Version 3.0.9
Added basic GDB JIT Interface integration.
Make invalid break/continue statements a syntax error instead of a
runtime error.
Review URL: http://codereview.chromium.org/6321012
git-svn-id: http://v8.googlecode.com/svn/trunk@6387 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/ia32/lithium-gap-resolver-ia32.h b/src/ia32/lithium-gap-resolver-ia32.h
new file mode 100644
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+++ b/src/ia32/lithium-gap-resolver-ia32.h
@@ -0,0 +1,110 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_
+#define V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_
+
+#include "v8.h"
+
+#include "lithium-allocator.h"
+
+namespace v8 {
+namespace internal {
+
+class LCodeGen;
+class LGapResolver;
+
+class LGapResolver BASE_EMBEDDED {
+ public:
+ explicit LGapResolver(LCodeGen* owner);
+
+ // Resolve a set of parallel moves, emitting assembler instructions.
+ void Resolve(LParallelMove* parallel_move);
+
+ private:
+ // Build the initial list of moves.
+ void BuildInitialMoveList(LParallelMove* parallel_move);
+
+ // Perform the move at the moves_ index in question (possibly requiring
+ // other moves to satisfy dependencies).
+ void PerformMove(int index);
+
+ // Emit any code necessary at the end of a gap move.
+ void Finish();
+
+ // Add or delete a move from the move graph without emitting any code.
+ // Used to build up the graph and remove trivial moves.
+ void AddMove(LMoveOperands move);
+ void RemoveMove(int index);
+
+ // Report the count of uses of operand as a source in a not-yet-performed
+ // move. Used to rebuild use counts.
+ int CountSourceUses(LOperand* operand);
+
+ // Emit a move and remove it from the move graph.
+ void EmitMove(int index);
+
+ // Execute a move by emitting a swap of two operands. The move from
+ // source to destination is removed from the move graph.
+ void EmitSwap(int index);
+
+ // Ensure that the given operand is not spilled.
+ void EnsureRestored(LOperand* operand);
+
+ // Return a register that can be used as a temp register, spilling
+ // something if necessary.
+ Register EnsureTempRegister();
+
+ // Return a known free register different from the given one (which could
+ // be no_reg---returning any free register), or no_reg if there is no such
+ // register.
+ Register GetFreeRegisterNot(Register reg);
+
+ // Verify that the state is the initial one, ready to resolve a single
+ // parallel move.
+ bool HasBeenReset();
+
+ // Verify the move list before performing moves.
+ void Verify();
+
+ LCodeGen* cgen_;
+
+ // List of moves not yet resolved.
+ ZoneList<LMoveOperands> moves_;
+
+ // Source and destination use counts for the general purpose registers.
+ int source_uses_[Register::kNumAllocatableRegisters];
+ int destination_uses_[Register::kNumAllocatableRegisters];
+
+ // If we had to spill on demand, the currently spilled register's
+ // allocation index.
+ int spilled_register_;
+};
+
+} } // namespace v8::internal
+
+#endif // V8_IA32_LITHIUM_GAP_RESOLVER_IA32_H_