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Issue 6811012: Remove some dead code. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 8 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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23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 27
28 #include "v8.h" 28 #include "v8.h"
29 29
30 #if defined(V8_TARGET_ARCH_ARM) 30 #if defined(V8_TARGET_ARCH_ARM)
31 31
32 #include "code-stubs.h" 32 #include "code-stubs.h"
33 #include "codegen-inl.h" 33 #include "codegen.h"
34 #include "compiler.h" 34 #include "compiler.h"
35 #include "debug.h" 35 #include "debug.h"
36 #include "full-codegen.h" 36 #include "full-codegen.h"
37 #include "parser.h" 37 #include "parser.h"
38 #include "scopes.h" 38 #include "scopes.h"
39 #include "stub-cache.h" 39 #include "stub-cache.h"
40 40
41 #include "arm/code-stubs-arm.h" 41 #include "arm/code-stubs-arm.h"
42 42
43 namespace v8 { 43 namespace v8 {
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817 VisitForStackValue(stmt->tag()); 817 VisitForStackValue(stmt->tag());
818 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); 818 PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS);
819 819
820 ZoneList<CaseClause*>* clauses = stmt->cases(); 820 ZoneList<CaseClause*>* clauses = stmt->cases();
821 CaseClause* default_clause = NULL; // Can occur anywhere in the list. 821 CaseClause* default_clause = NULL; // Can occur anywhere in the list.
822 822
823 Label next_test; // Recycled for each test. 823 Label next_test; // Recycled for each test.
824 // Compile all the tests with branches to their bodies. 824 // Compile all the tests with branches to their bodies.
825 for (int i = 0; i < clauses->length(); i++) { 825 for (int i = 0; i < clauses->length(); i++) {
826 CaseClause* clause = clauses->at(i); 826 CaseClause* clause = clauses->at(i);
827 clause->body_target()->entry_label()->Unuse(); 827 clause->body_target()->Unuse();
828 828
829 // The default is not a test, but remember it as final fall through. 829 // The default is not a test, but remember it as final fall through.
830 if (clause->is_default()) { 830 if (clause->is_default()) {
831 default_clause = clause; 831 default_clause = clause;
832 continue; 832 continue;
833 } 833 }
834 834
835 Comment cmnt(masm_, "[ Case comparison"); 835 Comment cmnt(masm_, "[ Case comparison");
836 __ bind(&next_test); 836 __ bind(&next_test);
837 next_test.Unuse(); 837 next_test.Unuse();
838 838
839 // Compile the label expression. 839 // Compile the label expression.
840 VisitForAccumulatorValue(clause->label()); 840 VisitForAccumulatorValue(clause->label());
841 841
842 // Perform the comparison as if via '==='. 842 // Perform the comparison as if via '==='.
843 __ ldr(r1, MemOperand(sp, 0)); // Switch value. 843 __ ldr(r1, MemOperand(sp, 0)); // Switch value.
844 bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); 844 bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT);
845 JumpPatchSite patch_site(masm_); 845 JumpPatchSite patch_site(masm_);
846 if (inline_smi_code) { 846 if (inline_smi_code) {
847 Label slow_case; 847 Label slow_case;
848 __ orr(r2, r1, r0); 848 __ orr(r2, r1, r0);
849 patch_site.EmitJumpIfNotSmi(r2, &slow_case); 849 patch_site.EmitJumpIfNotSmi(r2, &slow_case);
850 850
851 __ cmp(r1, r0); 851 __ cmp(r1, r0);
852 __ b(ne, &next_test); 852 __ b(ne, &next_test);
853 __ Drop(1); // Switch value is no longer needed. 853 __ Drop(1); // Switch value is no longer needed.
854 __ b(clause->body_target()->entry_label()); 854 __ b(clause->body_target());
855 __ bind(&slow_case); 855 __ bind(&slow_case);
856 } 856 }
857 857
858 // Record position before stub call for type feedback. 858 // Record position before stub call for type feedback.
859 SetSourcePosition(clause->position()); 859 SetSourcePosition(clause->position());
860 Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT); 860 Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT);
861 EmitCallIC(ic, &patch_site); 861 EmitCallIC(ic, &patch_site);
862 __ cmp(r0, Operand(0)); 862 __ cmp(r0, Operand(0));
863 __ b(ne, &next_test); 863 __ b(ne, &next_test);
864 __ Drop(1); // Switch value is no longer needed. 864 __ Drop(1); // Switch value is no longer needed.
865 __ b(clause->body_target()->entry_label()); 865 __ b(clause->body_target());
866 } 866 }
867 867
868 // Discard the test value and jump to the default if present, otherwise to 868 // Discard the test value and jump to the default if present, otherwise to
869 // the end of the statement. 869 // the end of the statement.
870 __ bind(&next_test); 870 __ bind(&next_test);
871 __ Drop(1); // Switch value is no longer needed. 871 __ Drop(1); // Switch value is no longer needed.
872 if (default_clause == NULL) { 872 if (default_clause == NULL) {
873 __ b(nested_statement.break_target()); 873 __ b(nested_statement.break_target());
874 } else { 874 } else {
875 __ b(default_clause->body_target()->entry_label()); 875 __ b(default_clause->body_target());
876 } 876 }
877 877
878 // Compile all the case bodies. 878 // Compile all the case bodies.
879 for (int i = 0; i < clauses->length(); i++) { 879 for (int i = 0; i < clauses->length(); i++) {
880 Comment cmnt(masm_, "[ Case body"); 880 Comment cmnt(masm_, "[ Case body");
881 CaseClause* clause = clauses->at(i); 881 CaseClause* clause = clauses->at(i);
882 __ bind(clause->body_target()->entry_label()); 882 __ bind(clause->body_target());
883 PrepareForBailoutForId(clause->EntryId(), NO_REGISTERS); 883 PrepareForBailoutForId(clause->EntryId(), NO_REGISTERS);
884 VisitStatements(clause->statements()); 884 VisitStatements(clause->statements());
885 } 885 }
886 886
887 __ bind(nested_statement.break_target()); 887 __ bind(nested_statement.break_target());
888 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); 888 PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS);
889 } 889 }
890 890
891 891
892 void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { 892 void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
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4365 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value. 4365 __ mov(r1, Operand(r1, ASR, 1)); // Un-smi-tag value.
4366 __ add(pc, r1, Operand(masm_->CodeObject())); 4366 __ add(pc, r1, Operand(masm_->CodeObject()));
4367 } 4367 }
4368 4368
4369 4369
4370 #undef __ 4370 #undef __
4371 4371
4372 } } // namespace v8::internal 4372 } } // namespace v8::internal
4373 4373
4374 #endif // V8_TARGET_ARCH_ARM 4374 #endif // V8_TARGET_ARCH_ARM
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