Re-reland: Remove register index/code indirection

src/assembler.cc

 // 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 35 matching lines @@
 #include "src/counters.h"
 #include "src/cpu-profiler.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
+#include "src/register-configuration.h"
 #include "src/runtime/runtime.h"
 #include "src/simulator.h"  // For flushing instruction cache.
 #include "src/snapshot/serialize.h"
 #include "src/token.h"
 
 #if V8_TARGET_ARCH_IA32
 #include "src/ia32/assembler-ia32-inl.h"  // NOLINT
 #elif V8_TARGET_ARCH_X64
 #include "src/x64/assembler-x64-inl.h"  // NOLINT
 #elif V8_TARGET_ARCH_ARM64
@@ skipping 32 matching lines @@
 #include "src/regexp/x87/regexp-macro-assembler-x87.h"  // NOLINT
 #else  // Unknown architecture.
 #error "Unknown architecture."
 #endif  // Target architecture.
 #endif  // V8_INTERPRETED_REGEXP
 
 namespace v8 {
 namespace internal {
 
 // -----------------------------------------------------------------------------
+// Common register code.
+
+const char* Register::ToString() {
+  // This is the mapping of allocation indices to registers.
+  DCHECK(reg_code >= 0 && reg_code < kNumRegisters);
+  return RegisterConfiguration::ArchDefault()->GetGeneralRegisterName(reg_code);
+}
+
+
+bool Register::IsAllocatable() const {
+  return ((1 << reg_code) &
+          RegisterConfiguration::ArchDefault()
+              ->allocatable_general_codes_mask()) != 0;
+}
+
+
+const char* DoubleRegister::ToString() {
+  // This is the mapping of allocation indices to registers.
+  DCHECK(reg_code >= 0 && reg_code < kMaxNumRegisters);
+  return RegisterConfiguration::ArchDefault()->GetDoubleRegisterName(reg_code);
+}
+
+
+bool DoubleRegister::IsAllocatable() const {
+  return ((1 << reg_code) &
+          RegisterConfiguration::ArchDefault()
+              ->allocatable_double_codes_mask()) != 0;
+}
+
+
+// -----------------------------------------------------------------------------
 // Common double constants.
 
 struct DoubleConstant BASE_EMBEDDED {
 double min_int;
 double one_half;
 double minus_one_half;
 double negative_infinity;
 double the_hole_nan;
 double uint32_bias;
 };
@@ skipping 1728 matching lines @@
 
 
 void Assembler::DataAlign(int m) {
   DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
   while ((pc_offset() & (m - 1)) != 0) {
     db(0);
   }
 }
 }  // namespace internal
 }  // namespace v8