FIRST_NUMBER = ISD::BUILTIN_OP_END,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]34
35 Wrapper, // Wrapper - A wrapper node for TargetConstantPool,
36 // TargetExternalSymbol, and TargetGlobalAddress.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]37 WrapperJT, // WrapperJT - A wrapper node for TargetJumpTable
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]38
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]39 CALL, // Function call.
Evan Cheng277f0742007-06-19 21:05:09 +0000[diff] [blame]40 CALL_PRED, // Function call that's predicable.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]41 CALL_NOLINK, // Function call with branch not branch-and-link.
42 tCALL, // Thumb function call.
43 BRCOND, // Conditional branch.
44 BR_JT, // Jumptable branch.
Evan Cheng5657c012009-07-29 02:18:14 +0000[diff] [blame]45 BR2_JT, // Jumptable branch (2 level - jumptable entry is a jump).
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]46 RET_FLAG, // Return with a flag operand.
47
48 PIC_ADD, // Add with a PC operand and a PIC label.
49
50 CMP, // ARM compare instructions.
David Goodwinc0309b42009-06-29 15:33:01 +0000[diff] [blame]51 CMPZ, // ARM compare that sets only Z flag.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]52 CMPFP, // ARM VFP compare instruction, sets FPSCR.
53 CMPFPw0, // ARM VFP compare against zero instruction, sets FPSCR.
54 FMSTAT, // ARM fmstat instruction.
55 CMOV, // ARM conditional move instructions.
56 CNEG, // ARM conditional negate instructions.
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]57
Evan Cheng218977b2010-07-13 19:27:42 +0000[diff] [blame]58 BCC_i64,
59
Jim Grosbach3482c802010-01-18 19:58:49 +0000[diff] [blame]60 RBIT, // ARM bitreverse instruction
61
Bob Wilson76a312b2010-03-19 22:51:32 +0000[diff] [blame]62 FTOSI, // FP to sint within a FP register.
63 FTOUI, // FP to uint within a FP register.
64 SITOF, // sint to FP within a FP register.
65 UITOF, // uint to FP within a FP register.
66
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]67 SRL_FLAG, // V,Flag = srl_flag X -> srl X, 1 + save carry out.
68 SRA_FLAG, // V,Flag = sra_flag X -> sra X, 1 + save carry out.
69 RRX, // V = RRX X, Flag -> srl X, 1 + shift in carry flag.
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]70
Jim Grosbache5165492009-11-09 00:11:35 +0000[diff] [blame]71 VMOVRRD, // double to two gprs.
72 VMOVDRR, // Two gprs to double.
Lauro Ramos Venancio64f4fa52007-04-27 13:54:47 +0000[diff] [blame]73
Jim Grosbache4ad3872010-10-19 23:27:08 +0000[diff] [blame]74 EH_SJLJ_SETJMP, // SjLj exception handling setjmp.
75 EH_SJLJ_LONGJMP, // SjLj exception handling longjmp.
76 EH_SJLJ_DISPATCHSETUP, // SjLj exception handling dispatch setup.
Jim Grosbach0e0da732009-05-12 23:59:14 +0000[diff] [blame]77
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]78 TC_RETURN, // Tail call return pseudo.
79
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]80 THREAD_POINTER,
81
Evan Cheng86198642009-08-07 00:34:42 +0000[diff] [blame]82 DYN_ALLOC, // Dynamic allocation on the stack.
83
Bob Wilsonf74a4292010-10-30 00:54:37 +0000[diff] [blame]84 MEMBARRIER, // Memory barrier (DMB)
85 MEMBARRIER_MCR, // Memory barrier (MCR)
Evan Chengdfed19f2010-11-03 06:34:55 +0000[diff] [blame]86
87 PRELOAD, // Preload
Nate Begemand1fb5832010-08-03 21:31:55 +0000[diff] [blame]88
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]89 VCEQ, // Vector compare equal.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]90 VCEQZ, // Vector compare equal to zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]91 VCGE, // Vector compare greater than or equal.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]92 VCGEZ, // Vector compare greater than or equal to zero.
93 VCLEZ, // Vector compare less than or equal to zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]94 VCGEU, // Vector compare unsigned greater than or equal.
95 VCGT, // Vector compare greater than.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]96 VCGTZ, // Vector compare greater than zero.
97 VCLTZ, // Vector compare less than zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]98 VCGTU, // Vector compare unsigned greater than.
99 VTST, // Vector test bits.
100
101 // Vector shift by immediate:
102 VSHL, // ...left
103 VSHRs, // ...right (signed)
104 VSHRu, // ...right (unsigned)
105 VSHLLs, // ...left long (signed)
106 VSHLLu, // ...left long (unsigned)
107 VSHLLi, // ...left long (with maximum shift count)
108 VSHRN, // ...right narrow
109
110 // Vector rounding shift by immediate:
111 VRSHRs, // ...right (signed)
112 VRSHRu, // ...right (unsigned)
113 VRSHRN, // ...right narrow
114
115 // Vector saturating shift by immediate:
116 VQSHLs, // ...left (signed)
117 VQSHLu, // ...left (unsigned)
118 VQSHLsu, // ...left (signed to unsigned)
119 VQSHRNs, // ...right narrow (signed)
120 VQSHRNu, // ...right narrow (unsigned)
121 VQSHRNsu, // ...right narrow (signed to unsigned)
122
123 // Vector saturating rounding shift by immediate:
124 VQRSHRNs, // ...right narrow (signed)
125 VQRSHRNu, // ...right narrow (unsigned)
126 VQRSHRNsu, // ...right narrow (signed to unsigned)
127
128 // Vector shift and insert:
129 VSLI, // ...left
130 VSRI, // ...right
131
132 // Vector get lane (VMOV scalar to ARM core register)
133 // (These are used for 8- and 16-bit element types only.)
134 VGETLANEu, // zero-extend vector extract element
135 VGETLANEs, // sign-extend vector extract element
136
Bob Wilson7e3f0d22010-07-14 06:31:50 +0000[diff] [blame]137 // Vector move immediate and move negated immediate:
Bob Wilsoncba270d2010-07-13 21:16:48 +0000[diff] [blame]138 VMOVIMM,
Bob Wilson7e3f0d22010-07-14 06:31:50 +0000[diff] [blame]139 VMVNIMM,
140
141 // Vector duplicate:
Bob Wilsonc1d287b2009-08-14 05:13:08 +0000[diff] [blame]142 VDUP,
Bob Wilson0ce37102009-08-14 05:08:32 +0000[diff] [blame]143 VDUPLANE,
Bob Wilsona599bff2009-08-04 00:36:16 +0000[diff] [blame]144
Bob Wilsond8e17572009-08-12 22:31:50 +0000[diff] [blame]145 // Vector shuffles:
Bob Wilsonde95c1b82009-08-19 17:03:43 +0000[diff] [blame]146 VEXT, // extract
Bob Wilsond8e17572009-08-12 22:31:50 +0000[diff] [blame]147 VREV64, // reverse elements within 64-bit doublewords
148 VREV32, // reverse elements within 32-bit words
Anton Korobeynikov1c8e5812009-08-21 12:41:24 +0000[diff] [blame]149 VREV16, // reverse elements within 16-bit halfwords
Bob Wilsonc692cb72009-08-21 20:54:19 +0000[diff] [blame]150 VZIP, // zip (interleave)
151 VUZP, // unzip (deinterleave)
Bob Wilson9f6c4c12010-02-18 06:05:53 +0000[diff] [blame]152 VTRN, // transpose
153
Bob Wilsond0b69cf2010-09-01 23:50:19 +0000[diff] [blame]154 // Vector multiply long:
155 VMULLs, // ...signed
156 VMULLu, // ...unsigned
157
Bob Wilson40cbe7d2010-06-04 00:04:02 +0000[diff] [blame]158 // Operands of the standard BUILD_VECTOR node are not legalized, which
159 // is fine if BUILD_VECTORs are always lowered to shuffles or other
160 // operations, but for ARM some BUILD_VECTORs are legal as-is and their
161 // operands need to be legalized. Define an ARM-specific version of
162 // BUILD_VECTOR for this purpose.
163 BUILD_VECTOR,
164
Bob Wilson9f6c4c12010-02-18 06:05:53 +0000[diff] [blame]165 // Floating-point max and min:
166 FMAX,
Jim Grosbach469bbdb2010-07-16 23:05:05 +0000[diff] [blame]167 FMIN,
168
169 // Bit-field insert
Owen Andersond9668172010-11-03 22:44:51 +0000[diff] [blame]170 BFI,
171
172 // Vector OR with immediate
Owen Anderson080c0922010-11-05 19:27:46 +0000[diff] [blame]173 VORRIMM,
174 // Vector AND with NOT of immediate
Bob Wilsonb1dfa7a2010-11-28 06:51:26 +0000[diff] [blame^]175 VBICIMM,
176
177 // Vector load N-element structure to all lanes:
178 VLD2DUP = ISD::FIRST_TARGET_MEMORY_OPCODE,
179 VLD3DUP,
180 VLD4DUP
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]181 };
182 }
183
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]184 /// Define some predicates that are used for node matching.
185 namespace ARM {
Evan Cheng39382422009-10-28 01:44:26 +0000[diff] [blame]186 /// getVFPf32Imm / getVFPf64Imm - If the given fp immediate can be
187 /// materialized with a VMOV.f32 / VMOV.f64 (i.e. fconsts / fconstd)
188 /// instruction, returns its 8-bit integer representation. Otherwise,
189 /// returns -1.
190 int getVFPf32Imm(const APFloat &FPImm);
191 int getVFPf64Imm(const APFloat &FPImm);
Jim Grosbach469bbdb2010-07-16 23:05:05 +0000[diff] [blame]192 bool isBitFieldInvertedMask(unsigned v);
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]193 }
194
Bob Wilson261f2a22009-05-20 16:30:25 +0000[diff] [blame]195 //===--------------------------------------------------------------------===//
Dale Johannesen80dae192007-03-20 00:30:56 +0000[diff] [blame]196 // ARMTargetLowering - ARM Implementation of the TargetLowering interface
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]197
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]198 class ARMTargetLowering : public TargetLowering {
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]199 public:
Dan Gohman61e729e2007-08-02 21:21:54 +0000[diff] [blame]200 explicit ARMTargetLowering(TargetMachine &TM);
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]201
Jim Grosbache1102ca2010-07-19 17:20:38 +0000[diff] [blame]202 virtual unsigned getJumpTableEncoding(void) const;
203
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]204 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
Duncan Sands1607f052008-12-01 11:39:25 +0000[diff] [blame]205
206 /// ReplaceNodeResults - Replace the results of node with an illegal result
207 /// type with new values built out of custom code.
208 ///
209 virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]210 SelectionDAG &DAG) const;
Duncan Sands1607f052008-12-01 11:39:25 +0000[diff] [blame]211
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]212 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]213
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]214 virtual const char *getTargetNodeName(unsigned Opcode) const;
215
Dan Gohmanaf1d8ca2010-05-01 00:01:06 +0000[diff] [blame]216 virtual MachineBasicBlock *
217 EmitInstrWithCustomInserter(MachineInstr *MI,
218 MachineBasicBlock *MBB) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]219
Bill Wendlingaf566342009-08-15 21:21:19 +0000[diff] [blame]220 /// allowsUnalignedMemoryAccesses - Returns true if the target allows
221 /// unaligned memory accesses. of the specified type.
222 /// FIXME: Add getOptimalMemOpType to implement memcpy with NEON?
223 virtual bool allowsUnalignedMemoryAccesses(EVT VT) const;
224
Chris Lattnerc9addb72007-03-30 23:15:24 +0000[diff] [blame]225 /// isLegalAddressingMode - Return true if the addressing mode represented
226 /// by AM is legal for this target, for a load/store of the specified type.
227 virtual bool isLegalAddressingMode(const AddrMode &AM, const Type *Ty)const;
Evan Chenge6c835f2009-08-14 20:09:37 +0000[diff] [blame]228 bool isLegalT2ScaledAddressingMode(const AddrMode &AM, EVT VT) const;
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]229
Evan Cheng77e47512009-11-11 19:05:52 +0000[diff] [blame]230 /// isLegalICmpImmediate - Return true if the specified immediate is legal
Jim Grosbach18f30e62010-06-02 21:53:11 +0000[diff] [blame]231 /// icmp immediate, that is the target has icmp instructions which can
232 /// compare a register against the immediate without having to materialize
233 /// the immediate into a register.
Evan Cheng06b53c02009-11-12 07:13:11 +0000[diff] [blame]234 virtual bool isLegalICmpImmediate(int64_t Imm) const;
Evan Cheng77e47512009-11-11 19:05:52 +0000[diff] [blame]235
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]236 /// getPreIndexedAddressParts - returns true by value, base pointer and
237 /// offset pointer and addressing mode by reference if the node's address
238 /// can be legally represented as pre-indexed load / store address.
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]239 virtual bool getPreIndexedAddressParts(SDNode *N, SDValue &Base,
240 SDValue &Offset,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]241 ISD::MemIndexedMode &AM,
Dan Gohman73e09142009-01-15 16:29:45 +0000[diff] [blame]242 SelectionDAG &DAG) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]243
244 /// getPostIndexedAddressParts - returns true by value, base pointer and
245 /// offset pointer and addressing mode by reference if this node can be
246 /// combined with a load / store to form a post-indexed load / store.
247 virtual bool getPostIndexedAddressParts(SDNode *N, SDNode *Op,
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]248 SDValue &Base, SDValue &Offset,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]249 ISD::MemIndexedMode &AM,
Dan Gohman73e09142009-01-15 16:29:45 +0000[diff] [blame]250 SelectionDAG &DAG) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]251
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]252 virtual void computeMaskedBitsForTargetNode(const SDValue Op,
Dan Gohman977a76f2008-02-13 22:28:48 +0000[diff] [blame]253 const APInt &Mask,
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]254 APInt &KnownZero,
Dan Gohmanfd29e0e2008-02-13 00:35:47 +0000[diff] [blame]255 APInt &KnownOne,
Dan Gohmanea859be2007-06-22 14:59:07 +0000[diff] [blame]256 const SelectionDAG &DAG,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]257 unsigned Depth) const;
Bill Wendlingaf566342009-08-15 21:21:19 +0000[diff] [blame]258
259
Chris Lattner4234f572007-03-25 02:14:49 +0000[diff] [blame]260 ConstraintType getConstraintType(const std::string &Constraint) const;
John Thompson44ab89e2010-10-29 17:29:13 +0000[diff] [blame]261
262 /// Examine constraint string and operand type and determine a weight value.
263 /// The operand object must already have been set up with the operand type.
264 ConstraintWeight getSingleConstraintMatchWeight(
265 AsmOperandInfo &info, const char *constraint) const;
266
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]267 std::pair<unsigned, const TargetRegisterClass*>
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]268 getRegForInlineAsmConstraint(const std::string &Constraint,
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]269 EVT VT) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]270 std::vector<unsigned>
271 getRegClassForInlineAsmConstraint(const std::string &Constraint,
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]272 EVT VT) const;
Rafael Espindolaf1ba1ca2007-11-05 23:12:20 +0000[diff] [blame]273
Bob Wilsonbf6396b2009-04-01 17:58:54 +0000[diff] [blame]274 /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
275 /// vector. If it is invalid, don't add anything to Ops. If hasMemory is
276 /// true it means one of the asm constraint of the inline asm instruction
277 /// being processed is 'm'.
278 virtual void LowerAsmOperandForConstraint(SDValue Op,
279 char ConstraintLetter,
Bob Wilsonbf6396b2009-04-01 17:58:54 +0000[diff] [blame]280 std::vector<SDValue> &Ops,
281 SelectionDAG &DAG) const;
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]282
Dan Gohman419e4f92010-05-11 16:21:03 +0000[diff] [blame]283 const ARMSubtarget* getSubtarget() const {
Dan Gohman707e0182008-04-12 04:36:06 +0000[diff] [blame]284 return Subtarget;
Rafael Espindolaf1ba1ca2007-11-05 23:12:20 +0000[diff] [blame]285 }
286
Evan Cheng06b666c2010-05-15 02:18:07 +0000[diff] [blame]287 /// getRegClassFor - Return the register class that should be used for the
288 /// specified value type.
289 virtual TargetRegisterClass *getRegClassFor(EVT VT) const;
290
Bill Wendlingb4202b82009-07-01 18:50:55 +0000[diff] [blame]291 /// getFunctionAlignment - Return the Log2 alignment of this function.
Bill Wendling20c568f2009-06-30 22:38:32 +0000[diff] [blame]292 virtual unsigned getFunctionAlignment(const Function *F) const;
293
Anton Korobeynikovcec36f42010-07-24 21:52:08 +0000[diff] [blame]294 /// getMaximalGlobalOffset - Returns the maximal possible offset which can
295 /// be used for loads / stores from the global.
296 virtual unsigned getMaximalGlobalOffset() const;
297
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]298 /// createFastISel - This method returns a target specific FastISel object,
299 /// or null if the target does not support "fast" ISel.
300 virtual FastISel *createFastISel(FunctionLoweringInfo &funcInfo) const;
301
Evan Cheng1cc39842010-05-20 23:26:43 +0000[diff] [blame]302 Sched::Preference getSchedulingPreference(SDNode *N) const;
303
Evan Cheng31446872010-07-23 22:39:59 +0000[diff] [blame]304 unsigned getRegPressureLimit(const TargetRegisterClass *RC,
305 MachineFunction &MF) const;
306
Anton Korobeynikovd0ac2342009-08-21 12:40:07 +0000[diff] [blame]307 bool isShuffleMaskLegal(const SmallVectorImpl<int> &M, EVT VT) const;
Anton Korobeynikov48e19352009-09-23 19:04:09 +0000[diff] [blame]308 bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
Evan Cheng39382422009-10-28 01:44:26 +0000[diff] [blame]309
310 /// isFPImmLegal - Returns true if the target can instruction select the
311 /// specified FP immediate natively. If false, the legalizer will
312 /// materialize the FP immediate as a load from a constant pool.
313 virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const;
314
Bob Wilson65ffec42010-09-21 17:56:22 +0000[diff] [blame]315 virtual bool getTgtMemIntrinsic(IntrinsicInfo &Info,
316 const CallInst &I,
317 unsigned Intrinsic) const;
Evan Chengd70f57b2010-07-19 22:15:08 +0000[diff] [blame]318 protected:
Evan Cheng4f6b4672010-07-21 06:09:07 +0000[diff] [blame]319 std::pair<const TargetRegisterClass*, uint8_t>
320 findRepresentativeClass(EVT VT) const;
Evan Chengd70f57b2010-07-19 22:15:08 +0000[diff] [blame]321
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]322 private:
323 /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
324 /// make the right decision when generating code for different targets.
325 const ARMSubtarget *Subtarget;
326
Evan Cheng31446872010-07-23 22:39:59 +0000[diff] [blame]327 const TargetRegisterInfo *RegInfo;
328
Evan Cheng3ef1c872010-09-10 01:29:16 +0000[diff] [blame]329 const InstrItineraryData *Itins;
330
Bob Wilsond2559bf2009-07-13 18:11:36 +0000[diff] [blame]331 /// ARMPCLabelIndex - Keep track of the number of ARM PC labels created.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]332 ///
333 unsigned ARMPCLabelIndex;
334
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]335 void addTypeForNEON(EVT VT, EVT PromotedLdStVT, EVT PromotedBitwiseVT);
336 void addDRTypeForNEON(EVT VT);
337 void addQRTypeForNEON(EVT VT);
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]338
339 typedef SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPassVector;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]340 void PassF64ArgInRegs(DebugLoc dl, SelectionDAG &DAG,
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]341 SDValue Chain, SDValue &Arg,
342 RegsToPassVector &RegsToPass,
343 CCValAssign &VA, CCValAssign &NextVA,
344 SDValue &StackPtr,
345 SmallVector<SDValue, 8> &MemOpChains,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]346 ISD::ArgFlagsTy Flags) const;
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]347 SDValue GetF64FormalArgument(CCValAssign &VA, CCValAssign &NextVA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]348 SDValue &Root, SelectionDAG &DAG,
349 DebugLoc dl) const;
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]350
Jim Grosbach18f30e62010-06-02 21:53:11 +0000[diff] [blame]351 CCAssignFn *CCAssignFnForNode(CallingConv::ID CC, bool Return,
352 bool isVarArg) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]353 SDValue LowerMemOpCallTo(SDValue Chain, SDValue StackPtr, SDValue Arg,
354 DebugLoc dl, SelectionDAG &DAG,
355 const CCValAssign &VA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]356 ISD::ArgFlagsTy Flags) const;
Jim Grosbach23ff7cf2010-05-26 20:22:18 +0000[diff] [blame]357 SDValue LowerEH_SJLJ_SETJMP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbach5eb19512010-05-22 01:06:18 +0000[diff] [blame]358 SDValue LowerEH_SJLJ_LONGJMP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbache4ad3872010-10-19 23:27:08 +0000[diff] [blame]359 SDValue LowerEH_SJLJ_DISPATCHSETUP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbacha87ded22010-02-08 23:22:00 +0000[diff] [blame]360 SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]361 const ARMSubtarget *Subtarget) const;
362 SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
363 SDValue LowerGlobalAddressDarwin(SDValue Op, SelectionDAG &DAG) const;
364 SDValue LowerGlobalAddressELF(SDValue Op, SelectionDAG &DAG) const;
365 SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]366 SDValue LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]367 SelectionDAG &DAG) const;
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]368 SDValue LowerToTLSExecModels(GlobalAddressSDNode *GA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]369 SelectionDAG &DAG) const;
370 SDValue LowerGLOBAL_OFFSET_TABLE(SDValue Op, SelectionDAG &DAG) const;
371 SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
Bill Wendlingde2b1512010-08-11 08:43:16 +0000[diff] [blame]372 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]373 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
374 SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
Evan Cheng515fe3a2010-07-08 02:08:50 +0000[diff] [blame]375 SDValue LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const;
Evan Cheng2457f2c2010-05-22 01:47:14 +0000[diff] [blame]376 SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]377 SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]378 SDValue LowerShiftRightParts(SDValue Op, SelectionDAG &DAG) const;
379 SDValue LowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const;
Nate Begemand1fb5832010-08-03 21:31:55 +0000[diff] [blame]380 SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const;
Rafael Espindola7b73a5d2007-10-19 14:35:17 +0000[diff] [blame]381
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]382 SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]383 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]384 const SmallVectorImpl<ISD::InputArg> &Ins,
385 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]386 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]387
388 virtual SDValue
389 LowerFormalArguments(SDValue Chain,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]390 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]391 const SmallVectorImpl<ISD::InputArg> &Ins,
392 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]393 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]394
395 virtual SDValue
Evan Cheng022d9e12010-02-02 23:55:14 +0000[diff] [blame]396 LowerCall(SDValue Chain, SDValue Callee,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]397 CallingConv::ID CallConv, bool isVarArg,
Evan Cheng0c439eb2010-01-27 00:07:07 +0000[diff] [blame]398 bool &isTailCall,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]399 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]400 const SmallVectorImpl<SDValue> &OutVals,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]401 const SmallVectorImpl<ISD::InputArg> &Ins,
402 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]403 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]404
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]405 /// IsEligibleForTailCallOptimization - Check whether the call is eligible
406 /// for tail call optimization. Targets which want to do tail call
407 /// optimization should implement this function.
408 bool IsEligibleForTailCallOptimization(SDValue Callee,
409 CallingConv::ID CalleeCC,
410 bool isVarArg,
411 bool isCalleeStructRet,
412 bool isCallerStructRet,
413 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]414 const SmallVectorImpl<SDValue> &OutVals,
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]415 const SmallVectorImpl<ISD::InputArg> &Ins,
416 SelectionDAG& DAG) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]417 virtual SDValue
418 LowerReturn(SDValue Chain,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]419 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]420 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]421 const SmallVectorImpl<SDValue> &OutVals,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]422 DebugLoc dl, SelectionDAG &DAG) const;
Evan Cheng06b53c02009-11-12 07:13:11 +0000[diff] [blame]423
424 SDValue getARMCmp(SDValue LHS, SDValue RHS, ISD::CondCode CC,
Evan Cheng218977b2010-07-13 19:27:42 +0000[diff] [blame]425 SDValue &ARMcc, SelectionDAG &DAG, DebugLoc dl) const;
426 SDValue getVFPCmp(SDValue LHS, SDValue RHS,
427 SelectionDAG &DAG, DebugLoc dl) const;
428
429 SDValue OptimizeVFPBrcond(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbach5278eb82009-12-11 01:42:04 +0000[diff] [blame]430
Jim Grosbache801dc42009-12-12 01:40:06 +0000[diff] [blame]431 MachineBasicBlock *EmitAtomicCmpSwap(MachineInstr *MI,
432 MachineBasicBlock *BB,
433 unsigned Size) const;
434 MachineBasicBlock *EmitAtomicBinary(MachineInstr *MI,
435 MachineBasicBlock *BB,
436 unsigned Size,
437 unsigned BinOpcode) const;
Jim Grosbach5278eb82009-12-11 01:42:04 +0000[diff] [blame]438
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]439 };
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]440
Owen Anderson36fa3ea2010-11-05 21:57:54 +0000[diff] [blame]441 enum NEONModImmType {
442 VMOVModImm,
443 VMVNModImm,
444 OtherModImm
445 };
446
447
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]448 namespace ARM {
449 FastISel *createFastISel(FunctionLoweringInfo &funcInfo);
450 }
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]451}
452
453#endif // ARMISELLOWERING_H