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gerrit-public.fairphone.software / toolchain / llvm-project / 0012756489bd46c1a5c3ff89ce281c14e88bee1f / . / llvm / lib / CodeGen / TargetLoweringBase.cpp
blob: 8cadbb2dcd0476b1ffc2ee6e28f31a038361b6e4 [file] [log] [blame]
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1//===-- TargetLoweringBase.cpp - Implement the TargetLoweringBase class ---===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This implements the TargetLoweringBase class.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Target/TargetLowering.h"
15#include "llvm/ADT/BitVector.h"
16#include "llvm/ADT/STLExtras.h"
Paul Redmondf29ddfe2013-02-15 18:45:18 +0000[diff] [blame]17#include "llvm/ADT/Triple.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]18#include "llvm/CodeGen/Analysis.h"
19#include "llvm/CodeGen/MachineFrameInfo.h"
20#include "llvm/CodeGen/MachineFunction.h"
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]21#include "llvm/CodeGen/MachineInstrBuilder.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]22#include "llvm/CodeGen/MachineJumpTableInfo.h"
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]23#include "llvm/CodeGen/StackMaps.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]24#include "llvm/IR/DataLayout.h"
25#include "llvm/IR/DerivedTypes.h"
26#include "llvm/IR/GlobalVariable.h"
Rafael Espindoladaeafb42014-02-19 17:23:20 +0000[diff] [blame]27#include "llvm/IR/Mangler.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]28#include "llvm/MC/MCAsmInfo.h"
Rafael Espindoladaeafb42014-02-19 17:23:20 +0000[diff] [blame]29#include "llvm/MC/MCContext.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]30#include "llvm/MC/MCExpr.h"
31#include "llvm/Support/CommandLine.h"
32#include "llvm/Support/ErrorHandling.h"
33#include "llvm/Support/MathExtras.h"
34#include "llvm/Target/TargetLoweringObjectFile.h"
35#include "llvm/Target/TargetMachine.h"
36#include "llvm/Target/TargetRegisterInfo.h"
Eric Christopherd9134482014-08-04 21:25:23 +0000[diff] [blame]37#include "llvm/Target/TargetSubtargetInfo.h"
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]38#include <cctype>
39using namespace llvm;
40
Sanjay Patel943829a2015-07-01 18:10:20 +0000[diff] [blame]41static cl::opt<bool> JumpIsExpensiveOverride(
42 "jump-is-expensive", cl::init(false),
43 cl::desc("Do not create extra branches to split comparison logic."),
44 cl::Hidden);
45
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]46/// InitLibcallNames - Set default libcall names.
47///
Eric Christopherd91d6052014-06-02 20:51:49 +0000[diff] [blame]48static void InitLibcallNames(const char **Names, const Triple &TT) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]49 Names[RTLIB::SHL_I16] = "__ashlhi3";
50 Names[RTLIB::SHL_I32] = "__ashlsi3";
51 Names[RTLIB::SHL_I64] = "__ashldi3";
52 Names[RTLIB::SHL_I128] = "__ashlti3";
53 Names[RTLIB::SRL_I16] = "__lshrhi3";
54 Names[RTLIB::SRL_I32] = "__lshrsi3";
55 Names[RTLIB::SRL_I64] = "__lshrdi3";
56 Names[RTLIB::SRL_I128] = "__lshrti3";
57 Names[RTLIB::SRA_I16] = "__ashrhi3";
58 Names[RTLIB::SRA_I32] = "__ashrsi3";
59 Names[RTLIB::SRA_I64] = "__ashrdi3";
60 Names[RTLIB::SRA_I128] = "__ashrti3";
61 Names[RTLIB::MUL_I8] = "__mulqi3";
62 Names[RTLIB::MUL_I16] = "__mulhi3";
63 Names[RTLIB::MUL_I32] = "__mulsi3";
64 Names[RTLIB::MUL_I64] = "__muldi3";
65 Names[RTLIB::MUL_I128] = "__multi3";
66 Names[RTLIB::MULO_I32] = "__mulosi4";
67 Names[RTLIB::MULO_I64] = "__mulodi4";
68 Names[RTLIB::MULO_I128] = "__muloti4";
69 Names[RTLIB::SDIV_I8] = "__divqi3";
70 Names[RTLIB::SDIV_I16] = "__divhi3";
71 Names[RTLIB::SDIV_I32] = "__divsi3";
72 Names[RTLIB::SDIV_I64] = "__divdi3";
73 Names[RTLIB::SDIV_I128] = "__divti3";
74 Names[RTLIB::UDIV_I8] = "__udivqi3";
75 Names[RTLIB::UDIV_I16] = "__udivhi3";
76 Names[RTLIB::UDIV_I32] = "__udivsi3";
77 Names[RTLIB::UDIV_I64] = "__udivdi3";
78 Names[RTLIB::UDIV_I128] = "__udivti3";
79 Names[RTLIB::SREM_I8] = "__modqi3";
80 Names[RTLIB::SREM_I16] = "__modhi3";
81 Names[RTLIB::SREM_I32] = "__modsi3";
82 Names[RTLIB::SREM_I64] = "__moddi3";
83 Names[RTLIB::SREM_I128] = "__modti3";
84 Names[RTLIB::UREM_I8] = "__umodqi3";
85 Names[RTLIB::UREM_I16] = "__umodhi3";
86 Names[RTLIB::UREM_I32] = "__umodsi3";
87 Names[RTLIB::UREM_I64] = "__umoddi3";
88 Names[RTLIB::UREM_I128] = "__umodti3";
89
90 // These are generally not available.
Craig Topperc0196b12014-04-14 00:51:57 +0000[diff] [blame]91 Names[RTLIB::SDIVREM_I8] = nullptr;
92 Names[RTLIB::SDIVREM_I16] = nullptr;
93 Names[RTLIB::SDIVREM_I32] = nullptr;
94 Names[RTLIB::SDIVREM_I64] = nullptr;
95 Names[RTLIB::SDIVREM_I128] = nullptr;
96 Names[RTLIB::UDIVREM_I8] = nullptr;
97 Names[RTLIB::UDIVREM_I16] = nullptr;
98 Names[RTLIB::UDIVREM_I32] = nullptr;
99 Names[RTLIB::UDIVREM_I64] = nullptr;
100 Names[RTLIB::UDIVREM_I128] = nullptr;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]101
102 Names[RTLIB::NEG_I32] = "__negsi2";
103 Names[RTLIB::NEG_I64] = "__negdi2";
104 Names[RTLIB::ADD_F32] = "__addsf3";
105 Names[RTLIB::ADD_F64] = "__adddf3";
106 Names[RTLIB::ADD_F80] = "__addxf3";
107 Names[RTLIB::ADD_F128] = "__addtf3";
108 Names[RTLIB::ADD_PPCF128] = "__gcc_qadd";
109 Names[RTLIB::SUB_F32] = "__subsf3";
110 Names[RTLIB::SUB_F64] = "__subdf3";
111 Names[RTLIB::SUB_F80] = "__subxf3";
112 Names[RTLIB::SUB_F128] = "__subtf3";
113 Names[RTLIB::SUB_PPCF128] = "__gcc_qsub";
114 Names[RTLIB::MUL_F32] = "__mulsf3";
115 Names[RTLIB::MUL_F64] = "__muldf3";
116 Names[RTLIB::MUL_F80] = "__mulxf3";
117 Names[RTLIB::MUL_F128] = "__multf3";
118 Names[RTLIB::MUL_PPCF128] = "__gcc_qmul";
119 Names[RTLIB::DIV_F32] = "__divsf3";
120 Names[RTLIB::DIV_F64] = "__divdf3";
121 Names[RTLIB::DIV_F80] = "__divxf3";
122 Names[RTLIB::DIV_F128] = "__divtf3";
123 Names[RTLIB::DIV_PPCF128] = "__gcc_qdiv";
124 Names[RTLIB::REM_F32] = "fmodf";
125 Names[RTLIB::REM_F64] = "fmod";
126 Names[RTLIB::REM_F80] = "fmodl";
127 Names[RTLIB::REM_F128] = "fmodl";
128 Names[RTLIB::REM_PPCF128] = "fmodl";
129 Names[RTLIB::FMA_F32] = "fmaf";
130 Names[RTLIB::FMA_F64] = "fma";
131 Names[RTLIB::FMA_F80] = "fmal";
132 Names[RTLIB::FMA_F128] = "fmal";
133 Names[RTLIB::FMA_PPCF128] = "fmal";
134 Names[RTLIB::POWI_F32] = "__powisf2";
135 Names[RTLIB::POWI_F64] = "__powidf2";
136 Names[RTLIB::POWI_F80] = "__powixf2";
137 Names[RTLIB::POWI_F128] = "__powitf2";
138 Names[RTLIB::POWI_PPCF128] = "__powitf2";
139 Names[RTLIB::SQRT_F32] = "sqrtf";
140 Names[RTLIB::SQRT_F64] = "sqrt";
141 Names[RTLIB::SQRT_F80] = "sqrtl";
142 Names[RTLIB::SQRT_F128] = "sqrtl";
143 Names[RTLIB::SQRT_PPCF128] = "sqrtl";
144 Names[RTLIB::LOG_F32] = "logf";
145 Names[RTLIB::LOG_F64] = "log";
146 Names[RTLIB::LOG_F80] = "logl";
147 Names[RTLIB::LOG_F128] = "logl";
148 Names[RTLIB::LOG_PPCF128] = "logl";
149 Names[RTLIB::LOG2_F32] = "log2f";
150 Names[RTLIB::LOG2_F64] = "log2";
151 Names[RTLIB::LOG2_F80] = "log2l";
152 Names[RTLIB::LOG2_F128] = "log2l";
153 Names[RTLIB::LOG2_PPCF128] = "log2l";
154 Names[RTLIB::LOG10_F32] = "log10f";
155 Names[RTLIB::LOG10_F64] = "log10";
156 Names[RTLIB::LOG10_F80] = "log10l";
157 Names[RTLIB::LOG10_F128] = "log10l";
158 Names[RTLIB::LOG10_PPCF128] = "log10l";
159 Names[RTLIB::EXP_F32] = "expf";
160 Names[RTLIB::EXP_F64] = "exp";
161 Names[RTLIB::EXP_F80] = "expl";
162 Names[RTLIB::EXP_F128] = "expl";
163 Names[RTLIB::EXP_PPCF128] = "expl";
164 Names[RTLIB::EXP2_F32] = "exp2f";
165 Names[RTLIB::EXP2_F64] = "exp2";
166 Names[RTLIB::EXP2_F80] = "exp2l";
167 Names[RTLIB::EXP2_F128] = "exp2l";
168 Names[RTLIB::EXP2_PPCF128] = "exp2l";
169 Names[RTLIB::SIN_F32] = "sinf";
170 Names[RTLIB::SIN_F64] = "sin";
171 Names[RTLIB::SIN_F80] = "sinl";
172 Names[RTLIB::SIN_F128] = "sinl";
173 Names[RTLIB::SIN_PPCF128] = "sinl";
174 Names[RTLIB::COS_F32] = "cosf";
175 Names[RTLIB::COS_F64] = "cos";
176 Names[RTLIB::COS_F80] = "cosl";
177 Names[RTLIB::COS_F128] = "cosl";
178 Names[RTLIB::COS_PPCF128] = "cosl";
179 Names[RTLIB::POW_F32] = "powf";
180 Names[RTLIB::POW_F64] = "pow";
181 Names[RTLIB::POW_F80] = "powl";
182 Names[RTLIB::POW_F128] = "powl";
183 Names[RTLIB::POW_PPCF128] = "powl";
184 Names[RTLIB::CEIL_F32] = "ceilf";
185 Names[RTLIB::CEIL_F64] = "ceil";
186 Names[RTLIB::CEIL_F80] = "ceill";
187 Names[RTLIB::CEIL_F128] = "ceill";
188 Names[RTLIB::CEIL_PPCF128] = "ceill";
189 Names[RTLIB::TRUNC_F32] = "truncf";
190 Names[RTLIB::TRUNC_F64] = "trunc";
191 Names[RTLIB::TRUNC_F80] = "truncl";
192 Names[RTLIB::TRUNC_F128] = "truncl";
193 Names[RTLIB::TRUNC_PPCF128] = "truncl";
194 Names[RTLIB::RINT_F32] = "rintf";
195 Names[RTLIB::RINT_F64] = "rint";
196 Names[RTLIB::RINT_F80] = "rintl";
197 Names[RTLIB::RINT_F128] = "rintl";
198 Names[RTLIB::RINT_PPCF128] = "rintl";
199 Names[RTLIB::NEARBYINT_F32] = "nearbyintf";
200 Names[RTLIB::NEARBYINT_F64] = "nearbyint";
201 Names[RTLIB::NEARBYINT_F80] = "nearbyintl";
202 Names[RTLIB::NEARBYINT_F128] = "nearbyintl";
203 Names[RTLIB::NEARBYINT_PPCF128] = "nearbyintl";
Hal Finkel171817e2013-08-07 22:49:12 +0000[diff] [blame]204 Names[RTLIB::ROUND_F32] = "roundf";
205 Names[RTLIB::ROUND_F64] = "round";
206 Names[RTLIB::ROUND_F80] = "roundl";
207 Names[RTLIB::ROUND_F128] = "roundl";
208 Names[RTLIB::ROUND_PPCF128] = "roundl";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]209 Names[RTLIB::FLOOR_F32] = "floorf";
210 Names[RTLIB::FLOOR_F64] = "floor";
211 Names[RTLIB::FLOOR_F80] = "floorl";
212 Names[RTLIB::FLOOR_F128] = "floorl";
213 Names[RTLIB::FLOOR_PPCF128] = "floorl";
Matt Arsenault7c936902014-10-21 23:01:01 +0000[diff] [blame]214 Names[RTLIB::FMIN_F32] = "fminf";
215 Names[RTLIB::FMIN_F64] = "fmin";
216 Names[RTLIB::FMIN_F80] = "fminl";
217 Names[RTLIB::FMIN_F128] = "fminl";
218 Names[RTLIB::FMIN_PPCF128] = "fminl";
219 Names[RTLIB::FMAX_F32] = "fmaxf";
220 Names[RTLIB::FMAX_F64] = "fmax";
221 Names[RTLIB::FMAX_F80] = "fmaxl";
222 Names[RTLIB::FMAX_F128] = "fmaxl";
223 Names[RTLIB::FMAX_PPCF128] = "fmaxl";
Tim Northover753eca02014-03-29 09:03:18 +0000[diff] [blame]224 Names[RTLIB::ROUND_F32] = "roundf";
225 Names[RTLIB::ROUND_F64] = "round";
226 Names[RTLIB::ROUND_F80] = "roundl";
227 Names[RTLIB::ROUND_F128] = "roundl";
228 Names[RTLIB::ROUND_PPCF128] = "roundl";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]229 Names[RTLIB::COPYSIGN_F32] = "copysignf";
230 Names[RTLIB::COPYSIGN_F64] = "copysign";
231 Names[RTLIB::COPYSIGN_F80] = "copysignl";
232 Names[RTLIB::COPYSIGN_F128] = "copysignl";
233 Names[RTLIB::COPYSIGN_PPCF128] = "copysignl";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]234 Names[RTLIB::FPEXT_F32_PPCF128] = "__gcc_stoq";
235 Names[RTLIB::FPEXT_F64_PPCF128] = "__gcc_dtoq";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]236 Names[RTLIB::FPEXT_F64_F128] = "__extenddftf2";
237 Names[RTLIB::FPEXT_F32_F128] = "__extendsftf2";
238 Names[RTLIB::FPEXT_F32_F64] = "__extendsfdf2";
239 Names[RTLIB::FPEXT_F16_F32] = "__gnu_h2f_ieee";
240 Names[RTLIB::FPROUND_F32_F16] = "__gnu_f2h_ieee";
Tim Northover84ce0a62014-07-17 11:12:12 +0000[diff] [blame]241 Names[RTLIB::FPROUND_F64_F16] = "__truncdfhf2";
242 Names[RTLIB::FPROUND_F80_F16] = "__truncxfhf2";
243 Names[RTLIB::FPROUND_F128_F16] = "__trunctfhf2";
244 Names[RTLIB::FPROUND_PPCF128_F16] = "__trunctfhf2";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]245 Names[RTLIB::FPROUND_F64_F32] = "__truncdfsf2";
246 Names[RTLIB::FPROUND_F80_F32] = "__truncxfsf2";
247 Names[RTLIB::FPROUND_F128_F32] = "__trunctfsf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]248 Names[RTLIB::FPROUND_PPCF128_F32] = "__gcc_qtos";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]249 Names[RTLIB::FPROUND_F80_F64] = "__truncxfdf2";
250 Names[RTLIB::FPROUND_F128_F64] = "__trunctfdf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]251 Names[RTLIB::FPROUND_PPCF128_F64] = "__gcc_qtod";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]252 Names[RTLIB::FPTOSINT_F32_I32] = "__fixsfsi";
253 Names[RTLIB::FPTOSINT_F32_I64] = "__fixsfdi";
254 Names[RTLIB::FPTOSINT_F32_I128] = "__fixsfti";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]255 Names[RTLIB::FPTOSINT_F64_I32] = "__fixdfsi";
256 Names[RTLIB::FPTOSINT_F64_I64] = "__fixdfdi";
257 Names[RTLIB::FPTOSINT_F64_I128] = "__fixdfti";
258 Names[RTLIB::FPTOSINT_F80_I32] = "__fixxfsi";
259 Names[RTLIB::FPTOSINT_F80_I64] = "__fixxfdi";
260 Names[RTLIB::FPTOSINT_F80_I128] = "__fixxfti";
261 Names[RTLIB::FPTOSINT_F128_I32] = "__fixtfsi";
262 Names[RTLIB::FPTOSINT_F128_I64] = "__fixtfdi";
263 Names[RTLIB::FPTOSINT_F128_I128] = "__fixtfti";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]264 Names[RTLIB::FPTOSINT_PPCF128_I32] = "__gcc_qtou";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]265 Names[RTLIB::FPTOSINT_PPCF128_I64] = "__fixtfdi";
266 Names[RTLIB::FPTOSINT_PPCF128_I128] = "__fixtfti";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]267 Names[RTLIB::FPTOUINT_F32_I32] = "__fixunssfsi";
268 Names[RTLIB::FPTOUINT_F32_I64] = "__fixunssfdi";
269 Names[RTLIB::FPTOUINT_F32_I128] = "__fixunssfti";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]270 Names[RTLIB::FPTOUINT_F64_I32] = "__fixunsdfsi";
271 Names[RTLIB::FPTOUINT_F64_I64] = "__fixunsdfdi";
272 Names[RTLIB::FPTOUINT_F64_I128] = "__fixunsdfti";
273 Names[RTLIB::FPTOUINT_F80_I32] = "__fixunsxfsi";
274 Names[RTLIB::FPTOUINT_F80_I64] = "__fixunsxfdi";
275 Names[RTLIB::FPTOUINT_F80_I128] = "__fixunsxfti";
276 Names[RTLIB::FPTOUINT_F128_I32] = "__fixunstfsi";
277 Names[RTLIB::FPTOUINT_F128_I64] = "__fixunstfdi";
278 Names[RTLIB::FPTOUINT_F128_I128] = "__fixunstfti";
279 Names[RTLIB::FPTOUINT_PPCF128_I32] = "__fixunstfsi";
280 Names[RTLIB::FPTOUINT_PPCF128_I64] = "__fixunstfdi";
281 Names[RTLIB::FPTOUINT_PPCF128_I128] = "__fixunstfti";
282 Names[RTLIB::SINTTOFP_I32_F32] = "__floatsisf";
283 Names[RTLIB::SINTTOFP_I32_F64] = "__floatsidf";
284 Names[RTLIB::SINTTOFP_I32_F80] = "__floatsixf";
285 Names[RTLIB::SINTTOFP_I32_F128] = "__floatsitf";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]286 Names[RTLIB::SINTTOFP_I32_PPCF128] = "__gcc_itoq";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]287 Names[RTLIB::SINTTOFP_I64_F32] = "__floatdisf";
288 Names[RTLIB::SINTTOFP_I64_F64] = "__floatdidf";
289 Names[RTLIB::SINTTOFP_I64_F80] = "__floatdixf";
290 Names[RTLIB::SINTTOFP_I64_F128] = "__floatditf";
291 Names[RTLIB::SINTTOFP_I64_PPCF128] = "__floatditf";
292 Names[RTLIB::SINTTOFP_I128_F32] = "__floattisf";
293 Names[RTLIB::SINTTOFP_I128_F64] = "__floattidf";
294 Names[RTLIB::SINTTOFP_I128_F80] = "__floattixf";
295 Names[RTLIB::SINTTOFP_I128_F128] = "__floattitf";
296 Names[RTLIB::SINTTOFP_I128_PPCF128] = "__floattitf";
297 Names[RTLIB::UINTTOFP_I32_F32] = "__floatunsisf";
298 Names[RTLIB::UINTTOFP_I32_F64] = "__floatunsidf";
299 Names[RTLIB::UINTTOFP_I32_F80] = "__floatunsixf";
300 Names[RTLIB::UINTTOFP_I32_F128] = "__floatunsitf";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]301 Names[RTLIB::UINTTOFP_I32_PPCF128] = "__gcc_utoq";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]302 Names[RTLIB::UINTTOFP_I64_F32] = "__floatundisf";
303 Names[RTLIB::UINTTOFP_I64_F64] = "__floatundidf";
304 Names[RTLIB::UINTTOFP_I64_F80] = "__floatundixf";
305 Names[RTLIB::UINTTOFP_I64_F128] = "__floatunditf";
306 Names[RTLIB::UINTTOFP_I64_PPCF128] = "__floatunditf";
307 Names[RTLIB::UINTTOFP_I128_F32] = "__floatuntisf";
308 Names[RTLIB::UINTTOFP_I128_F64] = "__floatuntidf";
309 Names[RTLIB::UINTTOFP_I128_F80] = "__floatuntixf";
310 Names[RTLIB::UINTTOFP_I128_F128] = "__floatuntitf";
311 Names[RTLIB::UINTTOFP_I128_PPCF128] = "__floatuntitf";
312 Names[RTLIB::OEQ_F32] = "__eqsf2";
313 Names[RTLIB::OEQ_F64] = "__eqdf2";
314 Names[RTLIB::OEQ_F128] = "__eqtf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]315 Names[RTLIB::OEQ_PPCF128] = "__gcc_qeq";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]316 Names[RTLIB::UNE_F32] = "__nesf2";
317 Names[RTLIB::UNE_F64] = "__nedf2";
318 Names[RTLIB::UNE_F128] = "__netf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]319 Names[RTLIB::UNE_PPCF128] = "__gcc_qne";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]320 Names[RTLIB::OGE_F32] = "__gesf2";
321 Names[RTLIB::OGE_F64] = "__gedf2";
322 Names[RTLIB::OGE_F128] = "__getf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]323 Names[RTLIB::OGE_PPCF128] = "__gcc_qge";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]324 Names[RTLIB::OLT_F32] = "__ltsf2";
325 Names[RTLIB::OLT_F64] = "__ltdf2";
326 Names[RTLIB::OLT_F128] = "__lttf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]327 Names[RTLIB::OLT_PPCF128] = "__gcc_qlt";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]328 Names[RTLIB::OLE_F32] = "__lesf2";
329 Names[RTLIB::OLE_F64] = "__ledf2";
330 Names[RTLIB::OLE_F128] = "__letf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]331 Names[RTLIB::OLE_PPCF128] = "__gcc_qle";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]332 Names[RTLIB::OGT_F32] = "__gtsf2";
333 Names[RTLIB::OGT_F64] = "__gtdf2";
334 Names[RTLIB::OGT_F128] = "__gttf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]335 Names[RTLIB::OGT_PPCF128] = "__gcc_qgt";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]336 Names[RTLIB::UO_F32] = "__unordsf2";
337 Names[RTLIB::UO_F64] = "__unorddf2";
338 Names[RTLIB::UO_F128] = "__unordtf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]339 Names[RTLIB::UO_PPCF128] = "__gcc_qunord";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]340 Names[RTLIB::O_F32] = "__unordsf2";
341 Names[RTLIB::O_F64] = "__unorddf2";
342 Names[RTLIB::O_F128] = "__unordtf2";
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]343 Names[RTLIB::O_PPCF128] = "__gcc_qunord";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]344 Names[RTLIB::MEMCPY] = "memcpy";
345 Names[RTLIB::MEMMOVE] = "memmove";
346 Names[RTLIB::MEMSET] = "memset";
347 Names[RTLIB::UNWIND_RESUME] = "_Unwind_Resume";
348 Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1] = "__sync_val_compare_and_swap_1";
349 Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2] = "__sync_val_compare_and_swap_2";
350 Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4] = "__sync_val_compare_and_swap_4";
351 Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8] = "__sync_val_compare_and_swap_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]352 Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_16] = "__sync_val_compare_and_swap_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]353 Names[RTLIB::SYNC_LOCK_TEST_AND_SET_1] = "__sync_lock_test_and_set_1";
354 Names[RTLIB::SYNC_LOCK_TEST_AND_SET_2] = "__sync_lock_test_and_set_2";
355 Names[RTLIB::SYNC_LOCK_TEST_AND_SET_4] = "__sync_lock_test_and_set_4";
356 Names[RTLIB::SYNC_LOCK_TEST_AND_SET_8] = "__sync_lock_test_and_set_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]357 Names[RTLIB::SYNC_LOCK_TEST_AND_SET_16] = "__sync_lock_test_and_set_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]358 Names[RTLIB::SYNC_FETCH_AND_ADD_1] = "__sync_fetch_and_add_1";
359 Names[RTLIB::SYNC_FETCH_AND_ADD_2] = "__sync_fetch_and_add_2";
360 Names[RTLIB::SYNC_FETCH_AND_ADD_4] = "__sync_fetch_and_add_4";
361 Names[RTLIB::SYNC_FETCH_AND_ADD_8] = "__sync_fetch_and_add_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]362 Names[RTLIB::SYNC_FETCH_AND_ADD_16] = "__sync_fetch_and_add_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]363 Names[RTLIB::SYNC_FETCH_AND_SUB_1] = "__sync_fetch_and_sub_1";
364 Names[RTLIB::SYNC_FETCH_AND_SUB_2] = "__sync_fetch_and_sub_2";
365 Names[RTLIB::SYNC_FETCH_AND_SUB_4] = "__sync_fetch_and_sub_4";
366 Names[RTLIB::SYNC_FETCH_AND_SUB_8] = "__sync_fetch_and_sub_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]367 Names[RTLIB::SYNC_FETCH_AND_SUB_16] = "__sync_fetch_and_sub_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]368 Names[RTLIB::SYNC_FETCH_AND_AND_1] = "__sync_fetch_and_and_1";
369 Names[RTLIB::SYNC_FETCH_AND_AND_2] = "__sync_fetch_and_and_2";
370 Names[RTLIB::SYNC_FETCH_AND_AND_4] = "__sync_fetch_and_and_4";
371 Names[RTLIB::SYNC_FETCH_AND_AND_8] = "__sync_fetch_and_and_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]372 Names[RTLIB::SYNC_FETCH_AND_AND_16] = "__sync_fetch_and_and_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]373 Names[RTLIB::SYNC_FETCH_AND_OR_1] = "__sync_fetch_and_or_1";
374 Names[RTLIB::SYNC_FETCH_AND_OR_2] = "__sync_fetch_and_or_2";
375 Names[RTLIB::SYNC_FETCH_AND_OR_4] = "__sync_fetch_and_or_4";
376 Names[RTLIB::SYNC_FETCH_AND_OR_8] = "__sync_fetch_and_or_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]377 Names[RTLIB::SYNC_FETCH_AND_OR_16] = "__sync_fetch_and_or_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]378 Names[RTLIB::SYNC_FETCH_AND_XOR_1] = "__sync_fetch_and_xor_1";
379 Names[RTLIB::SYNC_FETCH_AND_XOR_2] = "__sync_fetch_and_xor_2";
380 Names[RTLIB::SYNC_FETCH_AND_XOR_4] = "__sync_fetch_and_xor_4";
381 Names[RTLIB::SYNC_FETCH_AND_XOR_8] = "__sync_fetch_and_xor_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]382 Names[RTLIB::SYNC_FETCH_AND_XOR_16] = "__sync_fetch_and_xor_16";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]383 Names[RTLIB::SYNC_FETCH_AND_NAND_1] = "__sync_fetch_and_nand_1";
384 Names[RTLIB::SYNC_FETCH_AND_NAND_2] = "__sync_fetch_and_nand_2";
385 Names[RTLIB::SYNC_FETCH_AND_NAND_4] = "__sync_fetch_and_nand_4";
386 Names[RTLIB::SYNC_FETCH_AND_NAND_8] = "__sync_fetch_and_nand_8";
David Majnemer451b7dd2013-10-18 08:03:43 +0000[diff] [blame]387 Names[RTLIB::SYNC_FETCH_AND_NAND_16] = "__sync_fetch_and_nand_16";
Tim Northovera564d322013-10-25 09:30:20 +0000[diff] [blame]388 Names[RTLIB::SYNC_FETCH_AND_MAX_1] = "__sync_fetch_and_max_1";
389 Names[RTLIB::SYNC_FETCH_AND_MAX_2] = "__sync_fetch_and_max_2";
390 Names[RTLIB::SYNC_FETCH_AND_MAX_4] = "__sync_fetch_and_max_4";
391 Names[RTLIB::SYNC_FETCH_AND_MAX_8] = "__sync_fetch_and_max_8";
392 Names[RTLIB::SYNC_FETCH_AND_MAX_16] = "__sync_fetch_and_max_16";
393 Names[RTLIB::SYNC_FETCH_AND_UMAX_1] = "__sync_fetch_and_umax_1";
394 Names[RTLIB::SYNC_FETCH_AND_UMAX_2] = "__sync_fetch_and_umax_2";
395 Names[RTLIB::SYNC_FETCH_AND_UMAX_4] = "__sync_fetch_and_umax_4";
396 Names[RTLIB::SYNC_FETCH_AND_UMAX_8] = "__sync_fetch_and_umax_8";
397 Names[RTLIB::SYNC_FETCH_AND_UMAX_16] = "__sync_fetch_and_umax_16";
398 Names[RTLIB::SYNC_FETCH_AND_MIN_1] = "__sync_fetch_and_min_1";
399 Names[RTLIB::SYNC_FETCH_AND_MIN_2] = "__sync_fetch_and_min_2";
400 Names[RTLIB::SYNC_FETCH_AND_MIN_4] = "__sync_fetch_and_min_4";
401 Names[RTLIB::SYNC_FETCH_AND_MIN_8] = "__sync_fetch_and_min_8";
402 Names[RTLIB::SYNC_FETCH_AND_MIN_16] = "__sync_fetch_and_min_16";
403 Names[RTLIB::SYNC_FETCH_AND_UMIN_1] = "__sync_fetch_and_umin_1";
404 Names[RTLIB::SYNC_FETCH_AND_UMIN_2] = "__sync_fetch_and_umin_2";
405 Names[RTLIB::SYNC_FETCH_AND_UMIN_4] = "__sync_fetch_and_umin_4";
406 Names[RTLIB::SYNC_FETCH_AND_UMIN_8] = "__sync_fetch_and_umin_8";
407 Names[RTLIB::SYNC_FETCH_AND_UMIN_16] = "__sync_fetch_and_umin_16";
Evan Cheng0e88c7d2013-01-29 02:32:37 +0000[diff] [blame]408
Eric Christopherd91d6052014-06-02 20:51:49 +0000[diff] [blame]409 if (TT.getEnvironment() == Triple::GNU) {
Paul Redmondf29ddfe2013-02-15 18:45:18 +0000[diff] [blame]410 Names[RTLIB::SINCOS_F32] = "sincosf";
411 Names[RTLIB::SINCOS_F64] = "sincos";
412 Names[RTLIB::SINCOS_F80] = "sincosl";
413 Names[RTLIB::SINCOS_F128] = "sincosl";
414 Names[RTLIB::SINCOS_PPCF128] = "sincosl";
415 } else {
416 // These are generally not available.
Craig Topperc0196b12014-04-14 00:51:57 +0000[diff] [blame]417 Names[RTLIB::SINCOS_F32] = nullptr;
418 Names[RTLIB::SINCOS_F64] = nullptr;
419 Names[RTLIB::SINCOS_F80] = nullptr;
420 Names[RTLIB::SINCOS_F128] = nullptr;
421 Names[RTLIB::SINCOS_PPCF128] = nullptr;
Paul Redmondf29ddfe2013-02-15 18:45:18 +0000[diff] [blame]422 }
Michael Gottesman7dce16f2013-08-12 18:45:38 +0000[diff] [blame]423
Simon Pilgrim2bfd9122014-11-29 19:18:21 +0000[diff] [blame]424 if (!TT.isOSOpenBSD()) {
Michael Gottesman7dce16f2013-08-12 18:45:38 +0000[diff] [blame]425 Names[RTLIB::STACKPROTECTOR_CHECK_FAIL] = "__stack_chk_fail";
426 } else {
427 // These are generally not available.
Craig Topperc0196b12014-04-14 00:51:57 +0000[diff] [blame]428 Names[RTLIB::STACKPROTECTOR_CHECK_FAIL] = nullptr;
Michael Gottesman7dce16f2013-08-12 18:45:38 +0000[diff] [blame]429 }
Ahmed Bougacha6402ad22015-05-14 01:00:51 +0000[diff] [blame]430
431 // For f16/f32 conversions, Darwin uses the standard naming scheme, instead
432 // of the gnueabi-style __gnu_*_ieee.
433 // FIXME: What about other targets?
434 if (TT.isOSDarwin()) {
435 Names[RTLIB::FPEXT_F16_F32] = "__extendhfsf2";
436 Names[RTLIB::FPROUND_F32_F16] = "__truncsfhf2";
437 }
Sanjoy Dasdf9ae702016-03-24 20:23:29 +0000[diff] [blame]438
439 Names[RTLIB::DEOPTIMIZE] = "__llvm_deoptimize";
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]440}
441
442/// InitLibcallCallingConvs - Set default libcall CallingConvs.
443///
444static void InitLibcallCallingConvs(CallingConv::ID *CCs) {
445 for (int i = 0; i < RTLIB::UNKNOWN_LIBCALL; ++i) {
446 CCs[i] = CallingConv::C;
447 }
448}
449
450/// getFPEXT - Return the FPEXT_*_* value for the given types, or
451/// UNKNOWN_LIBCALL if there is none.
452RTLIB::Libcall RTLIB::getFPEXT(EVT OpVT, EVT RetVT) {
Tim Northoverf7a02c12014-07-21 09:13:56 +0000[diff] [blame]453 if (OpVT == MVT::f16) {
454 if (RetVT == MVT::f32)
455 return FPEXT_F16_F32;
456 } else if (OpVT == MVT::f32) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]457 if (RetVT == MVT::f64)
458 return FPEXT_F32_F64;
459 if (RetVT == MVT::f128)
460 return FPEXT_F32_F128;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]461 if (RetVT == MVT::ppcf128)
462 return FPEXT_F32_PPCF128;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]463 } else if (OpVT == MVT::f64) {
464 if (RetVT == MVT::f128)
465 return FPEXT_F64_F128;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]466 else if (RetVT == MVT::ppcf128)
467 return FPEXT_F64_PPCF128;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]468 }
469
470 return UNKNOWN_LIBCALL;
471}
472
473/// getFPROUND - Return the FPROUND_*_* value for the given types, or
474/// UNKNOWN_LIBCALL if there is none.
475RTLIB::Libcall RTLIB::getFPROUND(EVT OpVT, EVT RetVT) {
Tim Northover84ce0a62014-07-17 11:12:12 +0000[diff] [blame]476 if (RetVT == MVT::f16) {
477 if (OpVT == MVT::f32)
478 return FPROUND_F32_F16;
479 if (OpVT == MVT::f64)
480 return FPROUND_F64_F16;
481 if (OpVT == MVT::f80)
482 return FPROUND_F80_F16;
483 if (OpVT == MVT::f128)
484 return FPROUND_F128_F16;
485 if (OpVT == MVT::ppcf128)
486 return FPROUND_PPCF128_F16;
487 } else if (RetVT == MVT::f32) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]488 if (OpVT == MVT::f64)
489 return FPROUND_F64_F32;
490 if (OpVT == MVT::f80)
491 return FPROUND_F80_F32;
492 if (OpVT == MVT::f128)
493 return FPROUND_F128_F32;
494 if (OpVT == MVT::ppcf128)
495 return FPROUND_PPCF128_F32;
496 } else if (RetVT == MVT::f64) {
497 if (OpVT == MVT::f80)
498 return FPROUND_F80_F64;
499 if (OpVT == MVT::f128)
500 return FPROUND_F128_F64;
501 if (OpVT == MVT::ppcf128)
502 return FPROUND_PPCF128_F64;
503 }
504
505 return UNKNOWN_LIBCALL;
506}
507
508/// getFPTOSINT - Return the FPTOSINT_*_* value for the given types, or
509/// UNKNOWN_LIBCALL if there is none.
510RTLIB::Libcall RTLIB::getFPTOSINT(EVT OpVT, EVT RetVT) {
511 if (OpVT == MVT::f32) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]512 if (RetVT == MVT::i32)
513 return FPTOSINT_F32_I32;
514 if (RetVT == MVT::i64)
515 return FPTOSINT_F32_I64;
516 if (RetVT == MVT::i128)
517 return FPTOSINT_F32_I128;
518 } else if (OpVT == MVT::f64) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]519 if (RetVT == MVT::i32)
520 return FPTOSINT_F64_I32;
521 if (RetVT == MVT::i64)
522 return FPTOSINT_F64_I64;
523 if (RetVT == MVT::i128)
524 return FPTOSINT_F64_I128;
525 } else if (OpVT == MVT::f80) {
526 if (RetVT == MVT::i32)
527 return FPTOSINT_F80_I32;
528 if (RetVT == MVT::i64)
529 return FPTOSINT_F80_I64;
530 if (RetVT == MVT::i128)
531 return FPTOSINT_F80_I128;
532 } else if (OpVT == MVT::f128) {
533 if (RetVT == MVT::i32)
534 return FPTOSINT_F128_I32;
535 if (RetVT == MVT::i64)
536 return FPTOSINT_F128_I64;
537 if (RetVT == MVT::i128)
538 return FPTOSINT_F128_I128;
539 } else if (OpVT == MVT::ppcf128) {
540 if (RetVT == MVT::i32)
541 return FPTOSINT_PPCF128_I32;
542 if (RetVT == MVT::i64)
543 return FPTOSINT_PPCF128_I64;
544 if (RetVT == MVT::i128)
545 return FPTOSINT_PPCF128_I128;
546 }
547 return UNKNOWN_LIBCALL;
548}
549
550/// getFPTOUINT - Return the FPTOUINT_*_* value for the given types, or
551/// UNKNOWN_LIBCALL if there is none.
552RTLIB::Libcall RTLIB::getFPTOUINT(EVT OpVT, EVT RetVT) {
553 if (OpVT == MVT::f32) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]554 if (RetVT == MVT::i32)
555 return FPTOUINT_F32_I32;
556 if (RetVT == MVT::i64)
557 return FPTOUINT_F32_I64;
558 if (RetVT == MVT::i128)
559 return FPTOUINT_F32_I128;
560 } else if (OpVT == MVT::f64) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]561 if (RetVT == MVT::i32)
562 return FPTOUINT_F64_I32;
563 if (RetVT == MVT::i64)
564 return FPTOUINT_F64_I64;
565 if (RetVT == MVT::i128)
566 return FPTOUINT_F64_I128;
567 } else if (OpVT == MVT::f80) {
568 if (RetVT == MVT::i32)
569 return FPTOUINT_F80_I32;
570 if (RetVT == MVT::i64)
571 return FPTOUINT_F80_I64;
572 if (RetVT == MVT::i128)
573 return FPTOUINT_F80_I128;
574 } else if (OpVT == MVT::f128) {
575 if (RetVT == MVT::i32)
576 return FPTOUINT_F128_I32;
577 if (RetVT == MVT::i64)
578 return FPTOUINT_F128_I64;
579 if (RetVT == MVT::i128)
580 return FPTOUINT_F128_I128;
581 } else if (OpVT == MVT::ppcf128) {
582 if (RetVT == MVT::i32)
583 return FPTOUINT_PPCF128_I32;
584 if (RetVT == MVT::i64)
585 return FPTOUINT_PPCF128_I64;
586 if (RetVT == MVT::i128)
587 return FPTOUINT_PPCF128_I128;
588 }
589 return UNKNOWN_LIBCALL;
590}
591
592/// getSINTTOFP - Return the SINTTOFP_*_* value for the given types, or
593/// UNKNOWN_LIBCALL if there is none.
594RTLIB::Libcall RTLIB::getSINTTOFP(EVT OpVT, EVT RetVT) {
595 if (OpVT == MVT::i32) {
596 if (RetVT == MVT::f32)
597 return SINTTOFP_I32_F32;
598 if (RetVT == MVT::f64)
599 return SINTTOFP_I32_F64;
600 if (RetVT == MVT::f80)
601 return SINTTOFP_I32_F80;
602 if (RetVT == MVT::f128)
603 return SINTTOFP_I32_F128;
604 if (RetVT == MVT::ppcf128)
605 return SINTTOFP_I32_PPCF128;
606 } else if (OpVT == MVT::i64) {
607 if (RetVT == MVT::f32)
608 return SINTTOFP_I64_F32;
609 if (RetVT == MVT::f64)
610 return SINTTOFP_I64_F64;
611 if (RetVT == MVT::f80)
612 return SINTTOFP_I64_F80;
613 if (RetVT == MVT::f128)
614 return SINTTOFP_I64_F128;
615 if (RetVT == MVT::ppcf128)
616 return SINTTOFP_I64_PPCF128;
617 } else if (OpVT == MVT::i128) {
618 if (RetVT == MVT::f32)
619 return SINTTOFP_I128_F32;
620 if (RetVT == MVT::f64)
621 return SINTTOFP_I128_F64;
622 if (RetVT == MVT::f80)
623 return SINTTOFP_I128_F80;
624 if (RetVT == MVT::f128)
625 return SINTTOFP_I128_F128;
626 if (RetVT == MVT::ppcf128)
627 return SINTTOFP_I128_PPCF128;
628 }
629 return UNKNOWN_LIBCALL;
630}
631
632/// getUINTTOFP - Return the UINTTOFP_*_* value for the given types, or
633/// UNKNOWN_LIBCALL if there is none.
634RTLIB::Libcall RTLIB::getUINTTOFP(EVT OpVT, EVT RetVT) {
635 if (OpVT == MVT::i32) {
636 if (RetVT == MVT::f32)
637 return UINTTOFP_I32_F32;
638 if (RetVT == MVT::f64)
639 return UINTTOFP_I32_F64;
640 if (RetVT == MVT::f80)
641 return UINTTOFP_I32_F80;
642 if (RetVT == MVT::f128)
643 return UINTTOFP_I32_F128;
644 if (RetVT == MVT::ppcf128)
645 return UINTTOFP_I32_PPCF128;
646 } else if (OpVT == MVT::i64) {
647 if (RetVT == MVT::f32)
648 return UINTTOFP_I64_F32;
649 if (RetVT == MVT::f64)
650 return UINTTOFP_I64_F64;
651 if (RetVT == MVT::f80)
652 return UINTTOFP_I64_F80;
653 if (RetVT == MVT::f128)
654 return UINTTOFP_I64_F128;
655 if (RetVT == MVT::ppcf128)
656 return UINTTOFP_I64_PPCF128;
657 } else if (OpVT == MVT::i128) {
658 if (RetVT == MVT::f32)
659 return UINTTOFP_I128_F32;
660 if (RetVT == MVT::f64)
661 return UINTTOFP_I128_F64;
662 if (RetVT == MVT::f80)
663 return UINTTOFP_I128_F80;
664 if (RetVT == MVT::f128)
665 return UINTTOFP_I128_F128;
666 if (RetVT == MVT::ppcf128)
667 return UINTTOFP_I128_PPCF128;
668 }
669 return UNKNOWN_LIBCALL;
670}
671
James Y Knightf44fc522016-03-16 22:12:04 +0000[diff] [blame]672RTLIB::Libcall RTLIB::getSYNC(unsigned Opc, MVT VT) {
Benjamin Kramerc54c38e2015-03-05 20:04:29 +0000[diff] [blame]673#define OP_TO_LIBCALL(Name, Enum) \
674 case Name: \
675 switch (VT.SimpleTy) { \
676 default: \
677 return UNKNOWN_LIBCALL; \
678 case MVT::i8: \
679 return Enum##_1; \
680 case MVT::i16: \
681 return Enum##_2; \
682 case MVT::i32: \
683 return Enum##_4; \
684 case MVT::i64: \
685 return Enum##_8; \
686 case MVT::i128: \
687 return Enum##_16; \
688 }
689
690 switch (Opc) {
691 OP_TO_LIBCALL(ISD::ATOMIC_SWAP, SYNC_LOCK_TEST_AND_SET)
692 OP_TO_LIBCALL(ISD::ATOMIC_CMP_SWAP, SYNC_VAL_COMPARE_AND_SWAP)
693 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_ADD, SYNC_FETCH_AND_ADD)
694 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_SUB, SYNC_FETCH_AND_SUB)
695 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_AND, SYNC_FETCH_AND_AND)
696 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_OR, SYNC_FETCH_AND_OR)
697 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_XOR, SYNC_FETCH_AND_XOR)
698 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_NAND, SYNC_FETCH_AND_NAND)
699 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_MAX, SYNC_FETCH_AND_MAX)
700 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_UMAX, SYNC_FETCH_AND_UMAX)
701 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_MIN, SYNC_FETCH_AND_MIN)
702 OP_TO_LIBCALL(ISD::ATOMIC_LOAD_UMIN, SYNC_FETCH_AND_UMIN)
703 }
704
705#undef OP_TO_LIBCALL
706
707 return UNKNOWN_LIBCALL;
708}
709
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]710/// InitCmpLibcallCCs - Set default comparison libcall CC.
711///
712static void InitCmpLibcallCCs(ISD::CondCode *CCs) {
713 memset(CCs, ISD::SETCC_INVALID, sizeof(ISD::CondCode)*RTLIB::UNKNOWN_LIBCALL);
714 CCs[RTLIB::OEQ_F32] = ISD::SETEQ;
715 CCs[RTLIB::OEQ_F64] = ISD::SETEQ;
716 CCs[RTLIB::OEQ_F128] = ISD::SETEQ;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]717 CCs[RTLIB::OEQ_PPCF128] = ISD::SETEQ;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]718 CCs[RTLIB::UNE_F32] = ISD::SETNE;
719 CCs[RTLIB::UNE_F64] = ISD::SETNE;
720 CCs[RTLIB::UNE_F128] = ISD::SETNE;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]721 CCs[RTLIB::UNE_PPCF128] = ISD::SETNE;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]722 CCs[RTLIB::OGE_F32] = ISD::SETGE;
723 CCs[RTLIB::OGE_F64] = ISD::SETGE;
724 CCs[RTLIB::OGE_F128] = ISD::SETGE;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]725 CCs[RTLIB::OGE_PPCF128] = ISD::SETGE;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]726 CCs[RTLIB::OLT_F32] = ISD::SETLT;
727 CCs[RTLIB::OLT_F64] = ISD::SETLT;
728 CCs[RTLIB::OLT_F128] = ISD::SETLT;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]729 CCs[RTLIB::OLT_PPCF128] = ISD::SETLT;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]730 CCs[RTLIB::OLE_F32] = ISD::SETLE;
731 CCs[RTLIB::OLE_F64] = ISD::SETLE;
732 CCs[RTLIB::OLE_F128] = ISD::SETLE;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]733 CCs[RTLIB::OLE_PPCF128] = ISD::SETLE;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]734 CCs[RTLIB::OGT_F32] = ISD::SETGT;
735 CCs[RTLIB::OGT_F64] = ISD::SETGT;
736 CCs[RTLIB::OGT_F128] = ISD::SETGT;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]737 CCs[RTLIB::OGT_PPCF128] = ISD::SETGT;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]738 CCs[RTLIB::UO_F32] = ISD::SETNE;
739 CCs[RTLIB::UO_F64] = ISD::SETNE;
740 CCs[RTLIB::UO_F128] = ISD::SETNE;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]741 CCs[RTLIB::UO_PPCF128] = ISD::SETNE;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]742 CCs[RTLIB::O_F32] = ISD::SETEQ;
743 CCs[RTLIB::O_F64] = ISD::SETEQ;
744 CCs[RTLIB::O_F128] = ISD::SETEQ;
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]745 CCs[RTLIB::O_PPCF128] = ISD::SETEQ;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]746}
747
Aditya Nandakumar30531552014-11-13 21:29:21 +0000[diff] [blame]748/// NOTE: The TargetMachine owns TLOF.
Mehdi Aminia28d91d2015-03-10 02:37:25 +0000[diff] [blame]749TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) : TM(tm) {
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]750 initActions();
751
752 // Perform these initializations only once.
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]753 MaxStoresPerMemset = MaxStoresPerMemcpy = MaxStoresPerMemmove = 8;
754 MaxStoresPerMemsetOptSize = MaxStoresPerMemcpyOptSize
755 = MaxStoresPerMemmoveOptSize = 4;
756 UseUnderscoreSetJmp = false;
757 UseUnderscoreLongJmp = false;
758 SelectIsExpensive = false;
Hal Finkeldecb0242014-01-02 21:13:43 +0000[diff] [blame]759 HasMultipleConditionRegisters = false;
Yi Jiangb23edeb2014-04-21 22:22:44 +0000[diff] [blame]760 HasExtractBitsInsn = false;
Matt Arsenaultbf0db912015-01-13 20:53:23 +0000[diff] [blame]761 FsqrtIsCheap = false;
Sanjay Patel943829a2015-07-01 18:10:20 +0000[diff] [blame]762 JumpIsExpensive = JumpIsExpensiveOverride;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]763 PredictableSelectIsExpensive = false;
Tim Northovercea0abb2014-03-29 08:22:29 +0000[diff] [blame]764 MaskAndBranchFoldingIsLegal = false;
Quentin Colombetfc2201e2014-12-17 01:36:17 +0000[diff] [blame]765 EnableExtLdPromotion = false;
Pedro Artigascaa56582014-08-08 16:46:53 +0000[diff] [blame]766 HasFloatingPointExceptions = true;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]767 StackPointerRegisterToSaveRestore = 0;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]768 BooleanContents = UndefinedBooleanContent;
Daniel Sanderscbd44c52014-07-10 10:18:12 +0000[diff] [blame]769 BooleanFloatContents = UndefinedBooleanContent;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]770 BooleanVectorContents = UndefinedBooleanContent;
771 SchedPreferenceInfo = Sched::ILP;
772 JumpBufSize = 0;
773 JumpBufAlignment = 0;
774 MinFunctionAlignment = 0;
775 PrefFunctionAlignment = 0;
776 PrefLoopAlignment = 0;
Matt Arsenaultd8fed1b2015-11-11 18:44:33 +0000[diff] [blame]777 GatherAllAliasesMaxDepth = 6;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]778 MinStackArgumentAlignment = 1;
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]779 MinimumJumpTableEntries = 4;
780
Daniel Sanders110bf6d2015-06-24 13:25:57 +0000[diff] [blame]781 InitLibcallNames(LibcallRoutineNames, TM.getTargetTriple());
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]782 InitCmpLibcallCCs(CmpLibcallCCs);
783 InitLibcallCallingConvs(LibcallCallingConvs);
784}
785
Bill Wendlingeb108ba2013-04-05 21:52:40 +0000[diff] [blame]786void TargetLoweringBase::initActions() {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]787 // All operations default to being supported.
788 memset(OpActions, 0, sizeof(OpActions));
789 memset(LoadExtActions, 0, sizeof(LoadExtActions));
790 memset(TruncStoreActions, 0, sizeof(TruncStoreActions));
791 memset(IndexedModeActions, 0, sizeof(IndexedModeActions));
792 memset(CondCodeActions, 0, sizeof(CondCodeActions));
Craig Topper00230802016-04-08 07:10:46 +0000[diff] [blame]793 std::fill(std::begin(RegClassForVT), std::end(RegClassForVT), nullptr);
794 std::fill(std::begin(TargetDAGCombineArray),
795 std::end(TargetDAGCombineArray), 0);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]796
797 // Set default actions for various operations.
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]798 for (MVT VT : MVT::all_valuetypes()) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]799 // Default all indexed load / store to expand.
800 for (unsigned IM = (unsigned)ISD::PRE_INC;
801 IM != (unsigned)ISD::LAST_INDEXED_MODE; ++IM) {
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]802 setIndexedLoadAction(IM, VT, Expand);
803 setIndexedStoreAction(IM, VT, Expand);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]804 }
805
Tim Northover420a2162014-06-13 14:24:07 +0000[diff] [blame]806 // Most backends expect to see the node which just returns the value loaded.
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]807 setOperationAction(ISD::ATOMIC_CMP_SWAP_WITH_SUCCESS, VT, Expand);
Tim Northover420a2162014-06-13 14:24:07 +0000[diff] [blame]808
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]809 // These operations default to expand.
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]810 setOperationAction(ISD::FGETSIGN, VT, Expand);
811 setOperationAction(ISD::CONCAT_VECTORS, VT, Expand);
812 setOperationAction(ISD::FMINNUM, VT, Expand);
813 setOperationAction(ISD::FMAXNUM, VT, Expand);
James Molloy01cdecc2015-08-11 09:13:05 +0000[diff] [blame]814 setOperationAction(ISD::FMINNAN, VT, Expand);
815 setOperationAction(ISD::FMAXNAN, VT, Expand);
Matt Arsenault0dc54c42015-02-20 22:10:33 +0000[diff] [blame]816 setOperationAction(ISD::FMAD, VT, Expand);
James Molloy7e9776b2015-05-15 09:03:15 +0000[diff] [blame]817 setOperationAction(ISD::SMIN, VT, Expand);
818 setOperationAction(ISD::SMAX, VT, Expand);
819 setOperationAction(ISD::UMIN, VT, Expand);
820 setOperationAction(ISD::UMAX, VT, Expand);
Hal Finkel8ec43c62013-08-09 04:13:44 +0000[diff] [blame]821
Jan Vesely75395482015-04-29 16:30:46 +0000[diff] [blame]822 // Overflow operations default to expand
823 setOperationAction(ISD::SADDO, VT, Expand);
824 setOperationAction(ISD::SSUBO, VT, Expand);
825 setOperationAction(ISD::UADDO, VT, Expand);
826 setOperationAction(ISD::USUBO, VT, Expand);
827 setOperationAction(ISD::SMULO, VT, Expand);
828 setOperationAction(ISD::UMULO, VT, Expand);
Hal Finkelcd8664c2015-12-11 23:11:52 +0000[diff] [blame]829
James Molloy90111f72015-11-12 12:29:09 +0000[diff] [blame]830 setOperationAction(ISD::BITREVERSE, VT, Expand);
831
Hal Finkel8ec43c62013-08-09 04:13:44 +0000[diff] [blame]832 // These library functions default to expand.
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]833 setOperationAction(ISD::FROUND, VT, Expand);
Hal Finkel0c5c01aa2013-08-19 23:35:46 +0000[diff] [blame]834
835 // These operations default to expand for vector types.
Ahmed Bougacha67dd2d22015-01-07 21:27:10 +0000[diff] [blame]836 if (VT.isVector()) {
837 setOperationAction(ISD::FCOPYSIGN, VT, Expand);
838 setOperationAction(ISD::ANY_EXTEND_VECTOR_INREG, VT, Expand);
839 setOperationAction(ISD::SIGN_EXTEND_VECTOR_INREG, VT, Expand);
840 setOperationAction(ISD::ZERO_EXTEND_VECTOR_INREG, VT, Expand);
Chandler Carruthd3561f62014-07-09 22:53:04 +0000[diff] [blame]841 }
Yury Gribovd7dbb662015-12-01 11:40:55 +0000[diff] [blame]842
843 // For most targets @llvm.get.dynamic.area.offest just returns 0.
844 setOperationAction(ISD::GET_DYNAMIC_AREA_OFFSET, VT, Expand);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]845 }
846
847 // Most targets ignore the @llvm.prefetch intrinsic.
848 setOperationAction(ISD::PREFETCH, MVT::Other, Expand);
849
Ahmed Bougachaf9c19da2015-08-28 01:49:59 +0000[diff] [blame]850 // Most targets also ignore the @llvm.readcyclecounter intrinsic.
851 setOperationAction(ISD::READCYCLECOUNTER, MVT::i64, Expand);
852
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]853 // ConstantFP nodes default to expand. Targets can either change this to
854 // Legal, in which case all fp constants are legal, or use isFPImmLegal()
855 // to optimize expansions for certain constants.
856 setOperationAction(ISD::ConstantFP, MVT::f16, Expand);
857 setOperationAction(ISD::ConstantFP, MVT::f32, Expand);
858 setOperationAction(ISD::ConstantFP, MVT::f64, Expand);
859 setOperationAction(ISD::ConstantFP, MVT::f80, Expand);
860 setOperationAction(ISD::ConstantFP, MVT::f128, Expand);
861
862 // These library functions default to expand.
Ahmed Bougacha2a20e272015-03-26 23:21:03 +0000[diff] [blame]863 for (MVT VT : {MVT::f32, MVT::f64, MVT::f128}) {
864 setOperationAction(ISD::FLOG , VT, Expand);
865 setOperationAction(ISD::FLOG2, VT, Expand);
866 setOperationAction(ISD::FLOG10, VT, Expand);
867 setOperationAction(ISD::FEXP , VT, Expand);
868 setOperationAction(ISD::FEXP2, VT, Expand);
869 setOperationAction(ISD::FFLOOR, VT, Expand);
870 setOperationAction(ISD::FMINNUM, VT, Expand);
871 setOperationAction(ISD::FMAXNUM, VT, Expand);
872 setOperationAction(ISD::FNEARBYINT, VT, Expand);
873 setOperationAction(ISD::FCEIL, VT, Expand);
874 setOperationAction(ISD::FRINT, VT, Expand);
875 setOperationAction(ISD::FTRUNC, VT, Expand);
876 setOperationAction(ISD::FROUND, VT, Expand);
877 }
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]878
879 // Default ISD::TRAP to expand (which turns it into abort).
880 setOperationAction(ISD::TRAP, MVT::Other, Expand);
881
882 // On most systems, DEBUGTRAP and TRAP have no difference. The "Expand"
883 // here is to inform DAG Legalizer to replace DEBUGTRAP with TRAP.
884 //
885 setOperationAction(ISD::DEBUGTRAP, MVT::Other, Expand);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]886}
887
Mehdi Aminieaabc512015-07-09 15:12:23 +0000[diff] [blame]888MVT TargetLoweringBase::getScalarShiftAmountTy(const DataLayout &DL,
889 EVT) const {
Mehdi Amini9639d652015-07-09 02:09:20 +0000[diff] [blame]890 return MVT::getIntegerVT(8 * DL.getPointerSize(0));
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]891}
892
Mehdi Amini9639d652015-07-09 02:09:20 +0000[diff] [blame]893EVT TargetLoweringBase::getShiftAmountTy(EVT LHSTy,
894 const DataLayout &DL) const {
Michael Liao6af16fc2013-03-01 18:40:30 +0000[diff] [blame]895 assert(LHSTy.isInteger() && "Shift amount is not an integer type!");
896 if (LHSTy.isVector())
897 return LHSTy;
Mehdi Aminieaabc512015-07-09 15:12:23 +0000[diff] [blame]898 return getScalarShiftAmountTy(DL, LHSTy);
Michael Liao6af16fc2013-03-01 18:40:30 +0000[diff] [blame]899}
900
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]901/// canOpTrap - Returns true if the operation can trap for the value type.
902/// VT must be a legal type.
903bool TargetLoweringBase::canOpTrap(unsigned Op, EVT VT) const {
904 assert(isTypeLegal(VT));
905 switch (Op) {
906 default:
907 return false;
908 case ISD::FDIV:
909 case ISD::FREM:
910 case ISD::SDIV:
911 case ISD::UDIV:
912 case ISD::SREM:
913 case ISD::UREM:
914 return true;
915 }
916}
917
Sanjay Patel943829a2015-07-01 18:10:20 +0000[diff] [blame]918void TargetLoweringBase::setJumpIsExpensive(bool isExpensive) {
919 // If the command-line option was specified, ignore this request.
920 if (!JumpIsExpensiveOverride.getNumOccurrences())
921 JumpIsExpensive = isExpensive;
922}
923
Eric Christopher75dbd7c2015-02-25 22:41:30 +0000[diff] [blame]924TargetLoweringBase::LegalizeKind
925TargetLoweringBase::getTypeConversion(LLVMContext &Context, EVT VT) const {
926 // If this is a simple type, use the ComputeRegisterProp mechanism.
927 if (VT.isSimple()) {
928 MVT SVT = VT.getSimpleVT();
929 assert((unsigned)SVT.SimpleTy < array_lengthof(TransformToType));
930 MVT NVT = TransformToType[SVT.SimpleTy];
931 LegalizeTypeAction LA = ValueTypeActions.getTypeAction(SVT);
932
933 assert((LA == TypeLegal || LA == TypeSoftenFloat ||
934 ValueTypeActions.getTypeAction(NVT) != TypePromoteInteger) &&
935 "Promote may not follow Expand or Promote");
936
937 if (LA == TypeSplitVector)
938 return LegalizeKind(LA,
939 EVT::getVectorVT(Context, SVT.getVectorElementType(),
940 SVT.getVectorNumElements() / 2));
941 if (LA == TypeScalarizeVector)
942 return LegalizeKind(LA, SVT.getVectorElementType());
943 return LegalizeKind(LA, NVT);
944 }
945
946 // Handle Extended Scalar Types.
947 if (!VT.isVector()) {
948 assert(VT.isInteger() && "Float types must be simple");
949 unsigned BitSize = VT.getSizeInBits();
950 // First promote to a power-of-two size, then expand if necessary.
951 if (BitSize < 8 || !isPowerOf2_32(BitSize)) {
952 EVT NVT = VT.getRoundIntegerType(Context);
953 assert(NVT != VT && "Unable to round integer VT");
954 LegalizeKind NextStep = getTypeConversion(Context, NVT);
955 // Avoid multi-step promotion.
956 if (NextStep.first == TypePromoteInteger)
957 return NextStep;
958 // Return rounded integer type.
959 return LegalizeKind(TypePromoteInteger, NVT);
960 }
961
962 return LegalizeKind(TypeExpandInteger,
963 EVT::getIntegerVT(Context, VT.getSizeInBits() / 2));
964 }
965
966 // Handle vector types.
967 unsigned NumElts = VT.getVectorNumElements();
968 EVT EltVT = VT.getVectorElementType();
969
970 // Vectors with only one element are always scalarized.
971 if (NumElts == 1)
972 return LegalizeKind(TypeScalarizeVector, EltVT);
973
974 // Try to widen vector elements until the element type is a power of two and
975 // promote it to a legal type later on, for example:
976 // <3 x i8> -> <4 x i8> -> <4 x i32>
977 if (EltVT.isInteger()) {
978 // Vectors with a number of elements that is not a power of two are always
979 // widened, for example <3 x i8> -> <4 x i8>.
980 if (!VT.isPow2VectorType()) {
981 NumElts = (unsigned)NextPowerOf2(NumElts);
982 EVT NVT = EVT::getVectorVT(Context, EltVT, NumElts);
983 return LegalizeKind(TypeWidenVector, NVT);
984 }
985
986 // Examine the element type.
987 LegalizeKind LK = getTypeConversion(Context, EltVT);
988
989 // If type is to be expanded, split the vector.
990 // <4 x i140> -> <2 x i140>
991 if (LK.first == TypeExpandInteger)
992 return LegalizeKind(TypeSplitVector,
993 EVT::getVectorVT(Context, EltVT, NumElts / 2));
994
995 // Promote the integer element types until a legal vector type is found
996 // or until the element integer type is too big. If a legal type was not
997 // found, fallback to the usual mechanism of widening/splitting the
998 // vector.
999 EVT OldEltVT = EltVT;
1000 while (1) {
1001 // Increase the bitwidth of the element to the next pow-of-two
1002 // (which is greater than 8 bits).
1003 EltVT = EVT::getIntegerVT(Context, 1 + EltVT.getSizeInBits())
1004 .getRoundIntegerType(Context);
1005
1006 // Stop trying when getting a non-simple element type.
1007 // Note that vector elements may be greater than legal vector element
1008 // types. Example: X86 XMM registers hold 64bit element on 32bit
1009 // systems.
1010 if (!EltVT.isSimple())
1011 break;
1012
1013 // Build a new vector type and check if it is legal.
1014 MVT NVT = MVT::getVectorVT(EltVT.getSimpleVT(), NumElts);
1015 // Found a legal promoted vector type.
1016 if (NVT != MVT() && ValueTypeActions.getTypeAction(NVT) == TypeLegal)
1017 return LegalizeKind(TypePromoteInteger,
1018 EVT::getVectorVT(Context, EltVT, NumElts));
1019 }
1020
1021 // Reset the type to the unexpanded type if we did not find a legal vector
1022 // type with a promoted vector element type.
1023 EltVT = OldEltVT;
1024 }
1025
1026 // Try to widen the vector until a legal type is found.
1027 // If there is no wider legal type, split the vector.
1028 while (1) {
1029 // Round up to the next power of 2.
1030 NumElts = (unsigned)NextPowerOf2(NumElts);
1031
1032 // If there is no simple vector type with this many elements then there
1033 // cannot be a larger legal vector type. Note that this assumes that
1034 // there are no skipped intermediate vector types in the simple types.
1035 if (!EltVT.isSimple())
1036 break;
1037 MVT LargerVector = MVT::getVectorVT(EltVT.getSimpleVT(), NumElts);
1038 if (LargerVector == MVT())
1039 break;
1040
1041 // If this type is legal then widen the vector.
1042 if (ValueTypeActions.getTypeAction(LargerVector) == TypeLegal)
1043 return LegalizeKind(TypeWidenVector, LargerVector);
1044 }
1045
1046 // Widen odd vectors to next power of two.
1047 if (!VT.isPow2VectorType()) {
1048 EVT NVT = VT.getPow2VectorType(Context);
1049 return LegalizeKind(TypeWidenVector, NVT);
1050 }
1051
1052 // Vectors with illegal element types are expanded.
1053 EVT NVT = EVT::getVectorVT(Context, EltVT, VT.getVectorNumElements() / 2);
1054 return LegalizeKind(TypeSplitVector, NVT);
1055}
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1056
1057static unsigned getVectorTypeBreakdownMVT(MVT VT, MVT &IntermediateVT,
1058 unsigned &NumIntermediates,
1059 MVT &RegisterVT,
1060 TargetLoweringBase *TLI) {
1061 // Figure out the right, legal destination reg to copy into.
1062 unsigned NumElts = VT.getVectorNumElements();
1063 MVT EltTy = VT.getVectorElementType();
1064
1065 unsigned NumVectorRegs = 1;
1066
1067 // FIXME: We don't support non-power-of-2-sized vectors for now. Ideally we
1068 // could break down into LHS/RHS like LegalizeDAG does.
1069 if (!isPowerOf2_32(NumElts)) {
1070 NumVectorRegs = NumElts;
1071 NumElts = 1;
1072 }
1073
1074 // Divide the input until we get to a supported size. This will always
1075 // end with a scalar if the target doesn't support vectors.
1076 while (NumElts > 1 && !TLI->isTypeLegal(MVT::getVectorVT(EltTy, NumElts))) {
1077 NumElts >>= 1;
1078 NumVectorRegs <<= 1;
1079 }
1080
1081 NumIntermediates = NumVectorRegs;
1082
1083 MVT NewVT = MVT::getVectorVT(EltTy, NumElts);
1084 if (!TLI->isTypeLegal(NewVT))
1085 NewVT = EltTy;
1086 IntermediateVT = NewVT;
1087
1088 unsigned NewVTSize = NewVT.getSizeInBits();
1089
1090 // Convert sizes such as i33 to i64.
1091 if (!isPowerOf2_32(NewVTSize))
1092 NewVTSize = NextPowerOf2(NewVTSize);
1093
1094 MVT DestVT = TLI->getRegisterType(NewVT);
1095 RegisterVT = DestVT;
1096 if (EVT(DestVT).bitsLT(NewVT)) // Value is expanded, e.g. i64 -> i16.
1097 return NumVectorRegs*(NewVTSize/DestVT.getSizeInBits());
1098
1099 // Otherwise, promotion or legal types use the same number of registers as
1100 // the vector decimated to the appropriate level.
1101 return NumVectorRegs;
1102}
1103
1104/// isLegalRC - Return true if the value types that can be represented by the
1105/// specified register class are all legal.
1106bool TargetLoweringBase::isLegalRC(const TargetRegisterClass *RC) const {
1107 for (TargetRegisterClass::vt_iterator I = RC->vt_begin(), E = RC->vt_end();
1108 I != E; ++I) {
1109 if (isTypeLegal(*I))
1110 return true;
1111 }
1112 return false;
1113}
1114
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1115/// Replace/modify any TargetFrameIndex operands with a targte-dependent
1116/// sequence of memory operands that is recognized by PrologEpilogInserter.
1117MachineBasicBlock*
1118TargetLoweringBase::emitPatchPoint(MachineInstr *MI,
1119 MachineBasicBlock *MBB) const {
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1120 MachineFunction &MF = *MI->getParent()->getParent();
Philip Reamescb0f9472015-12-23 23:44:28 +0000[diff] [blame]1121 MachineFrameInfo &MFI = *MF.getFrameInfo();
1122
1123 // We're handling multiple types of operands here:
1124 // PATCHPOINT MetaArgs - live-in, read only, direct
1125 // STATEPOINT Deopt Spill - live-through, read only, indirect
1126 // STATEPOINT Deopt Alloca - live-through, read only, direct
1127 // (We're currently conservative and mark the deopt slots read/write in
1128 // practice.)
1129 // STATEPOINT GC Spill - live-through, read/write, indirect
1130 // STATEPOINT GC Alloca - live-through, read/write, direct
1131 // The live-in vs live-through is handled already (the live through ones are
1132 // all stack slots), but we need to handle the different type of stackmap
1133 // operands and memory effects here.
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1134
1135 // MI changes inside this loop as we grow operands.
1136 for(unsigned OperIdx = 0; OperIdx != MI->getNumOperands(); ++OperIdx) {
1137 MachineOperand &MO = MI->getOperand(OperIdx);
1138 if (!MO.isFI())
1139 continue;
1140
1141 // foldMemoryOperand builds a new MI after replacing a single FI operand
1142 // with the canonical set of five x86 addressing-mode operands.
1143 int FI = MO.getIndex();
1144 MachineInstrBuilder MIB = BuildMI(MF, MI->getDebugLoc(), MI->getDesc());
1145
1146 // Copy operands before the frame-index.
1147 for (unsigned i = 0; i < OperIdx; ++i)
1148 MIB.addOperand(MI->getOperand(i));
Philip Reamescb0f9472015-12-23 23:44:28 +0000[diff] [blame]1149 // Add frame index operands recognized by stackmaps.cpp
1150 if (MFI.isStatepointSpillSlotObjectIndex(FI)) {
1151 // indirect-mem-ref tag, size, #FI, offset.
1152 // Used for spills inserted by StatepointLowering. This codepath is not
1153 // used for patchpoints/stackmaps at all, for these spilling is done via
1154 // foldMemoryOperand callback only.
1155 assert(MI->getOpcode() == TargetOpcode::STATEPOINT && "sanity");
1156 MIB.addImm(StackMaps::IndirectMemRefOp);
1157 MIB.addImm(MFI.getObjectSize(FI));
1158 MIB.addOperand(MI->getOperand(OperIdx));
1159 MIB.addImm(0);
1160 } else {
1161 // direct-mem-ref tag, #FI, offset.
1162 // Used by patchpoint, and direct alloca arguments to statepoints
1163 MIB.addImm(StackMaps::DirectMemRefOp);
1164 MIB.addOperand(MI->getOperand(OperIdx));
1165 MIB.addImm(0);
1166 }
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1167 // Copy the operands after the frame index.
1168 for (unsigned i = OperIdx + 1; i != MI->getNumOperands(); ++i)
1169 MIB.addOperand(MI->getOperand(i));
1170
1171 // Inherit previous memory operands.
1172 MIB->setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
1173 assert(MIB->mayLoad() && "Folded a stackmap use to a non-load!");
1174
1175 // Add a new memory operand for this FI.
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1176 assert(MFI.getObjectOffset(FI) != -1);
Philip Reames0365f1a2014-12-01 22:52:56 +0000[diff] [blame]1177
1178 unsigned Flags = MachineMemOperand::MOLoad;
1179 if (MI->getOpcode() == TargetOpcode::STATEPOINT) {
1180 Flags |= MachineMemOperand::MOStore;
1181 Flags |= MachineMemOperand::MOVolatile;
1182 }
Eric Christopherd9134482014-08-04 21:25:23 +0000[diff] [blame]1183 MachineMemOperand *MMO = MF.getMachineMemOperand(
Alex Lorenze40c8a22015-08-11 23:09:45 +0000[diff] [blame]1184 MachinePointerInfo::getFixedStack(MF, FI), Flags,
Mehdi Aminibd7287e2015-07-16 06:11:10 +0000[diff] [blame]1185 MF.getDataLayout().getPointerSize(), MFI.getObjectAlignment(FI));
Lang Hames39609992013-11-29 03:07:54 +0000[diff] [blame]1186 MIB->addMemOperand(MF, MMO);
1187
1188 // Replace the instruction and update the operand index.
1189 MBB->insert(MachineBasicBlock::iterator(MI), MIB);
1190 OperIdx += (MIB->getNumOperands() - MI->getNumOperands()) - 1;
1191 MI->eraseFromParent();
1192 MI = MIB;
1193 }
1194 return MBB;
1195}
1196
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1197/// findRepresentativeClass - Return the largest legal super-reg register class
1198/// of the register class for the specified type and its associated "cost".
Eric Christopher720ab842015-03-03 19:47:14 +0000[diff] [blame]1199// This function is in TargetLowering because it uses RegClassForVT which would
1200// need to be moved to TargetRegisterInfo and would necessitate moving
1201// isTypeLegal over as well - a massive change that would just require
1202// TargetLowering having a TargetRegisterInfo class member that it would use.
Eric Christopher23a3a7c2015-02-26 00:00:24 +0000[diff] [blame]1203std::pair<const TargetRegisterClass *, uint8_t>
1204TargetLoweringBase::findRepresentativeClass(const TargetRegisterInfo *TRI,
1205 MVT VT) const {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1206 const TargetRegisterClass *RC = RegClassForVT[VT.SimpleTy];
1207 if (!RC)
1208 return std::make_pair(RC, 0);
1209
1210 // Compute the set of all super-register classes.
1211 BitVector SuperRegRC(TRI->getNumRegClasses());
1212 for (SuperRegClassIterator RCI(RC, TRI); RCI.isValid(); ++RCI)
1213 SuperRegRC.setBitsInMask(RCI.getMask());
1214
1215 // Find the first legal register class with the largest spill size.
1216 const TargetRegisterClass *BestRC = RC;
1217 for (int i = SuperRegRC.find_first(); i >= 0; i = SuperRegRC.find_next(i)) {
1218 const TargetRegisterClass *SuperRC = TRI->getRegClass(i);
1219 // We want the largest possible spill size.
1220 if (SuperRC->getSize() <= BestRC->getSize())
1221 continue;
1222 if (!isLegalRC(SuperRC))
1223 continue;
1224 BestRC = SuperRC;
1225 }
1226 return std::make_pair(BestRC, 1);
1227}
1228
1229/// computeRegisterProperties - Once all of the register classes are added,
1230/// this allows us to compute derived properties we expose.
Eric Christopher23a3a7c2015-02-26 00:00:24 +0000[diff] [blame]1231void TargetLoweringBase::computeRegisterProperties(
1232 const TargetRegisterInfo *TRI) {
Craig Topper6438fc32014-11-17 00:26:50 +0000[diff] [blame]1233 static_assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE,
1234 "Too many value types for ValueTypeActions to hold!");
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1235
1236 // Everything defaults to needing one register.
1237 for (unsigned i = 0; i != MVT::LAST_VALUETYPE; ++i) {
1238 NumRegistersForVT[i] = 1;
1239 RegisterTypeForVT[i] = TransformToType[i] = (MVT::SimpleValueType)i;
1240 }
1241 // ...except isVoid, which doesn't need any registers.
1242 NumRegistersForVT[MVT::isVoid] = 0;
1243
1244 // Find the largest integer register class.
1245 unsigned LargestIntReg = MVT::LAST_INTEGER_VALUETYPE;
Craig Topperc0196b12014-04-14 00:51:57 +0000[diff] [blame]1246 for (; RegClassForVT[LargestIntReg] == nullptr; --LargestIntReg)
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1247 assert(LargestIntReg != MVT::i1 && "No integer registers defined!");
1248
1249 // Every integer value type larger than this largest register takes twice as
1250 // many registers to represent as the previous ValueType.
1251 for (unsigned ExpandedReg = LargestIntReg + 1;
1252 ExpandedReg <= MVT::LAST_INTEGER_VALUETYPE; ++ExpandedReg) {
1253 NumRegistersForVT[ExpandedReg] = 2*NumRegistersForVT[ExpandedReg-1];
1254 RegisterTypeForVT[ExpandedReg] = (MVT::SimpleValueType)LargestIntReg;
1255 TransformToType[ExpandedReg] = (MVT::SimpleValueType)(ExpandedReg - 1);
1256 ValueTypeActions.setTypeAction((MVT::SimpleValueType)ExpandedReg,
1257 TypeExpandInteger);
1258 }
1259
1260 // Inspect all of the ValueType's smaller than the largest integer
1261 // register to see which ones need promotion.
1262 unsigned LegalIntReg = LargestIntReg;
1263 for (unsigned IntReg = LargestIntReg - 1;
1264 IntReg >= (unsigned)MVT::i1; --IntReg) {
1265 MVT IVT = (MVT::SimpleValueType)IntReg;
1266 if (isTypeLegal(IVT)) {
1267 LegalIntReg = IntReg;
1268 } else {
1269 RegisterTypeForVT[IntReg] = TransformToType[IntReg] =
1270 (const MVT::SimpleValueType)LegalIntReg;
1271 ValueTypeActions.setTypeAction(IVT, TypePromoteInteger);
1272 }
1273 }
1274
1275 // ppcf128 type is really two f64's.
1276 if (!isTypeLegal(MVT::ppcf128)) {
Petar Jovanovic23e44f52016-02-04 14:43:50 +0000[diff] [blame]1277 if (isTypeLegal(MVT::f64)) {
1278 NumRegistersForVT[MVT::ppcf128] = 2*NumRegistersForVT[MVT::f64];
1279 RegisterTypeForVT[MVT::ppcf128] = MVT::f64;
1280 TransformToType[MVT::ppcf128] = MVT::f64;
1281 ValueTypeActions.setTypeAction(MVT::ppcf128, TypeExpandFloat);
1282 } else {
1283 NumRegistersForVT[MVT::ppcf128] = NumRegistersForVT[MVT::i128];
1284 RegisterTypeForVT[MVT::ppcf128] = RegisterTypeForVT[MVT::i128];
1285 TransformToType[MVT::ppcf128] = MVT::i128;
1286 ValueTypeActions.setTypeAction(MVT::ppcf128, TypeSoftenFloat);
1287 }
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1288 }
1289
Akira Hatanaka3d055582013-03-01 21:11:44 +0000[diff] [blame]1290 // Decide how to handle f128. If the target does not have native f128 support,
1291 // expand it to i128 and we will be generating soft float library calls.
1292 if (!isTypeLegal(MVT::f128)) {
1293 NumRegistersForVT[MVT::f128] = NumRegistersForVT[MVT::i128];
1294 RegisterTypeForVT[MVT::f128] = RegisterTypeForVT[MVT::i128];
1295 TransformToType[MVT::f128] = MVT::i128;
1296 ValueTypeActions.setTypeAction(MVT::f128, TypeSoftenFloat);
1297 }
1298
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1299 // Decide how to handle f64. If the target does not have native f64 support,
1300 // expand it to i64 and we will be generating soft float library calls.
1301 if (!isTypeLegal(MVT::f64)) {
1302 NumRegistersForVT[MVT::f64] = NumRegistersForVT[MVT::i64];
1303 RegisterTypeForVT[MVT::f64] = RegisterTypeForVT[MVT::i64];
1304 TransformToType[MVT::f64] = MVT::i64;
1305 ValueTypeActions.setTypeAction(MVT::f64, TypeSoftenFloat);
1306 }
1307
Ahmed Bougachaa0f35592015-03-28 01:22:37 +0000[diff] [blame]1308 // Decide how to handle f32. If the target does not have native f32 support,
1309 // expand it to i32 and we will be generating soft float library calls.
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1310 if (!isTypeLegal(MVT::f32)) {
Ahmed Bougachaa0f35592015-03-28 01:22:37 +0000[diff] [blame]1311 NumRegistersForVT[MVT::f32] = NumRegistersForVT[MVT::i32];
1312 RegisterTypeForVT[MVT::f32] = RegisterTypeForVT[MVT::i32];
1313 TransformToType[MVT::f32] = MVT::i32;
1314 ValueTypeActions.setTypeAction(MVT::f32, TypeSoftenFloat);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1315 }
1316
Oliver Stannard56358572015-11-09 11:03:18 +0000[diff] [blame]1317 // Decide how to handle f16. If the target does not have native f16 support,
1318 // promote it to f32, because there are no f16 library calls (except for
1319 // conversions).
Tim Northover20bd0ce2014-07-18 12:41:46 +0000[diff] [blame]1320 if (!isTypeLegal(MVT::f16)) {
Oliver Stannard56358572015-11-09 11:03:18 +0000[diff] [blame]1321 NumRegistersForVT[MVT::f16] = NumRegistersForVT[MVT::f32];
1322 RegisterTypeForVT[MVT::f16] = RegisterTypeForVT[MVT::f32];
1323 TransformToType[MVT::f16] = MVT::f32;
1324 ValueTypeActions.setTypeAction(MVT::f16, TypePromoteFloat);
Tim Northover20bd0ce2014-07-18 12:41:46 +0000[diff] [blame]1325 }
1326
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1327 // Loop over all of the vector value types to see which need transformations.
1328 for (unsigned i = MVT::FIRST_VECTOR_VALUETYPE;
1329 i <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++i) {
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1330 MVT VT = (MVT::SimpleValueType) i;
1331 if (isTypeLegal(VT))
1332 continue;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1333
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1334 MVT EltVT = VT.getVectorElementType();
1335 unsigned NElts = VT.getVectorNumElements();
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1336 bool IsLegalWiderType = false;
1337 LegalizeTypeAction PreferredAction = getPreferredVectorAction(VT);
1338 switch (PreferredAction) {
1339 case TypePromoteInteger: {
1340 // Try to promote the elements of integer vectors. If no legal
1341 // promotion was found, fall through to the widen-vector method.
1342 for (unsigned nVT = i + 1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) {
1343 MVT SVT = (MVT::SimpleValueType) nVT;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1344 // Promote vectors of integers to vectors with the same number
1345 // of elements, with a wider element type.
1346 if (SVT.getVectorElementType().getSizeInBits() > EltVT.getSizeInBits()
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1347 && SVT.getVectorNumElements() == NElts && isTypeLegal(SVT)
1348 && SVT.getScalarType().isInteger()) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1349 TransformToType[i] = SVT;
1350 RegisterTypeForVT[i] = SVT;
1351 NumRegistersForVT[i] = 1;
1352 ValueTypeActions.setTypeAction(VT, TypePromoteInteger);
1353 IsLegalWiderType = true;
1354 break;
1355 }
1356 }
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1357 if (IsLegalWiderType)
1358 break;
1359 }
1360 case TypeWidenVector: {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1361 // Try to widen the vector.
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1362 for (unsigned nVT = i + 1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) {
1363 MVT SVT = (MVT::SimpleValueType) nVT;
1364 if (SVT.getVectorElementType() == EltVT
1365 && SVT.getVectorNumElements() > NElts && isTypeLegal(SVT)) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1366 TransformToType[i] = SVT;
1367 RegisterTypeForVT[i] = SVT;
1368 NumRegistersForVT[i] = 1;
1369 ValueTypeActions.setTypeAction(VT, TypeWidenVector);
1370 IsLegalWiderType = true;
1371 break;
1372 }
1373 }
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1374 if (IsLegalWiderType)
1375 break;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1376 }
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1377 case TypeSplitVector:
1378 case TypeScalarizeVector: {
1379 MVT IntermediateVT;
1380 MVT RegisterVT;
1381 unsigned NumIntermediates;
1382 NumRegistersForVT[i] = getVectorTypeBreakdownMVT(VT, IntermediateVT,
1383 NumIntermediates, RegisterVT, this);
1384 RegisterTypeForVT[i] = RegisterVT;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1385
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1386 MVT NVT = VT.getPow2VectorType();
1387 if (NVT == VT) {
1388 // Type is already a power of 2. The default action is to split.
1389 TransformToType[i] = MVT::Other;
1390 if (PreferredAction == TypeScalarizeVector)
1391 ValueTypeActions.setTypeAction(VT, TypeScalarizeVector);
Hao Liue02b1a02014-10-31 02:35:34 +0000[diff] [blame]1392 else if (PreferredAction == TypeSplitVector)
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1393 ValueTypeActions.setTypeAction(VT, TypeSplitVector);
Hao Liue02b1a02014-10-31 02:35:34 +0000[diff] [blame]1394 else
1395 // Set type action according to the number of elements.
1396 ValueTypeActions.setTypeAction(VT, NElts == 1 ? TypeScalarizeVector
1397 : TypeSplitVector);
Chandler Carruth9d010ff2014-07-03 00:23:43 +0000[diff] [blame]1398 } else {
1399 TransformToType[i] = NVT;
1400 ValueTypeActions.setTypeAction(VT, TypeWidenVector);
1401 }
1402 break;
1403 }
1404 default:
1405 llvm_unreachable("Unknown vector legalization action!");
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1406 }
1407 }
1408
1409 // Determine the 'representative' register class for each value type.
1410 // An representative register class is the largest (meaning one which is
1411 // not a sub-register class / subreg register class) legal register class for
1412 // a group of value types. For example, on i386, i8, i16, and i32
1413 // representative would be GR32; while on x86_64 it's GR64.
1414 for (unsigned i = 0; i != MVT::LAST_VALUETYPE; ++i) {
1415 const TargetRegisterClass* RRC;
1416 uint8_t Cost;
Eric Christopher23a3a7c2015-02-26 00:00:24 +0000[diff] [blame]1417 std::tie(RRC, Cost) = findRepresentativeClass(TRI, (MVT::SimpleValueType)i);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1418 RepRegClassForVT[i] = RRC;
1419 RepRegClassCostForVT[i] = Cost;
1420 }
1421}
1422
Mehdi Amini44ede332015-07-09 02:09:04 +0000[diff] [blame]1423EVT TargetLoweringBase::getSetCCResultType(const DataLayout &DL, LLVMContext &,
1424 EVT VT) const {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1425 assert(!VT.isVector() && "No default SetCC type for vectors!");
Mehdi Amini44ede332015-07-09 02:09:04 +0000[diff] [blame]1426 return getPointerTy(DL).SimpleTy;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1427}
1428
1429MVT::SimpleValueType TargetLoweringBase::getCmpLibcallReturnType() const {
1430 return MVT::i32; // return the default value
1431}
1432
1433/// getVectorTypeBreakdown - Vector types are broken down into some number of
1434/// legal first class types. For example, MVT::v8f32 maps to 2 MVT::v4f32
1435/// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.
1436/// Similarly, MVT::v2i64 turns into 4 MVT::i32 values with both PPC and X86.
1437///
1438/// This method returns the number of registers needed, and the VT for each
1439/// register. It also returns the VT and quantity of the intermediate values
1440/// before they are promoted/expanded.
1441///
1442unsigned TargetLoweringBase::getVectorTypeBreakdown(LLVMContext &Context, EVT VT,
1443 EVT &IntermediateVT,
1444 unsigned &NumIntermediates,
1445 MVT &RegisterVT) const {
1446 unsigned NumElts = VT.getVectorNumElements();
1447
1448 // If there is a wider vector type with the same element type as this one,
1449 // or a promoted vector type that has the same number of elements which
1450 // are wider, then we should convert to that legal vector type.
1451 // This handles things like <2 x float> -> <4 x float> and
1452 // <4 x i1> -> <4 x i32>.
1453 LegalizeTypeAction TA = getTypeAction(Context, VT);
1454 if (NumElts != 1 && (TA == TypeWidenVector || TA == TypePromoteInteger)) {
1455 EVT RegisterEVT = getTypeToTransformTo(Context, VT);
1456 if (isTypeLegal(RegisterEVT)) {
1457 IntermediateVT = RegisterEVT;
1458 RegisterVT = RegisterEVT.getSimpleVT();
1459 NumIntermediates = 1;
1460 return 1;
1461 }
1462 }
1463
1464 // Figure out the right, legal destination reg to copy into.
1465 EVT EltTy = VT.getVectorElementType();
1466
1467 unsigned NumVectorRegs = 1;
1468
1469 // FIXME: We don't support non-power-of-2-sized vectors for now. Ideally we
1470 // could break down into LHS/RHS like LegalizeDAG does.
1471 if (!isPowerOf2_32(NumElts)) {
1472 NumVectorRegs = NumElts;
1473 NumElts = 1;
1474 }
1475
1476 // Divide the input until we get to a supported size. This will always
1477 // end with a scalar if the target doesn't support vectors.
1478 while (NumElts > 1 && !isTypeLegal(
1479 EVT::getVectorVT(Context, EltTy, NumElts))) {
1480 NumElts >>= 1;
1481 NumVectorRegs <<= 1;
1482 }
1483
1484 NumIntermediates = NumVectorRegs;
1485
1486 EVT NewVT = EVT::getVectorVT(Context, EltTy, NumElts);
1487 if (!isTypeLegal(NewVT))
1488 NewVT = EltTy;
1489 IntermediateVT = NewVT;
1490
1491 MVT DestVT = getRegisterType(Context, NewVT);
1492 RegisterVT = DestVT;
1493 unsigned NewVTSize = NewVT.getSizeInBits();
1494
1495 // Convert sizes such as i33 to i64.
1496 if (!isPowerOf2_32(NewVTSize))
1497 NewVTSize = NextPowerOf2(NewVTSize);
1498
1499 if (EVT(DestVT).bitsLT(NewVT)) // Value is expanded, e.g. i64 -> i16.
1500 return NumVectorRegs*(NewVTSize/DestVT.getSizeInBits());
1501
1502 // Otherwise, promotion or legal types use the same number of registers as
1503 // the vector decimated to the appropriate level.
1504 return NumVectorRegs;
1505}
1506
1507/// Get the EVTs and ArgFlags collections that represent the legalized return
1508/// type of the given function. This does not require a DAG or a return value,
1509/// and is suitable for use before any DAGs for the function are constructed.
1510/// TODO: Move this out of TargetLowering.cpp.
Mehdi Amini56228da2015-07-09 01:57:34 +0000[diff] [blame]1511void llvm::GetReturnInfo(Type *ReturnType, AttributeSet attr,
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1512 SmallVectorImpl<ISD::OutputArg> &Outs,
Mehdi Amini56228da2015-07-09 01:57:34 +0000[diff] [blame]1513 const TargetLowering &TLI, const DataLayout &DL) {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1514 SmallVector<EVT, 4> ValueVTs;
Mehdi Amini56228da2015-07-09 01:57:34 +0000[diff] [blame]1515 ComputeValueVTs(TLI, DL, ReturnType, ValueVTs);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1516 unsigned NumValues = ValueVTs.size();
1517 if (NumValues == 0) return;
1518
1519 for (unsigned j = 0, f = NumValues; j != f; ++j) {
1520 EVT VT = ValueVTs[j];
1521 ISD::NodeType ExtendKind = ISD::ANY_EXTEND;
1522
1523 if (attr.hasAttribute(AttributeSet::ReturnIndex, Attribute::SExt))
1524 ExtendKind = ISD::SIGN_EXTEND;
1525 else if (attr.hasAttribute(AttributeSet::ReturnIndex, Attribute::ZExt))
1526 ExtendKind = ISD::ZERO_EXTEND;
1527
1528 // FIXME: C calling convention requires the return type to be promoted to
1529 // at least 32-bit. But this is not necessary for non-C calling
1530 // conventions. The frontend should mark functions whose return values
1531 // require promoting with signext or zeroext attributes.
1532 if (ExtendKind != ISD::ANY_EXTEND && VT.isInteger()) {
1533 MVT MinVT = TLI.getRegisterType(ReturnType->getContext(), MVT::i32);
1534 if (VT.bitsLT(MinVT))
1535 VT = MinVT;
1536 }
1537
1538 unsigned NumParts = TLI.getNumRegisters(ReturnType->getContext(), VT);
1539 MVT PartVT = TLI.getRegisterType(ReturnType->getContext(), VT);
1540
1541 // 'inreg' on function refers to return value
1542 ISD::ArgFlagsTy Flags = ISD::ArgFlagsTy();
1543 if (attr.hasAttribute(AttributeSet::ReturnIndex, Attribute::InReg))
1544 Flags.setInReg();
1545
1546 // Propagate extension type if any
1547 if (attr.hasAttribute(AttributeSet::ReturnIndex, Attribute::SExt))
1548 Flags.setSExt();
1549 else if (attr.hasAttribute(AttributeSet::ReturnIndex, Attribute::ZExt))
1550 Flags.setZExt();
1551
1552 for (unsigned i = 0; i < NumParts; ++i)
Tom Stellard8d7d4de2013-10-23 00:44:24 +0000[diff] [blame]1553 Outs.push_back(ISD::OutputArg(Flags, PartVT, VT, /*isFixed=*/true, 0, 0));
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1554 }
1555}
1556
1557/// getByValTypeAlignment - Return the desired alignment for ByVal aggregate
1558/// function arguments in the caller parameter area. This is the actual
1559/// alignment, not its logarithm.
Mehdi Amini5c183d52015-07-09 02:09:28 +0000[diff] [blame]1560unsigned TargetLoweringBase::getByValTypeAlignment(Type *Ty,
1561 const DataLayout &DL) const {
1562 return DL.getABITypeAlignment(Ty);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1563}
1564
Sanjay Patel0f9dcf82015-07-29 18:24:18 +0000[diff] [blame]1565bool TargetLoweringBase::allowsMemoryAccess(LLVMContext &Context,
1566 const DataLayout &DL, EVT VT,
1567 unsigned AddrSpace,
1568 unsigned Alignment,
1569 bool *Fast) const {
1570 // Check if the specified alignment is sufficient based on the data layout.
1571 // TODO: While using the data layout works in practice, a better solution
1572 // would be to implement this check directly (make this a virtual function).
1573 // For example, the ABI alignment may change based on software platform while
1574 // this function should only be affected by hardware implementation.
1575 Type *Ty = VT.getTypeForEVT(Context);
1576 if (Alignment >= DL.getABITypeAlignment(Ty)) {
1577 // Assume that an access that meets the ABI-specified alignment is fast.
1578 if (Fast != nullptr)
1579 *Fast = true;
1580 return true;
1581 }
1582
1583 // This is a misaligned access.
1584 return allowsMisalignedMemoryAccesses(VT, AddrSpace, Alignment, Fast);
1585}
1586
1587
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1588//===----------------------------------------------------------------------===//
1589// TargetTransformInfo Helpers
1590//===----------------------------------------------------------------------===//
1591
1592int TargetLoweringBase::InstructionOpcodeToISD(unsigned Opcode) const {
1593 enum InstructionOpcodes {
1594#define HANDLE_INST(NUM, OPCODE, CLASS) OPCODE = NUM,
1595#define LAST_OTHER_INST(NUM) InstructionOpcodesCount = NUM
1596#include "llvm/IR/Instruction.def"
1597 };
1598 switch (static_cast<InstructionOpcodes>(Opcode)) {
1599 case Ret: return 0;
1600 case Br: return 0;
1601 case Switch: return 0;
1602 case IndirectBr: return 0;
1603 case Invoke: return 0;
1604 case Resume: return 0;
1605 case Unreachable: return 0;
David Majnemer654e1302015-07-31 17:58:14 +0000[diff] [blame]1606 case CleanupRet: return 0;
David Majnemer654e1302015-07-31 17:58:14 +0000[diff] [blame]1607 case CatchRet: return 0;
David Majnemer8a1c45d2015-12-12 05:38:55 +0000[diff] [blame]1608 case CatchPad: return 0;
1609 case CatchSwitch: return 0;
David Majnemer8a1c45d2015-12-12 05:38:55 +0000[diff] [blame]1610 case CleanupPad: return 0;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1611 case Add: return ISD::ADD;
1612 case FAdd: return ISD::FADD;
1613 case Sub: return ISD::SUB;
1614 case FSub: return ISD::FSUB;
1615 case Mul: return ISD::MUL;
1616 case FMul: return ISD::FMUL;
1617 case UDiv: return ISD::UDIV;
Benjamin Kramerce4b3fe2014-04-27 18:47:54 +0000[diff] [blame]1618 case SDiv: return ISD::SDIV;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1619 case FDiv: return ISD::FDIV;
1620 case URem: return ISD::UREM;
1621 case SRem: return ISD::SREM;
1622 case FRem: return ISD::FREM;
1623 case Shl: return ISD::SHL;
1624 case LShr: return ISD::SRL;
1625 case AShr: return ISD::SRA;
1626 case And: return ISD::AND;
1627 case Or: return ISD::OR;
1628 case Xor: return ISD::XOR;
1629 case Alloca: return 0;
1630 case Load: return ISD::LOAD;
1631 case Store: return ISD::STORE;
1632 case GetElementPtr: return 0;
1633 case Fence: return 0;
1634 case AtomicCmpXchg: return 0;
1635 case AtomicRMW: return 0;
1636 case Trunc: return ISD::TRUNCATE;
1637 case ZExt: return ISD::ZERO_EXTEND;
1638 case SExt: return ISD::SIGN_EXTEND;
1639 case FPToUI: return ISD::FP_TO_UINT;
1640 case FPToSI: return ISD::FP_TO_SINT;
1641 case UIToFP: return ISD::UINT_TO_FP;
1642 case SIToFP: return ISD::SINT_TO_FP;
1643 case FPTrunc: return ISD::FP_ROUND;
1644 case FPExt: return ISD::FP_EXTEND;
1645 case PtrToInt: return ISD::BITCAST;
1646 case IntToPtr: return ISD::BITCAST;
1647 case BitCast: return ISD::BITCAST;
Matt Arsenaultb03bd4d2013-11-15 01:34:59 +0000[diff] [blame]1648 case AddrSpaceCast: return ISD::ADDRSPACECAST;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1649 case ICmp: return ISD::SETCC;
1650 case FCmp: return ISD::SETCC;
1651 case PHI: return 0;
1652 case Call: return 0;
1653 case Select: return ISD::SELECT;
1654 case UserOp1: return 0;
1655 case UserOp2: return 0;
1656 case VAArg: return 0;
1657 case ExtractElement: return ISD::EXTRACT_VECTOR_ELT;
1658 case InsertElement: return ISD::INSERT_VECTOR_ELT;
1659 case ShuffleVector: return ISD::VECTOR_SHUFFLE;
1660 case ExtractValue: return ISD::MERGE_VALUES;
1661 case InsertValue: return ISD::MERGE_VALUES;
1662 case LandingPad: return 0;
1663 }
1664
1665 llvm_unreachable("Unknown instruction type encountered!");
1666}
1667
Chandler Carruth93205eb2015-08-05 18:08:10 +0000[diff] [blame]1668std::pair<int, MVT>
Mehdi Amini44ede332015-07-09 02:09:04 +0000[diff] [blame]1669TargetLoweringBase::getTypeLegalizationCost(const DataLayout &DL,
1670 Type *Ty) const {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1671 LLVMContext &C = Ty->getContext();
Mehdi Amini44ede332015-07-09 02:09:04 +0000[diff] [blame]1672 EVT MTy = getValueType(DL, Ty);
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1673
Chandler Carruth93205eb2015-08-05 18:08:10 +0000[diff] [blame]1674 int Cost = 1;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1675 // We keep legalizing the type until we find a legal kind. We assume that
1676 // the only operation that costs anything is the split. After splitting
1677 // we need to handle two types.
1678 while (true) {
1679 LegalizeKind LK = getTypeConversion(C, MTy);
1680
1681 if (LK.first == TypeLegal)
1682 return std::make_pair(Cost, MTy.getSimpleVT());
1683
1684 if (LK.first == TypeSplitVector || LK.first == TypeExpandInteger)
1685 Cost *= 2;
1686
Chih-Hung Hsiehed7d81e2015-12-03 22:02:40 +0000[diff] [blame]1687 // Do not loop with f128 type.
1688 if (MTy == LK.second)
1689 return std::make_pair(Cost, MTy.getSimpleVT());
1690
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1691 // Keep legalizing the type.
1692 MTy = LK.second;
1693 }
1694}
1695
Evgeniy Stepanovd1aad262015-10-26 18:28:25 +0000[diff] [blame]1696Value *TargetLoweringBase::getSafeStackPointerLocation(IRBuilder<> &IRB) const {
1697 if (!TM.getTargetTriple().isAndroid())
1698 return nullptr;
1699
1700 // Android provides a libc function to retrieve the address of the current
1701 // thread's unsafe stack pointer.
1702 Module *M = IRB.GetInsertBlock()->getParent()->getParent();
1703 Type *StackPtrTy = Type::getInt8PtrTy(M->getContext());
1704 Value *Fn = M->getOrInsertFunction("__safestack_pointer_address",
1705 StackPtrTy->getPointerTo(0), nullptr);
1706 return IRB.CreateCall(Fn);
1707}
1708
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1709//===----------------------------------------------------------------------===//
1710// Loop Strength Reduction hooks
1711//===----------------------------------------------------------------------===//
1712
1713/// isLegalAddressingMode - Return true if the addressing mode represented
1714/// by AM is legal for this target, for a load/store of the specified type.
Mehdi Amini0cdec1e2015-07-09 02:09:40 +0000[diff] [blame]1715bool TargetLoweringBase::isLegalAddressingMode(const DataLayout &DL,
1716 const AddrMode &AM, Type *Ty,
Matt Arsenaultbd7d80a2015-06-01 05:31:59 +0000[diff] [blame]1717 unsigned AS) const {
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1718 // The default implementation of this implements a conservative RISCy, r+r and
1719 // r+i addr mode.
1720
1721 // Allows a sign-extended 16-bit immediate field.
1722 if (AM.BaseOffs <= -(1LL << 16) || AM.BaseOffs >= (1LL << 16)-1)
1723 return false;
1724
1725 // No global is ever allowed as a base.
1726 if (AM.BaseGV)
1727 return false;
1728
1729 // Only support r+r,
1730 switch (AM.Scale) {
1731 case 0: // "r+i" or just "i", depending on HasBaseReg.
1732 break;
1733 case 1:
1734 if (AM.HasBaseReg && AM.BaseOffs) // "r+r+i" is not allowed.
1735 return false;
1736 // Otherwise we have r+r or r+i.
1737 break;
1738 case 2:
1739 if (AM.HasBaseReg || AM.BaseOffs) // 2*r+r or 2*r+i is not allowed.
1740 return false;
1741 // Allow 2*r as r+r.
1742 break;
Tom Stellard728d4172014-02-14 21:10:34 +0000[diff] [blame]1743 default: // Don't allow n * r
1744 return false;
Benjamin Kramer56b31bd2013-01-11 20:05:37 +0000[diff] [blame]1745 }
1746
1747 return true;
1748}
Tim Shen00127562016-04-08 21:26:31 +0000[diff] [blame^]1749
1750//===----------------------------------------------------------------------===//
1751// Stack Protector
1752//===----------------------------------------------------------------------===//
1753
1754// For OpenBSD return its special guard variable. Otherwise return nullptr,
1755// so that SelectionDAG handle SSP.
1756Value *TargetLoweringBase::getIRStackGuard(IRBuilder<> &IRB) const {
1757 if (getTargetMachine().getTargetTriple().isOSOpenBSD()) {
1758 Module &M = *IRB.GetInsertBlock()->getParent()->getParent();
1759 PointerType *PtrTy = Type::getInt8PtrTy(M.getContext());
1760 auto Guard = cast<GlobalValue>(M.getOrInsertGlobal("__guard_local", PtrTy));
1761 Guard->setVisibility(GlobalValue::HiddenVisibility);
1762 return Guard;
1763 }
1764 return nullptr;
1765}
1766
1767// Currently only support "standard" __stack_chk_guard.
1768// TODO: add LOAD_STACK_GUARD support.
1769void TargetLoweringBase::insertSSPDeclarations(Module &M) const {
1770 M.getOrInsertGlobal("__stack_chk_guard", Type::getInt8PtrTy(M.getContext()));
1771}
1772
1773// Currently only support "standard" __stack_chk_guard.
1774// TODO: add LOAD_STACK_GUARD support.
1775Value *TargetLoweringBase::getSDStackGuard(const Module &M) const {
1776 return M.getGlobalVariable("__stack_chk_guard");
1777}