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Issue 798413003: Remove obsolete V8_INFINITY macro. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Address Svens smiley. 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 <limits>
6
5 #include "src/v8.h" 7 #include "src/v8.h"
6 8
7 #if V8_TARGET_ARCH_ARM 9 #if V8_TARGET_ARCH_ARM
8 10
9 #include "src/base/bits.h" 11 #include "src/base/bits.h"
10 #include "src/bootstrapper.h" 12 #include "src/bootstrapper.h"
11 #include "src/code-stubs.h" 13 #include "src/code-stubs.h"
12 #include "src/codegen.h" 14 #include "src/codegen.h"
13 #include "src/ic/handler-compiler.h" 15 #include "src/ic/handler-compiler.h"
14 #include "src/ic/ic.h" 16 #include "src/ic/ic.h"
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775 // for non-constant cases of +/-0.5 as these hardly occur. 777 // for non-constant cases of +/-0.5 as these hardly occur.
776 Label not_plus_half; 778 Label not_plus_half;
777 779
778 // Test for 0.5. 780 // Test for 0.5.
779 __ vmov(double_scratch, 0.5, scratch); 781 __ vmov(double_scratch, 0.5, scratch);
780 __ VFPCompareAndSetFlags(double_exponent, double_scratch); 782 __ VFPCompareAndSetFlags(double_exponent, double_scratch);
781 __ b(ne, &not_plus_half); 783 __ b(ne, &not_plus_half);
782 784
783 // Calculates square root of base. Check for the special case of 785 // Calculates square root of base. Check for the special case of
784 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). 786 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13).
785 __ vmov(double_scratch, -V8_INFINITY, scratch); 787 __ vmov(double_scratch, -std::numeric_limits<double>::infinity(),
788 scratch);
786 __ VFPCompareAndSetFlags(double_base, double_scratch); 789 __ VFPCompareAndSetFlags(double_base, double_scratch);
787 __ vneg(double_result, double_scratch, eq); 790 __ vneg(double_result, double_scratch, eq);
788 __ b(eq, &done); 791 __ b(eq, &done);
789 792
790 // Add +0 to convert -0 to +0. 793 // Add +0 to convert -0 to +0.
791 __ vadd(double_scratch, double_base, kDoubleRegZero); 794 __ vadd(double_scratch, double_base, kDoubleRegZero);
792 __ vsqrt(double_result, double_scratch); 795 __ vsqrt(double_result, double_scratch);
793 __ jmp(&done); 796 __ jmp(&done);
794 797
795 __ bind(&not_plus_half); 798 __ bind(&not_plus_half);
796 __ vmov(double_scratch, -0.5, scratch); 799 __ vmov(double_scratch, -0.5, scratch);
797 __ VFPCompareAndSetFlags(double_exponent, double_scratch); 800 __ VFPCompareAndSetFlags(double_exponent, double_scratch);
798 __ b(ne, &call_runtime); 801 __ b(ne, &call_runtime);
799 802
800 // Calculates square root of base. Check for the special case of 803 // Calculates square root of base. Check for the special case of
801 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). 804 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13).
802 __ vmov(double_scratch, -V8_INFINITY, scratch); 805 __ vmov(double_scratch, -std::numeric_limits<double>::infinity(),
806 scratch);
803 __ VFPCompareAndSetFlags(double_base, double_scratch); 807 __ VFPCompareAndSetFlags(double_base, double_scratch);
804 __ vmov(double_result, kDoubleRegZero, eq); 808 __ vmov(double_result, kDoubleRegZero, eq);
805 __ b(eq, &done); 809 __ b(eq, &done);
806 810
807 // Add +0 to convert -0 to +0. 811 // Add +0 to convert -0 to +0.
808 __ vadd(double_scratch, double_base, kDoubleRegZero); 812 __ vadd(double_scratch, double_base, kDoubleRegZero);
809 __ vmov(double_result, 1.0, scratch); 813 __ vmov(double_result, 1.0, scratch);
810 __ vsqrt(double_scratch, double_scratch); 814 __ vsqrt(double_scratch, double_scratch);
811 __ vdiv(double_result, double_result, double_scratch); 815 __ vdiv(double_result, double_result, double_scratch);
812 __ jmp(&done); 816 __ jmp(&done);
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4754 MemOperand(fp, 6 * kPointerSize), 4758 MemOperand(fp, 6 * kPointerSize),
4755 NULL); 4759 NULL);
4756 } 4760 }
4757 4761
4758 4762
4759 #undef __ 4763 #undef __
4760 4764
4761 } } // namespace v8::internal 4765 } } // namespace v8::internal
4762 4766
4763 #endif // V8_TARGET_ARCH_ARM 4767 #endif // V8_TARGET_ARCH_ARM
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