Revert 13105: "Enable stub generation using Hydrogen/Lithium."

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index c915e0556995cecd329e7bae33dfed2b12e73a27..8cccaa5a744ccaaf11dd862ab2d45e55f16d9521 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -55,33 +55,6 @@ uint64_t CpuFeatures::supported_ = 0;
 uint64_t CpuFeatures::found_by_runtime_probing_ = 0;
 
 
-int IntelDoubleRegister::NumAllocatableRegisters() {
-  if (CpuFeatures::IsSupported(SSE2)) {
-    return XMMRegister::kNumAllocatableRegisters;
-  } else {
-    return X87TopOfStackRegister::kNumAllocatableRegisters;
-  }
-}
-
-
-int IntelDoubleRegister::NumRegisters() {
-  if (CpuFeatures::IsSupported(SSE2)) {
-    return XMMRegister::kNumRegisters;
-  } else {
-    return X87TopOfStackRegister::kNumRegisters;
-  }
-}
-
-
-const char* IntelDoubleRegister::AllocationIndexToString(int index) {
-  if (CpuFeatures::IsSupported(SSE2)) {
-    return XMMRegister::AllocationIndexToString(index);
-  } else {
-    return X87TopOfStackRegister::AllocationIndexToString(index);
-  }
-}
-
-
 // The Probe method needs executable memory, so it uses Heap::CreateCode.
 // Allocation failure is silent and leads to safe default.
 void CpuFeatures::Probe() {
@@ -2226,8 +2199,7 @@ void Assembler::prefetch(const Operand& src, int level) {
   EnsureSpace ensure_space(this);
   EMIT(0x0F);
   EMIT(0x18);
-  // Emit hint number in Reg position of RegR/M.
-  XMMRegister code = XMMRegister(level);
+  XMMRegister code = { level };  // Emit hint number in Reg position of RegR/M.
   emit_sse_operand(code, src);
 }