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Issue 813813003: Revert of Remove obsolete V8_INFINITY macro. (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 <limits>
6
7 #include "src/v8.h" 5 #include "src/v8.h"
8 6
9 #if V8_TARGET_ARCH_MIPS64 7 #if V8_TARGET_ARCH_MIPS64
10 8
11 #include "src/bootstrapper.h" 9 #include "src/bootstrapper.h"
12 #include "src/code-stubs.h" 10 #include "src/code-stubs.h"
13 #include "src/codegen.h" 11 #include "src/codegen.h"
14 #include "src/ic/handler-compiler.h" 12 #include "src/ic/handler-compiler.h"
15 #include "src/ic/ic.h" 13 #include "src/ic/ic.h"
16 #include "src/isolate.h" 14 #include "src/isolate.h"
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846 __ Move(double_scratch, 0.5); 844 __ Move(double_scratch, 0.5);
847 __ BranchF(USE_DELAY_SLOT, 845 __ BranchF(USE_DELAY_SLOT,
848 &not_plus_half, 846 &not_plus_half,
849 NULL, 847 NULL,
850 ne, 848 ne,
851 double_exponent, 849 double_exponent,
852 double_scratch); 850 double_scratch);
853 // double_scratch can be overwritten in the delay slot. 851 // double_scratch can be overwritten in the delay slot.
854 // Calculates square root of base. Check for the special case of 852 // Calculates square root of base. Check for the special case of
855 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). 853 // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13).
856 __ Move(double_scratch, std::numeric_limits<double>::infinity()); 854 __ Move(double_scratch, static_cast<double>(-V8_INFINITY));
857 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); 855 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch);
858 __ neg_d(double_result, double_scratch); 856 __ neg_d(double_result, double_scratch);
859 857
860 // Add +0 to convert -0 to +0. 858 // Add +0 to convert -0 to +0.
861 __ add_d(double_scratch, double_base, kDoubleRegZero); 859 __ add_d(double_scratch, double_base, kDoubleRegZero);
862 __ sqrt_d(double_result, double_scratch); 860 __ sqrt_d(double_result, double_scratch);
863 __ jmp(&done); 861 __ jmp(&done);
864 862
865 __ bind(&not_plus_half); 863 __ bind(&not_plus_half);
866 __ Move(double_scratch, -0.5); 864 __ Move(double_scratch, -0.5);
867 __ BranchF(USE_DELAY_SLOT, 865 __ BranchF(USE_DELAY_SLOT,
868 &call_runtime, 866 &call_runtime,
869 NULL, 867 NULL,
870 ne, 868 ne,
871 double_exponent, 869 double_exponent,
872 double_scratch); 870 double_scratch);
873 // double_scratch can be overwritten in the delay slot. 871 // double_scratch can be overwritten in the delay slot.
874 // Calculates square root of base. Check for the special case of 872 // Calculates square root of base. Check for the special case of
875 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). 873 // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13).
876 __ Move(double_scratch, std::numeric_limits<double>::infinity()); 874 __ Move(double_scratch, static_cast<double>(-V8_INFINITY));
877 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch); 875 __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch);
878 __ Move(double_result, kDoubleRegZero); 876 __ Move(double_result, kDoubleRegZero);
879 877
880 // Add +0 to convert -0 to +0. 878 // Add +0 to convert -0 to +0.
881 __ add_d(double_scratch, double_base, kDoubleRegZero); 879 __ add_d(double_scratch, double_base, kDoubleRegZero);
882 __ Move(double_result, 1.); 880 __ Move(double_result, 1.);
883 __ sqrt_d(double_scratch, double_scratch); 881 __ sqrt_d(double_scratch, double_scratch);
884 __ div_d(double_result, double_result, double_scratch); 882 __ div_d(double_result, double_result, double_scratch);
885 __ jmp(&done); 883 __ jmp(&done);
886 } 884 }
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5008 MemOperand(fp, 6 * kPointerSize), 5006 MemOperand(fp, 6 * kPointerSize),
5009 NULL); 5007 NULL);
5010 } 5008 }
5011 5009
5012 5010
5013 #undef __ 5011 #undef __
5014 5012
5015 } } // namespace v8::internal 5013 } } // namespace v8::internal
5016 5014
5017 #endif // V8_TARGET_ARCH_MIPS64 5015 #endif // V8_TARGET_ARCH_MIPS64
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