Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / platform / external / llvm / 4f735ca1855bb66974f3b1c4ee493534d5037eda / . / lib / Target / ARM / ARMISelLowering.h
blob: 402e1c6c5da4ae0e9a1fa2aaa37ff028711afb47 [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 Cheng53519f02011-01-21 18:55:51 +0000[diff] [blame]37 WrapperDYN, // WrapperDYN - A wrapper node for TargetGlobalAddress in
38 // DYN mode.
Evan Cheng5de5d4b2011-01-17 08:03:18 +0000[diff] [blame]39 WrapperPIC, // WrapperPIC - A wrapper node for TargetGlobalAddress in
40 // PIC mode.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]41 WrapperJT, // WrapperJT - A wrapper node for TargetJumpTable
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]42
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]43 CALL, // Function call.
Evan Cheng277f0742007-06-19 21:05:09 +0000[diff] [blame]44 CALL_PRED, // Function call that's predicable.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]45 CALL_NOLINK, // Function call with branch not branch-and-link.
46 tCALL, // Thumb function call.
47 BRCOND, // Conditional branch.
48 BR_JT, // Jumptable branch.
Evan Cheng5657c012009-07-29 02:18:14 +0000[diff] [blame]49 BR2_JT, // Jumptable branch (2 level - jumptable entry is a jump).
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]50 RET_FLAG, // Return with a flag operand.
51
52 PIC_ADD, // Add with a PC operand and a PIC label.
53
54 CMP, // ARM compare instructions.
David Goodwinc0309b42009-06-29 15:33:01 +0000[diff] [blame]55 CMPZ, // ARM compare that sets only Z flag.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]56 CMPFP, // ARM VFP compare instruction, sets FPSCR.
57 CMPFPw0, // ARM VFP compare against zero instruction, sets FPSCR.
58 FMSTAT, // ARM fmstat instruction.
59 CMOV, // ARM conditional move instructions.
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]60
Evan Cheng218977b2010-07-13 19:27:42 +0000[diff] [blame]61 BCC_i64,
62
Jim Grosbach3482c802010-01-18 19:58:49 +0000[diff] [blame]63 RBIT, // ARM bitreverse instruction
64
Bob Wilson76a312b2010-03-19 22:51:32 +0000[diff] [blame]65 FTOSI, // FP to sint within a FP register.
66 FTOUI, // FP to uint within a FP register.
67 SITOF, // sint to FP within a FP register.
68 UITOF, // uint to FP within a FP register.
69
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]70 SRL_FLAG, // V,Flag = srl_flag X -> srl X, 1 + save carry out.
71 SRA_FLAG, // V,Flag = sra_flag X -> sra X, 1 + save carry out.
72 RRX, // V = RRX X, Flag -> srl X, 1 + shift in carry flag.
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]73
Jim Grosbache5165492009-11-09 00:11:35 +0000[diff] [blame]74 VMOVRRD, // double to two gprs.
75 VMOVDRR, // Two gprs to double.
Lauro Ramos Venancio64f4fa52007-04-27 13:54:47 +0000[diff] [blame]76
Jim Grosbache4ad3872010-10-19 23:27:08 +0000[diff] [blame]77 EH_SJLJ_SETJMP, // SjLj exception handling setjmp.
78 EH_SJLJ_LONGJMP, // SjLj exception handling longjmp.
79 EH_SJLJ_DISPATCHSETUP, // SjLj exception handling dispatch setup.
Jim Grosbach0e0da732009-05-12 23:59:14 +0000[diff] [blame]80
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]81 TC_RETURN, // Tail call return pseudo.
82
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]83 THREAD_POINTER,
84
Evan Cheng86198642009-08-07 00:34:42 +0000[diff] [blame]85 DYN_ALLOC, // Dynamic allocation on the stack.
86
Bob Wilsonf74a4292010-10-30 00:54:37 +0000[diff] [blame]87 MEMBARRIER, // Memory barrier (DMB)
88 MEMBARRIER_MCR, // Memory barrier (MCR)
Evan Chengdfed19f2010-11-03 06:34:55 +0000[diff] [blame]89
90 PRELOAD, // Preload
Nate Begemand1fb5832010-08-03 21:31:55 +0000[diff] [blame]91
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]92 VCEQ, // Vector compare equal.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]93 VCEQZ, // Vector compare equal to zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]94 VCGE, // Vector compare greater than or equal.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]95 VCGEZ, // Vector compare greater than or equal to zero.
96 VCLEZ, // Vector compare less than or equal to zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]97 VCGEU, // Vector compare unsigned greater than or equal.
98 VCGT, // Vector compare greater than.
Owen Andersonc24cb352010-11-08 23:21:22 +0000[diff] [blame]99 VCGTZ, // Vector compare greater than zero.
100 VCLTZ, // Vector compare less than zero.
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]101 VCGTU, // Vector compare unsigned greater than.
102 VTST, // Vector test bits.
103
104 // Vector shift by immediate:
105 VSHL, // ...left
106 VSHRs, // ...right (signed)
107 VSHRu, // ...right (unsigned)
108 VSHLLs, // ...left long (signed)
109 VSHLLu, // ...left long (unsigned)
110 VSHLLi, // ...left long (with maximum shift count)
111 VSHRN, // ...right narrow
112
113 // Vector rounding shift by immediate:
114 VRSHRs, // ...right (signed)
115 VRSHRu, // ...right (unsigned)
116 VRSHRN, // ...right narrow
117
118 // Vector saturating shift by immediate:
119 VQSHLs, // ...left (signed)
120 VQSHLu, // ...left (unsigned)
121 VQSHLsu, // ...left (signed to unsigned)
122 VQSHRNs, // ...right narrow (signed)
123 VQSHRNu, // ...right narrow (unsigned)
124 VQSHRNsu, // ...right narrow (signed to unsigned)
125
126 // Vector saturating rounding shift by immediate:
127 VQRSHRNs, // ...right narrow (signed)
128 VQRSHRNu, // ...right narrow (unsigned)
129 VQRSHRNsu, // ...right narrow (signed to unsigned)
130
131 // Vector shift and insert:
132 VSLI, // ...left
133 VSRI, // ...right
134
135 // Vector get lane (VMOV scalar to ARM core register)
136 // (These are used for 8- and 16-bit element types only.)
137 VGETLANEu, // zero-extend vector extract element
138 VGETLANEs, // sign-extend vector extract element
139
Bob Wilson7e3f0d22010-07-14 06:31:50 +0000[diff] [blame]140 // Vector move immediate and move negated immediate:
Bob Wilsoncba270d2010-07-13 21:16:48 +0000[diff] [blame]141 VMOVIMM,
Bob Wilson7e3f0d22010-07-14 06:31:50 +0000[diff] [blame]142 VMVNIMM,
143
144 // Vector duplicate:
Bob Wilsonc1d287b2009-08-14 05:13:08 +0000[diff] [blame]145 VDUP,
Bob Wilson0ce37102009-08-14 05:08:32 +0000[diff] [blame]146 VDUPLANE,
Bob Wilsona599bff2009-08-04 00:36:16 +0000[diff] [blame]147
Bob Wilsond8e17572009-08-12 22:31:50 +0000[diff] [blame]148 // Vector shuffles:
Bob Wilsonde95c1b82009-08-19 17:03:43 +0000[diff] [blame]149 VEXT, // extract
Bob Wilsond8e17572009-08-12 22:31:50 +0000[diff] [blame]150 VREV64, // reverse elements within 64-bit doublewords
151 VREV32, // reverse elements within 32-bit words
Anton Korobeynikov1c8e5812009-08-21 12:41:24 +0000[diff] [blame]152 VREV16, // reverse elements within 16-bit halfwords
Bob Wilsonc692cb72009-08-21 20:54:19 +0000[diff] [blame]153 VZIP, // zip (interleave)
154 VUZP, // unzip (deinterleave)
Bob Wilson9f6c4c12010-02-18 06:05:53 +0000[diff] [blame]155 VTRN, // transpose
Bill Wendling69a05a72011-03-14 23:02:38 +0000[diff] [blame]156 VTBL1, // 1-register shuffle with mask
157 VTBL2, // 2-register shuffle with mask
Bob Wilson9f6c4c12010-02-18 06:05:53 +0000[diff] [blame]158
Bob Wilsond0b69cf2010-09-01 23:50:19 +0000[diff] [blame]159 // Vector multiply long:
160 VMULLs, // ...signed
161 VMULLu, // ...unsigned
162
Bob Wilson40cbe7d2010-06-04 00:04:02 +0000[diff] [blame]163 // Operands of the standard BUILD_VECTOR node are not legalized, which
164 // is fine if BUILD_VECTORs are always lowered to shuffles or other
165 // operations, but for ARM some BUILD_VECTORs are legal as-is and their
166 // operands need to be legalized. Define an ARM-specific version of
167 // BUILD_VECTOR for this purpose.
168 BUILD_VECTOR,
169
Bob Wilson9f6c4c12010-02-18 06:05:53 +0000[diff] [blame]170 // Floating-point max and min:
171 FMAX,
Jim Grosbach469bbdb2010-07-16 23:05:05 +0000[diff] [blame]172 FMIN,
173
174 // Bit-field insert
Owen Andersond9668172010-11-03 22:44:51 +0000[diff] [blame]175 BFI,
176
177 // Vector OR with immediate
Owen Anderson080c0922010-11-05 19:27:46 +0000[diff] [blame]178 VORRIMM,
179 // Vector AND with NOT of immediate
Bob Wilsonb1dfa7a2010-11-28 06:51:26 +0000[diff] [blame]180 VBICIMM,
181
182 // Vector load N-element structure to all lanes:
183 VLD2DUP = ISD::FIRST_TARGET_MEMORY_OPCODE,
184 VLD3DUP,
Bob Wilson1c3ef902011-02-07 17:43:21 +0000[diff] [blame]185 VLD4DUP,
186
187 // NEON loads with post-increment base updates:
188 VLD1_UPD,
189 VLD2_UPD,
190 VLD3_UPD,
191 VLD4_UPD,
192 VLD2LN_UPD,
193 VLD3LN_UPD,
194 VLD4LN_UPD,
195 VLD2DUP_UPD,
196 VLD3DUP_UPD,
197 VLD4DUP_UPD,
198
199 // NEON stores with post-increment base updates:
200 VST1_UPD,
201 VST2_UPD,
202 VST3_UPD,
203 VST4_UPD,
204 VST2LN_UPD,
205 VST3LN_UPD,
206 VST4LN_UPD
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]207 };
208 }
209
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]210 /// Define some predicates that are used for node matching.
211 namespace ARM {
Evan Cheng39382422009-10-28 01:44:26 +0000[diff] [blame]212 /// getVFPf32Imm / getVFPf64Imm - If the given fp immediate can be
213 /// materialized with a VMOV.f32 / VMOV.f64 (i.e. fconsts / fconstd)
214 /// instruction, returns its 8-bit integer representation. Otherwise,
215 /// returns -1.
216 int getVFPf32Imm(const APFloat &FPImm);
217 int getVFPf64Imm(const APFloat &FPImm);
Jim Grosbach469bbdb2010-07-16 23:05:05 +0000[diff] [blame]218 bool isBitFieldInvertedMask(unsigned v);
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]219 }
220
Bob Wilson261f2a22009-05-20 16:30:25 +0000[diff] [blame]221 //===--------------------------------------------------------------------===//
Dale Johannesen80dae192007-03-20 00:30:56 +0000[diff] [blame]222 // ARMTargetLowering - ARM Implementation of the TargetLowering interface
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]223
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]224 class ARMTargetLowering : public TargetLowering {
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]225 public:
Dan Gohman61e729e2007-08-02 21:21:54 +0000[diff] [blame]226 explicit ARMTargetLowering(TargetMachine &TM);
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]227
Jim Grosbache1102ca2010-07-19 17:20:38 +0000[diff] [blame]228 virtual unsigned getJumpTableEncoding(void) const;
229
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]230 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
Duncan Sands1607f052008-12-01 11:39:25 +0000[diff] [blame]231
232 /// ReplaceNodeResults - Replace the results of node with an illegal result
233 /// type with new values built out of custom code.
234 ///
235 virtual void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]236 SelectionDAG &DAG) const;
Duncan Sands1607f052008-12-01 11:39:25 +0000[diff] [blame]237
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]238 virtual const char *getTargetNodeName(unsigned Opcode) const;
239
Dan Gohmanaf1d8ca2010-05-01 00:01:06 +0000[diff] [blame]240 virtual MachineBasicBlock *
241 EmitInstrWithCustomInserter(MachineInstr *MI,
242 MachineBasicBlock *MBB) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]243
Evan Cheng31959b12011-02-02 01:06:55 +0000[diff] [blame]244 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
245
246 bool isDesirableToTransformToIntegerOp(unsigned Opc, EVT VT) const;
247
Bill Wendlingaf566342009-08-15 21:21:19 +0000[diff] [blame]248 /// allowsUnalignedMemoryAccesses - Returns true if the target allows
249 /// unaligned memory accesses. of the specified type.
250 /// FIXME: Add getOptimalMemOpType to implement memcpy with NEON?
251 virtual bool allowsUnalignedMemoryAccesses(EVT VT) const;
252
Chris Lattnerc9addb72007-03-30 23:15:24 +0000[diff] [blame]253 /// isLegalAddressingMode - Return true if the addressing mode represented
254 /// by AM is legal for this target, for a load/store of the specified type.
255 virtual bool isLegalAddressingMode(const AddrMode &AM, const Type *Ty)const;
Evan Chenge6c835f2009-08-14 20:09:37 +0000[diff] [blame]256 bool isLegalT2ScaledAddressingMode(const AddrMode &AM, EVT VT) const;
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]257
Evan Cheng77e47512009-11-11 19:05:52 +0000[diff] [blame]258 /// isLegalICmpImmediate - Return true if the specified immediate is legal
Jim Grosbach18f30e62010-06-02 21:53:11 +0000[diff] [blame]259 /// icmp immediate, that is the target has icmp instructions which can
260 /// compare a register against the immediate without having to materialize
261 /// the immediate into a register.
Evan Cheng06b53c02009-11-12 07:13:11 +0000[diff] [blame]262 virtual bool isLegalICmpImmediate(int64_t Imm) const;
Evan Cheng77e47512009-11-11 19:05:52 +0000[diff] [blame]263
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]264 /// getPreIndexedAddressParts - returns true by value, base pointer and
265 /// offset pointer and addressing mode by reference if the node's address
266 /// can be legally represented as pre-indexed load / store address.
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]267 virtual bool getPreIndexedAddressParts(SDNode *N, SDValue &Base,
268 SDValue &Offset,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]269 ISD::MemIndexedMode &AM,
Dan Gohman73e09142009-01-15 16:29:45 +0000[diff] [blame]270 SelectionDAG &DAG) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]271
272 /// getPostIndexedAddressParts - returns true by value, base pointer and
273 /// offset pointer and addressing mode by reference if this node can be
274 /// combined with a load / store to form a post-indexed load / store.
275 virtual bool getPostIndexedAddressParts(SDNode *N, SDNode *Op,
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]276 SDValue &Base, SDValue &Offset,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]277 ISD::MemIndexedMode &AM,
Dan Gohman73e09142009-01-15 16:29:45 +0000[diff] [blame]278 SelectionDAG &DAG) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]279
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]280 virtual void computeMaskedBitsForTargetNode(const SDValue Op,
Dan Gohman977a76f2008-02-13 22:28:48 +0000[diff] [blame]281 const APInt &Mask,
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]282 APInt &KnownZero,
Dan Gohmanfd29e0e2008-02-13 00:35:47 +0000[diff] [blame]283 APInt &KnownOne,
Dan Gohmanea859be2007-06-22 14:59:07 +0000[diff] [blame]284 const SelectionDAG &DAG,
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]285 unsigned Depth) const;
Bill Wendlingaf566342009-08-15 21:21:19 +0000[diff] [blame]286
287
Evan Cheng55d42002011-01-08 01:24:27 +0000[diff] [blame]288 virtual bool ExpandInlineAsm(CallInst *CI) const;
289
Chris Lattner4234f572007-03-25 02:14:49 +0000[diff] [blame]290 ConstraintType getConstraintType(const std::string &Constraint) const;
John Thompson44ab89e2010-10-29 17:29:13 +0000[diff] [blame]291
292 /// Examine constraint string and operand type and determine a weight value.
293 /// The operand object must already have been set up with the operand type.
294 ConstraintWeight getSingleConstraintMatchWeight(
295 AsmOperandInfo &info, const char *constraint) const;
296
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]297 std::pair<unsigned, const TargetRegisterClass*>
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]298 getRegForInlineAsmConstraint(const std::string &Constraint,
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]299 EVT VT) const;
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]300 std::vector<unsigned>
301 getRegClassForInlineAsmConstraint(const std::string &Constraint,
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]302 EVT VT) const;
Rafael Espindolaf1ba1ca2007-11-05 23:12:20 +0000[diff] [blame]303
Bob Wilsonbf6396b2009-04-01 17:58:54 +0000[diff] [blame]304 /// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
305 /// vector. If it is invalid, don't add anything to Ops. If hasMemory is
306 /// true it means one of the asm constraint of the inline asm instruction
307 /// being processed is 'm'.
308 virtual void LowerAsmOperandForConstraint(SDValue Op,
309 char ConstraintLetter,
Bob Wilsonbf6396b2009-04-01 17:58:54 +0000[diff] [blame]310 std::vector<SDValue> &Ops,
311 SelectionDAG &DAG) const;
Jim Grosbach6aa71972009-05-13 22:32:43 +0000[diff] [blame]312
Dan Gohman419e4f92010-05-11 16:21:03 +0000[diff] [blame]313 const ARMSubtarget* getSubtarget() const {
Dan Gohman707e0182008-04-12 04:36:06 +0000[diff] [blame]314 return Subtarget;
Rafael Espindolaf1ba1ca2007-11-05 23:12:20 +0000[diff] [blame]315 }
316
Evan Cheng06b666c2010-05-15 02:18:07 +0000[diff] [blame]317 /// getRegClassFor - Return the register class that should be used for the
318 /// specified value type.
319 virtual TargetRegisterClass *getRegClassFor(EVT VT) const;
320
Bill Wendlingb4202b82009-07-01 18:50:55 +0000[diff] [blame]321 /// getFunctionAlignment - Return the Log2 alignment of this function.
Bill Wendling20c568f2009-06-30 22:38:32 +0000[diff] [blame]322 virtual unsigned getFunctionAlignment(const Function *F) const;
323
Anton Korobeynikovcec36f42010-07-24 21:52:08 +0000[diff] [blame]324 /// getMaximalGlobalOffset - Returns the maximal possible offset which can
325 /// be used for loads / stores from the global.
326 virtual unsigned getMaximalGlobalOffset() const;
327
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]328 /// createFastISel - This method returns a target specific FastISel object,
329 /// or null if the target does not support "fast" ISel.
330 virtual FastISel *createFastISel(FunctionLoweringInfo &funcInfo) const;
331
Evan Cheng1cc39842010-05-20 23:26:43 +0000[diff] [blame]332 Sched::Preference getSchedulingPreference(SDNode *N) const;
333
Anton Korobeynikovd0ac2342009-08-21 12:40:07 +0000[diff] [blame]334 bool isShuffleMaskLegal(const SmallVectorImpl<int> &M, EVT VT) const;
Anton Korobeynikov48e19352009-09-23 19:04:09 +0000[diff] [blame]335 bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const;
Evan Cheng39382422009-10-28 01:44:26 +0000[diff] [blame]336
337 /// isFPImmLegal - Returns true if the target can instruction select the
338 /// specified FP immediate natively. If false, the legalizer will
339 /// materialize the FP immediate as a load from a constant pool.
340 virtual bool isFPImmLegal(const APFloat &Imm, EVT VT) const;
341
Bob Wilson65ffec42010-09-21 17:56:22 +0000[diff] [blame]342 virtual bool getTgtMemIntrinsic(IntrinsicInfo &Info,
343 const CallInst &I,
344 unsigned Intrinsic) const;
Evan Chengd70f57b2010-07-19 22:15:08 +0000[diff] [blame]345 protected:
Evan Cheng4f6b4672010-07-21 06:09:07 +0000[diff] [blame]346 std::pair<const TargetRegisterClass*, uint8_t>
347 findRepresentativeClass(EVT VT) const;
Evan Chengd70f57b2010-07-19 22:15:08 +0000[diff] [blame]348
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]349 private:
350 /// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
351 /// make the right decision when generating code for different targets.
352 const ARMSubtarget *Subtarget;
353
Evan Cheng31446872010-07-23 22:39:59 +0000[diff] [blame]354 const TargetRegisterInfo *RegInfo;
355
Evan Cheng3ef1c872010-09-10 01:29:16 +0000[diff] [blame]356 const InstrItineraryData *Itins;
357
Bob Wilsond2559bf2009-07-13 18:11:36 +0000[diff] [blame]358 /// ARMPCLabelIndex - Keep track of the number of ARM PC labels created.
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]359 ///
360 unsigned ARMPCLabelIndex;
361
Owen Andersone50ed302009-08-10 22:56:29 +0000[diff] [blame]362 void addTypeForNEON(EVT VT, EVT PromotedLdStVT, EVT PromotedBitwiseVT);
363 void addDRTypeForNEON(EVT VT);
364 void addQRTypeForNEON(EVT VT);
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]365
366 typedef SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPassVector;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]367 void PassF64ArgInRegs(DebugLoc dl, SelectionDAG &DAG,
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]368 SDValue Chain, SDValue &Arg,
369 RegsToPassVector &RegsToPass,
370 CCValAssign &VA, CCValAssign &NextVA,
371 SDValue &StackPtr,
372 SmallVector<SDValue, 8> &MemOpChains,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]373 ISD::ArgFlagsTy Flags) const;
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]374 SDValue GetF64FormalArgument(CCValAssign &VA, CCValAssign &NextVA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]375 SDValue &Root, SelectionDAG &DAG,
376 DebugLoc dl) const;
Bob Wilson5bafff32009-06-22 23:27:02 +0000[diff] [blame]377
Jim Grosbach18f30e62010-06-02 21:53:11 +0000[diff] [blame]378 CCAssignFn *CCAssignFnForNode(CallingConv::ID CC, bool Return,
379 bool isVarArg) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]380 SDValue LowerMemOpCallTo(SDValue Chain, SDValue StackPtr, SDValue Arg,
381 DebugLoc dl, SelectionDAG &DAG,
382 const CCValAssign &VA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]383 ISD::ArgFlagsTy Flags) const;
Jim Grosbach23ff7cf2010-05-26 20:22:18 +0000[diff] [blame]384 SDValue LowerEH_SJLJ_SETJMP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbach5eb19512010-05-22 01:06:18 +0000[diff] [blame]385 SDValue LowerEH_SJLJ_LONGJMP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbache4ad3872010-10-19 23:27:08 +0000[diff] [blame]386 SDValue LowerEH_SJLJ_DISPATCHSETUP(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbacha87ded22010-02-08 23:22:00 +0000[diff] [blame]387 SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]388 const ARMSubtarget *Subtarget) const;
389 SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
390 SDValue LowerGlobalAddressDarwin(SDValue Op, SelectionDAG &DAG) const;
391 SDValue LowerGlobalAddressELF(SDValue Op, SelectionDAG &DAG) const;
392 SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]393 SDValue LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]394 SelectionDAG &DAG) const;
Dan Gohman475871a2008-07-27 21:46:04 +0000[diff] [blame]395 SDValue LowerToTLSExecModels(GlobalAddressSDNode *GA,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]396 SelectionDAG &DAG) const;
397 SDValue LowerGLOBAL_OFFSET_TABLE(SDValue Op, SelectionDAG &DAG) const;
398 SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
Bill Wendlingde2b1512010-08-11 08:43:16 +0000[diff] [blame]399 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]400 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
401 SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
Evan Cheng515fe3a2010-07-08 02:08:50 +0000[diff] [blame]402 SDValue LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const;
Evan Cheng2457f2c2010-05-22 01:47:14 +0000[diff] [blame]403 SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]404 SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]405 SDValue LowerShiftRightParts(SDValue Op, SelectionDAG &DAG) const;
406 SDValue LowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const;
Nate Begemand1fb5832010-08-03 21:31:55 +0000[diff] [blame]407 SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const;
Bob Wilson11a1dff2011-01-07 21:37:30 +0000[diff] [blame]408 SDValue LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG,
409 const ARMSubtarget *ST) const;
410
411 SDValue ReconstructShuffle(SDValue Op, SelectionDAG &DAG) const;
Rafael Espindola7b73a5d2007-10-19 14:35:17 +0000[diff] [blame]412
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]413 SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]414 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]415 const SmallVectorImpl<ISD::InputArg> &Ins,
416 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]417 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]418
419 virtual SDValue
420 LowerFormalArguments(SDValue Chain,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]421 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]422 const SmallVectorImpl<ISD::InputArg> &Ins,
423 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]424 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]425
426 virtual SDValue
Evan Cheng022d9e12010-02-02 23:55:14 +0000[diff] [blame]427 LowerCall(SDValue Chain, SDValue Callee,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]428 CallingConv::ID CallConv, bool isVarArg,
Evan Cheng0c439eb2010-01-27 00:07:07 +0000[diff] [blame]429 bool &isTailCall,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]430 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]431 const SmallVectorImpl<SDValue> &OutVals,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]432 const SmallVectorImpl<ISD::InputArg> &Ins,
433 DebugLoc dl, SelectionDAG &DAG,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]434 SmallVectorImpl<SDValue> &InVals) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]435
Stuart Hastingsf222e592011-02-28 17:17:53 +0000[diff] [blame]436 /// HandleByVal - Target-specific cleanup for ByVal support.
437 virtual void HandleByVal(CCState *) const;
438
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]439 /// IsEligibleForTailCallOptimization - Check whether the call is eligible
440 /// for tail call optimization. Targets which want to do tail call
441 /// optimization should implement this function.
442 bool IsEligibleForTailCallOptimization(SDValue Callee,
443 CallingConv::ID CalleeCC,
444 bool isVarArg,
445 bool isCalleeStructRet,
446 bool isCallerStructRet,
447 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]448 const SmallVectorImpl<SDValue> &OutVals,
Dale Johannesen51e28e62010-06-03 21:09:53 +0000[diff] [blame]449 const SmallVectorImpl<ISD::InputArg> &Ins,
450 SelectionDAG& DAG) const;
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]451 virtual SDValue
452 LowerReturn(SDValue Chain,
Sandeep Patel65c3c8f2009-09-02 08:44:58 +0000[diff] [blame]453 CallingConv::ID CallConv, bool isVarArg,
Dan Gohman98ca4f22009-08-05 01:29:28 +0000[diff] [blame]454 const SmallVectorImpl<ISD::OutputArg> &Outs,
Dan Gohmanc9403652010-07-07 15:54:55 +0000[diff] [blame]455 const SmallVectorImpl<SDValue> &OutVals,
Dan Gohmand858e902010-04-17 15:26:15 +0000[diff] [blame]456 DebugLoc dl, SelectionDAG &DAG) const;
Evan Cheng06b53c02009-11-12 07:13:11 +0000[diff] [blame]457
Evan Cheng3d2125c2010-11-30 23:55:39 +0000[diff] [blame]458 virtual bool isUsedByReturnOnly(SDNode *N) const;
459
Evan Cheng06b53c02009-11-12 07:13:11 +0000[diff] [blame]460 SDValue getARMCmp(SDValue LHS, SDValue RHS, ISD::CondCode CC,
Evan Cheng218977b2010-07-13 19:27:42 +0000[diff] [blame]461 SDValue &ARMcc, SelectionDAG &DAG, DebugLoc dl) const;
462 SDValue getVFPCmp(SDValue LHS, SDValue RHS,
463 SelectionDAG &DAG, DebugLoc dl) const;
Bob Wilson79f56c92011-03-08 01:17:20 +0000[diff] [blame]464 SDValue duplicateCmp(SDValue Cmp, SelectionDAG &DAG) const;
Evan Cheng218977b2010-07-13 19:27:42 +0000[diff] [blame]465
466 SDValue OptimizeVFPBrcond(SDValue Op, SelectionDAG &DAG) const;
Jim Grosbach5278eb82009-12-11 01:42:04 +0000[diff] [blame]467
Jim Grosbache801dc42009-12-12 01:40:06 +0000[diff] [blame]468 MachineBasicBlock *EmitAtomicCmpSwap(MachineInstr *MI,
469 MachineBasicBlock *BB,
470 unsigned Size) const;
471 MachineBasicBlock *EmitAtomicBinary(MachineInstr *MI,
472 MachineBasicBlock *BB,
473 unsigned Size,
474 unsigned BinOpcode) const;
Jim Grosbach5278eb82009-12-11 01:42:04 +0000[diff] [blame]475
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]476 };
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]477
Owen Anderson36fa3ea2010-11-05 21:57:54 +0000[diff] [blame]478 enum NEONModImmType {
479 VMOVModImm,
480 VMVNModImm,
481 OtherModImm
482 };
483
484
Eric Christopherab695882010-07-21 22:26:11 +0000[diff] [blame]485 namespace ARM {
486 FastISel *createFastISel(FunctionLoweringInfo &funcInfo);
487 }
Evan Chenga8e29892007-01-19 07:51:42 +0000[diff] [blame]488}
489
490#endif // ARMISELLOWERING_H