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Issue 6995048: Kill some dead code. (Closed)
Patch Set: Created 9 years, 7 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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1891 1891
1892 push(eax); 1892 push(eax);
1893 push(Immediate(p0)); 1893 push(Immediate(p0));
1894 push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(p1 - p0)))); 1894 push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(p1 - p0))));
1895 CallRuntime(Runtime::kAbort, 2); 1895 CallRuntime(Runtime::kAbort, 2);
1896 // will not return here 1896 // will not return here
1897 int3(); 1897 int3();
1898 } 1898 }
1899 1899
1900 1900
1901 void MacroAssembler::JumpIfNotNumber(Register reg,
1902 TypeInfo info,
1903 Label* on_not_number) {
1904 if (emit_debug_code()) AbortIfSmi(reg);
1905 if (!info.IsNumber()) {
1906 cmp(FieldOperand(reg, HeapObject::kMapOffset),
1907 isolate()->factory()->heap_number_map());
1908 j(not_equal, on_not_number);
1909 }
1910 }
1911
1912
1913 void MacroAssembler::ConvertToInt32(Register dst,
1914 Register source,
1915 Register scratch,
1916 TypeInfo info,
1917 Label* on_not_int32) {
1918 if (emit_debug_code()) {
1919 AbortIfSmi(source);
1920 AbortIfNotNumber(source);
1921 }
1922 if (info.IsInteger32()) {
1923 cvttsd2si(dst, FieldOperand(source, HeapNumber::kValueOffset));
1924 } else {
1925 Label done;
1926 bool push_pop = (scratch.is(no_reg) && dst.is(source));
1927 ASSERT(!scratch.is(source));
1928 if (push_pop) {
1929 push(dst);
1930 scratch = dst;
1931 }
1932 if (scratch.is(no_reg)) scratch = dst;
1933 cvttsd2si(scratch, FieldOperand(source, HeapNumber::kValueOffset));
1934 cmp(scratch, 0x80000000u);
1935 if (push_pop) {
1936 j(not_equal, &done);
1937 pop(dst);
1938 jmp(on_not_int32);
1939 } else {
1940 j(equal, on_not_int32);
1941 }
1942
1943 bind(&done);
1944 if (push_pop) {
1945 add(Operand(esp), Immediate(kPointerSize)); // Pop.
1946 }
1947 if (!scratch.is(dst)) {
1948 mov(dst, scratch);
1949 }
1950 }
1951 }
1952
1953
1954 void MacroAssembler::LoadPowerOf2(XMMRegister dst, 1901 void MacroAssembler::LoadPowerOf2(XMMRegister dst,
1955 Register scratch, 1902 Register scratch,
1956 int power) { 1903 int power) {
1957 ASSERT(is_uintn(power + HeapNumber::kExponentBias, 1904 ASSERT(is_uintn(power + HeapNumber::kExponentBias,
1958 HeapNumber::kExponentBits)); 1905 HeapNumber::kExponentBits));
1959 mov(scratch, Immediate(power + HeapNumber::kExponentBias)); 1906 mov(scratch, Immediate(power + HeapNumber::kExponentBias));
1960 movd(dst, Operand(scratch)); 1907 movd(dst, Operand(scratch));
1961 psllq(dst, HeapNumber::kMantissaBits); 1908 psllq(dst, HeapNumber::kMantissaBits);
1962 } 1909 }
1963 1910
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2065 2012
2066 // Check that the code was patched as expected. 2013 // Check that the code was patched as expected.
2067 ASSERT(masm_.pc_ == address_ + size_); 2014 ASSERT(masm_.pc_ == address_ + size_);
2068 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 2015 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
2069 } 2016 }
2070 2017
2071 2018
2072 } } // namespace v8::internal 2019 } } // namespace v8::internal
2073 2020
2074 #endif // V8_TARGET_ARCH_IA32 2021 #endif // V8_TARGET_ARCH_IA32
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