3.9.16.
Added basic interface inference for modules (behind the --harmony flag).
Added Object.is, Number.isFinite, Number.isNaN.
Updated the Unicode tables to Unicode version 6.1.0.
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@10979 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 5b6f687..54a1a34 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -6155,7 +6155,6 @@
// ebx: instance type
// Calculate length of sub string using the smi values.
- Label result_longer_than_two;
__ mov(ecx, Operand(esp, 1 * kPointerSize)); // To index.
__ JumpIfNotSmi(ecx, &runtime);
__ mov(edx, Operand(esp, 2 * kPointerSize)); // From index.
@@ -6168,43 +6167,7 @@
__ IncrementCounter(counters->sub_string_native(), 1);
__ ret(3 * kPointerSize);
__ bind(¬_original_string);
- // Special handling of sub-strings of length 1 and 2. One character strings
- // are handled in the runtime system (looked up in the single character
- // cache). Two character strings are looked for in the symbol cache.
- __ cmp(ecx, Immediate(Smi::FromInt(2)));
- __ j(greater, &result_longer_than_two);
- __ j(less, &runtime);
- // Sub string of length 2 requested.
- // eax: string
- // ebx: instance type
- // ecx: sub string length (smi, value is 2)
- // edx: from index (smi)
- __ JumpIfInstanceTypeIsNotSequentialAscii(ebx, ebx, &runtime);
-
- // Get the two characters forming the sub string.
- __ SmiUntag(edx); // From index is no longer smi.
- __ movzx_b(ebx, FieldOperand(eax, edx, times_1, SeqAsciiString::kHeaderSize));
- __ movzx_b(ecx,
- FieldOperand(eax, edx, times_1, SeqAsciiString::kHeaderSize + 1));
-
- // Try to lookup two character string in symbol table.
- Label combine_two_char, save_two_char;
- StringHelper::GenerateTwoCharacterSymbolTableProbe(
- masm, ebx, ecx, eax, edx, edi, &combine_two_char, &save_two_char);
- __ IncrementCounter(counters->sub_string_native(), 1);
- __ ret(3 * kPointerSize);
-
- __ bind(&combine_two_char);
- __ shl(ecx, kBitsPerByte);
- __ or_(ebx, ecx);
- __ bind(&save_two_char);
- __ AllocateAsciiString(eax, 2, ecx, edx, &runtime);
- __ mov_w(FieldOperand(eax, SeqAsciiString::kHeaderSize), ebx);
- __ IncrementCounter(counters->sub_string_native(), 1);
- __ ret(3 * kPointerSize);
-
- __ bind(&result_longer_than_two);
// eax: string
// ebx: instance type
// ecx: sub string length (smi)
@@ -6271,11 +6234,11 @@
__ bind(&two_byte_slice);
__ AllocateTwoByteSlicedString(eax, ebx, no_reg, &runtime);
__ bind(&set_slice_header);
- __ mov(FieldOperand(eax, SlicedString::kOffsetOffset), edx);
__ mov(FieldOperand(eax, SlicedString::kLengthOffset), ecx);
- __ mov(FieldOperand(eax, SlicedString::kParentOffset), edi);
__ mov(FieldOperand(eax, SlicedString::kHashFieldOffset),
Immediate(String::kEmptyHashField));
+ __ mov(FieldOperand(eax, SlicedString::kParentOffset), edi);
+ __ mov(FieldOperand(eax, SlicedString::kOffsetOffset), edx);
__ IncrementCounter(counters->sub_string_native(), 1);
__ ret(3 * kPointerSize);