LLVM 19.0.0git
RuntimeLibcalls.cpp
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1//===- RuntimeLibcalls.cpp - Interface for runtime libcalls -----*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/IR/RuntimeLibcalls.h"
10
11using namespace llvm;
12using namespace RTLIB;
13
14/// Set default libcall names. If a target wants to opt-out of a libcall it
15/// should be placed here.
16void RuntimeLibcallsInfo::initLibcalls(const Triple &TT) {
17 std::fill(std::begin(LibcallRoutineNames), std::end(LibcallRoutineNames),
18 nullptr);
19
20#define HANDLE_LIBCALL(code, name) setLibcallName(RTLIB::code, name);
21#include "llvm/IR/RuntimeLibcalls.def"
22#undef HANDLE_LIBCALL
23
24 // Initialize calling conventions to their default.
25 for (int LC = 0; LC < RTLIB::UNKNOWN_LIBCALL; ++LC)
26 setLibcallCallingConv((RTLIB::Libcall)LC, CallingConv::C);
27
28 // Use the f128 variants of math functions on x86_64
29 if (TT.getArch() == Triple::ArchType::x86_64 && TT.isGNUEnvironment()) {
30 setLibcallName(RTLIB::REM_F128, "fmodf128");
31 setLibcallName(RTLIB::FMA_F128, "fmaf128");
32 setLibcallName(RTLIB::SQRT_F128, "sqrtf128");
33 setLibcallName(RTLIB::CBRT_F128, "cbrtf128");
34 setLibcallName(RTLIB::LOG_F128, "logf128");
35 setLibcallName(RTLIB::LOG_FINITE_F128, "__logf128_finite");
36 setLibcallName(RTLIB::LOG2_F128, "log2f128");
37 setLibcallName(RTLIB::LOG2_FINITE_F128, "__log2f128_finite");
38 setLibcallName(RTLIB::LOG10_F128, "log10f128");
39 setLibcallName(RTLIB::LOG10_FINITE_F128, "__log10f128_finite");
40 setLibcallName(RTLIB::EXP_F128, "expf128");
41 setLibcallName(RTLIB::EXP_FINITE_F128, "__expf128_finite");
42 setLibcallName(RTLIB::EXP2_F128, "exp2f128");
43 setLibcallName(RTLIB::EXP2_FINITE_F128, "__exp2f128_finite");
44 setLibcallName(RTLIB::EXP10_F128, "exp10f128");
45 setLibcallName(RTLIB::SIN_F128, "sinf128");
46 setLibcallName(RTLIB::COS_F128, "cosf128");
47 setLibcallName(RTLIB::TAN_F128, "tanf128");
48 setLibcallName(RTLIB::SINCOS_F128, "sincosf128");
49 setLibcallName(RTLIB::ASIN_F128, "asinf128");
50 setLibcallName(RTLIB::ACOS_F128, "acosf128");
51 setLibcallName(RTLIB::ATAN_F128, "atanf128");
52 setLibcallName(RTLIB::SINH_F128, "sinhf128");
53 setLibcallName(RTLIB::COSH_F128, "coshf128");
54 setLibcallName(RTLIB::TANH_F128, "tanhf128");
55 setLibcallName(RTLIB::POW_F128, "powf128");
56 setLibcallName(RTLIB::POW_FINITE_F128, "__powf128_finite");
57 setLibcallName(RTLIB::CEIL_F128, "ceilf128");
58 setLibcallName(RTLIB::TRUNC_F128, "truncf128");
59 setLibcallName(RTLIB::RINT_F128, "rintf128");
60 setLibcallName(RTLIB::NEARBYINT_F128, "nearbyintf128");
61 setLibcallName(RTLIB::ROUND_F128, "roundf128");
62 setLibcallName(RTLIB::ROUNDEVEN_F128, "roundevenf128");
63 setLibcallName(RTLIB::FLOOR_F128, "floorf128");
64 setLibcallName(RTLIB::COPYSIGN_F128, "copysignf128");
65 setLibcallName(RTLIB::FMIN_F128, "fminf128");
66 setLibcallName(RTLIB::FMAX_F128, "fmaxf128");
67 setLibcallName(RTLIB::LROUND_F128, "lroundf128");
68 setLibcallName(RTLIB::LLROUND_F128, "llroundf128");
69 setLibcallName(RTLIB::LRINT_F128, "lrintf128");
70 setLibcallName(RTLIB::LLRINT_F128, "llrintf128");
71 setLibcallName(RTLIB::LDEXP_F128, "ldexpf128");
72 setLibcallName(RTLIB::FREXP_F128, "frexpf128");
73 }
74
75 // For IEEE quad-precision libcall names, PPC uses "kf" instead of "tf".
76 if (TT.isPPC()) {
77 setLibcallName(RTLIB::ADD_F128, "__addkf3");
78 setLibcallName(RTLIB::SUB_F128, "__subkf3");
79 setLibcallName(RTLIB::MUL_F128, "__mulkf3");
80 setLibcallName(RTLIB::DIV_F128, "__divkf3");
81 setLibcallName(RTLIB::POWI_F128, "__powikf2");
82 setLibcallName(RTLIB::FPEXT_F32_F128, "__extendsfkf2");
83 setLibcallName(RTLIB::FPEXT_F64_F128, "__extenddfkf2");
84 setLibcallName(RTLIB::FPROUND_F128_F32, "__trunckfsf2");
85 setLibcallName(RTLIB::FPROUND_F128_F64, "__trunckfdf2");
86 setLibcallName(RTLIB::FPTOSINT_F128_I32, "__fixkfsi");
87 setLibcallName(RTLIB::FPTOSINT_F128_I64, "__fixkfdi");
88 setLibcallName(RTLIB::FPTOSINT_F128_I128, "__fixkfti");
89 setLibcallName(RTLIB::FPTOUINT_F128_I32, "__fixunskfsi");
90 setLibcallName(RTLIB::FPTOUINT_F128_I64, "__fixunskfdi");
91 setLibcallName(RTLIB::FPTOUINT_F128_I128, "__fixunskfti");
92 setLibcallName(RTLIB::SINTTOFP_I32_F128, "__floatsikf");
93 setLibcallName(RTLIB::SINTTOFP_I64_F128, "__floatdikf");
94 setLibcallName(RTLIB::SINTTOFP_I128_F128, "__floattikf");
95 setLibcallName(RTLIB::UINTTOFP_I32_F128, "__floatunsikf");
96 setLibcallName(RTLIB::UINTTOFP_I64_F128, "__floatundikf");
97 setLibcallName(RTLIB::UINTTOFP_I128_F128, "__floatuntikf");
98 setLibcallName(RTLIB::OEQ_F128, "__eqkf2");
99 setLibcallName(RTLIB::UNE_F128, "__nekf2");
100 setLibcallName(RTLIB::OGE_F128, "__gekf2");
101 setLibcallName(RTLIB::OLT_F128, "__ltkf2");
102 setLibcallName(RTLIB::OLE_F128, "__lekf2");
103 setLibcallName(RTLIB::OGT_F128, "__gtkf2");
104 setLibcallName(RTLIB::UO_F128, "__unordkf2");
105 }
106
107 // A few names are different on particular architectures or environments.
108 if (TT.isOSDarwin()) {
109 // For f16/f32 conversions, Darwin uses the standard naming scheme,
110 // instead of the gnueabi-style __gnu_*_ieee.
111 // FIXME: What about other targets?
112 setLibcallName(RTLIB::FPEXT_F16_F32, "__extendhfsf2");
113 setLibcallName(RTLIB::FPROUND_F32_F16, "__truncsfhf2");
114
115 // Some darwins have an optimized __bzero/bzero function.
116 switch (TT.getArch()) {
117 case Triple::x86:
118 case Triple::x86_64:
119 if (TT.isMacOSX() && !TT.isMacOSXVersionLT(10, 6))
120 setLibcallName(RTLIB::BZERO, "__bzero");
121 break;
122 case Triple::aarch64:
123 case Triple::aarch64_32:
124 setLibcallName(RTLIB::BZERO, "bzero");
125 break;
126 default:
127 break;
128 }
129
130 if (darwinHasSinCos(TT)) {
131 setLibcallName(RTLIB::SINCOS_STRET_F32, "__sincosf_stret");
132 setLibcallName(RTLIB::SINCOS_STRET_F64, "__sincos_stret");
133 if (TT.isWatchABI()) {
134 setLibcallCallingConv(RTLIB::SINCOS_STRET_F32,
135 CallingConv::ARM_AAPCS_VFP);
136 setLibcallCallingConv(RTLIB::SINCOS_STRET_F64,
137 CallingConv::ARM_AAPCS_VFP);
138 }
139 }
140
141 switch (TT.getOS()) {
142 case Triple::MacOSX:
143 if (TT.isMacOSXVersionLT(10, 9)) {
144 setLibcallName(RTLIB::EXP10_F32, nullptr);
145 setLibcallName(RTLIB::EXP10_F64, nullptr);
146 } else {
147 setLibcallName(RTLIB::EXP10_F32, "__exp10f");
148 setLibcallName(RTLIB::EXP10_F64, "__exp10");
149 }
150 break;
151 case Triple::IOS:
152 if (TT.isOSVersionLT(7, 0)) {
153 setLibcallName(RTLIB::EXP10_F32, nullptr);
154 setLibcallName(RTLIB::EXP10_F64, nullptr);
155 break;
156 }
157 [[fallthrough]];
158 case Triple::TvOS:
159 case Triple::WatchOS:
160 case Triple::XROS:
161 setLibcallName(RTLIB::EXP10_F32, "__exp10f");
162 setLibcallName(RTLIB::EXP10_F64, "__exp10");
163 break;
164 default:
165 break;
166 }
167 } else {
168 setLibcallName(RTLIB::FPEXT_F16_F32, "__gnu_h2f_ieee");
169 setLibcallName(RTLIB::FPROUND_F32_F16, "__gnu_f2h_ieee");
170 }
171
172 if (TT.isGNUEnvironment() || TT.isOSFuchsia() ||
173 (TT.isAndroid() && !TT.isAndroidVersionLT(9))) {
174 setLibcallName(RTLIB::SINCOS_F32, "sincosf");
175 setLibcallName(RTLIB::SINCOS_F64, "sincos");
176 setLibcallName(RTLIB::SINCOS_F80, "sincosl");
177 setLibcallName(RTLIB::SINCOS_F128, "sincosl");
178 setLibcallName(RTLIB::SINCOS_PPCF128, "sincosl");
179 }
180
181 if (TT.isPS()) {
182 setLibcallName(RTLIB::SINCOS_F32, "sincosf");
183 setLibcallName(RTLIB::SINCOS_F64, "sincos");
184 }
185
186 if (TT.isOSOpenBSD()) {
187 setLibcallName(RTLIB::STACKPROTECTOR_CHECK_FAIL, nullptr);
188 }
189
190 if (TT.isOSWindows() && !TT.isOSCygMing()) {
191 setLibcallName(RTLIB::LDEXP_F32, nullptr);
192 setLibcallName(RTLIB::LDEXP_F80, nullptr);
193 setLibcallName(RTLIB::LDEXP_F128, nullptr);
194 setLibcallName(RTLIB::LDEXP_PPCF128, nullptr);
195
196 setLibcallName(RTLIB::FREXP_F32, nullptr);
197 setLibcallName(RTLIB::FREXP_F80, nullptr);
198 setLibcallName(RTLIB::FREXP_F128, nullptr);
199 setLibcallName(RTLIB::FREXP_PPCF128, nullptr);
200 }
201
202 if (TT.isAArch64()) {
203 if (TT.isOSMSVCRT()) {
204 // MSVCRT doesn't have powi; fall back to pow
205 setLibcallName(RTLIB::POWI_F32, nullptr);
206 setLibcallName(RTLIB::POWI_F64, nullptr);
207 }
208 }
209
210 // Disable most libcalls on AMDGPU.
211 if (TT.isAMDGPU()) {
212 for (int I = 0; I < RTLIB::UNKNOWN_LIBCALL; ++I) {
213 if (I < RTLIB::ATOMIC_LOAD || I > RTLIB::ATOMIC_FETCH_NAND_16)
214 setLibcallName(static_cast<RTLIB::Libcall>(I), nullptr);
215 }
216 }
217
218 // Disable most libcalls on NVPTX.
219 if (TT.isNVPTX()) {
220 for (int I = 0; I < RTLIB::UNKNOWN_LIBCALL; ++I)
221 if (I < RTLIB::ATOMIC_LOAD || I > RTLIB::ATOMIC_FETCH_NAND_16)
222 setLibcallName(static_cast<RTLIB::Libcall>(I), nullptr);
223 }
224
225 if (TT.isARM() || TT.isThumb()) {
226 // These libcalls are not available in 32-bit.
227 setLibcallName(RTLIB::SHL_I128, nullptr);
228 setLibcallName(RTLIB::SRL_I128, nullptr);
229 setLibcallName(RTLIB::SRA_I128, nullptr);
230 setLibcallName(RTLIB::MUL_I128, nullptr);
231 setLibcallName(RTLIB::MULO_I64, nullptr);
232 setLibcallName(RTLIB::MULO_I128, nullptr);
233
234 if (TT.isOSMSVCRT()) {
235 // MSVCRT doesn't have powi; fall back to pow
236 setLibcallName(RTLIB::POWI_F32, nullptr);
237 setLibcallName(RTLIB::POWI_F64, nullptr);
238 }
239 }
240
241 if (TT.getArch() == Triple::ArchType::avr) {
242 // Division rtlib functions (not supported), use divmod functions instead
243 setLibcallName(RTLIB::SDIV_I8, nullptr);
244 setLibcallName(RTLIB::SDIV_I16, nullptr);
245 setLibcallName(RTLIB::SDIV_I32, nullptr);
246 setLibcallName(RTLIB::UDIV_I8, nullptr);
247 setLibcallName(RTLIB::UDIV_I16, nullptr);
248 setLibcallName(RTLIB::UDIV_I32, nullptr);
249
250 // Modulus rtlib functions (not supported), use divmod functions instead
251 setLibcallName(RTLIB::SREM_I8, nullptr);
252 setLibcallName(RTLIB::SREM_I16, nullptr);
253 setLibcallName(RTLIB::SREM_I32, nullptr);
254 setLibcallName(RTLIB::UREM_I8, nullptr);
255 setLibcallName(RTLIB::UREM_I16, nullptr);
256 setLibcallName(RTLIB::UREM_I32, nullptr);
257 }
258
259 if (TT.getArch() == Triple::ArchType::hexagon) {
260 // These cause problems when the shift amount is non-constant.
261 setLibcallName(RTLIB::SHL_I128, nullptr);
262 setLibcallName(RTLIB::SRL_I128, nullptr);
263 setLibcallName(RTLIB::SRA_I128, nullptr);
264 }
265
266 if (TT.isLoongArch()) {
267 if (!TT.isLoongArch64()) {
268 // Set libcalls.
269 setLibcallName(RTLIB::MUL_I128, nullptr);
270 // The MULO libcall is not part of libgcc, only compiler-rt.
271 setLibcallName(RTLIB::MULO_I64, nullptr);
272 }
273 // The MULO libcall is not part of libgcc, only compiler-rt.
274 setLibcallName(RTLIB::MULO_I128, nullptr);
275 }
276
277 if (TT.isMIPS32()) {
278 // These libcalls are not available in 32-bit.
279 setLibcallName(RTLIB::SHL_I128, nullptr);
280 setLibcallName(RTLIB::SRL_I128, nullptr);
281 setLibcallName(RTLIB::SRA_I128, nullptr);
282 setLibcallName(RTLIB::MUL_I128, nullptr);
283 setLibcallName(RTLIB::MULO_I64, nullptr);
284 setLibcallName(RTLIB::MULO_I128, nullptr);
285 }
286
287 if (TT.isPPC()) {
288 if (!TT.isPPC64()) {
289 // These libcalls are not available in 32-bit.
290 setLibcallName(RTLIB::SHL_I128, nullptr);
291 setLibcallName(RTLIB::SRL_I128, nullptr);
292 setLibcallName(RTLIB::SRA_I128, nullptr);
293 setLibcallName(RTLIB::MUL_I128, nullptr);
294 setLibcallName(RTLIB::MULO_I64, nullptr);
295 }
296 setLibcallName(RTLIB::MULO_I128, nullptr);
297 }
298
299 if (TT.isRISCV32()) {
300 // These libcalls are not available in 32-bit.
301 setLibcallName(RTLIB::SHL_I128, nullptr);
302 setLibcallName(RTLIB::SRL_I128, nullptr);
303 setLibcallName(RTLIB::SRA_I128, nullptr);
304 setLibcallName(RTLIB::MUL_I128, nullptr);
305 setLibcallName(RTLIB::MULO_I64, nullptr);
306 }
307
308 if (TT.isSPARC()) {
309 if (!TT.isSPARC64()) {
310 // These libcalls are not available in 32-bit.
311 setLibcallName(RTLIB::MULO_I64, nullptr);
312 setLibcallName(RTLIB::MUL_I128, nullptr);
313 setLibcallName(RTLIB::SHL_I128, nullptr);
314 setLibcallName(RTLIB::SRL_I128, nullptr);
315 setLibcallName(RTLIB::SRA_I128, nullptr);
316 }
317 setLibcallName(RTLIB::MULO_I128, nullptr);
318 }
319
320 if (TT.isSystemZ()) {
321 setLibcallName(RTLIB::SRL_I128, nullptr);
322 setLibcallName(RTLIB::SHL_I128, nullptr);
323 setLibcallName(RTLIB::SRA_I128, nullptr);
324 }
325
326 if (TT.isX86()) {
327 if (TT.getArch() == Triple::ArchType::x86) {
328 // These libcalls are not available in 32-bit.
329 setLibcallName(RTLIB::SHL_I128, nullptr);
330 setLibcallName(RTLIB::SRL_I128, nullptr);
331 setLibcallName(RTLIB::SRA_I128, nullptr);
332 setLibcallName(RTLIB::MUL_I128, nullptr);
333 // The MULO libcall is not part of libgcc, only compiler-rt.
334 setLibcallName(RTLIB::MULO_I64, nullptr);
335 }
336
337 // The MULO libcall is not part of libgcc, only compiler-rt.
338 setLibcallName(RTLIB::MULO_I128, nullptr);
339
340 if (TT.isOSMSVCRT()) {
341 // MSVCRT doesn't have powi; fall back to pow
342 setLibcallName(RTLIB::POWI_F32, nullptr);
343 setLibcallName(RTLIB::POWI_F64, nullptr);
344 }
345 }
346}
347
348void RuntimeLibcallsInfo::initCmpLibcallCCs() {
349 std::fill(CmpLibcallCCs, CmpLibcallCCs + RTLIB::UNKNOWN_LIBCALL,
350 ISD::SETCC_INVALID);
351 CmpLibcallCCs[RTLIB::OEQ_F32] = ISD::SETEQ;
352 CmpLibcallCCs[RTLIB::OEQ_F64] = ISD::SETEQ;
353 CmpLibcallCCs[RTLIB::OEQ_F128] = ISD::SETEQ;
354 CmpLibcallCCs[RTLIB::OEQ_PPCF128] = ISD::SETEQ;
355 CmpLibcallCCs[RTLIB::UNE_F32] = ISD::SETNE;
356 CmpLibcallCCs[RTLIB::UNE_F64] = ISD::SETNE;
357 CmpLibcallCCs[RTLIB::UNE_F128] = ISD::SETNE;
358 CmpLibcallCCs[RTLIB::UNE_PPCF128] = ISD::SETNE;
359 CmpLibcallCCs[RTLIB::OGE_F32] = ISD::SETGE;
360 CmpLibcallCCs[RTLIB::OGE_F64] = ISD::SETGE;
361 CmpLibcallCCs[RTLIB::OGE_F128] = ISD::SETGE;
362 CmpLibcallCCs[RTLIB::OGE_PPCF128] = ISD::SETGE;
363 CmpLibcallCCs[RTLIB::OLT_F32] = ISD::SETLT;
364 CmpLibcallCCs[RTLIB::OLT_F64] = ISD::SETLT;
365 CmpLibcallCCs[RTLIB::OLT_F128] = ISD::SETLT;
366 CmpLibcallCCs[RTLIB::OLT_PPCF128] = ISD::SETLT;
367 CmpLibcallCCs[RTLIB::OLE_F32] = ISD::SETLE;
368 CmpLibcallCCs[RTLIB::OLE_F64] = ISD::SETLE;
369 CmpLibcallCCs[RTLIB::OLE_F128] = ISD::SETLE;
370 CmpLibcallCCs[RTLIB::OLE_PPCF128] = ISD::SETLE;
371 CmpLibcallCCs[RTLIB::OGT_F32] = ISD::SETGT;
372 CmpLibcallCCs[RTLIB::OGT_F64] = ISD::SETGT;
373 CmpLibcallCCs[RTLIB::OGT_F128] = ISD::SETGT;
374 CmpLibcallCCs[RTLIB::OGT_PPCF128] = ISD::SETGT;
375 CmpLibcallCCs[RTLIB::UO_F32] = ISD::SETNE;
376 CmpLibcallCCs[RTLIB::UO_F64] = ISD::SETNE;
377 CmpLibcallCCs[RTLIB::UO_F128] = ISD::SETNE;
378 CmpLibcallCCs[RTLIB::UO_PPCF128] = ISD::SETNE;
379}
I
#define I(x, y, z)
Definition: MD5.cpp:58
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
llvm::Triple::aarch64_32
@ aarch64_32
Definition: Triple.h:53
llvm::CallingConv::ARM_AAPCS_VFP
@ ARM_AAPCS_VFP
Same as ARM_AAPCS, but uses hard floating point ABI.
Definition: CallingConv.h:114
llvm::CallingConv::C
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
llvm::RTLIB::Libcall
Libcall
RTLIB::Libcall enum - This enum defines all of the runtime library calls the backend can emit.
Definition: RuntimeLibcalls.h:34
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::RTLIB::RuntimeLibcallsInfo::setLibcallName
void setLibcallName(RTLIB::Libcall Call, const char *Name)
Rename the default libcall routine name for the specified libcall.
Definition: RuntimeLibcalls.h:48
llvm::RTLIB::RuntimeLibcallsInfo::setLibcallCallingConv
void setLibcallCallingConv(RTLIB::Libcall Call, CallingConv::ID CC)
Set the CallingConv that should be used for the specified libcall.
Definition: RuntimeLibcalls.h:75
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