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Side by Side Diff: src/x87/lithium-codegen-x87.cc

Issue 820963002: X87: fix one test case failure under debug mode. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 6 years 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 // 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_X87 7 #if V8_TARGET_ARCH_X87
8 8
9 #include "src/base/bits.h" 9 #include "src/base/bits.h"
10 #include "src/code-factory.h" 10 #include "src/code-factory.h"
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5390 Register result_reg = ToRegister(result); 5390 Register result_reg = ToRegister(result);
5391 5391
5392 if (instr->truncating()) { 5392 if (instr->truncating()) {
5393 X87Register input_reg = ToX87Register(input); 5393 X87Register input_reg = ToX87Register(input);
5394 X87Fxch(input_reg); 5394 X87Fxch(input_reg);
5395 __ TruncateX87TOSToI(result_reg); 5395 __ TruncateX87TOSToI(result_reg);
5396 } else { 5396 } else {
5397 Label lost_precision, is_nan, minus_zero, done; 5397 Label lost_precision, is_nan, minus_zero, done;
5398 X87Register input_reg = ToX87Register(input); 5398 X87Register input_reg = ToX87Register(input);
5399 X87Fxch(input_reg); 5399 X87Fxch(input_reg);
5400 Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear;
5401 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(), 5400 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(),
5402 &lost_precision, &is_nan, &minus_zero, dist); 5401 &lost_precision, &is_nan, &minus_zero);
5403 __ jmp(&done); 5402 __ jmp(&done);
5404 __ bind(&lost_precision); 5403 __ bind(&lost_precision);
5405 DeoptimizeIf(no_condition, instr, "lost precision"); 5404 DeoptimizeIf(no_condition, instr, "lost precision");
5406 __ bind(&is_nan); 5405 __ bind(&is_nan);
5407 DeoptimizeIf(no_condition, instr, "NaN"); 5406 DeoptimizeIf(no_condition, instr, "NaN");
5408 __ bind(&minus_zero); 5407 __ bind(&minus_zero);
5409 DeoptimizeIf(no_condition, instr, "minus zero"); 5408 DeoptimizeIf(no_condition, instr, "minus zero");
5410 __ bind(&done); 5409 __ bind(&done);
5411 } 5410 }
5412 } 5411 }
5413 5412
5414 5413
5415 void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) { 5414 void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) {
5416 LOperand* input = instr->value(); 5415 LOperand* input = instr->value();
5417 DCHECK(input->IsDoubleRegister()); 5416 DCHECK(input->IsDoubleRegister());
5418 LOperand* result = instr->result(); 5417 LOperand* result = instr->result();
5419 DCHECK(result->IsRegister()); 5418 DCHECK(result->IsRegister());
5420 Register result_reg = ToRegister(result); 5419 Register result_reg = ToRegister(result);
5421 5420
5422 Label lost_precision, is_nan, minus_zero, done; 5421 Label lost_precision, is_nan, minus_zero, done;
5423 X87Register input_reg = ToX87Register(input); 5422 X87Register input_reg = ToX87Register(input);
5424 X87Fxch(input_reg); 5423 X87Fxch(input_reg);
5425 Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear;
5426 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(), 5424 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(),
5427 &lost_precision, &is_nan, &minus_zero, dist); 5425 &lost_precision, &is_nan, &minus_zero);
5428 __ jmp(&done); 5426 __ jmp(&done);
5429 __ bind(&lost_precision); 5427 __ bind(&lost_precision);
5430 DeoptimizeIf(no_condition, instr, "lost precision"); 5428 DeoptimizeIf(no_condition, instr, "lost precision");
5431 __ bind(&is_nan); 5429 __ bind(&is_nan);
5432 DeoptimizeIf(no_condition, instr, "NaN"); 5430 DeoptimizeIf(no_condition, instr, "NaN");
5433 __ bind(&minus_zero); 5431 __ bind(&minus_zero);
5434 DeoptimizeIf(no_condition, instr, "minus zero"); 5432 DeoptimizeIf(no_condition, instr, "minus zero");
5435 __ bind(&done); 5433 __ bind(&done);
5436 __ SmiTag(result_reg); 5434 __ SmiTag(result_reg);
5437 DeoptimizeIf(overflow, instr, "overflow"); 5435 DeoptimizeIf(overflow, instr, "overflow");
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6338 CallRuntime(Runtime::kPushBlockContext, 2, instr); 6336 CallRuntime(Runtime::kPushBlockContext, 2, instr);
6339 RecordSafepoint(Safepoint::kNoLazyDeopt); 6337 RecordSafepoint(Safepoint::kNoLazyDeopt);
6340 } 6338 }
6341 6339
6342 6340
6343 #undef __ 6341 #undef __
6344 6342
6345 } } // namespace v8::internal 6343 } } // namespace v8::internal
6346 6344
6347 #endif // V8_TARGET_ARCH_X87 6345 #endif // V8_TARGET_ARCH_X87
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