MIPS: Fix for an ARM register allocation bug.

src/mips/assembler-mips-inl.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 12 matching lines @@
 // 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.
 
 // The original source code covered by the above license above has been
 // modified significantly by Google Inc.
-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 
 
 #ifndef V8_MIPS_ASSEMBLER_MIPS_INL_H_
 #define V8_MIPS_ASSEMBLER_MIPS_INL_H_
 
 #include "mips/assembler-mips.h"
 #include "cpu.h"
 #include "debug.h"
 
 
@@ skipping 27 matching lines @@
 Operand::Operand(Register rm) {
   rm_ = rm;
 }
 
 
 bool Operand::is_reg() const {
   return rm_.is_valid();
 }
 
 
+int FPURegister::ToAllocationIndex(FPURegister reg) {
+  ASSERT(reg.code() % 2 == 0);
+  ASSERT(reg.code() / 2 < kNumAllocatableRegisters);
+  ASSERT(reg.is_valid());
+  ASSERT(!reg.is(kDoubleRegZero));
+  ASSERT(!reg.is(kLithiumScratchDouble));
+  return (reg.code() / 2);
+}
+
+
 // -----------------------------------------------------------------------------
 // RelocInfo.
 
 void RelocInfo::apply(intptr_t delta) {
   if (IsCodeTarget(rmode_)) {
     uint32_t scope1 = (uint32_t) target_address() & ~kImm28Mask;
     uint32_t scope2 = reinterpret_cast<uint32_t>(pc_) & ~kImm28Mask;
 
     if (scope1 != scope2) {
       Assembler::JumpLabelToJumpRegister(pc_);
@@ skipping 244 matching lines @@
   }
   *reinterpret_cast<Instr*>(pc_) = x;
   pc_ += kInstrSize;
   CheckTrampolinePoolQuick();
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_MIPS_ASSEMBLER_MIPS_INL_H_