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Issue 6004005: Implement inlining of instanceof tests on ARM. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 10 years ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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171 } 171 }
172 172
173 173
174 void MacroAssembler::Drop(int count, Condition cond) { 174 void MacroAssembler::Drop(int count, Condition cond) {
175 if (count > 0) { 175 if (count > 0) {
176 add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond); 176 add(sp, sp, Operand(count * kPointerSize), LeaveCC, cond);
177 } 177 }
178 } 178 }
179 179
180 180
181 void MacroAssembler::Ret(int drop, Condition cond) {
182 Drop(drop, cond);
183 Ret(cond);
184 }
185
186
181 void MacroAssembler::Swap(Register reg1, 187 void MacroAssembler::Swap(Register reg1,
182 Register reg2, 188 Register reg2,
183 Register scratch, 189 Register scratch,
184 Condition cond) { 190 Condition cond) {
185 if (scratch.is(no_reg)) { 191 if (scratch.is(no_reg)) {
186 eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 192 eor(reg1, reg1, Operand(reg2), LeaveCC, cond);
187 eor(reg2, reg2, Operand(reg1), LeaveCC, cond); 193 eor(reg2, reg2, Operand(reg1), LeaveCC, cond);
188 eor(reg1, reg1, Operand(reg2), LeaveCC, cond); 194 eor(reg1, reg1, Operand(reg2), LeaveCC, cond);
189 } else { 195 } else {
190 mov(scratch, reg1, LeaveCC, cond); 196 mov(scratch, reg1, LeaveCC, cond);
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814 // code field in the function to allow recompilation to take effect 820 // code field in the function to allow recompilation to take effect
815 // without changing any of the call sites. 821 // without changing any of the call sites.
816 ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset)); 822 ldr(r3, FieldMemOperand(r1, JSFunction::kCodeEntryOffset));
817 InvokeCode(r3, expected, actual, flag); 823 InvokeCode(r3, expected, actual, flag);
818 } else { 824 } else {
819 InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag); 825 InvokeCode(code, expected, actual, RelocInfo::CODE_TARGET, flag);
820 } 826 }
821 } 827 }
822 828
823 829
830 void MacroAssembler::IsObjectJSObjectType(Register heap_object,
831 Register map,
832 Register scratch,
833 Label* fail) {
834 ldr(map, FieldMemOperand(heap_object, HeapObject::kMapOffset));
835 IsInstanceJSObjectType(map, scratch, fail);
836 }
837
838
839 void MacroAssembler::IsInstanceJSObjectType(Register map,
840 Register scratch,
841 Label* fail) {
842 ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
843 cmp(scratch, Operand(FIRST_JS_OBJECT_TYPE));
844 b(lt, fail);
845 cmp(scratch, Operand(LAST_JS_OBJECT_TYPE));
846 b(gt, fail);
847 }
848
849
850 void MacroAssembler::IsObjectJSStringType(Register object,
851 Register scratch,
852 Label* fail) {
853 ASSERT(kNotStringTag != 0);
854
855 ldr(scratch, FieldMemOperand(object, HeapObject::kMapOffset));
856 ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
857 tst(scratch, Operand(kIsNotStringMask));
858 b(nz, fail);
859 }
860
861
824 #ifdef ENABLE_DEBUGGER_SUPPORT 862 #ifdef ENABLE_DEBUGGER_SUPPORT
825 void MacroAssembler::DebugBreak() { 863 void MacroAssembler::DebugBreak() {
826 ASSERT(allow_stub_calls()); 864 ASSERT(allow_stub_calls());
827 mov(r0, Operand(0, RelocInfo::NONE)); 865 mov(r0, Operand(0, RelocInfo::NONE));
828 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak))); 866 mov(r1, Operand(ExternalReference(Runtime::kDebugBreak)));
829 CEntryStub ces(1); 867 CEntryStub ces(1);
830 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK); 868 Call(ces.GetCode(), RelocInfo::DEBUG_BREAK);
831 } 869 }
832 #endif 870 #endif
833 871
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2107 2145
2108 void CodePatcher::Emit(Address addr) { 2146 void CodePatcher::Emit(Address addr) {
2109 masm()->emit(reinterpret_cast<Instr>(addr)); 2147 masm()->emit(reinterpret_cast<Instr>(addr));
2110 } 2148 }
2111 #endif // ENABLE_DEBUGGER_SUPPORT 2149 #endif // ENABLE_DEBUGGER_SUPPORT
2112 2150
2113 2151
2114 } } // namespace v8::internal 2152 } } // namespace v8::internal
2115 2153
2116 #endif // V8_TARGET_ARCH_ARM 2154 #endif // V8_TARGET_ARCH_ARM
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