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

Issue 595263002: X87: fixed branch distances. (Closed) Base URL: https://chromium.googlesource.com/external/v8.git@bleeding_edge
Patch Set: Created 6 years, 3 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 // 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"
(...skipping 5284 matching lines...) Expand 10 before | Expand all | Expand 10 after
5295 Register result_reg = ToRegister(result); 5295 Register result_reg = ToRegister(result);
5296 5296
5297 if (instr->truncating()) { 5297 if (instr->truncating()) {
5298 X87Register input_reg = ToX87Register(input); 5298 X87Register input_reg = ToX87Register(input);
5299 X87Fxch(input_reg); 5299 X87Fxch(input_reg);
5300 __ TruncateX87TOSToI(result_reg); 5300 __ TruncateX87TOSToI(result_reg);
5301 } else { 5301 } else {
5302 Label lost_precision, is_nan, minus_zero, done; 5302 Label lost_precision, is_nan, minus_zero, done;
5303 X87Register input_reg = ToX87Register(input); 5303 X87Register input_reg = ToX87Register(input);
5304 X87Fxch(input_reg); 5304 X87Fxch(input_reg);
5305 Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear;
5305 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(), 5306 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(),
5306 &lost_precision, &is_nan, &minus_zero, Label::kNear); 5307 &lost_precision, &is_nan, &minus_zero, dist);
5307 __ jmp(&done, Label::kNear); 5308 __ jmp(&done, dist);
5308 __ bind(&lost_precision); 5309 __ bind(&lost_precision);
5309 DeoptimizeIf(no_condition, instr, "lost precision"); 5310 DeoptimizeIf(no_condition, instr, "lost precision");
5310 __ bind(&is_nan); 5311 __ bind(&is_nan);
5311 DeoptimizeIf(no_condition, instr, "NaN"); 5312 DeoptimizeIf(no_condition, instr, "NaN");
5312 __ bind(&minus_zero); 5313 __ bind(&minus_zero);
5313 DeoptimizeIf(no_condition, instr, "minus zero"); 5314 DeoptimizeIf(no_condition, instr, "minus zero");
5314 __ bind(&done); 5315 __ bind(&done);
5315 } 5316 }
5316 } 5317 }
5317 5318
5318 5319
5319 void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) { 5320 void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) {
5320 LOperand* input = instr->value(); 5321 LOperand* input = instr->value();
5321 DCHECK(input->IsDoubleRegister()); 5322 DCHECK(input->IsDoubleRegister());
5322 LOperand* result = instr->result(); 5323 LOperand* result = instr->result();
5323 DCHECK(result->IsRegister()); 5324 DCHECK(result->IsRegister());
5324 Register result_reg = ToRegister(result); 5325 Register result_reg = ToRegister(result);
5325 5326
5326 Label lost_precision, is_nan, minus_zero, done; 5327 Label lost_precision, is_nan, minus_zero, done;
5327 X87Register input_reg = ToX87Register(input); 5328 X87Register input_reg = ToX87Register(input);
5328 X87Fxch(input_reg); 5329 X87Fxch(input_reg);
5330 Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear;
5329 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(), 5331 __ X87TOSToI(result_reg, instr->hydrogen()->GetMinusZeroMode(),
5330 &lost_precision, &is_nan, &minus_zero, 5332 &lost_precision, &is_nan, &minus_zero, dist);
5331 DeoptEveryNTimes() ? Label::kFar : Label::kNear); 5333 __ jmp(&done, dist);
5332 __ jmp(&done, Label::kNear);
5333 __ bind(&lost_precision); 5334 __ bind(&lost_precision);
5334 DeoptimizeIf(no_condition, instr, "lost precision"); 5335 DeoptimizeIf(no_condition, instr, "lost precision");
5335 __ bind(&is_nan); 5336 __ bind(&is_nan);
5336 DeoptimizeIf(no_condition, instr, "NaN"); 5337 DeoptimizeIf(no_condition, instr, "NaN");
5337 __ bind(&minus_zero); 5338 __ bind(&minus_zero);
5338 DeoptimizeIf(no_condition, instr, "minus zero"); 5339 DeoptimizeIf(no_condition, instr, "minus zero");
5339 __ bind(&done); 5340 __ bind(&done);
5340 __ SmiTag(result_reg); 5341 __ SmiTag(result_reg);
5341 DeoptimizeIf(overflow, instr, "overflow"); 5342 DeoptimizeIf(overflow, instr, "overflow");
5342 } 5343 }
(...skipping 899 matching lines...) Expand 10 before | Expand all | Expand 10 after
6242 CallRuntime(Runtime::kPushBlockContext, 2, instr); 6243 CallRuntime(Runtime::kPushBlockContext, 2, instr);
6243 RecordSafepoint(Safepoint::kNoLazyDeopt); 6244 RecordSafepoint(Safepoint::kNoLazyDeopt);
6244 } 6245 }
6245 6246
6246 6247
6247 #undef __ 6248 #undef __
6248 6249
6249 } } // namespace v8::internal 6250 } } // namespace v8::internal
6250 6251
6251 #endif // V8_TARGET_ARCH_X87 6252 #endif // V8_TARGET_ARCH_X87
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