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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #if V8_TARGET_ARCH_ARM | 7 #if V8_TARGET_ARCH_ARM |
| 8 | 8 |
| 9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
| 10 #include "src/bootstrapper.h" | 10 #include "src/bootstrapper.h" |
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| 242 Label not_identical; | 242 Label not_identical; |
| 243 Label heap_number, return_equal; | 243 Label heap_number, return_equal; |
| 244 __ cmp(r0, r1); | 244 __ cmp(r0, r1); |
| 245 __ b(ne, ¬_identical); | 245 __ b(ne, ¬_identical); |
| 246 | 246 |
| 247 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), | 247 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), |
| 248 // so we do the second best thing - test it ourselves. | 248 // so we do the second best thing - test it ourselves. |
| 249 // They are both equal and they are not both Smis so both of them are not | 249 // They are both equal and they are not both Smis so both of them are not |
| 250 // Smis. If it's not a heap number, then return equal. | 250 // Smis. If it's not a heap number, then return equal. |
| 251 if (cond == lt || cond == gt) { | 251 if (cond == lt || cond == gt) { |
| 252 Label not_simd; | |
| 253 // Call runtime on identical JSObjects. | 252 // Call runtime on identical JSObjects. |
| 254 __ CompareObjectType(r0, r4, r4, FIRST_SPEC_OBJECT_TYPE); | 253 __ CompareObjectType(r0, r4, r4, FIRST_SPEC_OBJECT_TYPE); |
| 255 __ b(ge, slow); | 254 __ b(ge, slow); |
| 256 // Call runtime on identical symbols since we need to throw a TypeError. | 255 // Call runtime on identical symbols since we need to throw a TypeError. |
| 257 __ cmp(r4, Operand(SYMBOL_TYPE)); | 256 __ cmp(r4, Operand(SYMBOL_TYPE)); |
| 258 __ b(eq, slow); | 257 __ b(eq, slow); |
| 259 // Call runtime on identical SIMD values since we must throw a TypeError. | 258 // Call runtime on identical SIMD values since we must throw a TypeError. |
| 260 __ cmp(r4, Operand(FIRST_SIMD_VALUE_TYPE)); | 259 __ cmp(r4, Operand(SIMD128_VALUE_TYPE)); |
| 261 __ b(lt, ¬_simd); | 260 __ b(eq, slow); |
| 262 __ cmp(r4, Operand(LAST_SIMD_VALUE_TYPE)); | |
| 263 __ b(le, slow); | |
| 264 __ bind(¬_simd); | |
| 265 if (is_strong(strength)) { | 261 if (is_strong(strength)) { |
| 266 // Call the runtime on anything that is converted in the semantics, since | 262 // Call the runtime on anything that is converted in the semantics, since |
| 267 // we need to throw a TypeError. Smis have already been ruled out. | 263 // we need to throw a TypeError. Smis have already been ruled out. |
| 268 __ cmp(r4, Operand(HEAP_NUMBER_TYPE)); | 264 __ cmp(r4, Operand(HEAP_NUMBER_TYPE)); |
| 269 __ b(eq, &return_equal); | 265 __ b(eq, &return_equal); |
| 270 __ tst(r4, Operand(kIsNotStringMask)); | 266 __ tst(r4, Operand(kIsNotStringMask)); |
| 271 __ b(ne, slow); | 267 __ b(ne, slow); |
| 272 } | 268 } |
| 273 } else { | 269 } else { |
| 274 __ CompareObjectType(r0, r4, r4, HEAP_NUMBER_TYPE); | 270 __ CompareObjectType(r0, r4, r4, HEAP_NUMBER_TYPE); |
| 275 __ b(eq, &heap_number); | 271 __ b(eq, &heap_number); |
| 276 // Comparing JS objects with <=, >= is complicated. | 272 // Comparing JS objects with <=, >= is complicated. |
| 277 if (cond != eq) { | 273 if (cond != eq) { |
| 278 Label not_simd; | |
| 279 __ cmp(r4, Operand(FIRST_SPEC_OBJECT_TYPE)); | 274 __ cmp(r4, Operand(FIRST_SPEC_OBJECT_TYPE)); |
| 280 __ b(ge, slow); | 275 __ b(ge, slow); |
| 281 // Call runtime on identical symbols since we need to throw a TypeError. | 276 // Call runtime on identical symbols since we need to throw a TypeError. |
| 282 __ cmp(r4, Operand(SYMBOL_TYPE)); | 277 __ cmp(r4, Operand(SYMBOL_TYPE)); |
| 283 __ b(eq, slow); | 278 __ b(eq, slow); |
| 284 // Call runtime on identical SIMD values since we must throw a TypeError. | 279 // Call runtime on identical SIMD values since we must throw a TypeError. |
| 285 __ cmp(r4, Operand(FIRST_SIMD_VALUE_TYPE)); | 280 __ cmp(r4, Operand(SIMD128_VALUE_TYPE)); |
| 286 __ b(lt, ¬_simd); | 281 __ b(eq, slow); |
| 287 __ cmp(r4, Operand(LAST_SIMD_VALUE_TYPE)); | |
| 288 __ b(le, slow); | |
| 289 __ bind(¬_simd); | |
| 290 if (is_strong(strength)) { | 282 if (is_strong(strength)) { |
| 291 // Call the runtime on anything that is converted in the semantics, | 283 // Call the runtime on anything that is converted in the semantics, |
| 292 // since we need to throw a TypeError. Smis and heap numbers have | 284 // since we need to throw a TypeError. Smis and heap numbers have |
| 293 // already been ruled out. | 285 // already been ruled out. |
| 294 __ tst(r4, Operand(kIsNotStringMask)); | 286 __ tst(r4, Operand(kIsNotStringMask)); |
| 295 __ b(ne, slow); | 287 __ b(ne, slow); |
| 296 } | 288 } |
| 297 // Normally here we fall through to return_equal, but undefined is | 289 // Normally here we fall through to return_equal, but undefined is |
| 298 // special: (undefined == undefined) == true, but | 290 // special: (undefined == undefined) == true, but |
| 299 // (undefined <= undefined) == false! See ECMAScript 11.8.5. | 291 // (undefined <= undefined) == false! See ECMAScript 11.8.5. |
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| 5534 MemOperand(fp, 6 * kPointerSize), NULL); | 5526 MemOperand(fp, 6 * kPointerSize), NULL); |
| 5535 } | 5527 } |
| 5536 | 5528 |
| 5537 | 5529 |
| 5538 #undef __ | 5530 #undef __ |
| 5539 | 5531 |
| 5540 } // namespace internal | 5532 } // namespace internal |
| 5541 } // namespace v8 | 5533 } // namespace v8 |
| 5542 | 5534 |
| 5543 #endif // V8_TARGET_ARCH_ARM | 5535 #endif // V8_TARGET_ARCH_ARM |
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