MIPS: Remove soft-float support.

src/mips/assembler-mips.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 56 matching lines @@
 
 
 // -----------------------------------------------------------------------------
 // Implementation of Register and FPURegister.
 
 // Core register.
 struct Register {
   static const int kNumRegisters = v8::internal::kNumRegisters;
   static const int kMaxNumAllocatableRegisters = 14;  // v0 through t7.
   static const int kSizeInBytes = 4;
-  static const int kGPRsPerNonFPUDouble = 2;
 
   inline static int NumAllocatableRegisters();
 
   static int ToAllocationIndex(Register reg) {
     return reg.code() - 2;  // zero_reg and 'at' are skipped.
   }
 
   static Register FromAllocationIndex(int index) {
     ASSERT(index >= 0 && index < kMaxNumAllocatableRegisters);
     return from_code(index + 2);  // zero_reg and 'at' are skipped.
@@ skipping 205 matching lines @@
 const FPURegister f23 = { 23 };
 const FPURegister f24 = { 24 };
 const FPURegister f25 = { 25 };
 const FPURegister f26 = { 26 };
 const FPURegister f27 = { 27 };
 const FPURegister f28 = { 28 };
 const FPURegister f29 = { 29 };
 const FPURegister f30 = { 30 };
 const FPURegister f31 = { 31 };
 
-const Register sfpd_lo  = { kRegister_t6_Code };
-const Register sfpd_hi  = { kRegister_t7_Code };
-
 // Register aliases.
 // cp is assumed to be a callee saved register.
 // Defined using #define instead of "static const Register&" because Clang
 // complains otherwise when a compilation unit that includes this header
 // doesn't use the variables.
 #define kRootRegister s6
 #define cp s7
 #define kLithiumScratchReg s3
 #define kLithiumScratchReg2 s4
 #define kLithiumScratchDouble f30
@@ skipping 80 matching lines @@
 // Supported features must be enabled by a CpuFeatureScope before use.
 class CpuFeatures : public AllStatic {
  public:
   // Detect features of the target CPU. Set safe defaults if the serializer
   // is enabled (snapshots must be portable).
   static void Probe();
 
   // Check whether a feature is supported by the target CPU.
   static bool IsSupported(CpuFeature f) {
     ASSERT(initialized_);
-    if (f == FPU && !FLAG_enable_fpu) return false;
     return (supported_ & (1u << f)) != 0;
   }
 
   static bool IsFoundByRuntimeProbingOnly(CpuFeature f) {
     ASSERT(initialized_);
     return (found_by_runtime_probing_only_ &
             (static_cast<uint64_t>(1) << f)) != 0;
   }
 
   static bool IsSafeForSnapshot(CpuFeature f) {
@@ skipping 792 matching lines @@
 class EnsureSpace BASE_EMBEDDED {
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_