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Side by Side Diff: src/arm/lithium-gap-resolver-arm.cc

Issue 13560007: Remove ARM support for soft float (pre-VFP2) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Review feedback Created 7 years, 8 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
(...skipping 153 matching lines...) Expand 10 before | Expand all | Expand 10 after
164 ASSERT(moves_[index].destination()->Equals(moves_[root_index_].source())); 164 ASSERT(moves_[index].destination()->Equals(moves_[root_index_].source()));
165 ASSERT(!in_cycle_); 165 ASSERT(!in_cycle_);
166 in_cycle_ = true; 166 in_cycle_ = true;
167 LOperand* source = moves_[index].source(); 167 LOperand* source = moves_[index].source();
168 saved_destination_ = moves_[index].destination(); 168 saved_destination_ = moves_[index].destination();
169 if (source->IsRegister()) { 169 if (source->IsRegister()) {
170 __ mov(kSavedValueRegister, cgen_->ToRegister(source)); 170 __ mov(kSavedValueRegister, cgen_->ToRegister(source));
171 } else if (source->IsStackSlot()) { 171 } else if (source->IsStackSlot()) {
172 __ ldr(kSavedValueRegister, cgen_->ToMemOperand(source)); 172 __ ldr(kSavedValueRegister, cgen_->ToMemOperand(source));
173 } else if (source->IsDoubleRegister()) { 173 } else if (source->IsDoubleRegister()) {
174 CpuFeatureScope scope(cgen_->masm(), VFP2);
175 __ vmov(kScratchDoubleReg, cgen_->ToDoubleRegister(source)); 174 __ vmov(kScratchDoubleReg, cgen_->ToDoubleRegister(source));
176 } else if (source->IsDoubleStackSlot()) { 175 } else if (source->IsDoubleStackSlot()) {
177 CpuFeatureScope scope(cgen_->masm(), VFP2);
178 __ vldr(kScratchDoubleReg, cgen_->ToMemOperand(source)); 176 __ vldr(kScratchDoubleReg, cgen_->ToMemOperand(source));
179 } else { 177 } else {
180 UNREACHABLE(); 178 UNREACHABLE();
181 } 179 }
182 // This move will be done by restoring the saved value to the destination. 180 // This move will be done by restoring the saved value to the destination.
183 moves_[index].Eliminate(); 181 moves_[index].Eliminate();
184 } 182 }
185 183
186 184
187 void LGapResolver::RestoreValue() { 185 void LGapResolver::RestoreValue() {
188 ASSERT(in_cycle_); 186 ASSERT(in_cycle_);
189 ASSERT(saved_destination_ != NULL); 187 ASSERT(saved_destination_ != NULL);
190 188
191 // Spilled value is in kSavedValueRegister or kSavedDoubleValueRegister. 189 // Spilled value is in kSavedValueRegister or kSavedDoubleValueRegister.
192 if (saved_destination_->IsRegister()) { 190 if (saved_destination_->IsRegister()) {
193 __ mov(cgen_->ToRegister(saved_destination_), kSavedValueRegister); 191 __ mov(cgen_->ToRegister(saved_destination_), kSavedValueRegister);
194 } else if (saved_destination_->IsStackSlot()) { 192 } else if (saved_destination_->IsStackSlot()) {
195 __ str(kSavedValueRegister, cgen_->ToMemOperand(saved_destination_)); 193 __ str(kSavedValueRegister, cgen_->ToMemOperand(saved_destination_));
196 } else if (saved_destination_->IsDoubleRegister()) { 194 } else if (saved_destination_->IsDoubleRegister()) {
197 CpuFeatureScope scope(cgen_->masm(), VFP2);
198 __ vmov(cgen_->ToDoubleRegister(saved_destination_), kScratchDoubleReg); 195 __ vmov(cgen_->ToDoubleRegister(saved_destination_), kScratchDoubleReg);
199 } else if (saved_destination_->IsDoubleStackSlot()) { 196 } else if (saved_destination_->IsDoubleStackSlot()) {
200 CpuFeatureScope scope(cgen_->masm(), VFP2);
201 __ vstr(kScratchDoubleReg, cgen_->ToMemOperand(saved_destination_)); 197 __ vstr(kScratchDoubleReg, cgen_->ToMemOperand(saved_destination_));
202 } else { 198 } else {
203 UNREACHABLE(); 199 UNREACHABLE();
204 } 200 }
205 201
206 in_cycle_ = false; 202 in_cycle_ = false;
207 saved_destination_ = NULL; 203 saved_destination_ = NULL;
208 } 204 }
209 205
210 206
(...skipping 15 matching lines...) Expand all
226 222
227 } else if (source->IsStackSlot()) { 223 } else if (source->IsStackSlot()) {
228 MemOperand source_operand = cgen_->ToMemOperand(source); 224 MemOperand source_operand = cgen_->ToMemOperand(source);
229 if (destination->IsRegister()) { 225 if (destination->IsRegister()) {
230 __ ldr(cgen_->ToRegister(destination), source_operand); 226 __ ldr(cgen_->ToRegister(destination), source_operand);
231 } else { 227 } else {
232 ASSERT(destination->IsStackSlot()); 228 ASSERT(destination->IsStackSlot());
233 MemOperand destination_operand = cgen_->ToMemOperand(destination); 229 MemOperand destination_operand = cgen_->ToMemOperand(destination);
234 if (in_cycle_) { 230 if (in_cycle_) {
235 if (!destination_operand.OffsetIsUint12Encodable()) { 231 if (!destination_operand.OffsetIsUint12Encodable()) {
236 CpuFeatureScope scope(cgen_->masm(), VFP2); 232 // ip is overwritten while saving the value to the destination.
237 // ip is overwritten while saving the value to the destination.
238 // Therefore we can't use ip. It is OK if the read from the source 233 // Therefore we can't use ip. It is OK if the read from the source
239 // destroys ip, since that happens before the value is read. 234 // destroys ip, since that happens before the value is read.
240 __ vldr(kScratchDoubleReg.low(), source_operand); 235 __ vldr(kScratchDoubleReg.low(), source_operand);
241 __ vstr(kScratchDoubleReg.low(), destination_operand); 236 __ vstr(kScratchDoubleReg.low(), destination_operand);
242 } else { 237 } else {
243 __ ldr(ip, source_operand); 238 __ ldr(ip, source_operand);
244 __ str(ip, destination_operand); 239 __ str(ip, destination_operand);
245 } 240 }
246 } else { 241 } else {
247 __ ldr(kSavedValueRegister, source_operand); 242 __ ldr(kSavedValueRegister, source_operand);
(...skipping 17 matching lines...) Expand all
265 __ mov(kSavedValueRegister, 260 __ mov(kSavedValueRegister,
266 Operand(cgen_->ToInteger32(constant_source))); 261 Operand(cgen_->ToInteger32(constant_source)));
267 } else { 262 } else {
268 __ LoadObject(kSavedValueRegister, 263 __ LoadObject(kSavedValueRegister,
269 cgen_->ToHandle(constant_source)); 264 cgen_->ToHandle(constant_source));
270 } 265 }
271 __ str(kSavedValueRegister, cgen_->ToMemOperand(destination)); 266 __ str(kSavedValueRegister, cgen_->ToMemOperand(destination));
272 } 267 }
273 268
274 } else if (source->IsDoubleRegister()) { 269 } else if (source->IsDoubleRegister()) {
275 CpuFeatureScope scope(cgen_->masm(), VFP2);
276 DwVfpRegister source_register = cgen_->ToDoubleRegister(source); 270 DwVfpRegister source_register = cgen_->ToDoubleRegister(source);
277 if (destination->IsDoubleRegister()) { 271 if (destination->IsDoubleRegister()) {
278 __ vmov(cgen_->ToDoubleRegister(destination), source_register); 272 __ vmov(cgen_->ToDoubleRegister(destination), source_register);
279 } else { 273 } else {
280 ASSERT(destination->IsDoubleStackSlot()); 274 ASSERT(destination->IsDoubleStackSlot());
281 __ vstr(source_register, cgen_->ToMemOperand(destination)); 275 __ vstr(source_register, cgen_->ToMemOperand(destination));
282 } 276 }
283 277
284 } else if (source->IsDoubleStackSlot()) { 278 } else if (source->IsDoubleStackSlot()) {
285 CpuFeatureScope scope(cgen_->masm(), VFP2); 279 MemOperand source_operand = cgen_->ToMemOperand(source);
286 MemOperand source_operand = cgen_->ToMemOperand(source);
287 if (destination->IsDoubleRegister()) { 280 if (destination->IsDoubleRegister()) {
288 __ vldr(cgen_->ToDoubleRegister(destination), source_operand); 281 __ vldr(cgen_->ToDoubleRegister(destination), source_operand);
289 } else { 282 } else {
290 ASSERT(destination->IsDoubleStackSlot()); 283 ASSERT(destination->IsDoubleStackSlot());
291 MemOperand destination_operand = cgen_->ToMemOperand(destination); 284 MemOperand destination_operand = cgen_->ToMemOperand(destination);
292 if (in_cycle_) { 285 if (in_cycle_) {
293 // kSavedDoubleValueRegister was used to break the cycle, 286 // kSavedDoubleValueRegister was used to break the cycle,
294 // but kSavedValueRegister is free. 287 // but kSavedValueRegister is free.
295 MemOperand source_high_operand = 288 MemOperand source_high_operand =
296 cgen_->ToHighMemOperand(source); 289 cgen_->ToHighMemOperand(source);
(...skipping 12 matching lines...) Expand all
309 UNREACHABLE(); 302 UNREACHABLE();
310 } 303 }
311 304
312 moves_[index].Eliminate(); 305 moves_[index].Eliminate();
313 } 306 }
314 307
315 308
316 #undef __ 309 #undef __
317 310
318 } } // namespace v8::internal 311 } } // namespace v8::internal
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